High purity membrane nitrogen
US5378263A · kind A · utility
53Cited by
17References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/226
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Multi-stage membrane systems are arranged so that, with the same number of modules and compressors, mixing losses upon combining recycle and feed streams are minimized. Membrane surface area and power requirements are reduced thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.