Side column cryogenic rectification system for producing lower purity oxygen
US5463871A · kind A · utility
20Cited by
21References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Oct 4, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2250/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic rectification system employing a double column and an auxiliary side column in which product lower purity oxygen is produced wherein the side column is driven by condensing compressed feed air enabling the system to operate with lower head pressure and thus lower operating costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.