Patent ID: 7812207
Filing Date: 2010-10-12
Classification: B01D,C07C

Abstract:
1. A membrane separation process comprising: a. passing a fluid feed containing at least two components to be separated to a retentate side of a selective permeation membrane having a retentate side and opposing permeate side, b. maintaining a driving force across the membrane to effect separation of at least one of said components by permeation through the membrane to provide a permeate fraction on the permeate side of the membrane, c. withdrawing at least 5 mass percent of the fluid feed for admixing with at least a portion of said permeate fraction without said withdrawn portion passing through said membrane, and d. withdrawing a retentate fraction from the retentate side of the membrane, said retentate fraction having a greater concentration of the other of said at least two components than said feed.