[1]ZHOU Cairong,Hao Hongying,Strong Dawn,et al.Isolation and purification of 1,2-cyclohexanediol[J].Journal of Zhengzhou University (Engineering Science),2004,25(03):6-8,13.[doi:10.3969/j.issn.1671-6833.2004.03.002]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
25卷
Number of periods:
2004年03期
Page number:
6-8,13
Column:
Public date:
1900-01-01
- Title:
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Isolation and purification of 1,2-cyclohexanediol
- Author(s):
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ZHOU Cairong; Hao Hongying; Strong Dawn; etc
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- Keywords:
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- CLC:
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- DOI:
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10.3969/j.issn.1671-6833.2004.03.002
- Abstract:
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Batch vacuum rectification was used to separate and purify the heat-sensitive, high boiling point and high freezing point organic matter trans-1,2-cyclohexanediol, and the optimal operating process conditions were optimized by using the method of variable pressure strength and variable reflux ratio. The operating conditions are: hot water with a temperature of about 96 °C is used as the condensing medium at the top of the tower; Full reflux start time: 2 h; Control kettle temperature 180~185°C, segmented constant vacuum 0.086~0.092 MPa; The segmented constant reflux ratio is 5→8→12. The yield of the product obtained under this operating condition is more than 87%, the purity of the product can reach more than 98%, and the color is white.