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136 lines
67 KiB
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136 lines
67 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
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<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="F23J" definition-exists="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES</text></title-part><title-part><text>FLUES  </text><reference><text>combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, <class-ref scheme="cpc">F23G7/06</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This subclass <u>covers</u> the cleaning of external surfaces of water tubes of boilers</note-paragraph></note><note type="warning"><note-paragraph><CPC-specific-note>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</CPC-specific-note></note-paragraph></note></notes-and-warnings>
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<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="F23J1/00" date-revised="2013-01-01" status="published"><classification-symbol>F23J1/00</classification-symbol>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J1/00" definition-exists="true" ipc-concordant="F23J1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J1/00</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Removing ash, clinker, or slag from combustion chambers </text><reference><CPC-specific-text><text>removing flyash from flue gas <class-ref scheme="cpc">F23J15/022</class-ref>;</text></CPC-specific-text><text> devices for removal of material from the bed of fluidised bed combustion apparatus <class-ref scheme="cpc">F23C10/24</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J1/02" definition-exists="false" ipc-concordant="F23J1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-05-01" status="published"><classification-symbol>F23J1/02</classification-symbol><class-title date-revised="2016-05-01"><title-part><text>Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J1/04" definition-exists="false" ipc-concordant="F23J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Hand tools, e.g. rakes, prickers, tongs</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J1/06" definition-exists="false" ipc-concordant="F23J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mechanically-operated devices, e.g. clinker pushers </text><reference><text>forming part of the grate <class-ref scheme="cpc">F23H</class-ref></text></reference></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J1/08" definition-exists="false" ipc-concordant="F23J1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Liquid slag removal</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J3/00" definition-exists="true" ipc-concordant="F23J3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J3/00</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J3/02" definition-exists="true" ipc-concordant="F23J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J3/02</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Cleaning furnace tubes</text></title-part><title-part><text>Cleaning flues or chimneys</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23J3/023" definition-exists="false" ipc-concordant="F23J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J3/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>cleaning the fireside of watertubes in boilers</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23J3/026" definition-exists="false" ipc-concordant="F23J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J3/026</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>cleaning the chimneys</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J3/04" definition-exists="false" ipc-concordant="F23J3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Traps</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J3/06" definition-exists="false" ipc-concordant="F23J3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Systems for accumulating residues from different parts of furnace plant</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J7/00" definition-exists="true" ipc-concordant="F23J7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J7/00</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Arrangement of devices for supplying chemicals to fire</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J9/00" definition-exists="false" ipc-concordant="F23J9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing premature solidification of molten combustion residues</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J11/00" definition-exists="true" ipc-concordant="F23J11/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J11/00</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Devices for conducting smoke or fumes, e.g. flues  </text><reference><text>chimney stacks <class-ref scheme="cpc">E04H12/28</class-ref>; removing cooking fumes from domestic stoves or ranges <class-ref scheme="cpc">F24C15/20</class-ref> </text><CPC-specific-text><text>; fume conduits of furnaces, kilns, ovens, or retorts <class-ref scheme="cpc">F27D17/002</class-ref></text></CPC-specific-text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J11/02" definition-exists="false" ipc-concordant="F23J11/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J11/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for conducting smoke or fumes originating from various locations to the outside, e.g. in locomotive sheds, in garages</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J11/04" definition-exists="false" ipc-concordant="F23J11/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J11/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>in locomotives</text></title-part><title-part><text>in road vehicles</text></title-part><title-part><text>in ships</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23J11/06" definition-exists="false" ipc-concordant="F23J11/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J11/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for conducting smoke horizontally</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J11/08" definition-exists="false" ipc-concordant="F23J11/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J11/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for portable apparatus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J11/10" definition-exists="false" ipc-concordant="F23J11/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J11/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for tents</text></title-part><title-part><text>for log huts</text></title-part><title-part><text>for other inflammable structures</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J11/12" definition-exists="false" ipc-concordant="F23J11/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J11/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Smoke conduit systems for factories or large buildings</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J13/00" definition-exists="true" ipc-concordant="F23J13/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J13/00</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Fittings for chimneys or flues  </text><reference><text>side-supporting means for chimney stacks <class-ref scheme="cpc">E04H12/20</class-ref>; ladders permanently attached to chimneys <class-ref scheme="cpc">E06C9/00</class-ref>; draught-inducing apparatus associated with chimneys or flues <class-ref scheme="cpc">F23L17/00</class-ref>; tops for chimneys, terminals for flues <class-ref scheme="cpc">F23L17/02</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J13/02" definition-exists="false" ipc-concordant="F23J13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J13/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Linings</text></title-part><title-part><text>Jackets</text></title-part><title-part><text>Casings</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23J13/025" definition-exists="true" ipc-concordant="F23J13/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J13/025</classification-symbol><class-title date-revised="2020-01-01"><title-part><CPC-specific-text><text>composed of concentric elements, e.g. double walled </text><reference><text>terminals for balanced flue arrangements <class-ref scheme="cpc">F23L17/04</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J13/04" definition-exists="true" ipc-concordant="F23J13/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J13/04</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Joints</text></title-part><title-part><text>Connections</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J13/06" definition-exists="false" ipc-concordant="F23J13/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J13/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mouths</text></title-part><title-part><text>Inlet holes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J13/08" definition-exists="true" ipc-concordant="F23J13/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J13/08</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Doors or covers specially adapted for smoke-boxes, flues, or chimneys</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J15/00" definition-exists="true" ipc-concordant="F23J15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J15/00</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>Arrangements of devices for treating smoke or