Spiral wound element for separation
US5275726A · kind A · utility
119Cited by
22References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D63/107
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved spiral wound element for separations is disclosed wherein the improvement comprises using as the feed/retentate space one or more layers of a material having an open cross-sectional area in the range 30 to 70% and as the permeate spacer material at least three layers of material two of which are fine and have an open cross-sectional area of about 10 to 50% surrounding a coarse layer having an open cross-sectional area of about 50 to 90%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.