Cyclohexane Dehydrogenation in Solar-Driven Hydrogen Permeation Membrane Reactor for Efficient Solar Energy Conversion and Storage  

作　　者：WANG Xiaochuan WANG Bingzheng WANG Man LIU Qingjun WANG Hongsheng 

机构地区：[1]MOE Key Laboratory of Hydrodynamic Machinery Transients,Ministry of Education,School of Power and Mechanical Engineering,Wuhan University,Hubei 430072,China [2]Department of Chemical System Engineering,School of Engineering,The University of Tokyo,Tokyo 113-8656,Japan [3]China Pingmei Shenma Energy and Chemical Group Corporation Limited,Henan 476000,China

出　　处：《Journal of Thermal Science》2021年第5期1548-1558,共11页热科学学报（英文版）

基　　金：This work is funded by the National Natural Science Foundation of China(No.51906179);the China Scholarship Council(No.201906275035);the National Key Research and Development Program of China(No.2018YFC0808401).

摘　　要：Cyclohexane dehydrogenation in the solar-driven membrane reactor is a promising method of directly producing pure hydrogen and benzene from cyclohexane and storing low-grade solar energy as high-grade chemical energy.In this paper,partial pressure of gases,conversion rate of cyclohexane,and energy efficiency of the reactor are analyzed based on numerical simulation.The process of cyclohexane dehydrogenation under four temperatures(200℃,250℃,300℃,and 350℃)and four permeate pressures(0.050 MPa,0.025 MPa,0.010 MPa,and 0.001 MPa)were studied.A complete conversion rate(99.9%)of cyclohexane was obtained as the reaction equilibrium shifts forward with hydrogen separation.The first-law thermodynamic efficiency,solar-to-fuel efficiency,and exergy efficiency could reach as high as 94.69%,46.93%and 93.08%,respectively.This study indicates that it is feasible to combine solar energy supply technology with cyclohexane dehydrogenation reaction integrated with membrane reactor.

关 键 词：cyclohexane dehydrogenation solar energy utilization membrane reactor kinetic and thermodynamic analysis hydrogen generation solar thermochemistry 

分 类 号：TQ116.2[化学工程—无机化工] TK512[动力工程及工程热物理—热能工程]