Method for increasing the purity of hydrogen recycle gas
US4212726A · kind A · utility
33Cited by
7References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1977 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | Nov 23, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/0485
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for hydrotreating hydrocarbon feedstocks and for recovering from the resulting effluent stream selected hydrocarbon fractions, and hydrogen for recycle and other uses with improved purity. Relatively pure hydrogen is provided by separating the effluent stream into a hydrogen-containing gaseous stream and a liquid phase hydrocarbon product, and then contacting the gaseous hydrogen-containing stream in a first absorption step with the liquid phase hydrocarbon product obtained in the gas-liquid separation step, and in a second extraction step with a stabilized portion of the liquid phase hydrocarbon product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.