Distillative separation of methane and carbon dioxide
US4451274A · kind A · utility
12Cited by
5References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1983 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | May 12, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/929
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improvement in a Ryan/Holmes separation of methane from carbon dioxide is disclosed wherein the upper portion of a distillation column is operated, i.e., -70.degree. F., while still effectuating a separation of methane from carbon dioxide. This is achieved by increasing the amount of nonpolar liquid agent added to the condenser of the column to an amount sufficient to maintain the condenser and all portions of the column above such temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.