Influence of impurities on hydrogen absorption in a metal hydride reactor

被引：52
作者：
Dunikov, Dmitry [1 ]
Borzenko, Vasily [1 ]
Malyshenko, Stanislav [1 ]
机构：
[1] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 18期
关键词：
Hydrogen; Storage; Hydride; Heat transfer; Impurities; Critical phenomenon; HEAT-TRANSFER; THERMAL-CONDUCTIVITY; STORAGE; GAS; SEPARATION; DESIGN; PURIFICATION; LANI5; OPTIMIZATION; EXCHANGERS;
D O I：
10.1016/j.ijhydene.2012.04.078
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：
Absorption of pure and impure hydrogen in AB(5)-type metal hydride reactors is experimentally investigated. The process can be divided into three phases: "adiabatic heating" phase, "heat transfer" phase and "end of reaction" phase. Critical phenomenon is observed between "adiabatic heating" and "heat transfer" phases. The crisis occurs when temperature of metal hydride bed reaches maximum, which is close to equilibrium temperature for inlet pressure, and is followed by significant slowdown of the reaction rate. Presence and accumulation of impurities in the voids of metal hydride bed precipitates crisis due to decreasing of hydrogen partial pressure. Two strategies of hydrogen purification with the aid of metal hydrides are discussed. Mixture filtration through the metal hydride bed is recommended for high concentration of impurities and PSA (or TSA) suits for nearly pure hydrogen. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：13843 / 13848
页数：6
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