High-temperature sorbent method for removal of sulfur containing gases from gaseous mixtures
US4455286A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1982 |
| Grant date | Jun 19, 1984 |
| Priority date | — |
| Expiry date | Jul 7, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A copper oxide-zinc oxide mixture is used as a sorbent for removing hydrogen sulfide and other sulfur containing gases at high temperatures from a gaseous fuel mixture. This high-temperature sorbent is especially useful for preparing fuel gases for high temperature fuel cells. The copper oxide is initially reduced in a preconditioning step to elemental copper and is present in a highly dispersed state throughout the zinc oxide which serves as a support as well as adding to the sulfur sorption capacity. The spent sorbent is regenerated by high-temperature treatment with an air fuel, air steam mixture followed by hydrogen reduction to remove and recover the sulfur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.