| 萃取精馏分离呋喃酚中邻苯二酚 |
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| 引用本文： | 张建宇,胡艾希,王宇,肖旭辉,郭家斌,罗先福.萃取精馏分离呋喃酚中邻苯二酚[J].中国化学工程学报,2009,17(1):42-46. |
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| 作者姓名： | 张建宇 胡艾希 王宇 肖旭辉 郭家斌 罗先福 |
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| 作者单位： | 1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;2. Hunan Haili Chemical Industry Co., Ltd, Changsha 410007, China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 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.
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| 关 键 词： | carbofuran phenol catechol azeotrope extractive distillation |
| 收稿时间： | 2008-6-5 |
| 修稿时间： | 2008-6-5
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The Separation of Catechol from Carbofuran Phenol by Extractive Distillation |
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| ZHANG Jianyu,HU Aixi,WANG Yu,XIAO Xuhui,GUO Jiabin,LUO Xianfu.The Separation of Catechol from Carbofuran Phenol by Extractive Distillation[J].Chinese Journal of Chemical Engineering,2009,17(1):42-46. |
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| Authors: | ZHANG Jianyu HU Aixi WANG Yu XIAO Xuhui GUO Jiabin LUO Xianfu |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;2. Hunan Haili Chemical Industry Co., Ltd, Changsha 410007, China |
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| 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°C/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. |
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| Keywords: | carbofuran phenol catechol azeotrope extractive distillation |
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