Degassing a liquid with a membrane contactor
US6402818B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Jun 2, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2313/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A membrane contactor degasses a liquid. A liquid having a dissolved gas is introduced into a contactor which is connected to a vacuum source. The contactor has a perforated core, a plurality of hollow fiber membranes, a tube sheet affixing each end of the fibers, and a shell having a liquid egress. The shell encloses the fibers, the tube sheet, and the core. The hollow fiber lumens are in fluid communication with the vacuum source. Liquid enters the contactor via the core's open end radially exits the core, crosses over the membranes within the shell, and exits the contactor by the liquid egress. The dissolved gas thereby diffuses from the liquid across the membrane into the lumen. The liquid exiting may have a dissolved gas content to less than 1 ppb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.