Gas separation process
US4581052A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1984 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Jul 2, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A crystallization process is disclosed for separating a crystallizable material and an excluded material which is at least partially excluded from the solid phase obtained upon freezing a liquid mixture of the materials. The solid phase is formed and melted at spaced locations in a liquid mixture of the materials and, within the liquid mixture, internal solid and liquid flows are maintained in opposite directions to effect separation of the materials. The solid phase is formed by evaporative cooling of the liquid mixture and melted by direct contact with a condensing vapor phase of the materials, each of these operations being performed substantially at the prevailing triple point locus conditions in the respective locations in the liquid mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.