Patent ID: 6616841
Filing Date: 2003-09-09
Classification: B01D

Abstract:
A contactor for degassing a liquid comprising:a perforated core; a pre-shrunk microporous membrane fabric wrapped around said core, wherein said fabric is pre-shrunk by heat at about 15Â° C. above the operating temperature for 2-8 hrs for the fabric stabilization, said fabric comprising a polymethyl pentene hollow fiber weft and a polyolefin warp yarn wherein the weft count is between 50 and 70 fibers per inch, the warp count is between 3 and 12 yarns per inch, and the warp yarn is finer than an 80 denier 40 filament yarn; a tube sheet securing the ends of said fiber; a shell encasing said tube sheet and fabric; at least one opening in said shell to permit fluid flow through said shell; and an end cap affixed to the shell.