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采用固定床流动反应装置，考察了３种不同氧化气氛下甲烷催化氧化制合成气的反应性能。在空速为５×１０５ｈ－１、ＣＨ４／Ｏ２＝２．０、外控温度为８００℃时，富氧空气（３４．５％Ｏ２＋６５．５％Ｎ２）具有和１００％Ｏ２气氛基本接近的反应性能，而且用空气或富氧空气取代纯氧明显减轻了催化剂床层的“热点”现象。针对富氧空气（３４．５％Ｏ２＋６５．５％Ｎ２），考察了空速对反应性能的影响。结果表明，空速在３×１０５～８×１０５ｈ－１范围内ＣＨ４转化率＞９０％，ＣＯ选择性＞９０％，Ｈ２选择性接近１００％；合成气中（Ｈ２＋ＣＯ）／Ｎ２比值接近３．０，ＣＯ经水蒸汽变换后得Ｈ２／Ｎ２比值接近３．０，基本满足合成氨的要求
A fixed-bed flow reactor was used to study the catalytic performance of methane oxidation to syngas under three different oxidizing atmospheres. Oxygen-enriched air (34.5% O2 + 65.5% N2) has nearly the same reaction as 100% O2 at a space velocity of 5 × 105 h-1, CH4 / O2 = 2.0 and an external control temperature of 800 ℃ Performance, and the replacement of pure oxygen with air or oxygen-enriched air significantly reduces the “hot spot” of the catalyst bed. For oxygen-enriched air (34.5% O2 + 65.5% N2), the effect of space velocity on the reaction performance was investigated. The results showed that the CH4 conversion was> 90%, the CO selectivity was> 90%, the H2 selectivity was close to 100%, and the ratio of H2 + CO / N2 was close to 3 in the range of 3 × 105 ~ 8 × 105h-1. 0, CO ratio of H2 / N2 after steam reforming is close to 3.0, basically meeting the requirements of synthetic ammonia