fumes</text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J15/003" definition-exists="true" ipc-concordant="F23J15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J15/003</classification-symbol><class-title date-revised="2020-01-01"><title-part><CPC-specific-text><text>for supplying chemicals to fumes, e.g. using injection devices</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J15/006" definition-exists="false" ipc-concordant="F23J15/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J15/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Layout of treatment plant</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J15/02" definition-exists="false" ipc-concordant="F23J15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2020-01-01" status="published"><classification-symbol>F23J15/02</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>of purifiers, e.g. for removing noxious material </text><reference><text>traps for solid residues <class-ref scheme="cpc">F23J3/04</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23J15/022" definition-exists="false" ipc-concordant="F23J15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J15/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for removing solid particulate material from the gasflow</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F23J15/025" definition-exists="false" ipc-concordant="F23J15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J15/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using filters</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="F23J15/027" definition-exists="false" ipc-concordant="F23J15/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J15/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using cyclone separators</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="F23J15/04" definition-exists="true" ipc-concordant="F23J15/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J15/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using washing fluids </text><CPC-specific-text><reference><text>scrubbers for removing solids only <class-ref scheme="cpc">F23J15/022</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J15/06" definition-exists="false" ipc-concordant="F23J15/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J15/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of coolers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="F23J15/08" definition-exists="false" ipc-concordant="F23J15/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J15/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>of heaters</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="F23J99/00" definition-exists="false" ipc-concordant="F23J99/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J99/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Subject matter not provided for in other groups of this subclass</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="true" level="6" additional-only="true" sort-key="F23J211/00" date-revised="2013-01-01" status="published"><classification-symbol>F23J2211/00</classification-symbol>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23J211/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2211/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Flue gas duct systems</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J211/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2211/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Balanced flues (combining air supply and flue gas exhaust)</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J211/101" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2211/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with coaxial duct arrangement</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J211/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2211/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Common flues for several combustion devices</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J211/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2211/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chimney or flue associated with building ventilation system</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J211/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2211/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chimney with internal flue pipe system</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23J213/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Chimneys or flues</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J213/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Linings</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/101" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Fastening means therefor</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J213/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Joints</text></title-part><title-part><text>Connections</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/201" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/201</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>between stack and branch pipes</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/202" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/202</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>between duct or stack sections</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/203" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/203</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>between stack/duct and combustion apparatus</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/204" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/204</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sealing arrangements</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J213/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Specific materials</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/301" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/301</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>flexible</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/302" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/302</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>plastic</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/303" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/303</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>metallic</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/304" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/304</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ceramic</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J213/305" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/305</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>glass</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J213/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heat insulation fittings</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J213/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Top cover</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J213/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Service arrangements</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J213/70" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2213/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Safety arrangements</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23J215/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing emissions </text><reference><text>solids only <class-ref scheme="cpc">F23J2217/00</class-ref></text></reference></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J215/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrogen</text></title-part><title-part><text>Compounds thereof</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J215/101" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Nitrous oxide (N<sub>2</sub>O)</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J215/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sulfur</text></title-part><title-part><text>Compounds thereof</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J215/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Halogen</text></title-part><title-part><text>Compounds thereof</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J215/301" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/301</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dioxins</text></title-part><title-part><text>Furans</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J215/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon monoxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J215/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Carbon dioxide</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J215/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2215/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Heavy metals</text></title-part><title-part><text>Compounds thereof</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23J217/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Intercepting solids</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J217/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by filters</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J217/101" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/101</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Baghouse