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[1]杨雷,艾胜兰,汤吉海,等.二氯乙烷萃取分离二氯丙醇盐酸水溶液[J].南京工业大学学报(自然科学版),2014,36(03):77-81.[doi:10.3969/j.issn.1671-7627.2014.03.015]
 YANG Lei,AI Shenglan,TANG Jihai,et al.Extraction separation of dichloropropanol-hydrochloric acid solution with dichloroethane[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(03):77-81.[doi:10.3969/j.issn.1671-7627.2014.03.015]
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二氯乙烷萃取分离二氯丙醇盐酸水溶液()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年03期
页码:
77-81
栏目:
出版日期:
2014-05-20

文章信息/Info

Title:
Extraction separation of dichloropropanol-hydrochloric acid solution with dichloroethane
文章编号:
1671-7627(2014)03-0077-05
作者:
杨雷艾胜兰汤吉海陈献费兆阳崔咪芬乔旭
南京工业大学 化学化工学院 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
YANG LeiAI ShenglanTANG JihaiCHEN XianFEI ZhaoyangCUI MifenQIAO Xu
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
二氯丙醇 盐酸水溶液 萃取 二氯乙烷
Keywords:
dichloropropanol hydrochloric acid solution extraction dichloroethane
分类号:
TQ028.3
DOI:
10.3969/j.issn.1671-7627.2014.03.015
文献标志码:
A
摘要:
采用溶剂萃取法从甘油氢氯化反应液中分离二氯丙醇,筛选萃取剂,并对以二氯乙烷为萃取剂的工艺进行优化。结果表明:以正辛醇为萃取剂,从二氯丙醇盐酸水溶液中萃取二氯丙醇的单级收率达到94.0%以上,但是HCl也同时全部进入萃取相; 通过采用碱性有机化合物三辛胺与正辛醇复配使用,在不降低二氯丙醇收率的同时,可以减少HCl进入萃取相。氯苯和环己烷对二氯丙醇基本没有萃取效果。以二氯乙烷为萃取剂,虽然单级萃取收率比正辛醇低,但是萃取次数增加到7次,在萃取温度40 ℃、萃取搅拌时间60 min、二氯乙烷用量为二氯丙醇盐酸水溶液质量的1.5倍的最佳条件下,二氯丙醇的萃取收率达到94.7%,萃余相中HCl萃余率为95.7%。
Abstract:
The dichloropropanol(DCH)was separated by the extraction from aqueous solution of dichloropropanol-hydrochloric acid,which was produced by the chlorination of glycerin.The extraction technology with the dichloroethane as the extraction solvent was optimized.Results showed that using 1-octanol,the DCH yield of single-stage extraction reached 94.0% with all HCl in the extracted phase.The amount of HCl entered by the extracted phase could be reduced by combining basic organic compound, such as the mixture of trioctylamine and 1-octanol,while the yield of DCH would not be decreased.The extraction efficiency of DCH couldn’t be improved with the chlorobenzene or the cyclohexane as the solvent.The yield of one-stage extraction with the dichloroethane as the solvent was not as high as 1-octanol,but the extraction efficiency increased with the increasing of extraction times.The optimal extraction conditions were as follows:the extraction temperature of 40 ℃,the extraction stirring time of 60 min,the mass ratio of dichloroethane to dichloropropanol-hydrochloric acid solution of 1.5:1,and the extraction times was 7.Under those conditions,the yield of DCH could reach 94.7%,while the unextraction efficiency of HCl in extraction raffinate was 95.7%.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-05-19
基金项目:江苏省产学研前瞻性联合研究项目(BY2011105)
作者简介:杨雷(1987—),男,山东菏泽人,硕士,主要研究方向为副产物资源化利用; 乔旭(联系人),教授,E-mail:qct@njtech.edu.cn..
更新日期/Last Update: 2014-05-20