Title:
SPIRAL SEPARATION MEMBRANE ELEMENT, POROUS HOLLOW TUBE AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2011/158518
Kind Code:
A1
Abstract:
The disclosed spiral separation membrane element is provided with a porous hollow tube (1) having a plurality of through-holes (2) leading from the outer peripheral surface to the inner peripheral surface thereof, and a laminated body which is wound around the perimeter of the porous hollow tube (1), and which includes a separation membrane and flow channel material. Non-penetrating concave sections (3) are provided in a region on the outer peripheral surface of the porous hollow tube (1) which is covered by the laminate body. In order for permeated liquid to flow into the non-penetrating concave sections (3), the permeated liquid is able to flow smoothly within the non-penetrating concave sections (3), and the resistance to the permeated liquid can be reduced. Therefore, pressure loss is reduced, and the permeated liquid amount can be increased.
Inventors:
UDA YASUHIRO (JP)
HAMADA TOSHIMITSU (JP)
CHIKURA SHINICHI (JP)
HAMADA TOSHIMITSU (JP)
CHIKURA SHINICHI (JP)
Application Number:
PCT/JP2011/003485
Publication Date:
December 22, 2011
Filing Date:
June 17, 2011
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
UDA YASUHIRO (JP)
HAMADA TOSHIMITSU (JP)
CHIKURA SHINICHI (JP)
UDA YASUHIRO (JP)
HAMADA TOSHIMITSU (JP)
CHIKURA SHINICHI (JP)
International Classes:
B01D63/00; B01D63/10; B29C33/42; B29C45/26
Domestic Patent References:
| WO2004096410A1 | 2004-11-11 |
Foreign References:
| JPS5552885Y2 | 1980-12-08 | |||
| JPS63104617A | 1988-05-10 | |||
| JP2002136844A | 2002-05-14 | |||
| JPH11137974A | 1999-05-25 |
Attorney, Agent or Firm:
KAMADA, Koichi et al. (JP)
Koichi Kamata (JP)
Koichi Kamata (JP)
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Claims: