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| PETG共聚酯混醇精馏分离回收 | |
| 引用本文： | 石鸣彦,翟国栋,胡冬滢.PETG共聚酯混醇精馏分离回收[J].精细化工中间体,2010,40(1):58-60. |
| 作者姓名： | 石鸣彦 翟国栋 胡冬滢 |
| 作者单位： | 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-0.0995～-0.1MPa,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 |
Recovery of the Mixed Alcohols in PETG Copolyester Preparation |
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| SHI Ming-yan,ZHAI Guo-dong,HU Dong-yin.Recovery of the Mixed Alcohols in PETG Copolyester Preparation[J].Fine Chemical Intermediates,2010,40(1):58-60. | |
| Authors: | SHI Ming-yan ZHAI Guo-dong HU Dong-yin |
| Affiliation: | 1. Research Institute of Liaoyang Petrochemical Company, Petrochina, Liaoyang 111003, China; 2. Nitric Acid Plant of Liaoyang Petrochemical Company, Petroehina, 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℃. |
| Keywords: | ethylene glycol 1 4-cyclohexanedimethanol vacuum distillation |
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