| Minimum Amount of Slop Cut in Batch Distillation |
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| 作者姓名： | 李汝贤 张卫江 张志刚 |
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| 作者单位： | School of Chemical Engineering and Technology Tianjin University Tianjin 300072，China，School of Chemical Engineering and Technology Tianjin University，Tianjin 300072，China，School of Chemical Engineering and Technology Tianjin University，Tianjin 300072，China |
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| 摘 要： | The pulse-control operation technique which alternates between total reflux operation and total efflux operation in batch distillation was studied along with the minimum amount of slop cut. Total reflux time was confirmed by dynamic simulation, and total efflux time was adopted by statistic method. For the mixture of hexane and cyclohexane and the traditional constant reflux ratio operation strategy, the amount of slop cut is 1.8-2.1 times of the minimum amount of slop cut; whereas for the pulse-control operation strategy, it is 1.2-1.4 times of the minimum amount of slop cut. So compared with the traditional constant reflux ratio operation, the pulse-control operation can decrease the amount of slop cut and operation time, and meanwhile, enhance separation efficiency and yield.
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| 关 键 词： | 不合格馏分 分批蒸馏 脉冲控制 回流时间 |
| 收稿时间： | 2005-06-24 |
Minimum Amount of Slop Cut in Batch Distillation |
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| LI Ruxian,ZHANG Weijiang,ZHANG Zhigang.Minimum Amount of Slop Cut in Batch Distillation[J].Transactions of Tianjin University,2006,12(2):109-111. |
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| Authors: | LI Ruxian ZHANG Weijiang ZHANG Zhigang |
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| Abstract: | The pulse-control operation technique which alternates between total reflux operation and total efflux operation in batch distillation was studied along with the minimum amount of slop cut. Total reflux time was confirmed by dynamic simulation, and total efflux time was adopted by statistic method. For the mixture of hexane and cyclohexane and the traditional constant reflux ratio operation strategy, the amount of slop cut is 1.8-2.1 times of the minimum amount of slop cut; whereas for the pulse-control operation strategy, it is 1.2-1.4 times of the minimum amount of slop cut. So compared with the traditional constant reflux ratio operation, the pulse-control operation can decrease the amount of slop cut and operation time, and meanwhile, enhance separation efficiency and yield. |
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| Keywords: | minimum amount of slop cut batch distillation slop cut pulse-control |
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