Method and apparatus for separating of product gas from raw gas
US4696689A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1985 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Dec 2, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2280/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas separating method and a gas separating apparatus according to the present invention effectively carry out the generation of the cryogenic effect within a plant for separating and extracting valuable gases such as nitrogen, oxygen, argon or the like from raw gas. For this purpose, the arrangement is such that low temperature gas within a process is subjected to a thermal exchange with the raw gas in a heat exchanger and is thermally restored; the thus restored gas is fed to a booster driven by an expansion turbine to be pressurized therein; the thus pressurized gas is cooled to the normal temperature by a cooler; the cooled gas is further cooled in the heat exchanger; and the still lower temperature gas is supplied to the expansion turbine to be adiabatically expanded, thereby generating the cryogenic effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.