Patent ID: 6258271
Filing Date: 2001-07-10
Classification: B01D,B01J

Abstract:
A hollow membrane having a specific transfer surface area of 100 to 10,000 m.sup.2 for 1 dm.sup.3 of volume comprising two support layers (5a, 5b) arranged one above the other creating between them a space and a plurality of capillary tubes (3) wherein said membrane has from 10.sup.5 to 5.times.10.sup.8 capillary tubes per cm.sup.2 of support layer, said capillary tubes arranged between the two support layers and each having an opening at the level of each of the support layers in such a way as to form capillary channels for the flow of a first fluid, the space between the capillary tubes and the two support layers forming an internal cavity (7) for circulation of a second fluid around the capillary tubes, the two support layers and the capillary tubes being constituted by a permeable organic polymer.