SCI和EI收录∣中国化工学会会刊

›› 2009, Vol. 17 ›› Issue (1): 42-46.

• • 上一篇    下一篇

The Separation of Catechol from Carbofuran Phenol by Extractive Distillation

张建宇1,2, 胡艾希1, 王宇1,2, 肖旭辉2, 郭家斌1, 罗先福1   

  1. 1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;
    2. Hunan Haili Chemical Industry Co., Ltd, Changsha 410007, China
  • 收稿日期:2008-06-05 修回日期:2008-08-26 出版日期:2009-01-28 发布日期:2009-01-28
  • 通讯作者: HU Aixi, E-mail: axhu0731@yahoo.com.cn
  • 基金资助:
    Supported by the National High Technology Research and Development Program of China(2006AA03Z460)

The Separation of Catechol from Carbofuran Phenol by Extractive Distillation

ZHANG Jianyu1,2, HU Aixi1, WANG Yu1,2, XIAO Xuhui2, GUO Jiabin1, LUO Xianfu1   

  1. 1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;
    2. Hunan Haili Chemical Industry Co., Ltd, Changsha 410007, China
  • Received:2008-06-05 Revised:2008-08-26 Online:2009-01-28 Published:2009-01-28
  • Supported by:
    Supported by the National High Technology Research and Development Program of China(2006AA03Z460)

摘要: In this study,extractive distillation has been applied to separate catechol(CAT) from carbofuran phenol(CFP) with high purity and yield.The relative volatility of CFP to CAT was measured,and the choice of separating agents was investigated.The experimental results indicated that CFP/CAT is an azeotropic system with an azeotropic point at 93.40℃/0.400 kPa and an azeotropic mixture containing 49.96% of CFP and 50.04% of CAT.Data from the determination of the relative volatility have shown that separating agents such as diglycol and 4-butylcatechol(4-TBC) are able to increase the relative volatility up to 1.90.In one shot process batch extractive distillation of CFP mixture with 3%(by mass) diglycol as separating agent,the purity and yield of the obtained CFP was 99.0% and 95.0%,respectively,while the distillation without separating agent provided a purity and yield of only 98.0% and 90.0%,respectively.There was no residual separating agent found in the product.

关键词: carbofuran phenol, catechol, azeotrope, extractive distillation

Abstract: In this study, extractive distillation has been applied to separate catechol(CAT) from carbofuran phenol(CFP) with high purity and yield.The relative volatility of CFP to CAT was measured, and the choice of separating agents was investigated.The experimental results indicated that CFP/CAT is an azeotropic system with an azeotropic point at 93.40℃/0.400 kPa and an azeotropic mixture containing 49.96% of CFP and 50.04% of CAT.Data from the determination of the relative volatility have shown that separating agents such as diglycol and 4-butylcatechol(4-TBC) are able to increase the relative volatility up to 1.90.In one shot process batch extractive distillation of CFP mixture with 3%(by mass) diglycol as separating agent, the purity and yield of the obtained CFP was 99.0% and 95.0%, respectively, while the distillation without separating agent provided a purity and yield of only 98.0% and 90.0%, respectively.There was no residual separating agent found in the product.

Key words: carbofuran phenol, catechol, azeotrope, extractive distillation