Analysis of hollow fiber membrane systems for multicomponent gas separation

R. Khalilpour, A. Abbas, Z.P. Lai, I. Pinnau
Chem. Eng. Res. Des., 91, pp. 332-347, (2013)

Analysis of hollow fiber membrane systems for multicomponent gas separation

Keywords

Gas membrane, Modelling, Design, Multicomponent gas, Natural gas sweetening, Hollow fibre

Abstract

​This paper analysed the performance of a membrane system over key design/operation parameters. A computation methodology is developed to solve the model of hollow fibre membrane systems for multicomponent gas feeds. The model represented by a nonlinear differential algebraic equation system is solved via a combination of backward differentiation and Gauss–Seidel methods. Natural gas sweetening problem is investigated as a case study. Model parametric analyses of variables, namely feed gas quality, pressure, area, selectivity and permeance, resulted in better understanding of operating and design optima. Particularly, high selectivities and/or permeabilities are shown not to be necessary targets for optimal operation. Rather, a medium selectivity (<60 in the given example) combined with medium permeance (∼300–500 × 10−10 mol/s m2 Pa in the given case study) is more advantageous. This model-based membrane systems engineering approach is proposed for the synthesis of efficient and cost-effective multi-stage membrane networks.

Code

DOI: 10.1016/j.cherd.2012.07.009

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