十元环分子筛催化正丁烯骨架异构制异丁烯反应性能研究  

STUDY ON SKELETAL ISOMERIZATION OF n-BUTENES INTO ISOBUTENE ON MOLECULAR SIEVE WITH 10 MR PORE STRUCTURES

作　　者：刘丽[1] 周峰[2] 乔凯[2] 刘振华[2] 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001 [2]中国石化抚顺石油化工研究院

出　　处：《石油炼制与化工》2013年第4期55-58,共4页Petroleum Processing and Petrochemicals

摘　　要：对比了AEL型、TON型和FER型3种十元环分子筛催化正丁烯骨架异构反应性能的差别,探讨了温度和空速对正丁烯转化率、异丁烯选择性和产率的影响。结果表明:AEL型和FER型分子筛适合应用于从正丁烯异构生产异丁烯的工业过程;AEL型分子筛适合于高温、低空速的运行模式,在压力0.25 MPa、温度450℃、质量空速4h-1时异丁烯产率为41.4%;而FER型分子筛适合应用于中低温、较高空速的运行模式,在压力0.25MPa、温度350℃、质量空速6h-1时异丁烯产率可达45.9%。The AEL-, TON-, and FER-type molecular sieves with 10 MR pore structures were used as the catalysts, and their skeletal isomerization performance of n-butene into isobutene were studied. The effect of temperature and space velocity on the n-butenes conversion, isobutene selectivity and yield was discussed. The results show that the AEL- and FER-type molecular sieves are suitable for the industrial process of isobutene isomerized from n-butene. The AEL-type molecule sieve prefers to be operated at the high temperature and low space velocity mode, and the isobutene yield is 41.4% at 0.25 MPa, 450 ℃ and space velocity of 4 h^-1. Whereas the FER-type one prefers to be used at the low temperature and high space velocity operation mode, and the maximum isobutene yield reaches 45.9 % at 0.25 MPa, 350 ℃ and space velocity of 6 h^-1.

关 键 词：正丁烯 骨架异构 异丁烯 SAPO-11 

分 类 号：TQ221.213[化学工程—有机化工]