Experimental assessment of hydrogen separation from H2/CH4 mixtures by the "steam-iron process" in an interconnected circulating fluidized bed reactor

被引：10
作者：
Herguido, J. [1 ]
Pena, J. A. [1 ]
Carazo, E. [1 ]
机构：
[1] Univ Zaragoza, Aragon Inst Engn Res I3A, Catalysis Mol Separat & Reactor Engn Grp CREG, Zaragoza 50018, Spain
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 26期
关键词：
Hydrogen; Steam-iron; Interconnected circulating fluidized; bed reactor (ICFBR); Redox; Iron oxide; STORING HYDROGEN; REDOX PROCESS; REDUCTION; OXIDE; GAS; PARTICLES; KINETICS; SOLIDS; STAGE;
D O I：
10.1016/j.ijhydene.2014.07.006
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：
An experimental study devoted to the continuous separation of hydrogen from its mixtures with methane in continuous regime is presented. The study was carried out in a single-vessel reactor divided into two interconnected adjoining chambers, operating as fluidized beds and with a continuous flow of solids between them. The process is based on iron oxide being selectively reduced or oxidized, depending on the redox nature of the gas stream being fed to the respective chamber (steam-iron process or SIP). Conditions to minimize gas leakage between the interconnected beds, avoiding insufficient circulation of solids, have been experimentally determined. The effects of different interconnecting designs, spatial gas velocities and partial pressures of reactants have been tested. Also the effects of several operating parameters (primarily hydrogen content in the inlet gas stream and spatial velocities) on process efficiency have been analyzed. Accordingly, a final configuration has been proposed for stable hydrogen separation and tested for several hours of time on stream. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：14050 / 14060
页数：11
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