600MW sub critical unit boiler SCR improvement test research

Abstract

Abstract:

Abstract:Based on the condition of a subcritical 600MW selective catalytic reduction (SCR) abnormal large ammonia consumption, denitration system operation difficult, NOx large fluctuation and air preheater blockage and other problems, the author analyzed the outlet NOxdensity and flow field. By adjusting ammonia injection grid, the unit operation was optimized, density field was almost equally distributed. Testing point deviation was lowered to under 15%. Decreasing of air preheater resistance pressure difference reach to 26.13%.

Key words:

Keywords:600MW unit, subcritical unit, boiler, denitration, SCR improvement, NOx density;flow field;air preheater

YANG Yanxin,ZHONG Jianhui.

600MW sub critical unit boiler SCR improvement test research

[J]. Huadian Technology, 2016, 38(6): 63-70.

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600MW sub critical unit boiler SCR improvement test research

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