Cruellas Aitor, Ververs Wout, Annaland Martin van Sint, Gallucci Fausto
Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
Membranes (Basel). 2020 Jul 14;10(7):152. doi: 10.3390/membranes10070152.
Novel reactor configurations for the oxidative coupling of methane (OCM), and in particular membrane reactors, contribute toward reaching the yield required to make the process competitive at the industrial scale. Therefore, in this work, the conventional OCM packed bed reactor using a Mn-NaWO/SiO catalyst was experimentally compared with a membrane reactor, in which a symmetric MgO porous membrane was integrated. The beneficial effects of distributive feeding of oxygen along the membrane, which is the main advantage of the porous membrane reactor, were demonstrated, although no significant differences in terms of performance were observed because of the adverse effects of back-permeation prevailing in the experiments. A sensitivity analysis carried out on the effective diffusion coefficient also indicated the necessity of properly tuning the membrane properties to achieve the expected promising results, highlighting how this tuning could be addressed.
用于甲烷氧化偶联（OCM）的新型反应器构型，特别是膜反应器，有助于达到使该工艺在工业规模上具有竞争力所需的产率。因此，在本工作中，对使用Mn-NaWO/SiO催化剂的传统OCM固定床反应器与集成了对称MgO多孔膜的膜反应器进行了实验比较。尽管由于实验中普遍存在的反向渗透的不利影响，在性能方面未观察到显著差异，但多孔膜反应器的主要优点——沿膜分布供氧的有益效果得到了证明。对有效扩散系数进行的敏感性分析还表明，有必要适当调整膜的性能以获得预期的理想结果，并突出了如何进行这种调整。
