B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 69/00 (2006.01) B01D 61/00 (2006.01) B01D 61/02 (2006.01) B01D 69/02 (2006.01) F03G 7/04 (2006.01)
Patent
CA 2418329
The present invention concerns a semi-permeable membrane for use in osmosis consisting of one thin layer of a non-porous material (the diffusion skin), and one or more layers of a porous material (the porous layer), where the porous layer has a structure where porosity .PHI., thickness of the membrane x (m), and tortuosity .TAU., are related to one another as given by the expression: x .cndot. .TAU. = .PSI. .cndot. S wherein S is a structure parameter having a value equal to or less than 0.0015 meter. Further a method for providing elevated pressure by osmosis as well as a device for providing an elevated osmotic pressure and electric power is described.
L'invention concerne une membrane semi-perméable constituée d'une couche mince de matériau non poreux (couche de diffusion) et d'une ou de plusieurs couches d'un matériau poreux (couche poreuse), la couche poreuse possédant une structure pour laquelle la porosité phi , la longueur de pore x(m) et la tortuosité tau sont reliées l'une à l'autre par l'expression x<.> tau = phi <.>S dans laquelle S est un paramètre de structure. L'invention concerne aussi un procédé d'élévation de pression par osmose ainsi qu'un dispositif d'obtention de pression osmotique élevée et de production d'énergie électrique.
Holt Torleif
Thorsen Thor
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Statkraft Development As
Statkraft Sf
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