Pressurized liquid cryogen process
US6295840A · kind A · utility
1Cited by
16References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Nov 15, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic air separation process wherein one or more pressurized product streams enriched in oxygen, nitrogen and argon are produced by cryogenic distillation. One or more of the product streams are pressurized above the operating pressure of the distillation column by introducing a pressurizing fluid into a vessel containing a lower pressure product liquid. In the design of the system the pressurizing fluid can be air or streams enriched in oxygen, nitrogen or argon. Product stream pressurization is accomplished without the use of mechanical pumping devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.