第 40 卷第 1 期Vol. 40 No. 1
2010 年 2 月Feb 2010

所属栏目:功能材料

PETG共聚酯混醇精馏分离回收
石鸣彦1,翟国栋2,胡冬滢3 (1.中国石油辽阳石化分公司 研究院,辽宁 辽阳 111003;2.中国石油辽阳石化分公司 硝酸厂,辽宁 辽阳 111003;3.中国石油辽阳石化分公司 烯烃厂,辽宁 辽阳 111003)
摘 要:采用减压精馏的方法对PETG共聚酯混醇进行分离,回收的乙二醇产品纯度大于99%。优化工艺条件为:塔釜温度113~122℃,塔顶温度75~89℃,真空度-0.099 5~-0.1 MPa,回流比1~3 ∶ 1,塔顶冷却水温度20~30℃。
关键词:乙二醇;1,4-环己烷二甲醇;减压精馏
中图分类号:TQ028.3+1  文献标识码:A  文章编号:1009-9212(2009)06- 0058-03
Recovery of the Mixed Alcohols in PETG Copolyester Preparation
SHI Ming-yan1,ZHAI Guo-dong2,HU Dong-ying3 (1. Research Institute of Liaoyang Petrochemical Company,Petrochina,Liaoyang 111003,China;2. Nitric Acid Plant of Liaoyang Petrochemical Company,Petrochina,Liaoyang 111003,China;3. Alkene Plant of Liaoyang Petrochemical Company,Petrochina,Liaoyang 111003,China)
Abstract:The unconverted alcohols in the preparation of PETG copolyester were recoveried and separated by vacuum distillation. The purity of the obtained ethylene glycol was higher than 99%. The optimum conditions for the process were achieved as follows:temperature of tower bottom 113~122℃,temperature of tower top 75~89℃,vacuum degree -0.099 5~-0.1 Mpa,reflux ratio 1~3 ∶ 1,cooling water temperature of tower top 20~30℃.
Key words:ethylene glycol;1,4-cyclohexanedimethanol;vacuum distillation
作者简介:石鸣彦(1974-),女,山东莱州人,工程师,主要从事精细石油化工产品技术研发。(E-mail:shimy@petrochina.com.cn)
收稿日期:2010-02-21