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Industrial application of removing oxygenated contaminants for post-MTBE C4 in liquid state at normal temperature

ZHOU Guanglin,WU Quangui,LI Xiaojie,ZHOU Hongjun   

  1. New Energy Research Institute, China University of Petroleum,Beijing 102249, China
  • Online:2012-10-05 Published:2012-10-05

醚后C4在常温液态下脱含氧化合物技术的工业应用

周广林, 吴全贵,李晓杰,周红军   

  1. 中国石油大学(北京)新能源研究院,北京 102249

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

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