MEMBRANE CONTACTOR COMPRISING A COMPOSITE MEMBRANE OF A POROUS LAYER AND A NON-POROUS SELECTIVE POLYMER LAYER FOR CO₂ SEPARATION FROM A MIXED GASEOUS FEED STREAM

摘要

A membrane contactor system for separating CO₂ from a mixed gaseous feed stream comprising CO₂, said contactor system comprising: (i) a composite membrane, said membrane having a permeate side and a retentate side; (ii) said retentate side being exposed to a mixed gaseous feed stream comprising carbon dioxide; (iii) said permeate side being exposed to a carbon dioxide capture organic solvent; (iv) said composite membrane comprising a porous layer and a non-porous selective polymer layer, said non-porous selective polymer layer selectively allowing transport of CO₂ across the composite membrane from said mixed gaseous feed stream so that it dissolves in said capture solvent whilst limiting the transport of said capture solvent across the composite membrane.