US 2003/0192820 A1 · Hollow fiber membrane contactor

Abstract

The present invention is directed to a contactor for degassing a liquid. The contactor includes a perforated core and a microporous membrane fabric wrapped around the core. The fabric includes a polymethyl pentene hollow fiber as a weft fiber and a warp yarn. A tube sheet secures the ends of the wound fiber and a shell encases the tube sheet and fabric. The shell has at least one opening to permit fluid flow through the shell and an end cap. In a further embodiment the invention is directed to a contactor for degassing a liquid wherein the contactor is adapted to withstand pressures greater than 0.4 MPa and temperatures greater than 50° C.

Claims20

Dependent claims

A contactor for degassing a liquid comprising:

a perforated core;
a pre-shrunk microporous membrane fabric wrapped around said core, 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.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/424,327Filed 28 Apr 2003

Priority

21 Jun 2001

Published

16 Oct 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

B01D 71/262
Polyalkenes: polypropylene
B01D 19/0031
Degasification of liquids: by filtration
B01D 61/00
Processes of separation using semi-permeable membranes
B01D 63/0232
Manufacturing thereof: using hollow fibers mats as precursor, e.g. wound or pleated mats

Hollow fiber membrane contactor

Life of this patent

Hollow fiber membrane contactor

Life of this patent

Abstract

Claims20