Hydrogen recovery from hydrocarbon synthesis processes
US7405243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2004 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Apr 23, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/42
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process for producing a hydrogen-rich stream from a hydrogen-depleted stream. More particularly, the invention relates to a hydrocarbon synthesis process, by way of example, a Fischer Tropsch process, from which both hydrocarbons and high purity hydrogen are obtained. The process comprises contacting the hydrogen-depleted stream with a first reverse-selective membrane and a second reverse-selective membrane to provide a CO2-enriched permeate and a hydrogen-containing retentate. The high purity hydrogen is produced from the hydrogen-containing retentate. The high purity hydrogen thus obtained may be used in a process selected from the group consisting of upgrading hydrocarbons produced from the hydrocarbon synthesis process, hydrotreating a natural gas stream, recycling to the hydrocarbon synthesis reaction unit, high purity hydrogen production, catalyst rejuvenation, and combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.