Equipment and method for filtration using a fabric of polyacrylonitrile fibers
US4902433A · kind A · utility
3Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1987 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Sep 2, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/1291
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A backwashable filter element consists essentially of a fabric of polyacrylonitrile fibres wherein the diameter of the fibres is in the range 10 to 50 microns and the density of the element is in the range 0.05 to 0.50 g/cc. The element is suitable for use in filtering sea water, particularly for sea water injected into petroleum reservoirs to assist in the recovery of crude oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.