Title:
FLUORINE REMOVAL BY ION EXCHANGE
Document Type and Number:
WIPO Patent Application WO2005072482
Kind Code:
A3
Abstract:
A method for removing fluorine gas from a selected environment comprises contacting the fluorine gas with water to generate a solution of hydrofluoric acid and contacting the solution of hydrofluoric acid with an ion exchange resin having an active state operative to exchange selected ions therein for fluoride ions in the solution. The apparatus (200) may include a dual resin setup (222, 223) such that one of the ion-exchange resin can be in the service cycle while the other of the ion-exchange resins undergoes the regeneration and rinse/refill cycles.
Inventors:
JANGBARWALA JUZER (US)
Application Number:
PCT/US2005/000598
Publication Date:
April 06, 2006
Filing Date:
January 10, 2005
Export Citation:
Assignee:
BOC GROUP INC (US)
International Classes:
B01D53/68; B01D53/73; B01D53/96; B01J41/04; B01J47/00; B01J49/00; (IPC1-7): B01D53/68
Foreign References:
| US5059406A | 1991-10-22 | |||
| US4735786A | 1988-04-05 |
Other References:
See also references of EP 1713567A4
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