Mathematical modelling of simultaneous hydrogenation of benzene and ethane dehydrogenation in a membrane reactor

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-04-14 DOI:10.1016/j.csite.2025.106133

Dongdong Zhao , Jingwei Meng , Xuemei Lin

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Abstract

Membrane reactors for hydrogen production are interesting devices that allow us to perform dehydrogenation and hydrogenation reactions in one system simultaneously. In this work, a two-dimensional mathematical model has been developed for the investigation of mass and heat transfer in a membrane reactor where both ethane dehydrogenation reaction and benzene hydrogenation are carried out at the same time. The effect of inlet temperatures and porosity in both sides of the membrane reactor on the performance of the system has been investigated. The results showed that the benzene conversion is 0.14 %, 0.18 %, and 0.07 % at tube side inlet temperatures of 700 K, 800 K, and 900 K. It means that there is an optimum inlet temperature in the tube side of the membrane reactor. The increase in porosity from 0.3 % to 0.8 % in the shell side results in a decrease in the conversion of both benzene and ethane in the system. Also, the outlet temperatures were decreased in both sides with the increase of shell side porosity.

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膜反应器中苯加氢和乙烷脱氢的数学建模

用于制氢的膜反应器是一种有趣的装置，它允许我们在一个系统中同时进行脱氢和加氢反应。本文建立了乙烷脱氢反应和苯加氢反应同时进行的膜反应器传质传热的二维数学模型。研究了膜反应器入口温度和两侧孔隙率对系统性能的影响。结果表明，在700 K、800 K和900 K的进口温度下，苯转化率分别为0.14%、0.18%和0.07%。这意味着膜反应器管侧存在一个最佳入口温度。壳侧孔隙度从0.3%增加到0.8%，导致体系中苯和乙烷的转化率降低。两侧出口温度随壳侧孔隙率的增大而降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.