浆态床甲醇合成反应过程数学模拟

Mathematical Simulation of Methanol Synthesis in a Slurry Reactor

在固定床等温积分反应器中回归了LP201催化剂上的甲醇合成反应动力学参数,在液固拟均相、全混流、气相流动形式分别为全混流、平推流的基础上建立了浆态床搅拌反应器中甲醇合成反应的数学模型.模拟结果显示,根据所得动力学参数,计算结果与实验结果吻合良好;气相甲醇合成过程中气相流动形式明显影响反应效率;在液相甲醇合成过程中,气相的流动形式对反应影响不大;气液传质阻力对反应有较显著的影响,必须与反应过程同时加以考虑.

A mathematical model for methanol synthesis in a mechanically stirred slurry reactor based on treating the liquid and solid phases as a completely mixed pseudo-homogeneous phase, and with the gas phase in the two cases of （1） complete mixing, and （2） plug flow was developed. The kinetic parameters used were obtained by regression from methanol synthesis on LP201 catalyst developed by Tsinghua University in an isothermal fixed bed integral reactor. The simulated results showed good agreement with the experimental results. For methanol synthesis in the gas phase, the influence of the gas phase flow pattern on the reaction was large. However, the influence of the gas phase flow pattern was small for liquid phase methanol synthesis. The influence of gas-liquid mass transfer resistance was important on liquid phase methanol synthesis, and it should be included with the reaction kinetics in a simulation.