Water separation from solvent
US6749755B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 11, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Mar 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/4016
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for separating residual water from a solvent. The device comprises a reservoir containing a solution comprising solvent containing residual water, the reservoir having an opening to allow the solution to drain from the reservoir. A membrane layer is provided comprising a layer of fluropolymer material, said membrane material having a IPA Bubble Point of ≧25 psi. The membrane is positioned in series with the reservoir opening. Vacuum is generated on one side of the membrane layer wherein the solvent containing water passes through the membrane therein removing water from the solvent to provide a solvent with a water level of less than or equal to 1.0 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.