甲醇脱水制二甲醚内冷管式反应器数学模拟  

Simulation of the internal cooling tubular reactor for Methanol dehydration to dimethyl ether

作　　者：沈琛[1] 马宏方[1] 应卫勇[1] 房鼎业[1] 

机构地区：[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

出　　处：《计算机与应用化学》2011年第2期139-142,共4页Computers and Applied Chemistry

基　　金：国家科技支撑计划(No.2007BAA08B04)

摘　　要：建立了甲醇脱水制二甲醚内冷管式反应器一维拟均相数学模型,在催化床进口温度270℃、反应压力1.1 MPa、进口气量1600 kmol/h的标准状况下,获得了催化床温度和各组分浓度的分布。在进口温度250℃～290℃,反应压力0.5 MPa～1.7 MPa,进口气量1400 kmol/h～1800 kmol/h的范围内,模拟计算了催化床进口温度、操作压力和进口气量对反应器催化床温度分布、甲醇转化率和二甲醚产量的影响。结果表明:催化床进口温度、操作压力升高,床层热点温度和甲醇转化率升高,二甲醚产量增加;进口气量增加,床层热点温度和甲醇转化率降低,二甲醚产量有所增加。One-dimensional mathematical model of the internal cooling tubular reactor for methanol dehydration to dimethyl ether was established,the gas concentration and temperature profiles were obtained under the standard operating conditions which inlet temperature was 270℃,pressure 1.1 MPa and inlet volumetric flow rate 1600 kmol/h.The influence of inlet temperature,pressure and inlet volumetric flow rate on temperature profiles,the methanol conversion and production of dimethyl ether in catalyst bed was simulated with the conditions：inlet temperature 250℃～290℃,pressure 0.5 MPa～1.7 MPa,inlet volumetric flow rate 1400 kmol/h～1800 kmol/h.The simulation results showed that hotspot temperature of catalyst bed,methanol conversion and production of dimethyl ether rise markedly with the increase of inlet temperature and pressure of catalyst bed,while with the increase of the inlet volumetric flow rate,hotspot temperature and methanol conversion drop,but the production of dimethyl ether increases.

关 键 词：甲醇 二甲醚 内冷管式反应器 数学模拟 

分 类 号：TQ223.24[化学工程—有机化工] TQ032.41