Catalytic hydrogenation to improve ethylene glycol quality

CAO Yuxia; CHEN Qun; ZHOU Jidong; ZHANG Yifeng

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Catalytic hydrogenation to improve ethylene glycol quality

更新时间：2025-12-10

- Catalytic hydrogenation to improve ethylene glycol quality
- CIESC Journal Issue 6, Pages: 1600-1605(2008)
- 作者机构：
  
  1. 江苏工业学院精细石油化工重点实验室
  2. 北京化工研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 June 2008，
  
  Published：05 June 2008
- 稿件说明：
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CAO Yuxia, CHEN Qun, ZHOU Jidong, et al. Catalytic hydrogenation to improve ethylene glycol quality[J]. CIESC Journal, 2008, (6): 1600-1605.
DOI：

CAO Yuxia, CHEN Qun, ZHOU Jidong, et al. Catalytic hydrogenation to improve ethylene glycol quality[J]. CIESC Journal, 2008, (6): 1600-1605. DOI：

摘要

对对催化加氢法提高乙二醇质量进行了研究，考察了反应温度、压力和乙二醇空速对乙二醇紫外透过率和杂质去除率的影响。结果表明，在反应温度353 K、乙二醇液时空速 30 h-1、压力0.25 MPa、氢气质量空速0.02 g·ml-1·h-1条件下，催化剂连续运行90 d，乙二醇含水料在220、275、350 nm的UV值由原来的49.6％、88.2％、97.7％平均提高到73.8％、93.2％、99.7％，精馏后乙二醇成品的紫外透过率平均提高到84.2％、95.1％、99.9％，杂质去除率提高到75.5％、60％、95.8％，成品的醛含量由原来的11.5 μg·g-1下降到3.7 μg·g-1。

Abstract

The method of catalytic hydrogenation was used to improve production of ethylene glycol (EG) over Raney nickel catalyst.Under the reaction condition of temperature 353 K

EG liquid hourly space velocity 30 h-1

H2 pressure 0.25 MPa

H2 mass space velocity 0.02 g·ml-1·h-1 and hydrogenation time 90 d

ultraviolet light transmittance of EG with water content at 220 nm

275 nm and 350 nm were improved averagely from 49.6%

88.2%

97.7% to 73.8%

93.2%

99.7% respectively

and further to 84.2%

95.1%

99.9% after rectification.The removal efficiency of impurities was up to 75.5%

60% and 95.8%.The amount of aldehyde was reduced from 11.5 μg·g-1 to 3.7 μg·g-1.

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