外环流气升式反应器中催化丙烯环氧化反应  

Propylene Epoxidation Catalyzed by TS-1 in External Airlift Reactors

作　　者：苏雪丽[1] 王保国[1] 王春艳[1] 吴玉龙[1] 米镇涛[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《化学工业与工程》2004年第3期165-168,共4页Chemical Industry and Engineering

基　　金：国家重点基础科学研究计划(973)资助项目(G2000048005)

摘　　要：本论文研究了外环流气升式反应器中TS-1催化丙烯环氧化反应,以单位催化剂空时收率为目标,进行了反应工艺条件的优化,考察了结构参数,上升管与下降管横截面积之比Ar Ad对反应的影响。In this thesis,propylene epoxidation catalyzed by TS-1 in external airlift reactors was studied. Firstly,the operation parameters were investigated so as to achieve higher yield of propylene oxide per gram catalyst. The optimum results were as follows:The optimum catalyst content was 3%, the preferred liquid and gas flow rates were 2 times of 720mL.h^(-1) and 290mL.min^(-1) respectively.Secondly,the study of the influence of geometry parameter A _r/ A _d was carried out. Under the same ratio of reactor volume to liquid inlet flow rate, conversion, selectivity and yield of propylene oxide per gram catalyst decreased when A _r/ A _d increased. At the same liquid inlet flow rate, the result that conversion,selectivity reduce at a higher degree was obtained,which proved that mass transfer influenced the propylene epoxidation and the mass transfer was affected more by apparent gas velocity than by reaction time.

关 键 词：外环流气升式反应器 TS-1 丙烯环氧化反应 工艺条件 结构参数 

分 类 号：TQ051.19[化学工程] O643.322[理学—物理化学]