F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
LIGHTING AND HEATING
 F22
STEAM GENERATION (chemical or physical apparatus for generating gases B01J; chemical generation of gas, e.g. under pressure, Section C; generating combustion products of high pressure or high velocity F23R)
 F22

Note(s)

In this class, the term "steam" also covers other condensable vapours, e.g. mercury, diphenyl, diphenyl oxide.

 F22G
SUPERHEATING OF STEAM (steam-separating arrangements in boilers F22B 37/26)
 F22G 1/00
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
·  with heat supply by hot flue gases from the furnace of the steam boiler
 F22G 1/04
·  ·  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
 F22G 1/06
·  with heat supply predominantly by radiation
 F22G 1/08
·  ·  from heated brickwork or the like
 F22G 1/10
·  with provision for superheating by throttling
 F22G 1/12
·  by mixing steam with furnace gases or other combustion products
 F22G 1/14
·  using heat generated by chemical reactions
 F22G 1/16
·  by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil
 F22G 3/00
Steam superheaters characterised by constructional features; Details of component parts thereof (general aspects of enclosed heat-exchangers F28D)
 F22G 5/00
Controlling superheat temperature (control systems for steam boilers F22B; regulating or controlling in general G05)
 F22G 5/02
·  Applications of combustion-control devices, e.g. tangential-firing burners, tilting burners
 F22G 5/04
·  by regulating flue gas flow, e.g. by proportioning or diverting
 F22G 5/06
·  by recirculating flue gases
 F22G 5/08
·  ·  preventing furnace gas backflow through recirculating fan
 F22G 5/10
·  by displacing superheater sections
 F22G 5/12
·  by attemperating the superheated steam, e.g. by injected water sprays (spray mixers B01F 5/18)
 F22G 5/14
·  ·  by live steam
 F22G 5/16
·  by indirectly cooling or heating the superheated steam in auxiliary enclosed heat-exchanger
 F22G 5/18
·  by by-passing steam around superheater sections
 F22G 5/20
·  by combined controlling procedures
 F22G 7/00
Steam superheaters characterised by location, arrangement, or disposition
 F22G 7/02
·  in fire tubes
 F22G 7/04
·  in jackets around fire tubes
 F22G 7/06
·  in furnace tubes
 F22G 7/08
·  in fire-boxes
 F22G 7/10
·  in smoke-boxes
 F22G 7/12
·  in flues
 F22G 7/14
·  in water-tube boilers, e.g. between banks of water tubes