Designing graded catalytic domain to homogenize temperature distribution while dry reforming of CH4
Designing graded catalytic domain to homogenize temperature distribution while dry reforming of CH4
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DOI：
10.1016/j.ijhydene.2018.07.084
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发表时间：
2018-09-06
影响因子：
7.2
通讯作者：
Shiratori, Yusuke
中科院分区：
文献类型：
--
作者：
Aydin, Ozgur;Kubota, Atsushi;Shiratori, Yusuke
当在配备具有均匀催化活性的内部或外部催化域的固体氧化物燃料电池（SOFC）系统中利用沼气时，由于入口区域中甲烷的快速转化，重整反应的速率沿流场发生显着变化。因此，沿着流场会产生剧烈的温度变化，导致相邻部件产生热应力。为了减轻温度变化，根据沿流场的催化剂负载分级的催化域设计是一种有前途的解决方案，为此，我们提出了一种基于数值建模和沿重整器的原位温度测量的策略。我们设计了一个具有均匀温度分布的分级催化域，并通过实验进行了演示，旨在在 SOFC 系统中有效利用沼气。 (C) 2018 氢能源出版物有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
While utilizing biogas in Solid Oxide Fuel Cell (SOFC) systems equipped with either internal or external catalytic domain possessing a uniform catalytic activity, the rate of the reforming reaction significantly changes along the flow field due to the rapid conversion of the methane in the inlet region. Thus, a dramatic temperature variation develops along the flow field, resulting in thermal stress on the adjacent components. To mitigate the temperature variation, design of a catalytic domain graded in terms of the catalyst loading along the flow field is a promising solution, for which herein we present a strategy based on numerical modeling and in situ temperature measurement along the reformer. We design a graded catalytic domain for a uniform temperature distribution and demonstrate it experimentally, aiming the efficient use of biogas in SOFC systems. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.