Low temperature refrigeration process for helium or hydrogen mixtures using mixed refrigerant
US3992167A · kind A · utility
28Cited by
12References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1975 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Apr 2, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/895
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A low temperature refrigeration process wherein a feed gas mixture comprising hydrogen or helium as major component and a minor component with normal boiling point above 170.degree. K and molecular weight of at least 28 is dynamically compressed at higher temperature and cooled to intermediate temperature for condensation and separation of the minor component. Pure major component is further cooled and work expanded at lower temperature and recycled for mixing with the condensed minor component during rewarming to form at least the major fraction of the feed gas mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.