【摘要】 采用固定床流动反应装置研究了在多组分 Ｎｉ 基催化剂上催化干气选择氧化制氢的反应性能。结果表明：在床层温度８６０ ℃，空速３ ．０ ×１０５ｈ － １ 时，干气中甲烷转化率９６ ．８ ％ ，乙烯、乙烷全部转化、 Ｃ Ｏ 选择性＞ ９０ ％ 。尾气中主要成分 Ｈ２ 占５４ ．０ ％ 、 Ｃ Ｏ 占３４ ．６ ％ ，若 Ｃ Ｏ 通过水蒸汽变换反应转化为 Ｈ２ ，则尾气中的总 Ｈ２ 量可达８８ ％ ，从而大大提高了催化干气的利用价值。更多还原

【Abstract】 The performance of selective oxidation of off gas from catalytic cracking to H 2 has been investigated in a fixed -bed flow reactor over the Ni-based catalyst. The results show that the conversion rate of CH 4 in off gas is 96.8%, C 2H 4 and C 2H 6 are converted completely, the selectivity of CO is higher than 90% at the space velocity of 3.0x10 5h -1 and the bed temperature of 860℃. Under the reaction conditions aforementioned, the content of H 2 and CO in the product gas is 54.0% and 34.6% respectively. If CO is converted to H 2 by the water-shift reaction, the total content of H 2 in product gas can approach 88%, and the using value of off gas from catalytic cracking will be greatly improved.更多还原