文献类型：期刊文献

中文题名：合成气制二甲醚管壳型反应器的二维数学模型与分析

英文题名：Two-dimensional Mathematical Model and Analysis of Tube-shell Type Reactor for Synthesis of Dimethyl Ether from Syngas

作者：王宇[1];马宏方[1];应卫勇[1];房鼎业[1]

机构：[1]华东理工大学大型工业反应器工程教育部工程研究中心,化学工程联合国家重点实验室,上海200237

年份：2010

卷号：10

期号：5

起止页码：933

中文期刊名：过程工程学报

外文期刊名：The Chinese Journal of Process Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家科技支撑计划基金资助项目(编号:2006BAE02B02)

语种：中文

中文关键词：合成气;二甲醚合成;管壳型反应器;二维数学模型

外文关键词：syngas; dimethyl ether synthesis; tube-shell reactor; two-dimensional mathematical model

摘要：建立了合成气一步法制二甲醚管壳式固定床反应器二维拟均相模型,采用有限差分和Runge-Kutta相结合的方法(MOL法)求解催化床层内关键组分浓度与床层温度的轴向与径向分布,模拟分析了反应管直径和操作条件对反应器性能的影响.结果表明,当反应管内径为38mm时,标况下床层热点在距反应管入口2.1m处,热点温度为262.76℃,最大径向温度差为4.1℃,CO单程转化率为64.12%,二甲醚选择性为89.86%.反应管直径增大导致热点温度升高,沸腾水温度、入塔气量和CO含量都对CO单程转化率、二甲醚选择性和床层热点温度有较大影响.
Two-dimensional mathematical model of tube-shell type one-step dimethyl ether synthesis reactor was established.Profiles of concentration and bed temperature in axial and radial direction were obtained by MOL algorithm.Reactor performance was analyzed by simulation.The results showed that when operated under the standard conditions in the reactor with the tube diameter of 38 mm,the hot point was located 2.1 m away from the entry of reactor tube with the hot point temperature of 262℃,and with a per-pass conversion rate of CO of 64.12%,while selectivity of DME was 89.86%.The maximum radial temperature difference was 4.1℃ and located at the hot point.Hot point temperature increased with the tube diameter.Operation conditions,including temperature of boiling water,flow rate of feed gas and content of CO,had significant influence on per-pass conversion rate of CO,selectivity of DME and hot point temperature.