环氧丙烷生产废液中1,2-二氯丙烷的回收  

Recovery of 1,2-Dichloropropane from Waste Liquor in Propylene Oxide Production

作　　者：彭海珠[1] 莫馗[1] 卢姝[1] 李安定[1] 陈石登[1] 

机构地区：[1]中国石油化工股份有限公司北京化工研究院环保所,北京100013

出　　处：《化工环保》2006年第1期45-47,共3页Environmental Protection of Chemical Industry

基　　金：中国石油化工股份有限公司科技开发项目(SJ301018)。

摘　　要：介绍了从环氧丙烷生产废液中回收1,2-二氯丙烷的新方法。采用常压精馏、减压精馏、共沸精馏工艺分离环氧丙烷生产废液中的1,2-二氯丙烷。实验结果显示,共沸精馏工艺的效果最好;在含有一定量的共沸剂、釜温100℃、顶温86℃、回流比为1的条件下,塔顶馏分中1,2-二氯丙烷的质量分数可达到98%以上,1,2-二氯丙烷的回收率可达到97%以上。A new method for recovering 1,2-dichloropropane from waste liquor in propylene oxide production was developed. Atmospheric distillation, vacuum distillation and azeotropic distillation processes were used to separate 1,2-dichloropropane from the waste liquor. The experimental results indicated that the effect of azeotropic distillation process is the best. Under the conditions of a certain dosage of azeotrope former,column bottom temperature 100 ℃, overhead temperature 86 ℃ and reflux ratio 1, the mass fraction of 1,2-dichloropropane in overhead distillate is more than 98%, and the recovery rate of it is over 97%.

关 键 词：环氧丙烷 废液 共沸精馏 1 2-二氯丙烷 综合利用 

分 类 号：X783.2[环境科学与工程—环境工程]