Cryogenic distillative separation of acid gases from methane
US4318723A · kind A · utility
111Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1979 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Nov 14, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/929
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of eliminating solids formation in a cryogenic distillative separation of acid gases from methane is disclosed. This method comprises adding a solids-preventing agent to the solids potential zone of the distillation column. Typical solids-preventing agents are one or more C.sub.2 -C.sub.5 alkanes, or other nonpolar liquids which are miscible with methane at the column conditions. The elimination of solids formation permits a more complete separation to be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.