Testing and Numerical Simulation of Temperature Field and Oxygen Field for CFB Boilers

doi:10.11930/j.issn.1004-9649.2013.9.6.0

Abstract

Abstract: The test on furnace temperature field and oxygen field of one CFB boiler is conducted and the combustion process of the boiler is simulated by numerical simulation software. The results demonstrate that the temperature distribution along the furnace height is relatively uniform, therefore, the temperature in the dilute region can be represented with a fixed value during boiler design. In addition, the temperature 1 meter away from the furnace wall varies slightly and tends to be constant, so that, the temperature in the furnace center can be used as the reference temperature during boiler design. The oxygen concentration is lower in the center and at the wall surface and shows a M-shape distribution approximately along the furnace width. The numerical simulation results are consistent with the test data. The study is helpful to understand the CFB boiler temperature field and oxygen field distributionand improve the combustion efficiency. The research results can provide a reference for large CFB boiler design and theoretical studies.

Key words: circulating fluidized bed boiler, temperature field, oxygen field, testing, numerical simulation

CLC Number:

TK223

HUANG Zhong, SUN Xian-bin, JIANG Jian-zhong, SHI Zheng-hai, XIAO Ping. Testing and Numerical Simulation of Temperature Field and Oxygen Field for CFB Boilers[J]. Electric Power, 2013, 46(9): 6-6.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.9.6.0

https://www.electricpower.com.cn/EN/Y2013/V46/I9/6

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