Sheet-material associating – Associating or disassociating – Signature associating
Patent
1990-06-07
1991-07-23
Sever, Frank
Sheet-material associating
Associating or disassociating
Signature associating
21032183, B01D 6310
Patent
active
050341260
ABSTRACT:
The present invention relates to an improved design for a spiral wound membrane separation device. The improved module has one feed pipe separated into compartments which are connected axially to a porous spacer surrounded by a membrane envelope. A separate permeate pipe is immediately adjacent and generally in a parallel configuration to the fluid feed pipe and is in fluid communication with a different porous spacer sheet. When the porous feed membrane and pipe and spacer and permeate pipe are combined using appropriate complementary shaped spaced filling means, a spiral wound membrane separation device is obtained having two centrally located pipes. In one aspect, the membrane separation module further includes means for the addition of a countercurrent or cocurrent sweep fluid (gas) the permeate.
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Moon Tag Y.
Reddy Damoder
Reineke, deceased Charles E.
Sever Frank
The Dow Chemical Company
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