Abstract: This paper describes the principle and process of removing oxygenated contaminants for post-MTBE C4 in the liquid state at normal temperature, and also introduces the industrial application of SQ112 adsorbent and 4A molecular sieve for the purification of post-MTBE C4 in n-butene isomerization to i-butene. Under 0.4～0.8 MPa，single column liquid space velocity 1 h－1，and at normal temperature，dimethyl ether and methanol in post-MTBE C4 could be removed from 50～150 mg/kg to less than 1 mg/kg, and MTBE in post-MTBE C4 could be removed from 50～200 mg/kg to less than 1 mg/kg. After purification, post-MTBE C4 could meet the requirement of isomerization catalysts. SQ112 adsorbent could be regenerated by steam regeneration with stable adsorption capacity and high catalytic activity.

Key words: normal temperature, SQ112 adsorbent, isomerization, application

摘要： 简述了醚后C4在常温液态下脱含氧化合物原理及工艺流程，介绍了在正丁烯异构化生产异丁烯装置中SQ112型脱含氧化合物吸附剂和4A分子筛对醚后C4原料净化过程中的工业应用情况。结果表明，在常温、操作压力为0.4～0.8 MPa、单塔体积液空速为1 h?1条件下，醚后C4脱含氧化合物后二甲醚和甲醇含量可由50～150 mg/kg降到1 mg/kg以下，MTBE含量可由50～200 mg/kg降至小于1 mg/kg ，净化后的醚后C4能满足异构化催化剂的要求。SQ112型吸附剂可以采用水蒸气再生，再生吸附剂吸附容量稳定，脱含氧化合物效果良好。

关键词: 常温, SQ112吸附剂, 异构, 应用