type</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J217/102" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/102</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>electrostatic</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J217/103" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>ultrafine [HEPA]</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J217/104" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/104</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>High temperature resistant (ceramic) type</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J217/105" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/105</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Granular bed</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J217/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by baffles</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J217/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by screens</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J217/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by cyclones</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J217/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by cleaning fluids (washers or scrubbers)</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J217/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2217/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using settling/precipitation chambers</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23J219/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Treatment devices</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/10" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Catalytic reduction devices</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/20" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Non-catalytic reduction devices</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="F23J219/201" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/201</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Reducing species generators, e.g. plasma, corona</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/30" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-01-01" status="published"><classification-symbol>F23J2219/30</classification-symbol><class-title date-revised="2017-01-01"><title-part><text>Sorption devices using carbon, e.g. coke</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/40" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sorption with wet devices, e.g. scrubbers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/50" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sorption with semi-dry devices, e.g. with slurries</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/60" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sorption with dry devices, e.g. beds</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/70" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Condensing contaminants with coolers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J219/80" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2219/80</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Quenching</text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23J700/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2700/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ash removal, handling and treatment means</text></title-part><title-part><text>Ash and slag handling in pulverulent fuel furnaces</text></title-part><title-part><text>Ash removal means for incinerators</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="7" additional-only="true" sort-key="F23J900/00" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Special arrangements for conducting or purifying combustion fumes</text></title-part><title-part><text>Treatment of fumes or ashes</text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Sorting and classifying ashes or fly-ashes from the combustion chamber before further treatment</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ash crushing means associated with ash removal means</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01004" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Separating water from ash</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Mixing water to ash</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01006" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01006</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Airlock sealing associated with ash removal means</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01007" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01007</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Thermal treatments of ash, e.g. temper or shock-cooling for granulation</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01009" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01009</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Controls related to ash or slag extraction</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/01021" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/01021</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Removing ashes from the ash pit using reciprocating means, e.g. pushers</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/11001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/11001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Conducting systems with a gas flow bypass from main flue to an auxiliary flue</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/11002" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/11002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Modelling systems adapted for designing arrangements for conducting or purifying combustion fumes, e.g. flues</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing or reducing corrosion in chimneys</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13002" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Initial heating of the flue before starting combustion</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for reducing the noise in smoke conducing ducts or systems</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13004" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Water draining devices associated with flues</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13005" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13005</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Protections for chimneys or flue tops against external factors, e.g. birds</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13021" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13021</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for supporting the lining of conducting means, e.g. ducts or chimneys</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13022" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13022</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Manufacturing processes for the lining of conducting means, e.g. by extrusion</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/13023" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/13023</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Ducts with non-circular cross-section</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15001" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15001</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Irradiating fumes with electron or light beams, e.g. UV, for oxidizing or dissociating SOx and NOx</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15002" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15002</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cleaning fumes by letting them to pass a molten metal bath</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15003" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15003</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Supplying fumes with ozone</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15004" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15004</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing plume emission at chimney outlet</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15021" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15021</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Preventing emission of hexavalent chromium at the chimney outlet</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15022" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15022</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electrochemical cell filters</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15026" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15026</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Cyclone separators with horizontal axis</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15041" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15041</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Means for absorbing SOx using seawater</text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="F23J900/15061" definition-exists="false" ipc-concordant="CPCONLY" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>F23J2900/15061</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Deep cooling or freezing of flue gas rich of CO<sub>2</sub> to deliver CO<sub>2</sub>-free emissions, or to deliver liquid CO<sub>2</sub></text></title-part></class-title></classification-item>
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