汽油催化裂解制丙烯集总动力学模型 Ⅰ.动力学模型确立  

A Kinetic Model of Gasoline Catalytic Cracking to Propylene Ⅰ.Model Establishment

作　　者：何金龙[1] 李博[2] 李正[1] 侯栓弟[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化齐鲁分公司,山东淄博255411

出　　处：《石油学报（石油加工）》2013年第2期289-296,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展计划"973"项目(2012CB224806)资助

摘　　要：利用微型固定床反应器研究了C5～C8+汽油窄馏分的催化裂解反应特性。结果表明,汽油中的烯烃是生成丙烯的最佳前驱体,其反应活性和丙烯选择性均高于烷烃,丙烯产率主要由生成丙烯的裂解反应和丙烯二次转化反应之间的相对关系决定。在此基础上,按照原料和产物的馏程和化学组成进行集总划分,同时兼顾氢转移、环化、芳构化和缩合等重要的二次反应,建立了一种汽油催化裂解制丙烯反应动力学模型。该动力学模型可以对产物的产率以及化学组成进行预测和模拟。The kinetic reaction performances of narrow distillations, which were separated by carbon number in gasoline cut, were studied by using fixed bed. The experimental results showed that gasoline olefins were the best precursor for propylene production, and the reaction activity and propylene selectivity of olefins were higher than those of alkane. The propylene yield was determined by the rate of hydrocarbon cracking reaction and the second conversion reaction of propylene. And then a kinetic model was derived. Lumps were defined not only by the boiling ranges of the feedstock and products，but also by their chemical compositions. Through the reasonably simplified reaction network, a kinetic lumping model was proposed in consideration of secondary reactions, such as hydrogen transfer, cyclization, aromatization and condensation, etc. The said model can not only predict the product yields, but also simulate the chemical composition of the products.

关 键 词：催化裂解 丙烯 汽油馏分 反应动力学模型 

分 类 号：TE624.4[石油与天然气工程—油气加工工程] TQ221.212[化学工程—有机化工]