| 亚磷酸二甲酯尾气的分离回收工艺 |
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| 引用本文： | 陈晓祥,任不凡,周海杨. 亚磷酸二甲酯尾气的分离回收工艺[J]. 现代化工, 2004, 24(3): 51-53 |
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| 作者姓名： | 陈晓祥 任不凡 周海杨 |
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| 作者单位： | 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 |
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| 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%。
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| 关 键 词： | 亚磷酸二甲酯 氯化氢 氯甲烷 |
| 文章编号： | 0253-4320(2004)03-0051-03 |
| 修稿时间： | 2003-11-24 |
A separation and recovery process of tail gases in producing dimethyl phosphite |
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| CHEN Xiao-xiang,REN Bu-fan,ZHOU Hai-yang. A separation and recovery process of tail gases in producing dimethyl phosphite[J]. Modern Chemical Industry, 2004, 24(3): 51-53 |
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| Authors: | CHEN Xiao-xiang REN Bu-fan ZHOU Hai-yang |
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| Affiliation: | CHEN Xiao-xiang~1,REN Bu-fan~2,ZHOU Hai-yang~2 |
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| Abstract: | 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. |
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| Keywords: | dimethyl phosphite hydrogen chloride methyl chloride |
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