Frontiers of Chemical Science and Engineering >

2009 , Vol. 3 >Issue 4: 443 - 452

DOI: https://doi.org/10.1007/s11705-009-0266-6

Research articles

The energy consumption in a batch stripper and a batch rectifier

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  • State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;

Published date: 05 Dec 2009

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Abstract

The energy consumption in a batch rectifier and a batch stripper was investigated with a shortcut mathematical model. The minimum energy consumption of a batch stripper was compared to that of a batch rectifier under “general constant reflux” and “general constant distillate composition” with the ratio of minimum energy consumption ES/ER. When the feed contains a large amount of light component, the product purity specification is low and the relative volatility is small, the minimum energy consumption of a batch stripper is less than that of a batch rectifier under “general constant reflux” and “general constant distillate composition”. When the feed contains a small amount of light component, the product purity specification is very high and the relative volatility is low, a batch stripper can also consume less energy only in the “general constant distillate composition” operation mode. In other cases, a batch rectifier can consume less energy.

Cite this article

Xianbao CUI, Tianyang FENG, Ying ZHANG, Zhicai YANG, . The energy consumption in a batch stripper and a batch rectifier[J]. Frontiers of Chemical Science and Engineering, 2009 , 3(4) : 443 -452 . DOI: 10.1007/s11705-009-0266-6

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