Distillation with nanoporous or coated hollow fibers

Bin Chung Jae; Jonathan P. DeRocher; E. L. Cussler

doi:10.1016/j.memsci.2004.02.042

Distillation with nanoporous or coated hollow fibers

Bin Chung Jae, Jonathan P. DeRocher, E. L. Cussler

Chemical Engineering and Materials Science

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

38 Scopus citations

Abstract

Distillation of methanol-ethanol solutions in a small column containing hollow fibers is independent of whether the fibers are nanoporous or covered with a thin, highly permeable coating. The hollow fibers do not provide selectivity but serve as a form of structured packing, so that the fluid mechanics in the column is not constrained by loading and flooding. The overall mass transfer coefficient based on a vapor side driving force and measured across the fibers is around 0.03 cm/s, the result of roughly equal mass transfer resistances in the condensate, the membrane, and the vapor. Further improvements in this form of distillation will require significant changes in module design, which reduce each of these three resistances.

Original language	English (US)
Pages (from-to)	3-10
Number of pages	8
Journal	Journal of Membrane Science
Volume	257
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2004.02.042
State	Published - Jul 15 2005

Bibliographical note

Funding Information:
This work was principally supported by the Petroleum Research Fund (grant 3653908328-AC9) and by the Department of Energy (grants CRADA LA01C10455 and FG07-02ER63509). Other support came from the US Air Force Office of Scientific Research (F49620-01-1-0333) and from the National Science Foundation (CTS 0322882). J.B.C. had a traveling fellowship from Postech, Pohang University of Science and Technology, South Korea.

Keywords

Fiber membranes
Microporous and porous membranes
Modules
Organic separations

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title = "Distillation with nanoporous or coated hollow fibers",

abstract = "Distillation of methanol-ethanol solutions in a small column containing hollow fibers is independent of whether the fibers are nanoporous or covered with a thin, highly permeable coating. The hollow fibers do not provide selectivity but serve as a form of structured packing, so that the fluid mechanics in the column is not constrained by loading and flooding. The overall mass transfer coefficient based on a vapor side driving force and measured across the fibers is around 0.03 cm/s, the result of roughly equal mass transfer resistances in the condensate, the membrane, and the vapor. Further improvements in this form of distillation will require significant changes in module design, which reduce each of these three resistances.",

keywords = "Fiber membranes, Microporous and porous membranes, Modules, Organic separations",

author = "Jae, {Bin Chung} and DeRocher, {Jonathan P.} and Cussler, {E. L.}",

note = "Funding Information: This work was principally supported by the Petroleum Research Fund (grant 3653908328-AC9) and by the Department of Energy (grants CRADA LA01C10455 and FG07-02ER63509). Other support came from the US Air Force Office of Scientific Research (F49620-01-1-0333) and from the National Science Foundation (CTS 0322882). J.B.C. had a traveling fellowship from Postech, Pohang University of Science and Technology, South Korea. ",

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AU - Jae, Bin Chung

AU - DeRocher, Jonathan P.

AU - Cussler, E. L.

N1 - Funding Information: This work was principally supported by the Petroleum Research Fund (grant 3653908328-AC9) and by the Department of Energy (grants CRADA LA01C10455 and FG07-02ER63509). Other support came from the US Air Force Office of Scientific Research (F49620-01-1-0333) and from the National Science Foundation (CTS 0322882). J.B.C. had a traveling fellowship from Postech, Pohang University of Science and Technology, South Korea.

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N2 - Distillation of methanol-ethanol solutions in a small column containing hollow fibers is independent of whether the fibers are nanoporous or covered with a thin, highly permeable coating. The hollow fibers do not provide selectivity but serve as a form of structured packing, so that the fluid mechanics in the column is not constrained by loading and flooding. The overall mass transfer coefficient based on a vapor side driving force and measured across the fibers is around 0.03 cm/s, the result of roughly equal mass transfer resistances in the condensate, the membrane, and the vapor. Further improvements in this form of distillation will require significant changes in module design, which reduce each of these three resistances.

AB - Distillation of methanol-ethanol solutions in a small column containing hollow fibers is independent of whether the fibers are nanoporous or covered with a thin, highly permeable coating. The hollow fibers do not provide selectivity but serve as a form of structured packing, so that the fluid mechanics in the column is not constrained by loading and flooding. The overall mass transfer coefficient based on a vapor side driving force and measured across the fibers is around 0.03 cm/s, the result of roughly equal mass transfer resistances in the condensate, the membrane, and the vapor. Further improvements in this form of distillation will require significant changes in module design, which reduce each of these three resistances.

KW - Fiber membranes

KW - Microporous and porous membranes

KW - Modules

KW - Organic separations

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Distillation with nanoporous or coated hollow fibers

Abstract

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Keywords

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