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Thesis Advisor李佑楚
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Discipline化学工艺
Other AbstractBased on the available understanding of hydrodynamics, gas-solid mixing, heat and mass transfer between the solids and the gas surrounding them and the kinetics of coal combustion reactions in the fast fluidized bed combustor, a two-phase model with axial gas-solid profile has been developed. This model involves various gas-solid reactions and main gas phase reactions associated with axial voidage profile, solid mixing as well as axial gas dispersion. Comprehensive characteristics such as combustion efficiency, axial voidage profile, axial gas concentration profile, bed pressure drop and pollutant emissions for the pilot plant combustor has been simulated through this mathematical modeling. As a result, the calculated results are in good agreement with experimental data. In addition, the effects of combustion temperature, excess air, coal particle size, secondary air ratio and coal loading on the combustion features has been estimated in order to select properly the operating parameters for the CFB combustor. Also, the proposed method of design for CFB combustor is expected to promote the development of the CFB technology in industrial scale.
Document Type学位论文
Recommended Citation
GB/T 7714
凌学军. 快速流化床燃烧器数学模型[D]. 北京. 中国科学院研究生院,1991.
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快速流化床燃烧器数学模型.pdf(2687KB) 限制开放CC BY-NC-SAApplication Full Text
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