| 摘要 |
There is provided a process for recovering a gas from a feed gas mixture subject to wide variation in flow rate of at least 1.8 times the minimum positive flow rate comprising contacting the feed gas mixture with a membrane selectively permeable to said gas at a membrane number, as defined, of at least 0.5 and at a partial pressure differential for said gas sufficient to provide a driving force for permeation of said gas and recovering from said membrane a permeated gas mixture more concentrated in said gas and having a percentage variation in flow rate of no more than about 0.6 of the percentage variation in flow rate of the feed gas mixture. |
