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

所屬欄目:功能材料

PETG共聚酯混醇精餾分離回收
石鳴彥1,翟國棟2,胡冬瀅3 (1.中國石油遼陽(yáng)石化分公司 研究院,遼寧 遼陽(yáng) 111003;2.中國石油遼陽(yáng)石化分公司 硝酸廠(chǎng),遼寧 遼陽(yáng) 111003;3.中國石油遼陽(yáng)石化分公司 烯烴廠(chǎng),遼寧 遼陽(yáng) 111003)
摘 要:采用減壓精餾的方法對PETG共聚酯混醇進(jìn)行分離,回收的乙二醇產(chǎn)品純度大于99%。優(yōu)化工藝條件為:塔釜溫度113~122℃,塔頂溫度75~89℃,真空度-0.099 5~-0.1 MPa,回流比1~3 ∶ 1,塔頂冷卻水溫度20~30℃。
關(guān)鍵詞:乙二醇;1,4-環(huán)己烷二甲醇;減壓精餾
中圖分類(lèi)號:TQ028.3+1  文獻標識碼:A  文章編號: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
作者簡(jiǎn)介:石鳴彥(1974-),女,山東萊州人,工程師,主要從事精細石油化工產(chǎn)品技術(shù)研發(fā)。(E-mail:shimy@petrochina.com.cn)
收稿日期:2010-02-21
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