文献类型：期刊文献

中文题名：溶剂萃取法回收稀羧酸

英文题名：Recovery of Carboxylic Acids from Dilute Aqueous Solution by Solvent Extraction

作者：田恒水[1];朱宏杰[1];霍文军[1];苏元复[1]

机构：[1]华东化工学院化学工程系,上海200273

年份：1992

卷号：21

期号：12

起止页码：819

中文期刊名：石油化工

外文期刊名：Petrochemical Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：溶剂;萃取;羧酸;回收

摘要：研究了叔胺N235从稀水溶液中萃取低分子量羧酸的行为和性质,考察了稀释剂、溶剂组成、温度等因素的影响,测定了液液平衡数据,得到了萃取等温线与McCabe-Thiele图,对初始浓度为0.5mol/1的稀羧酸,用20(v)%N235-1,1,2-三氯乙烷为溶剂,在298K,相比E/R=1时,经三级逆流萃取,其萃取率分别为:甲酸>99.5%,乙酸>90.0%,丙酸>99.8%。研究了萃取过程的机理,得到萃合比为1及其萃合物结构式。
The extraction and recovery of formic, acetic and propionic acid from dilute aqueous solution by Alamine N235 have been investigated and the results of bench studies summarized for the effect of dilution, composition of the solvent, and temperature of the extraction. The experimental results show that the proper composition of the solvent is 20(v)% Alamine N235-80(v)% 1,1, 2-trichloroethane. The extraction isotherms as well as McCabe-Thiele diagrams have been presented. The three-stage direct recovery of formic, acetic and propionic acid are higher than 99.5%, 99.0% and 99.8% respectively. A preliminary discussion of the extraction mechanism is also outlined.