(0)F22G:0/0:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
SUPERHEATING OF STEAM
F22G
1/1

F 22 G

 SUPERHEATING OF STEAM (steam-separating arrangements in boilers F 22 B 37/26)

 

 

 
 

 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 F 24 J)

1
/ 02 • with heat supply by hot flue gases from the furnace of the steam boiler  

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  

1
/ 06 • with heat supply predominantly by radiation  

1
/ 08 • • from heated brickwork or the like  

1
/ 10 • with provision for superheating by throttling  

1
/ 12 • by mixing steam with furnace gases or other combustion products  

1
/ 14 • using heat generated by chemical reactions  

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  
 

 3
/ 00 Steam superheaters characterised by constructional features; Details or component parts thereof (general aspects of enclosed heat-exchangers F 28 D)
 

 5
/ 00 Controlling superheat temperature (control systems for steam boilers F 22 B; regulating or controlling in general G 05)

5
/ 02 • Applications of combustion-control devices, e.g. tangential-firing burners, tilting burners  

5
/ 04 • by regulating flue gas flow, e.g. by proportioning or diverting  

5
/ 06 • by recirculating flue gases  

5
/ 08 • • preventing furnace gas backflow through recirculating fan  

5
/ 10 • by displacing superheater sections  

5
/ 12 • by attemperating the superheated steam, e.g. by injected water sprays (spray-mixers B 01 F 5/18)  

5
/ 14 • • by live steam  

5
/ 16 • by indirectly cooling or heating the superheated steam in auxiliary enclosed heat-exchanger  

5
/ 18 • by by-passing steam around superheater sections  

5
/ 20 • by combined controlling procedures  
 

 7
/ 00 Steam superheaters characterised by location, arrangement, or disposition

7
/ 02 • in fire tubes  

7
/ 04 • in jackets around fire tubes  

7
/ 06 • in furnace tubes  

7
/ 08 • in fire-boxes  

7
/ 10 • in smoke-boxes  

7
/ 12 • in flues  

7
/ 14 • in water-tube boilers, e.g. between banks of water tubes