Cryogenic air separation process with excess turbine refrigeration
US7665329B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Nov 17, 2008 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Nov 17, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for carrying out cryogenic air separation wherein liquid oxygen is pressurized and vaporized against condensing feed air to produce oxygen gas product wherein excess plant refrigeration is generated such that the aggregate warm end temperature difference of the process exceeds the minimum internal temperature difference of the primary heat exchanger by at least 2K.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.