Cha Bao Moua

US Patent:

20130098831, Apr 25, 2013

Filed:

May 16, 2012

Appl. No.:

13/473252

Inventors:

Prashant Vishwanath SHRIKHANDE - Eden Prairie MN, US
Steven John HARROLD - Chanhassen MN, US
Cha MOUA - Brooklyn Center MN, US
Phillip GOEBEL - New Hope MN, US
Yatin TAYALIA - Whitefield Bangalore, IN
Prasanna Rao DONTULA - Channasandra Bangalore, IN

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

B01D 63/10
B32B 37/10
B32B 37/12

US Classification:

210460, 210541, 210488, 156290, 156184

Abstract:

Membrane elements that use multiple membrane leaves may have a limited total active membrane area due to an increased diameter at the ends of the element. Membrane leaves may comprise a permeate carrier positioned between one or more membrane sheets. Adhesive may be used to seal one or more edges of the membrane leaf. The membrane sheets, permeate carrier and the adhesive contribute to the thickness of the edges of the membrane leaf and the diameter at the ends of the element. A reduced thickness of the edges of the permeate carrier may reduce the diameter at the ends of an element. Another permeate carrier sheet may also be used that is distanced from at least one edge of the membrane sheet so the permeate carrier sheet does not contribute towards the increased diameter at the ends of the element.