PROCESS FOR MEMBRANE SEPARATION OF GAS MIXTURES

摘要

A method for the substantial separation of at least ore gas component from a gas mixture to generate a residue gas substantially depleted of said gas components. A semipermeable membrane is provided which has a feed gas side and a sweep gas side. The feed gas side is contacted with a feed gas mixture containing at least one gas to be retained and at least one gas to be separated therefrom. The sweep side is simultaneously contacted with a sweep gas having a pressure lower than that of the feed gas. The partial pressure of certains gas components present on both sides of the membrane are balanced to cause the remaining gas components to diffuse in either direction across the membrane depending upon their differential partial pressures.