Cryogenic air separation system for producing elevated pressure nitrogen
US7114352B2 · kind B2 · utility
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11References
19Claims
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Key dates
| Filing date | Dec 24, 2003 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Jan 4, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2245/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic air separation system for producing elevated pressure nitrogen wherein a portion of the nitrogen product fed to the product compressor downstream of the primary heat exchanger is withdrawn as refrigerant nitrogen from the product compressor, preferably from an intermediate point of the product compressor, and turboexpanded to generate refrigeration for the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.