乙腈法抽提丁二烯装置改扩建工艺设计

董满祥　 贾自成　

摘　要：通过增加丁二烯生产装置中第一、第二萃取精馏塔塔板数，使得成品丁二烯纯度由改造前的99.0％提高到99.5％以上，炔烃质量分数由140×10-6降低到25×10-6以下，抽余碳四中丁二烯质量分数由0.3％～0.8％降低到0.004％以下。装置改造后产品质量提高，收率增加。
关键词：丁二烯抽提；乙腈法；技术改造；工艺设计；产品质量
分类号：TQ053.5　文献标识码：B
文章编号：1000-1255(2001)02-0075-03

Process design of expanded butadiene extraction plant with acetonitrile method

Dong Manxiang（Design Institute of Lanzhou Chemical Industry Corporation， Lanzhou 730060， China）　
Jia Zicheng（Design Institute of Lanzhou Chemical Industry Corporation， Lanzhou 730060， China）　

Abstract：By increasing the column trays in the first and second of extractive rectification column， the purity of butadiene increased from 99.0％ to 99.5％ ,the content of alkynes decreased from 140× 10- 6 to 25× 10- 6, the content of butadiene in the C4 raffinate decreased from 0.8％ to 40× 10- 6. After the technical remoulding,the quality of the product improved and the yield increased.
Keywords：butadiene extraction； acetonitrile method； technical remoulding； process design； product quality