Mathematical modeling of carbon dioxide separation from gaseous mixture N2/CO2 using polypropylene hollow membrane contactor in the presence of aqueous amines

Document Type : Research paper

Abstract

In this paper, the mathematical modeling of carbon dioxide removal from the gas mixture of N2/CO2 in a polypropylene hollow fiber membrane contactor in the presence of amines is studied. Modeling was performed in both axial and radial directions under the fully-wet condition for countercurrent gas-liquid flow arrangement. To evaluate the model, the results of this model with experimental data and results of COMSOL software were compared. The results showed that, the CO2 removal efficiency increased with the increase of the liquid flow rate, number of fibers, membrane length,porosity-to-tortuosity ratio and solvent concentration, but, decrease by increasing gas flow rate. The results show that percentage of CO2 removal by the polypropylene hollow fiber membrane is higher than the polyvnildeflouride and polytetrafluroethylene hollow fiber membranes in the presence of MEA. Finally, the results showed that by increasing the wetting, the removal of gas is reduced.

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Journal of Separation Science and Engineering
Volume 9, Issue 1
September 2017
Pages 81-97

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