Investigations on the ability of di-isopropanol amine solution for removal of C from natural gas in porous polymeric membranes

In this study, capture of C[O.sub.2] and [H.sub.2]S from natural gas mixture using porous polymeric membranes has been investigated numerically to assess the capacity of a novel absorbent, di-isopropanol amine (DIPA), in C[O.sub.2] removal. Diffusion of acid gases through porous polymeric membranes was simulated by employing CFD techniques and considering a gas feed stream, a porous membrane and a reaction medium. For solving conservation equations, finite element method was applied to calculate the rate of C[O.sub.2] and [H.sub.2]S absorption in the membrane. The type of membrane in this work is a hollow-fiber module. According to the modeling results, a high [H.sub.2]S removal can be achieved by DIPA absorber. Moreover, C[O.sub.2] was captured from natural gas in an efficient manner in low gas/liquid flow rates.