Patent ID: 6503295
Filing Date: 2003-01-07
Classification: B01D,B01J,Y10S

Abstract:
A process for separating two gases having different molecular sizes in the range of about 2.5 Angstroms to about 5.0 Angstroms in a feedstream including these two gas components, the process comprising:(a) providing a polymer membrane having feed and permeate sides that incorporates carbon-based molecular sieve particles and that is selectively permeable to a first gas component over a second gas component, and (b) directing a feedstream including the first and second gas components to the feed side of the membrane and withdrawing a retentate stream depleted in the first gas component and withdrawing a permeate stream enriched in the first gas component from the permeate side of the membrane; wherein the selectivity of the first gas component through the particles is greater than the selectivity of the first gas component through the polymer.