加氢裂化工艺操作过程的优化分析

摘要

A numerical model was established by spline curve interpolation method to study the rela-tionship between physico-chemical properties of the cracking products and the operation parameters of throughput and temperature in hydrocracking process.This model was applied to the optimization anal-ysis of a VGO hydrocracking process.The smoke point and freezing point of aviation jet fuel,diesel yield as well as middle distillate selectivity were used as the constraint obj ects in the optimization to in-vestigate the feasible operation parameter ranges of throughput and reaction temperature.Under the constraint objects,the minimum conversion was calculated by the model to get the operation parameters for high tail oil yield and compared with the experimental data.The comparison shows that the method has a good effectiveness and the data calculated is close to the experimental results.%通过样条曲线插值的数学方法，建立了加氢裂化反应过程中的处理量、温度对裂化产品物化性质影响的数值模型，并将该模型应用于减压蜡油（VGO）的加氢裂化工艺优化分析。该优化问题以VGO 加氢裂化反应的处理量和温度为变量，以产品中喷气燃料馏分的烟点、冰点，柴油馏分收率以及中油选择性作为约束条件，考察在上述约束条件下工艺操作参数的可行区间，并在此相关条件约束下，基于所确立的数学模型计算相关转化率的最小值，以便获得系统高产尾油时的工艺操作参数，并与实验数据进行对比。对比结果表明，该方法效果良好，所得数据与实验数据相近。