Process and apparatus for the separation by cryogenic distillation of a mixture of methane, carbon dioxide and hydrogen
US10337791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2013 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Feb 3, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a process for the cryogenic separation of a feed mixture of at least carbon monoxide, hydrogen and methane, the feed mixture is separated in a methane wash column fed by a liquid methane stream at the top of the methane wash column to produce a gas enriched in hydrogen, a liquid stream from the bottom of the methane wash column is treated to produce a mixture of carbon monoxide and methane, the mixture of carbon monoxide and methane is separated in a separation column to produce a gas enriched in carbon monoxide and a liquid methane flow at least part of which forms a purge stream, the purge stream being varied to take account of load variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.