【作者】 常青；

【导师】 李涛；

【作者基本信息】 华东理工大学 ， 化学工艺， 2011， 硕士

【摘要】 异丙苯是一种重要的有机中间体,世界范围内90%以上的异丙苯用做生产丙酮和苯酚,工业上主要的生产异丙苯的方法为苯与丙烯的烷基化反应。中国石油吉林石化使用的β分子筛工艺存在烷基化反应温度高、进料苯与丙烯摩尔比大、苯循环量大、能耗物耗高的问题。因此,进一步开发能够在低温、低进料苯与丙烯摩尔比下高效清洁生产异丙苯的新型分子筛催化剂具有重要的意义。本文研究采用了MCM-49分子筛催化剂,建立了苯与丙烯液相烷基化反应的实验装置及实验方法。采用固定床反应器,在100.0℃～140.0℃、3.0MPa、苯烯摩尔比1.0～4.0、丙烯液相质量空速3.5～8.0h-1的操作条件下,对MCM-49分子筛催化剂上苯与丙烯液相烷基化反应的工艺条件及宏观动力学做了研究。采用单因素实验法与正交实验法相结合的方法,实验研究得出苯与丙烯液相烷基化反应适宜工艺条件为：反应温度120.0℃、进料苯与丙烯摩尔比3.0、体积液时空速6.57h-1；通过实验建立了MCM-49分子筛催化剂上苯与丙烯液相烷基化反应宏观动力学模型,统计检验以及模型计算值与实验值的比较表明该模型可靠。更多还原

【Abstract】 Isopropyl benzene (IPB) is an important organic intermediate, and more than 90% of it was used for the production of phenol and acetone cumene. The main industrial method for the production of IPB is alkylation reaction of benzene with propylene. The traditional production processes, solid acid and aluminum chloride method, have many problems and gradually have been eliminated. Existing IPB production process has turned to efficient, clean zeolite catalyst technology. However, there are many problems in the China Petroleum Jilin Petrochemical’s alkylation process ofβmolecular sieve method, such as higher reaction temperature, higher molar ratio of benzene to propylene, larger volume of hydrocarbon fluid circulation, higher energy and material consumption. Therefore, further development of new efficient and clean zeolite catalysts for synthesis of IPB under lower temperature and molar ratio of benzene to propylene is of great significance.The experiment of liquid-phase alkylation of benzene and propylene was carried out over MCM-49 molecular sieve catalyst in this paper. The operating conditions and kinetics of the reaction over the catalyst MCM-49 molecular sieve catalyst are studied by varying space velocity (3.5-8.0 h-1) and molar ratio of benzene to propylene (1.0-4.0) at the temperature ranging from 100.0℃to 140.0℃in a tubular reactor. Single factor test and orthogonal experimental method were combined. Suitable process conditions of liquid-phase alkylation of benzene with propylene over the MCM-49 catalyst were obtained. Macroscopic chemical kinetics model was developed based on the experiment, and the statistical test and comparison between the calculated data with experimental data revealed that the model was reliable.更多还原