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从颗粒速度分布函数出发 ,推导出催化剂颗粒相流动方程 ,结合油气湍流流动 ,耦合集总动力学模型得到了新的催化裂化提升管反应器数学模型。该模型对工业提升管反应器的出口模拟结果与现场标定结果一致 ,证明了模型科学合理。从反应产物的沿程模拟结果看 ,柴油浓度在提升管高度为 5米处达最大值 ,然后下降。在提升管高度为 10米以下时汽油浓度随提升管高度增加而迅速增加 ,超过 10米时 ,汽油浓度是增加还是减少取决于原料油物性和操作参数。
Based on the particle velocity distribution function, the flow equation of catalyst particle phase was derived. Based on the turbulent flow of oil and gas, coupled with the lumped kinetic model, a new mathematical model of FCC riser reactor was obtained. The simulation results of the model on the outlet of the industrial riser reactor are consistent with those of on-site calibration, which proves that the model is scientific and reasonable. From the simulation results of the reaction products, the diesel fuel concentration reaches the maximum value at the riser height of 5 meters and then decreases. When the riser height is 10 meters or less, the gasoline concentration increases rapidly with riser height. When it exceeds 10 meters, the gasoline concentration increases or decreases depending on the physical properties of the feedstock and the operating parameters.