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首页> 外文期刊>Catalysis Today >Design and operation of an ammonia-fueled microchannel reactor for autothermal hydrogen production
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Design and operation of an ammonia-fueled microchannel reactor for autothermal hydrogen production

机译：氨燃料微通道反应器进行自热氢气生产的设计与运行

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摘要

The present work describes the design and operation of an autothermal microchannel reactor for portable and distributed hydrogen production via ammonia decomposition. The microreactor consists of an array of alternating catalytic plate channels where the heat for the endothermic ammonia decomposition reaction is supplied in adjacent microchannels via exothermic oxy-fuel combustion of ammonia. The reactor performance was investigated under various operating conditions, such as ammonia flow rate in the decomposition channel, combustible feed flow rate, and fuel equivalence ratios. The best operating conditions were obtained at ammonia flow rate of 0.4 NLPM, combustible feed flow rate of 0.8 NLPM, and fuel-rich operation corresponding to fuel equivalence ratio of 1.2. At these conditions, 99% NH3 conversion was obtained, and the reactor could generate enough hydrogen for a 45 W-e fuel cell system at an equivalent reactor power density of 1.5 kW(e)/L. Overall, the work reported here successfully demonstrated the feasibility of ammonia decomposition for distributed hydrogen generation and delineated the attainable operating region, results of which could be used further to advance and scale-up autothermal ammonia-fueled microchannel reactors in the kW-range.
机译：本工作描述了通过氨分解的便携式和分布氢气产生的自热微通道反应器的设计和操作。微反应器由一系列交替的催化板通道组成，其中通过氨的放热氧 - 燃料燃烧，在相邻的微通道中供给吸热氨分解反应的热量。在各种操作条件下研究了反应器性能，例如分解通道中的氨流量，可燃饲料流速和燃料等效比。在0.4nLPM的氨流速下获得最佳操作条件，可燃进给流速为0.8nLPM，富含燃料的操作，对应于1.2的燃料等效比。在这些条件下，＆获得99％NH 3转化率，并且反应器可以以1.5kW（e）/ L的等效反应器功率密度为45W-E燃料电池系统产生足够的氢。总体而言，这里报道的工作成功地证明了分布氢生成的氨分解的可行性，并描绘了可获得的操作区域的结果，其结果可以进一步用于在kW范围内前进和放大自热氨燃料微通道反应器。

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