Process and installation for the production of gaseous oxygen under pressure
US5400600A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1993 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | Jun 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/913
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Entering air, all of which is compressed to a first high pressure P1, is partly further compressed to a pressure P2. At intermediate temperatures, a portion of each air current is expanded in a turbine (7, 8). One of the turbines can have an output at a pressure P3 comprised between P1 and the medium pressure. The major proportion of the separated oxygen is withdrawn as a liquid from the low pressure column (13), pumped to the production pressure and vaporized in the heat exchange line (2) by condensation or pseudo-condensation of air at one of the pressures P1, P2 and P3, depending on whether the condensation occurs at subcritical or supercritical pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.