Title:
FEED SPACERS FOR SPIRAL WOUND MEMBRANE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2013/085755
Kind Code:
A3
Abstract:
A feed channel spacer for a spiral wound membrane element has Inlet and outlet edges that are thinner than the rest of the spacer material. The edges may be made thinner, for example, by passing the edges of a sheet of feed spacer material through a pair of hot rollers or by compressing the edges of the sheet in a heated press. The thinned edges of the feed spacer material are located in the element between glue lines applied to the permeate spacers of the element. The thin edges allow a greater membrane surface area to be provided in a given element diameter. A feed channel spacer may also have an area with obstructions to create micro-mixing effects. These obstructions may be provided on a feed spacer sheet of constant thickness, or one with thin edges.
Inventors:
TAYALIA YATIN (SG)
DONTULA PRASANNA RAO (IN)
BHARWADA UPEN JAYANT (US)
DONTULA PRASANNA RAO (IN)
BHARWADA UPEN JAYANT (US)
Application Number:
PCT/US2012/066695
Publication Date:
August 15, 2013
Filing Date:
November 28, 2012
Export Citation:
Assignee:
GEN ELECTRIC (US)
International Classes:
B01D63/10
Domestic Patent References:
| WO2002020142A1 | 2002-03-14 |
Foreign References:
| US20040173528A1 | 2004-09-09 | |||
| US4861487A | 1989-08-29 | |||
| EP0347174A1 | 1989-12-20 | |||
| US20030205520A1 | 2003-11-06 | |||
| US4834881A | 1989-05-30 |
Attorney, Agent or Firm:
WINTER, Catherine, J. et al. (Global Patent Operation2 Corporate Drive, Suite 64, Shelton CT, US)
Download PDF: