减压蜡油催化裂化结构导向集总动力学模型研究  

RESEARCH ON KINETIC MODEL FOR CATALYTIC CRACKING OF VACUUM GAS OIL USING STRUCTURE ORIENTED LUMP METHOD

作　　者：祝然[1] 沈本贤[1] 刘纪昌[1] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237

出　　处：《石油炼制与化工》2013年第2期37-42,共6页Petroleum Processing and Petrochemicals

基　　金：中国石油大学(华东)重质油加工国家重点实验室开放课题(SKLOP201003002)

摘　　要：应用结构导向集总方法构建基于分子尺度的减压蜡油催化裂化动力学模型。选取686种单核分子组成原料矩阵,采用非线性最小二乘法求取各分子含量;通过制定60条反应规则构建包含超过40 000个反应的反应网络;将动力学因子分5层进行计算,减少了参数数目;以矩阵变换的形式取代龙格库塔法求解反应网络,从而计算产物分布。采集实验室XTL-6型小型提升管催化裂化装置对中东混合蜡油的催化裂化实验数据对模型参数进行验证。结果表明,所构建的模型对产物分布的预测较为准确,相对误差均小于10%,且对温度、剂油比的变化具有较好的适应性。vacuum gas o matrix of VG vidual molecu Structure oriented lumping was applied to construct a catalytic cracking kinetic model of il （VGO） on molecular level. 686 kinds of single-core molecules were selected to form a O feedstock and non-linear least squares method was used to obtain the percentage of indile. 60 reaction rules were proposed to build a complex reaction network including more than 40 000 times of reactions. To reduce the number of variable parameters, rate constants were calcu- lated by 5 segments. The reaction network was solved by matrix transformation instead of Runge-Kutta method and product distributions could be obtained. Experimental data were collected from catalytic cracking of mixed Middle East VGO performed on a XTL-6 type of riser reactor for model verification. Comparison results showed that the calculated values of product distributions agreed well with the experimental data, the relative errors were less than 10 %. Besides, this model exhibited well adaptability with the changing of reaction temperature and catalyst to oil ratio.

关 键 词：催化裂化 动力学 结构导向集总方法 减压蜡油 提升管反应器 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]