Application research of air staging technology based on CFD

Abstract

Abstract:

Based on Fluent software, the numerical simulation of the combustion process of 450t/h pulverized coalfired boiler is carried out. The simulation results show that the different air ratios of main combustion zones have a great influence on the oxygen content at furnace exit, smoke temperature and NOx concentration. Properly reducing the air volume in the main combustion zone can effectively reduce the NOx emission concentration at the furnace exit.The CO concentration and exhaust gas temperature at furnace exit rises slightly at the same time.

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Key words:

boiler, denitration, air staging, separated overfire air(SOFA), numerical simulation;computational fluid dynamics(CFD)

LIU Peiqi，LIU Xiaomeng，ZHU Yue.

Application research of air staging technology based on CFD

[J]. Huadian Technology, 2019, 41(1): 32-35.

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Application research of air staging technology based on CFD

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