摘要
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。
From the function of velocity distribution of particles,flow equations of catalyst particles phase were deduced.A new mathematical model of FCC riser reactor was acquired by combining oil gas turbulent flow and coupling lumping dynamic models. Simulating results in FCC riser reactor by the mathematical model are consitent with experimental results,which demonstrates the reasonability of the developed mathematical model.The simulating results throughout process showed that the concentration of diesel reaches the maximum at 5 meters of the riser height and decreases after that.When the riser height is bellow 10 meters,the gasoline concentration increases dramatically with the increase of the riser height.When the riser height is over 10 meters, variations of gasoline concentrations depend on the properties of feedstock and operating conditions.
出处
《炼油设计》
2000年第9期25-28,共4页
Petroleum Refinery Engineering
关键词
流化催化裂化
提升管式反应器
流化系统
动力学
催化动力学
数学模型
应用
fluid catalytic cracking
riser reactor
fluidized system
kinetics
catalytic kinetics
mathematical model
application
