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首页> 外文会议>International Conference on Fuel Cell Science, Engineering and Technology; 20040614-20040616; Rochester,NY; US >A COMPACT MEMBRANE REACTOR FOR PRODUCING PURE HYDROGEN FROM ANHYDROUS AMMONIA
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A COMPACT MEMBRANE REACTOR FOR PRODUCING PURE HYDROGEN FROM ANHYDROUS AMMONIA

机译：紧凑的膜反应器，可从无氨生产纯氢气

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摘要

A significant barrier to the use of fuel cells for portable and small stationary applications is the lack of a supply of pure hydrogen with high specific energy. Anhydrous ammonia is an attractive fuel because it has very high intrinsic specific energy, requires no water for decomposition, and has established distribution channels throughout the world. A compact membrane reactor hydrogen generation system using anhydrous ammonia as a fuel has been developed which produces greater than 99.95% purity hydrogen at a rate sufficient to power a 100 W_e PEM fuel cell. Ammonia concentrations in the resultant hydrogen product are non-detectable. Hydrogen recovery through the membrane is as high as 80% and the membrane reactor thermal efficiency (LHV) is 70%. The primary features of this system are a catalytic reactor, a hydrogen separation membrane integrated into the reaction chamber, and a catalytic combustion module to provide heat for the ammonia decomposition reaction and subsequent conversion of trace ammonia reject. The membrane reactor is planar in configuration and allows for a simple, single unit design to provide pure hydrogen for fuel cell applications. The total system can provide specific energies of greater than 500 Wh/kg for a 72 hour run making it an attractive solution for portable and long unattended run time applications.
机译：在便携式和小型固定式应用中使用燃料电池的主要障碍是缺乏具有高比能的纯氢供应。无水氨是一种有吸引力的燃料，因为它具有很高的固有比能，不需要分解的水，并且在世界范围内建立了分销渠道。已经开发出使用无水氨作为燃料的紧凑型膜反应器氢气产生系统，该系统以足以为100 W_e PEM燃料电池供电的速率产生大于99.95％的氢气。所得氢产物中的氨浓度是不可检测的。通过膜的氢气回收率高达80％，膜反应器的热效率（LHV）为70％。该系统的主要特点是催化反应器，集成到反应室中的氢分离膜和催化燃烧模块，可为氨分解反应和随后的痕量氨废料转化提供热量。膜反应器为平面结构，可进行简单的单一单元设计，为燃料电池应用提供纯氢气。整个系统在72小时的运行中可提供大于500 Wh / kg的比能，使其成为便携式和长时间无人值守应用的理想解决方案。

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