CFD Simulation of Membrane Reactor for Dehydrogenation of Ethylbenzene to Styrene
Volume Title: 1
Authors
1Faculty of Chemical & Petroleum and Gas Engineering, Semnan University, Semnan, Iran
2Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan, Iran
3استاد دانشکده مهندسی شیمی، نفت و گاز دانشگاه سمنان
Abstract
In this study, dehydrogenation of ethylbenzene to styrene was studied in an isothermal high-temperature shell-and tube membrane reactor (MR) with a Pd-Ag membrane and a commercial iron oxide-based catalyst (component: 〖Fe_2 O〗_3, K_2 CO_3, MgO, Cr_2 O_3, CrO_3). A 2D-axisymmetric computational fluid dynamic (CFD) model was developed to investigate the effect of operational conditions on H2 separation in dense Pd-Ag membrane reactor (MR). Various operating parameters including reaction temperature, pressure and liquid hour space velocity (LHSV) have been considered on hydrogen mole fraction distribution on the membrane. Results showed LHSV effect on MR performance is considerable respect to other parameters so that by changing the LHSV from 0.36 to 3 the amount of hydrogen changes from 0 to 0.019 in the retentate output.
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