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本文所述的增压流化床燃烧及脱硫数学模型以两相理论为基础,综合考虑了床内气固流动、颗粒扬析和磨损、颗粒在床内停留时间的随机分布、挥发份和炭的燃烧、二氧化硫的脱除及床内主要气体组分的浓度沿床高的变化等因素,实现了增压流化床燃烧和脱硫的系统模化,模型的计算结果与东南大学增压流化床燃烧装置(SEU-PFBC)的试验值相比,两者吻合良好,有一定的参考价值。
Based on the two-phase theory, the mathematic model of combusting and desulphurization for supercharged fluidized bed (CFB) described in this paper takes into account the random distribution of gas-solid flow in the bed, particle analysis and wear, particle residence time in the bed, Combustion, the removal of sulfur dioxide and the concentration of the main gas components in the bed along the bed height and other factors, the system modeling of the pressurized fluidized bed combustion and desulfurization was realized. The results of the model were compared with those of pressurized fluidization Bed combustion unit (SEU-PFBC) compared to the test value, the two agree well with a certain reference value.