Method and device for separating polar from non-polar liquids using membranes
US4846977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1986 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Oct 21, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G31/11
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is a method for separating one or more polar liquids from one or more non-polar liquids which comprises the following steps. First, contacting a mixture comprising one or more polar liquids and one or more non-polar liquids with one side of a membrane comprising a polymer of a perfluorosulfonic acid, or metal salt thereof, which is adapted for selective permeation of the polar liquids over the non-polar liquids under conditions such that the polar liquids selectively permeate through the membrane. Second, passing a desiccant fluid by, pulling a vacuum on, or a combination thereof, the other side of the membrane, under conditions such that the polar liquids which have permeated through the membrane are carried away from the membrane. Third, removing the fluid desiccant containing the permeated polar liquids or the permeated polar liquids wherein a vacuum is used, from the vicinity of the membrane. Fourth, removing the non-polar liquids from the vicinity of the membrane. Another aspect of this invention is a novel hollow fiber membrane device useful for performing a preferred mode of the above-described method. This method allows the removal of one or more polar liquids…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.