摘要
制氨厂尾气含有大量CO ,若采用有效的分离、纯化工艺 ,可获得碳一化工 (C1 )所需的高纯度CO .本文研究了用PU1型吸附剂变压吸附提纯制氨厂尾气 ,同时比较了PU1型吸附剂和ZMS 5A型沸石的性能 .试验采用一段法变压吸附工艺研究了不同操作条件下CO的纯化和回收 ,气体流速为 0 2～ 0 8m3 /h ,并对工艺条件进行了优化 .结果表明PU1吸附性能较好 ,在吸附压力 0 3MPa、原料气CO浓度 30 %时 ,CO回收率为 75 % ,CO产品气的纯度可大于 98% .
Ammonia plant tail gas is an important CO source for C1 chemistry if an efficient separation/purification technology is available. Presented is pressure swing adsorption using a home made catalyst PU1 for recovery of CO from ammonia plant tail gas. A performance comparison of PU1 with a commercial zeolite was also presented. The pilot plant experiments were carried out in an intermission one bed PSA unit with ammonia plant tail gas and a feed flow rate of 0 2～0 8 m 3/h. The purity and recovery of CO was studied under various operating conditions. The operating conditions for the process were optimized and an optimum cyclic sequence of operation steps was proposed. A good performance of PU1 in the process was experimentally demonstrated. Product gas with a CO purity over 98% could be produced at a CO recovery of 75% for a feed gas CO concentration of 30% and gas pressure of 0.3 MPa.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2004年第5期31-36,共6页
Environmental Science
关键词
制氨厂尾气
一氧化碳
提纯
变压吸附
ammonia plant tail gas
carbon monoxide
purification
pressure swing adsorption
