甲醇制烯烃催化剂活性变化规律与反应器模拟  

Catalytic Activity and Reactor Simulation of Methanol to Olefins

作　　者：齐国祯[1] 谢在库[2] 陈庆龄[1] 

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院,上海201208 [2]中国石油化工股份有限公司,北京100728

出　　处：《化学反应工程与工艺》2013年第2期170-175,共6页Chemical Reaction Engineering and Technology

基　　金：国家重点基础研究发展规划(973计划)项目(2003CB615801);上海市科委重大基础研究项目(03DJ14004)

摘　　要：基于在固定床反应器中已得到的SAPO-34催化剂上甲醇制烯烃反应动力学方程,对影响催化剂活性的多个因素进行分析,并采用该动力学方程在固定床反应器中进行模拟计算,考察动力学模型的可靠性。结果表明:催化剂活性随着接触时间的增加而减小,属于平行失活;反应体系中的水能有效减缓催化剂失活,而在较大的甲醇累积量时,水对催化剂平均活性的贡献越来越不明显。对模型计算值与实验值进行比较,结果表明,该总动力学方程的计算值与实验值吻合较好。Reaction kinetic equations were obtained from the kinetic study of methanol to olefins （MTO） on SAPO-34 catalyst in a fixed-bed isothermal integral reactor. Based on the above results many factors that could influence the catalytic activity were analyzed and the reliability of the kinetic model was tested by the reactor simulation in the fixed-bed reactor. The results showed that the catalytic activity decreases along with the increase of methanol contact time, a characteristics of parallel deactivation; existing water in the MTO system could effectively slow down the catalyst deactivation whereas this effect would diminish when a large amount of methanol accumulates in the system. A good agreement between the model prediction from the obtained kinetics and experimental data had been reached.

关 键 词：甲醇制烯烃 动力学 集总 固定床 

分 类 号：TQ013.2[化学工程] TQ018