Abstract
The pressure drop mainly due to viscous friction inside hollow fibers is taken into consideration by nondimensionalization and numerical simulation of governing equations. For pure gas, the permeation pressure and velocity of actual situations with a viscous fluid deviate significantly from those of the corresponding inviscid or no-pressure-drop cases. The apparent permeability estimated from the relation of permeate flow rate and pressure difference is considerably underestimated in actual situations, and more severely for the region of small pressure difference and large module length. Numerical simulation shows that the estimated permeability behaves as if it were an increasing function of pressure difference for a constant permeability and roughly a constant for a dual-sorption-type permeability, respectively. For binary-mixture permeation the cut ratio and purity of permeate stream are mainly governed by two dimensionless parameters standing for pressure drop and permeability, respectively. The cut ratio and corresponding product composition are predictable without the rigorous simulation of the governing equations.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Antonson, C.R., Gardner, R.J., King, C.F. and Ko, D.Y., “Analysis of Gas Separation by Permeation in Hollow Fibers”,Ind. Eng. Chem. Process Des. Dev.,16, 463 (1977).
Barrer, R. M., Barrie, J. A. and Slater, J., “Sorption and Diffusion in Ethyl Cellulose and Rubber”,J. Polym. Sci.,27, 177 (1958).
Chern, R.T., Koros, W.J. and Fedkiw, P.S., “Simulation of a Hollow-fiber Gas Separator: The Effects of Process and Design Variables”,Ind. Eng. Chem. Process Des. Dev.,24, 1015 (1985).
Hwang, S.-T. and Kammermeyer, K., “Membranes in Separations”, Robert E. Krieger Publishing Company, Malabar, 1984.
Kim, H.-J. and Hong, S.-I., “The Sorption and Permeation of CO2 and CH4 for Dimethylated Polysulfone Membrane”,Korean J. Chem. Eng.,3, 14 (1997).
Kim, J.-S., Ahn, J.-S. and Lee, S.-M., “Separation Characteristics of CH4-CO2 Gas Mixture through Hollow Fiber Membrane Module”,Membrane J. (Korean),4, 197 (1994).
Kim, Y.-H. and Lee, E.-K., “Comparison of Axial and Radial Flow Chromatography on Protein Separation Speed and Resolution”,Korean J. Chem. Eng.,5, 13 (1996).
Koros, W. J. and Paul, D. R., “Transient and Steady State Permeation in Poly(ethylene terephthalate) above and below Glass Transition”,J. Polym. Sci. Phys. Ed.,16, 2171 (1978).
Sanders, E.S. and Koros, W.J., “Sorption of CO2, C2H4 N2O, and Their Binary Mixtures in Poly(methylmethacrylate)”,J. Polym. Sci, Polym. Phys. Ed.,24, 175 (1986).
Sengupta, A. and Sirkar, K. K., “Analysis and Design of Membrane Permeators for Gas Separation”, in Noble, R. D. and Stern, S.A. (Ed.), Membrane Separations Technology. Principles and Applications, Elsevier, Amsterdam, pp. 499 (1995).
Sidhoum, M., Sengupta, A. and Sirkar, K. K., “Asymmetric Cellulose Acetate Hollow Fibers: Studies in Gas Permeation”,AIChE J.,34, 417 (1988).
Thorman, J. M. and Hwang, S.-T., “Compressible Flow in Permeable Capillaries under Deformation”,Chem. Eng. Sci.,33, 15 (1978).
Yi-Yan, N., Felder, R.M. and Koros, W.J., “Selective Permeation of Hydrocarbon Gases in Poly(tetrafluoroethylene) and Poly(fluoroethylene/propylene copolymer)”,J. Appl. Polym. Sci.,25, 1755 (1980).
UBE Gas Separation System by Polyimide Membrane ; UBE Industries Product Catalog, Tokyo, 1994.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Chang, D., Min, J., Oh, S. et al. Effect of pressure drop on performance of hollow-fiber membrane module for gas permeation. Korean J. Chem. Eng. 15, 396–403 (1998). https://doi.org/10.1007/BF02697129
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02697129