| IPC 7 English version |
| F23K-F23K00522 |
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| SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 23 | COMBUSTION APPARATUS; COMBUSTION PROCESSES |
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| F 23 K | FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised bed combustion apparatus F23C 10/22; regulating or controlling combustion F23N) |
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1/ | 00 | Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus (filtration B01D; mixing B01F; pulverising B02C; drying F26B) |
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1/ | 02 | . | Mixing solid fuel with a liquid, e.g. preparing slurries |
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1/ | 04 | . | Heating fuel prior to delivery to combustion apparatus |
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3/ | 00 | Feeding or distributing of lump or pulverulent fuel to combustion apparatus (conveying in general B65G) |
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3/ | 02 | . | Pneumatic feeding arrangements, i.e. by air blast |
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3/ | 04 | . | for locomotive boiler furnaces |
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3/ | 06 | . | for shaft-type furnaces |
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3/ | 08 | . | for furnaces having movable grate bars |
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3/ | 10 | . | Under-feed arrangements |
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3/ | 12 | . | . | feeding by piston |
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3/ | 14 | . | . | feeding by screw |
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3/ | 16 | . | Over-feed arrangements |
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3/ | 18 | . | . | Spreader stokers |
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3/ | 20 | . | . | . | with moving hoppers |
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3/ | 22 | . | Controlling thickness of fuel bed |
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5/ | 00 | Feeding or distributing other fuel to combustion apparatus |
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5/ | 02 | . | Liquid fuel [5] |
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5/ | 04 | . | . | Feeding or distributing systems using pumps (F23K 5/06 takes precedence) [5] |
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5/ | 06 | . | . | from a central source to a plurality of burners [5] |
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5/ | 08 | . | . | Preparation of fuel [5] |
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5/ | 10 | . | . | . | Mixing with other fluids [5] |
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5/ | 12 | . | . | . | . | Preparing emulsions (spraying an emulsion of water and fuel into the combustion space of burners F23D 11/16) [5] |
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5/ | 14 | . | . | Details thereof [5] |
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5/ | 16 | . | . | . | Safety devices (F23K 5/18 takes precedence; safety arrangements for combustion chambers F23M 11/00) [5] |
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5/ | 18 | . | . | . | Cleaning or purging devices, e.g. filters [5] |
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5/ | 20 | . | . | . | Preheating devices (in burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space F23D 11/44) [5] |
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5/ | 22 | . | . | . | Vaporising devices (in burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space F23D 11/44) [5] |
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