Structure of a superheater

Details Structure of a superheater Structure of a superheater

F - Mech Eng,Light,Heat,Weapons

22

B

F22B 31/00 (2006.01) F22B 37/10 (2006.01) F22G 3/00 (2006.01)

Patent

CA 2592615

A method for reducing corrosion of a superheater (6) of a steam boiler, which superheater (6) comprises a superheater piping (7), which comprises a steam pipe (9), where the steam (S) to be superheated is directed to. The steam pipe (9) is separated by a protective shell (8), whose surface settling in the flue gas space (G) has a temperature that rises above an upper critical temperature (Tk2), above which temperature in the flue gas space the compounds from the fuel are substantially in a gaseous form. In addition, the invention relates to a superheater of a steam boiler and a circulating fluidized bed boiler.

L'invention porte sur un procédé visant à réduire la corrosion d'un surchauffeur (6) d'une chaudière à vapeur, ce surchauffeur (6) comprenant une tuyauterie (7) constituée d'un tuyau de vapeur (9) dans lequel est dirigée la vapeur (S) à surchauffer. Le tuyau de vapeur (9) est séparé par une enveloppe de protection (8) dont le dépôt de combustion en surface dans l'espace (G) du gaz d'effluent a une température supérieure à une température critique (Tk2), et supérieure à la température de l'espace du gaz d'effluent. Les composés provenant du combustible se présentent sensiblement sous une forme gazeuse. L'invention porte également sur un surchauffeur d'une chaudière à vapeur et sur une chaudière à lit fluidisé circulant.

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