| F | SK | MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
| F22 | KL | STEAM GENERATION (chemical or physical apparatus for generating gases B01J; chemical generation of gas, e.g. under pressure, Section C; removal of combustion products or residues, e.g. cleaning of the combustion contaminated surfaces of tubes of boilers, F23J; generating combustion products of high pressure or high velocity F23R; water heaters not for steam generation F24H , F28; cleaning of internal or external surfaces of heat-transfer conduits, e.g. water tubes of boilers, F28G) |
| F22G | UKL | SUPERHEATING OF STEAM (steam-separating arrangements in boilers F22B 37/26) |
| F22G 1/00 | HGR | Steam superheating characterised by heating method (exothermal chemical reactions not involving a supply of free oxygen gas, apparatus or devices for using the heat therefrom F24J) |
| F22G 1/02 | UGR1 | | . | with heat supply by hot flue gases from the furnace of the steam boiler |
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| F22G 1/04 | UGR2 | | . . | by diverting flow or hot flue gases to separate superheaters operating in reheating cycle, e.g. for reheating steam between a high-pressure turbine stage and an intermediate turbine stage |
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| F22G 1/06 | UGR1 | | . | with heat supply predominantly by radiation |
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| F22G 1/08 | UGR2 | | . . | from heated brickwork or the like |
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| F22G 1/10 | UGR1 | | . | with provision for superheating by throttling |
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| F22G 1/12 | UGR1 | | . | by mixing steam with furnace gases or other combustion products |
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| F22G 1/14 | UGR1 | | . | using heat generated by chemical reactions |
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| F22G 1/16 | UGR1 | | . | by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil |
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| F22G 3/00 | HGR | Steam superheaters characterised by constructional features; Details or component parts thereof (general aspects of enclosed heat-exchangers F28D) |
| F22G 5/00 | HGR | Controlling superheat temperature (control systems for steam boilers F22B; regulating or controlling in general G05) |
| F22G 5/02 | UGR1 | | . | Applications of combustion-control devices, e.g. tangential-firing burners, tilting burners |
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| F22G 5/04 | UGR1 | | . | by regulating flue gas flow, e.g. by proportioning or diverting |
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| F22G 5/06 | UGR1 | | . | by recirculating flue gases |
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| F22G 5/08 | UGR2 | | . . | preventing furnace gas backflow through recirculating fan |
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| F22G 5/10 | UGR1 | | . | by displacing superheater sections |
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| F22G 5/12 | UGR1 | | . | by attemperating the superheated steam, e.g. by injected water sprays (spray-mixers B01F 5/18) |
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| F22G 5/14 | UGR2 | |
| F22G 5/16 | UGR1 | | . | by indirectly cooling or heating the superheated steam in auxiliary enclosed heat-exchanger |
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| F22G 5/18 | UGR1 | | . | by by-passing steam around superheater sections |
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| F22G 5/20 | UGR1 | | . | by combined controlling procedures |
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| F22G 7/00 | HGR | Steam superheaters characterised by location, arrangement, or disposition |
| F22G 7/02 | UGR1 | |
| F22G 7/04 | UGR1 | | . | in jackets around fire tubes |
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| F22G 7/06 | UGR1 | |
| F22G 7/08 | UGR1 | |
| F22G 7/10 | UGR1 | |
| F22G 7/12 | UGR1 | |
| F22G 7/14 | UGR1 | | . | in water-tube boilers, e.g. between banks of water tubes |
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