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绝热固定床反应器甲醇脱水合成二甲醚的实验和模型研究_英文_.pdf

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CATALYSIS, KINETICS AND REACTORS Chinese Journal of Chemical Engineering, 17(4) 630—634 (2009) Experimental Study and Modeling of an Adiabatic Fixed-bed Reactor for Methanol Dehydration to Dimethyl Ether 1 1,* 2 3 M. Fazlollahnejad , M. Taghizadeh , A. Eliassi and G. Bakeri 1 Department of Chemical Engineering, Babol University of Technology, 4714871167 Babol, Iran 2 Chemical Industries Research Department, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran 3 Catalyst Research Group, Petrochemical Research and Technology Company, National Petrochemical Company, Tehran, Iran Abstract One-dimensional heterogeneous plug flow model was employed to model an adiabatic fixed-bed reactor for the catalytic dehydration of methanol to dimethyl ether. Longitudinal temperature and conversion profiles pre- dicted by this model were compared to those experimentally measured in a bench scale reactor. The reactor was packed with 1.5 mm γ-Al O pellets as dehydration catalyst and operated in a temperature range of 543-603 K at an 2 3 atmospheric pressure. Also, the effects of weight hourly space velocity (WHSV) and temperature on methanol con- version were investigated. According to the results, the maximum conversion is obtained at 603.15 K with WHSV of 72.87 h-1. Keywords methanol, dimethyl ether, modeling, fixed-bed reactor 1 INTRODUCTION In our previous work, the effects of temperature and feed composition on catalytic dehydration of Dimethyl ether (DME), a
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