Numerical Simulation of the Effects of Refractory Belt Retrofit on the Combustion in the 300-MW Boilers

doi:10.11930/j.issn.1004-9649.2017.02.082.06

Abstract

Abstract: Regarding the problems of low reheat steam temperature, unstable combustion and low burnout degree due to the coal quality deterioration in the two 300-MW boilers of a power plant phase I project, the retrofit plan of laying some refractory belt on the water wall located at the lower part of the main combustion zone is proposed. The combustion conditions before and after the retrofit are simulated with the aid of the Fluent 6.3 software. In this way the effects of refractory belt arrangement on furnace temperature distribution, charcoal burnout degree and slagging performance are analyzed. Based on the analysis, a more desirable arrangement is designed. The study concludes that reasonable refractory belt arrangement is helpful to solve the current problems existing in the boilers.

Key words: boiler, refractory belt, numerical simulation, water wall, furnace

CLC Number:

TK11⁺5

YAN Shunlin, SUN Zhiqiang, ZHU Guangming, DUAN Xuenong. Numerical Simulation of the Effects of Refractory Belt Retrofit on the Combustion in the 300-MW Boilers[J]. Electric Power, 2017, 50(2): 82-87.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2017.02.082.06

https://www.electricpower.com.cn/EN/Y2017/V50/I2/82

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