Process and installation for the production of at least one gas from air under pressure
US5463870A · kind A · utility
2Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Aug 29, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
All the entering air is brought to a high pressure and then cooled to an intermediate temperature. At this temperature, a portion of the air is work expanded (in 4) to the medium pressure, and the rest is liquified. The low pressure column operates under a pressure of the order of 1.7 to 5 bars absolute, and its residual gas is expanded in a second turbine (9) after having been reheated to ambient temperature, then further heated (in 7) by heat exchange with the compressed air. Use for the production of impure oxygen under pressure and simultaneously at least one liquid product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.