B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 63/10 (2006.01) B01D 61/14 (2006.01)
Patent
CA 2043330
An ultrafiltration module (10) and method of constructing same is the subject of the present invention. The module (10) comprises a permeate collector tube (12) and one or more membrane leaves (16) wound around the tube (12) together with a feed channel spacer (18) so as to present spaced layers of membrane leaves or envelopes that are contacted by fluid flowing axially through the module (10) in the channel provid- ed by the feed spacer screen (18). The feed spacer screen (18) projects beyond the terminal ends of the leaves (16) to present an open mesh outerwrap screen (20) circumscribing the wound leaves (16). A plurality of restraining bands (22) are provided in longitudinally spaced relationship along the length of the module (10). These bands (22) are designed to hold the entire module assembly (10) in tight spiral relation- ship. Preferably, the bands (22) are constructed of heat shrinkable material and are thus secured in place and tight- ened by the application of heat. After the restraining bands (22) are in place, a bypass screen (24) also of open mesh configuration is wrapped around the outerwrap (20) and the re- #training bands (22) and secured by overlapping it onto itself and fusing the overlapped portion.
Colby David M.
Fagundes Carlos A.
Mcdermott Thomas C. Jr.
Koch Membrane Systems Inc.
Smart & Biggar
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