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Influence of Oxygenated Compounds on Reaction Products in a Microwave Plasma Methane Pyrolysis Assembly for Post-Processing of Sabatier Methane

机译：含氧化合物对微波等离子体甲烷热解装置中Sabatier甲烷后处理反应产物的影响

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The state-of-the-art Carbon Dioxide Reduction Assembly (CRA) was delivered to the International Space Station (ISS) in April 2010. The system is designed to accept carbon dioxide from the Carbon Dioxide Removal Assembly and hydrogen from the Oxygen Generation Assembly. The two gases are reacted in the CRA in a Sabatier reactor to produce water and methane. Venting of methane results in an oxygen resupply requirement of about 378 lbs per crew member per year. If the oxygen is supplied as water, the total weight for resupply is about 476 lb per crew member per year. For long-term missions beyond low Earth orbit, during which resupply capabilities will be further limited, recovery of hydrogen from methane is highly desirable. For this purpose, NASA is pursuing development of a Plasma Pyrolysis Assembly (PPA) capable of recovering hydrogen from methane. Under certain conditions, water vapor and carbon dioxide (nominally intended to be separated from the CRA outlet stream) may be present in the PPA feed stream. Thus, testing was conducted in 2010 to determine the effect of these "oxygenated" compounds on PPA performance, particularly the effect of inlet carbon dioxide and water variations on the PPA product stream. This paper discusses the test set-up, analysis, and results of this testing.
机译：最新的二氧化碳减排装置（CRA）于2010年4月交付给国际空间站（ISS）。该系统旨在接收来自二氧化碳去除装置的二氧化碳和来自氧气产生装置的氢气。两种气体在Sabatier反应器中的CRA中反应生成水和甲烷。甲烷排放导致每位机组成员每年需补充氧气约378磅。如果以水的形式提供氧气，则每名机组人员每年的补给总重量约为476磅。对于在低地球轨道之外的长期任务，在此期间补给能力将进一步受到限制，非常需要从甲烷中回收氢。为此，美国国家航空航天局（NASA）正在寻求开发一种能够从甲烷中回收氢的等离子体热解组件（PPA）。在某些条件下，PPA进料流中可能存在水蒸气和二氧化碳（通常打算与CRA出口流分离）。因此，在2010年进行了测试，以确定这些“氧化的”化合物对PPA性能的影响，特别是入口二氧化碳和水分变化对PPA产品物流的影响。本文讨论了测试设置，分析和测试结果。

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