Chemical Industry and Engineering Progree ›› 2015, Vol. 34 ›› Issue (05): 1307-1310,1344.DOI: 10.16085/j.issn.1000-6613.2015.05.021

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Influence of impurities on the performance of Pt-Sn-K/Al2O3 catalyst for isobutane dehydrogenation

ZHOU Guanglin, JIANG Xiaoyang, CUI Dandan   

  1. Institute of New Energy, China University of Petroleum, Beijing 102249, China
  • Received:2014-09-23 Revised:2014-11-01 Online:2015-05-05 Published:2015-05-05

原料中杂质对异丁烷脱氢Pt-Sn-K/Al2O3催化剂性能的影响

周广林, 蒋晓阳, 崔丹丹   

  1. 中国石油大学(北京)新能源研究院, 北京 102249
  • 通讯作者: 周广林(1966-),男,博士,副教授,主要从事石油化工和煤化工工艺和催化剂、吸附剂开发和工业应用.E-mailzhouguanglin2@163.com.
  • 作者简介:周广林(1966-),男,博士,副教授,主要从事石油化工和煤化工工艺和催化剂、吸附剂开发和工业应用.E-mailzhouguanglin2@163.com.

Abstract: Effect of impurities,such as ethyl mercaptan,methyl alcohol,butane and 1-butylene,on the performance of Pt-Sn-K/Al2O3 catalyst in the reaction of isobutane dehydrogenation to isobutene was investigated on a fixed bed reactor,and the product was analyzed by gas chromatography. The results showed that ethyl mercaptan,methyl alcohol,butane and1-butylene all had great influence on the isobutane conversion and isobutene selectivity of Pt-Sn-K/Al2O3 catalyst under the reaction condition of isobutane dehydrogenation to isobutene,i.e. at the temperature of 580℃,pressure of 0.1MPa,feedstock of H2/i-C4H10(V)= 2,total space velocity GHSV= 2000h-1,GHSV(i-C4H10)= 667h-1;and the higher the impurities content was,the greater the influence was. Furthermore,how the impurities caused the deactivation of catalyst was analyzed.

Key words: impurities, catalyst, alkane, isobutane, dehydrogenation, reaction

摘要: 采用固定床法考察了原料异丁烷中乙硫醇、甲醇、正丁烷和1-丁烯等杂质对Pt-Sn-K/Al2O3催化剂上异丁烷脱氢制异丁烯反应性能影响,反应产物使用气相色谱进行分析.实验结果表明,在异丁烷脱氢制异丁烯正常反应条件下,即温度580℃、压力0.1MPa、进料组成H2/i-C4H10(体积比)= 2、总空速GHSV = 2000h-1、GHSV(i-C4H10)= 667h-1,乙硫醇、甲醇、正丁烷和1-丁烯对Pt-Sn-K/Al2O3催化剂的异丁烷转化率和异丁烯选择性均有较大的影响,且杂质含量越高,对催化剂的转化率和选择性影响越大.并对杂质造成催化剂失活的原因进行了分析.

关键词: 杂质, 催化剂, 烷烃, 异丁烷, 脱氢, 反应

CLC Number: 

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