石油炼制与化工

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Y型分子筛上甲醇脱水生成二甲醚的动力学研究

郭湘波 付强   

  1. 石油化工科学研究院工艺工程发展部 石油化工科学研究院22室
  • 收稿日期:2009-02-02 修回日期:1900-01-01 出版日期:2009-09-12 发布日期:2009-09-12
  • 通讯作者: 郭湘波

STUDY ON THE KINETICS OF METHANOL DEHYDRATION TO DIMETHYL ETHER ON ZEOLITE Y

  

  • Received:2009-02-02 Revised:1900-01-01 Online:2009-09-12 Published:2009-09-12

摘要: 采用积分反应器考察常压下Y型分子筛上甲醇脱水生成二甲醚的反应动力学。根据甲醇脱水反应机理和R-E、L-H反应历程,推导出四种甲醇脱水动力学方程。通过对试验数据的拟合,确定在Y型分子筛上甲醇脱水生成二甲醚的六参数反应动力学方程,方程计算值与试验值吻合较好。

关键词: 分子筛, 甲醇, 二甲醚, 动力学

Abstract: The kinetics of methanol dehydration to dimethyl ether (DME) over zeolite Y was studied in an integral reactor under atmospheric pressure. Based on the reaction mechanism of DME produced from methanol dehydration, four kinetic equations are obtained according to the Langmuir–Rideal (Rideal–Eley) mechanism and Langmuir-Hinshelwood mechanism. A six-parameter kinetic model of methanol dehydration to dimethyl ether over zeolite Y is obtained by data processing, and the calculated values are in good agreement with the test data.

Key words: zeolite, methanol, dimethyl ether, kinetics