炼油技术与工程 ›› 2021, Vol. 51 ›› Issue (4): 18-21.

• 加工工艺 • 上一篇    下一篇

正丁烷异构反应收率降低原因分析及对策

范海杰, 崔冰冰   

  1. 山东玉皇化工有限公司,山东省菏泽市 274500
  • 收稿日期:2020-09-30 修回日期:2021-02-20 出版日期:2021-04-15 发布日期:2021-07-16
  • 作者简介:范海杰,本科,助理工程师、注册能源管理师,现从事化工生产管理工作。联系电话:15254021354,E-mail:15254021354@163.com。

Cause analysis and countermeasures for yield reduction of n-butane isomerization

Fan Haijie, Cui Bingbing   

  1. Shandong Yuhuang Chemical(Group) Co., Ltd., Heze, Shandong 274500
  • Received:2020-09-30 Revised:2021-02-20 Online:2021-04-15 Published:2021-07-16

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摘要： 针对某炼化企业异构反应系统异丁烷收率下降问题进行分析,发现异构化进料以及循环丁烷中C5及C+5重组分质量分数高于3%、四氯乙烯助剂水质量分数高达45 μg/g、反应器运行负荷高达115%~120%等是其影响因素;通过控制原料重组分含量及降低循环丁烷中C5及C+5组分质量分数低于2.5%,应用高品质四氯乙烯(水质量分数低于15 μg/g),稳定控制反应温度,采取合适加工负荷及运行液时空速4~6 h-1等使异构化产品异丁烷占比稳定控制在60%以上。

关键词: 正丁烷异构化, 反应收率, 重组分, 助剂, 反应温度

Abstract: In view of the yield reduction of isomerization reactors in a refinery and chemical enterprise, it was found that the content of C5 and C+5 in the feedstock and circulating butane increased by more than 3%, the water content of perchlorethylene additive was as high as 45 μg/g, and the load of the reactor was 115%~120%. These were the factors influencing the reduction of reaction yield. The proportion of isobutane in the isomerized products was controlled more than 60% by controlling the content of heavy component in the feedstock, reducing the content of C5 and C+5 in the circulating butane to less than 2.5%, applying high quality perchlorethylene with water content less than 15 μg/g, steadily controlling the reaction temperature, adopting appropriate processing load and liquid hourly space velocity (4~6 h-1).

Key words: n-butane isomerization, reaction yield, heavy component, additive, reaction temperature