Co-current and counter-current configurations for ethanol steam reforming in a dense Pd-Ag membrane reactor

被引:40
作者
Gallucci, F. [2 ]
De Falco, M. [3 ]
Tosti, S. [4 ]
Marrelli, L. [3 ]
Basile, A. [1 ]
机构
[1] Univ Calabria, ITM CNR, Inst Membrane Technol, I-87030 Arcavacata Di Rende, CS, Italy
[2] Univ Twente, Fac Sci & Technol, Fundamentals Chem React Engn Grp, NL-7500 AE Enschede, Netherlands
[3] Univ Roma La Sapienza, Dipartimento Ingn Chim & Mat, I-00184 Rome, Italy
[4] CR ENEA Frascati, Dipartimento Fus Tecnol & Presidio Nucl, I-00044 Frascati, RM, Italy
关键词
Ethanol steam reforming; Membrane reactor; Pd membranes; Hydrogen production; Modelling;
D O I
10.1016/j.ijhydene.2008.07.026
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The ethanol steam-reforming reaction to produce pure hydrogen has been studied theoretically. A mathematical model has been formulated for a traditional system and a palladium membrane reactor packed with a Co-based catalyst and the simulation results related to the membrane reactor for both co-current and counter-current modes are presented in terms of ethanol conversion and molar fraction versus temperature, pressure, the molar feed flow rate ratio and axial co-ordinate. Although the counter-current mode does not always give an ethanol conversion higher than the one obtained in membrane reactor operated in co-current mode, in the first case it is always possible to extract more hydrogen from the reaction zone. With this theoretical analysis, different values of the operating parameters that allow to have a CO-free hydrogen stream and a complete recovery of the hydrogen from the lumen side of the reactor are investigated. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:6165 / 6171
页数:7
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