Lurgi型甲醇合成反应器的动态模拟

Dynamic simulation of lurgi methanol synthesis reactor

为了能更好地预测甲醇合成系统的动态特性、合成与分析控制系统、模拟开停车及事故和培训操作人员等,对Lurgi型甲醇合成反应器的模型化与动态模拟技术进行了研究。根据物料及热量守恒方程建立了Lurgi型甲醇合成固定床反应器的动态模型,并根据模型的形式和特点选择了适当的数值计算方法,开发了动态模拟程序模块,并据此通过模拟计算获得了适宜的操作参数范围,这对于优化合成工艺,提高甲醇产量有明确的指导意义。应用结果表明,达到稳态时的结果能真实地反映生产实际情况,动态过程能很好地反映生产变化趋势。该模型对Lurgi型甲醇合成反应器动态特性和控制方案的研究,以及甲醇合成相关工艺仿真培训系统软件的开发等都有重要的意义。

The dynamic simulation technology of tube style reactor of methanol synthesis has been studied in this paper. According the equilibrium of mass, energy and reaction mechanism and production data, a dynamic methanol synthesis mechanism model of tube style reactor was founded. A suitable arithmetic was chosen based on the form and characteristics of the model and the dynamic simulation program module was developed. The running of the module indicated the result is consistent with production practice when reaching the steady state and the dynamic process can predict the changing trend. It can also simulate the accident condition. The module can be used not only in the studying about dynamic characteristic and method of control of the methanol synthesis unit but also in the develo- ping of simulation training system software of process engineering involving phosgene synthesis.