On the presumption that an axial-radial flow pattern (AR) can contribute to a more even distribution of fresh syngas over the catalyst bed, in this study, effects of AR pattern in a mega methanol plate reactor are studied, and the corresponding results are compared with that of fully axial (APR) or radial (RPR) ones. For this purpose, a two-dimensional mathematical model is developed for the AR, while this is one-dimensional for APR and RPR. Afterward, partial differential equations are solved with orthogonal collocation of finite elements method, and the modeling results are compared with industrial data, indicating a good agreement. Besides, the AR reactor is optimized (OAR) using differential evolution (DE) method in order to maximize methanol production. Results demonstrate that the AR can promote methanol production up to 6 and 3% relative to the APR and RPR, respectively. Moreover, in the OAR, 2% and 14 °C increase in the feed flow rate and temperature, correspondingly, results in 3.5% improvement in the methanol production.

假定轴向辐射流型（AR）可以促进新鲜合成气在催化剂床上的分布更均匀，在这项研究中，研究了AR型在大型甲醇平板反应器中的作用，并得出了相应的结果与全轴向（APR）或径向（RPR）相比。为此，为AR开发了一个二维数学模型，而对于APR和RPR则是一维数学模型。然后，用有限元正交配置法求解偏微分方程，并将建模结果与工业数据进行比较，表明吻合良好。此外，使用微分进化（DE）方法优化了AR反应器（OAR），以最大程度地提高甲醇产量。结果表明，相对于APR和RPR，AR可以分别将甲醇的产量提高多达6％和3％。此外，在OAR中，进料流速和温度分别提高2％和14°C，可导致甲醇生产提高3.5％。