小型反应器内气相甲醇制二甲醚操作优化与分析  

Optimization and Analysis of Operation of Vapor Phase Methanol to Dimethyl Ether in Small Reactor

作　　者：熊亮 王群 周宇航 王芬芬 Xiong Liang;Wang Qun;Zhou Yuhang;Wang Fenfen(School of Chemical Engineering and Pharmacy,Jingchu University of Technology,Jingmen Hubei 448000,China)

机构地区：[1]荆楚理工学院化工与药学院,湖北荆门448000

出　　处：《山西化工》2024年第1期120-122,共3页Shanxi Chemical Industry

基　　金：湖北省2021年大学生创新创业训练计划项目(KC2021028)。

摘　　要：通过对小型反应器内气相甲醇催化制二甲醚反应进行高温热态实验,探究了反应温度与甲醇质量空速对催化剂床层轴向温度分布的变化规律,同时分析了不同的操作条件对甲醇转化率和二甲醚选择性的影响,从而优化小型反应器的操作参数。研究结果表明:当甲醇质量空速为1 h^(-1)时,在不同反应温度条件下,催化剂床层会出现约1.7~2.9℃的轴向绝热温升,且催化剂床层热点温度接近于催化剂床层轴向中部位置;当反应温度为250℃,甲醇质量空速为1 h^(-1)时,催化剂床层轴向温度分布曲线较为平缓,且甲醇转化率和二甲醚收率均较高,即反应温度为250℃及甲醇质量空速为1 h^(-1)可视为该小型反应较优的操作条件。By conducting high-temperature hot state experiments on the gas-phase methanol catalytic synthesis of dimethyl ether in a small-scale reactor,the variation law of reaction temperature and methanol mass space velocity on the axial temperature distribution of the catalyst bed was investigated.At the same time,the influence of different operating conditions on methanol conversion rate and dimethyl ether selectivity was analyzed,in order to optimize the operating parameters of the small-scale reactor.The research results show that when the mass space velocity of methanol is 1 h^(-1),under different reaction temperature conditions,the catalyst bed will experience an axial adiabatic temperature rise of about 1.7~2.9℃,and the hot spot temperature of the catalyst bed will be close to the central position of the catalyst bed axis.When the reaction temperature is 250℃and the methanol mass space velocity is 1 h^(-1),the axial temperature distribution curve of the catalyst bed is relatively smooth,and the methanol conversion rate and dimethyl ether yield are both high.Therefore,a reaction temperature of 250℃and a methanol mass space velocity of 1 h^(-1)can be considered as the optimal operating conditions for this small-scale reaction.

关 键 词：甲醇 二甲醚 反应温度 转化率 小型反应器 

分 类 号：TQ223.24[化学工程—有机化工]