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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