NC306铜基催化剂上甲醇合成的本征动力学研究

Reaction Kinetics of Methanol Synthesis over Cu-Based Catalyst NC306

采用微型等温积分反应器,在5 Mpa、225～271 ℃,原料气中CO、CO2和H2的摩尔分数分别为5.13%～14.23%、0.56～9.20%和61.96%～77.48%的条件下,对国产NC306型低压铜基甲醇合成催化剂的本征动力学特性进行了实验研究. 基于CO和CO2竞争加氢双路线合成甲醇反应模式,以Simplex-Powell复合优化法和Merson迭代法对动力学实验数据进行搜索、选优,建立了NC306型低压铜基甲醇合成催化剂的L-H-H-W型动力学模型. 统计检验结果表明,所建模型良好地吻合了实验数据,是适宜和可信的.

The intrinsic kinetic experiments of low-pressure methanol synthesis over a domestic Copper-based catalyst, NC306, were carried out in an integral micro-reactor under the following conditions： 5 MPa, 225～271 ℃ and feed compositions （molar fraction） CO 5.13 %～14.23 %,CO2 0.56%～9.20% and H2 61.96%～77.48%. Based on the reaction network of double routine synthesis, in which the methanol was supposed coming from both CO and CO2, the L-H-H-W type kinetic models for NC306 catalyst was built and kinetic parameters were estimated by Simplex-Powell optimal method and Merson integral method. Statistical test showed that the kinetic models established here not only agree well with the experiment results, but are highly acceptable and reliable.