提高小本体聚丙烯装置尾气丙烯回收率的方法  

Recycle More Propylene from Batch Bulk PP Tail Gas

作　　者：尹青桂 

机构地区：[1]中国石化巴陵分公司合成橡胶事业部,湖南岳阳414014

出　　处：《石油石化绿色低碳》2016年第5期31-33,共3页Green Petroleum & Petrochemicals

摘　　要：通过对6万t/a小本体聚丙烯装置尾气丙烯放空情况进行分析,推导出了尾气丙烯回收率的计算公式,探讨了提高聚丙烯装置尾气丙烯回收率的主要环节,并提出改进、优化措施。采取减少尾气丙烯直接放空、降低系统氮气含量、优化运行膜回收系统等改造措施后,聚丙烯装置全年尾气丙烯回收率由原来的97%提高到99%以上,全年可减排丙烯100 t以上。The recovery rate equation of recycling propylene from the PP tail gas was derived by analyzing the discharged propylene from the 60 kt/a batch bulk PP plant tail gas. The main procedures of improving the propylene recovery were discussed and optimized. The annual recovery rate of the propylene was enhanced from 97% to above99% by reducing the discharged propylene and the nitrogen content in the system, and optimizing membrane recovery operation. Consequently, the discharged propylene has decreased by 100 t per year.

关 键 词：聚丙烯装置 尾气 丙烯回收率 氮气 优化措施 

分 类 号：TQ221.212[化学工程—有机化工] X783[环境科学与工程—环境工程]