Oxidative coupling of methane with carbon conservation
US6096934A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/943
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for converting methane to ethane and ethylene through oxidative coupling of methane and carbon conservation has been developed. The process begins by contacting methane and an oxygen-containing stream with an oxidative coupling catalyst that is capable of reacting with carbon oxides to form a solid carbonate compound in an oxidative coupling reactor to produce an effluent containing methane, ethane, and ethylene. The solid carbonate compounds are thermally decomposed to the oxidative coupling catalyst by reaction with hot hydrogen. The oxidative coupling catalyst is then available for reuse and a stream containing hydrogen and carbon oxide by-products are produced. The stream containing hydrogen and carbon oxide by-products is contacted with a methanation catalyst in a methanation reactor to produce a stream containing methane and water. The methane is separated, dried, and recycled to the oxidative coupling reactor. Alternatively methane and an oxygen-containing stream may be contacted with an oxidative coupling catalyst in an oxidative coupling reactor to produce an effluent containing methane, ethane, ethylene and carbon oxides. The effluent is passed to an adsorption …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.