文献类型：期刊文献

中文题名：溶剂萃取法回收稀醋酸

作者：田恒水;霍文军;苏元复

机构：[1]华东化工学院化学工程系;[2]华东化工学院化学工程研究所;

年份：1991

卷号：0

期号：2

起止页码：123

中文期刊名：华东化工学院学报

收录：国家哲学社会科学学术期刊数据库

语种：中文

中文关键词：醋酸;萃取;分离;乙二醛;甲基丙烯酸;溶剂萃取

外文关键词：acetic acid; glyoxal; methacrylic acid; recovery; extraction; separation; treating waste water; solvent extraction

摘要：研究了三烷基(C7～9)胺(N235)、磷酸三丁酯（TBP）及其混合溶剂在稀溶液中萃取醋酸及醋酸与硝酸、甲基丙烯酸的行为和性质,测定并关联了液液平衡数据。从醋酸水溶液和乙二醛氧化液中回收与除去醋酸用N235-TBP混合溶剂较好,处理甲基丙烯酸的废水溶液用TBP较好。分离的最佳工艺条件为:溶剂配比,20%（v）N235-80%（v）TBP;温度,298K;平衡时间约30s;相比为1;四级逆流萃取。溶剂用真空精馏法回收。研究了TBP萃取醋酸的机理,得到萃合比为1及萃合物结构式。
Methods to recover acetic acid from diluent aqueous solution, glyoxal and waste water of producing methacrylic acid have been developed. A new process to extract HAc is to use a mixed solvent consisting of tertiary amine and tributyl phosphate. Various factors such as composition of the mixed solvents, concentrations of HAc, (HAc + HNO_3) and (HAc + MAA), contact time, and temperature were studied.The data of liquid-liquid equilibrium have been measured and related. A preliminary discussion of the extractive mechanism is also outlined.