Solvent distillation by ceramic hollow fibre membrane contactors

Sirichai Koonaphapdeelert; Xiaoyao Tan; Zhentao Wu; K. Li

doi:10.1016/j.memsci.2008.01.022

Solvent distillation by ceramic hollow fibre membrane contactors

Sirichai Koonaphapdeelert, Xiaoyao Tan, Zhentao Wu, K. Li^*

^*Corresponding author for this work

Chemical Engineering & Applied Chemistry

Imperial College London

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Ceramic hollow fibre membrane contactors are employed for the distillation of benzene and toluene at 93-97 °C to demonstrate their chemical and thermal stability in the condition, which polymeric membranes cannot tolerate. The results show that the membrane contactors can be operated over the flooding limit of conventional packed columns because the vapour and liquid phases are separated from each other. The HTU value of the membrane contactor is as low as 9 cm, indicating excellent separation efficiency, which is resulted from its large surface area per volume. It is promising that the membrane contactors can achieve high separation efficiency along with high column capacity. The overall mass transfer coefficients (K_G) were in a range of 0.11-0.50 cm/s and are found to be dependent on the fluid velocity.

Original language	English
Pages (from-to)	58-66
Number of pages	9
Journal	Journal of Membrane Science
Volume	314
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2008.01.022
Publication status	Published - 30 Apr 2008

Funding

The authors gratefully acknowledge the research funding provided by EPSRC in the United Kingdom (grant no. EP/E000231).

Keywords

Benzene-toluene system
Ceramic hollow fibres
Distillation
Mass transfer coefficients

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10.1016/j.memsci.2008.01.022

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title = "Solvent distillation by ceramic hollow fibre membrane contactors",

abstract = "Ceramic hollow fibre membrane contactors are employed for the distillation of benzene and toluene at 93-97 °C to demonstrate their chemical and thermal stability in the condition, which polymeric membranes cannot tolerate. The results show that the membrane contactors can be operated over the flooding limit of conventional packed columns because the vapour and liquid phases are separated from each other. The HTU value of the membrane contactor is as low as 9 cm, indicating excellent separation efficiency, which is resulted from its large surface area per volume. It is promising that the membrane contactors can achieve high separation efficiency along with high column capacity. The overall mass transfer coefficients (KG) were in a range of 0.11-0.50 cm/s and are found to be dependent on the fluid velocity.",

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author = "Sirichai Koonaphapdeelert and Xiaoyao Tan and Zhentao Wu and K. Li",

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AU - Koonaphapdeelert, Sirichai

AU - Tan, Xiaoyao

AU - Wu, Zhentao

AU - Li, K.

PY - 2008/4/30

Y1 - 2008/4/30

N2 - Ceramic hollow fibre membrane contactors are employed for the distillation of benzene and toluene at 93-97 °C to demonstrate their chemical and thermal stability in the condition, which polymeric membranes cannot tolerate. The results show that the membrane contactors can be operated over the flooding limit of conventional packed columns because the vapour and liquid phases are separated from each other. The HTU value of the membrane contactor is as low as 9 cm, indicating excellent separation efficiency, which is resulted from its large surface area per volume. It is promising that the membrane contactors can achieve high separation efficiency along with high column capacity. The overall mass transfer coefficients (KG) were in a range of 0.11-0.50 cm/s and are found to be dependent on the fluid velocity.

AB - Ceramic hollow fibre membrane contactors are employed for the distillation of benzene and toluene at 93-97 °C to demonstrate their chemical and thermal stability in the condition, which polymeric membranes cannot tolerate. The results show that the membrane contactors can be operated over the flooding limit of conventional packed columns because the vapour and liquid phases are separated from each other. The HTU value of the membrane contactor is as low as 9 cm, indicating excellent separation efficiency, which is resulted from its large surface area per volume. It is promising that the membrane contactors can achieve high separation efficiency along with high column capacity. The overall mass transfer coefficients (KG) were in a range of 0.11-0.50 cm/s and are found to be dependent on the fluid velocity.

KW - Benzene-toluene system

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KW - Distillation

KW - Mass transfer coefficients

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Solvent distillation by ceramic hollow fibre membrane contactors

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