Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Iran


 A model is developed for separation of
multicomponent gas mixtures in a countercurrent hollow fiber membrane module.
While the model’s solution in countercurrent module usually involves in a time
consuming iterative procedure, a proper initial guess is proposed for beginning
the calculation and a simple procedure is introduced for correcting the
guesses, hereby the CPU time is decreased essentially. The model’s predictions
are compared with the experimental data and a good agreement is achieved. By
using data taken from a LAB unit in Isfahan, the proposed model is applied to
investigate the feasibility of membrane process for hydrogen separation in this
unit. It is revealed that a high hydrogen purity and recovery could be achieved
in the permeate stream, while the required area increases at higher stage cut
or higher permeate pressure.   


Main Subjects