文献类型：期刊文献

中文题名：亚磷酸二甲酯尾气的分离回收工艺

英文题名：A separation and recovery process of tail gases in producing dimethyl phosphite

作者：陈晓祥[1];任不凡[2];周海杨[2]

机构：[1]华东理工大学化学工程系,上海200237;[2]浙江新安化工集团股份有限公司,浙江建德311600

年份：2004

卷号：24

期号：3

起止页码：51

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：亚磷酸二甲酯;氯化氢;氯甲烷

外文关键词：dimethyl phosphite;hydrogen chloride;methyl chloride

摘要：介绍了亚磷酸二甲酯生产中尾气回收的工艺原理,对尾气中氯化氢及氯甲烷的分离回收过程进行了分析;提出了采用吸收剂分段循环和降温相结合的回收工艺,将此工艺应用于3万t/a的亚磷酸二甲酯生产装置的尾气回收上,可使氯化氢的回收率达99.9%,氯甲烷的回收率达93%以上,盐酸质量分数大于30%,尾气中氯甲烷的质量分数小于5%。
Separation and recovery process principles of tail gases in producing dimethyl phosphite were introduced;Separation and recovery courses of hydrogen chloride and methyl chloride in tail gases were also analyzed.The percent recovery for hydrogen chloride and methyl chloride is over 99.9% and 93%,respectively,by using the process of combining stage recycle of solvent with lower temperature.Mass fraction of hydrochloric acid is over 30% and mass fraction of methyl chloride in tail gases is less than 5% on a pilot scale of 30 000 t/a of dimethyl phosphite.