Reason analysis of high exhausted gas temperature of a boiler and its countermeasures

Abstract

Abstract:

The change of exhausted gas temperature has a great influence on boiler efficiency. After the 600MW direct aircooled lignitefired subcritical unit of Baiyinhua Jinshan Power Generation Company Limited put into operation, there exist a problem of high exhausted gas temperature. This paper deeply analyzed the main reason of high exhausted gas temperature, and adopted some measures, such as adjusting oxygen volume, optimizing coal pulverizing system and adjusting combustion, etc. Then it conducted a technical transformation of economizer. After the transformation, the exhausted gas temperature reached the design value basically.

Key words:

boiler, exhausted gas temperature, boiler efficiency, operation optimization；technical transformation

WANG Donghui.

Reason analysis of high exhausted gas temperature of a boiler and its countermeasures

[J]. Huadian Technology, 2017, 39(4): 50-55.

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Reason analysis of high exhausted gas temperature of a boiler and its countermeasures

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