三相床甲醇合成过程II.C302催化剂甲醇反应本征动力学

研究了 C30 2型铜基催化剂上由 CO、CO2 与 H2 合成 CH3OH的本征反应动力学。为使本征动力学模型能应用于三相床甲醇合成过程 ,实验所用原料气中 CO浓度较高 ,范围为 y CO=0 .0 8～ 0 .2 6 ,压力和温度均在合成甲醇工业操作的范围内。选用双速率的 Langmuir- Hinshelwood方程来描述系统的本征反应速率 ,该模型的计算值与实验结果相吻合。

Study on Three-phase Methanol Synthesis II. The Intrinsic Reaction Kinetics of Methanol Synthesis over C302 Catalyst

The intrinsic reaction kinetics of methanol synthesis, starting from carbon monoxide, carbon dioxide and hydrogen over a commercial C302 type copper based catalyst, was studied. To make the intrinsic kinetics be used for the three phase methanol synthesis process, the feed gases with higher contents of CO(8%~26%) have been used, but the temperature and pressure of reaction were still within the range of actual industrial process of gas phase methanol synthesis. The Langmuir Hinshelwood type dual rate equations have been selected to depict the intrinsic reaction rates. The calculated results of these kinetic models are in very good agreement with the experimental results. The intrinsic kinetic models were examined by the method of mathematics statistics and proved to be suitable. They can be used for process development and engineering design of methanol synthesis in three phase as well as in gas solid phase.