|Table of Contents|

[1] Pan Xiaomei, Xiao Guomin, Yang Zhicai,. A new combination process of distillation with salt extractionfor separating organic solvent-water azeotropes [J]. Journal of Southeast University (English Edition), 2004, 20 (2): 226-228. [doi:10.3969/j.issn.1003-7985.2004.02.021]
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A new combination process of distillation with salt extractionfor separating organic solvent-water azeotropes()
利用分批精馏和盐效萃取分离有机溶剂-水 共沸物的新工艺
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
20
Issue:
2004 2
Page:
226-228
Research Field:
Chemistry and Chemical Engineering
Publishing date:
2004-06-30

Info

Title:
A new combination process of distillation with salt extractionfor separating organic solvent-water azeotropes
利用分批精馏和盐效萃取分离有机溶剂-水 共沸物的新工艺
Author(s):
Pan Xiaomei1, Xiao Guomin1, Yang Zhicai2
1Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, China
2Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China
潘晓梅1, 肖国民1, 杨志才2
1东南大学化学化工系, 南京 210096; 2天津大学化学工程研究所, 天津 300072
Keywords:
azeotrope;  separation;  bath distillation;  salt extraction
共沸物;  分离;  分批精馏;  盐效萃取
PACS:
TQ026.3
DOI:
10.3969/j.issn.1003-7985.2004.02.021
Abstract:
A novel process which can purify the organic solvents from their azeotropes with water is proposed. In this process, water can be drained off both from bottom and overhead of tower at the same time, and the organic solvent is concentrated in the tower and accumulated in the middle vessel at last. So the progress is time-shortened and energy-saving. The product purity is 99. 8% and the product yield is more than 99. 5%. Simulation of liquid-liquid equilibrium(LLE)and the equipment operation data agree well with the experiment.
建立了一种带有中间储罐的间歇精馏-盐效萃取联合装置. 通过塔顶盐效萃取器和中间罐的作用, 使原料中的水既能从塔顶除去, 又能从塔釜除去. 缩短了操作时间, 节约了塔釜加热量. 单批操作产品的质量浓度达99. 8%以上, 收率达99. 5%. 对盐效萃取器中的液液平衡进行了实验研究和模型关联, 并在此基础上对整个装置进行了数学模拟, 模型计算结果与实验数据吻合良好.

References:

[1] Furter W F. Production of fuel-grade ethanol by extractive distillation [J]. Separation and Purification Methods, 1993, 22(1): 1-21.
[2] Duan Z T. Research on salt extraction distillation[J]. Petrochemical Technology, 1980, 35(6): 350-353.
[3] Furter W F. Salt effect in distillation: a technical review[J]. The Chemical Engineer, 1968, 20(6): 173-177.
[4] Chen C C, Evans L B. A local composition model for excess Gibbs energy of aqueous electrolyte system [J]. American Institute of Chemical Engineering Journal, 1986, 32(3): 444-447.
[5] Pan X M. Study on salt effect and its application[D]. Tianjin: Department of Chemical Engineering, Tianjin University, 2003.(in Chinese)

Memo

Memo:
Biography: Pan Xiaomei(1974—), female, doctor, lecturer, panxiaomei@seu.edu.cn.
Last Update: 2004-06-20