Process for supplying nitrogen from an on-site plant
US5226931A · kind A · utility
28Cited by
14References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Oct 24, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/0438
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for supplying nitrogen from an on-site air separation plant providing at least oxygen as a product, which entails feeding an air feed stream to an instrument-air compressor which is oversized relative to compressed air needed to feed an instrument controlling the plant, feeding at least a portion of the compressed air stream from the instrument-air compressor to a nitrogen membrane separator, thereby providing a stream of nitrogen product, and venting an oxygen-enriched air stream from the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.