High-temperature fuel cells with oxygen-enriched gas
US5175061A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1990 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Apr 25, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In high-temperature fuel cells based on an ion-conducting electrolyte, wherein hydrogen and oxygen are converted into water, the cathode of the fuel cell is supplied with oxygen-enriched gas from an air separator, preferably a cryogenic air separator. This oxygen-enriched gas is supplied together with a CO.sub.2 -containing gas in a stoichiometric O.sub.2 /CO.sub.2 ratio. For the recovery of the O.sub.2 and CO.sub.2 components, a partial stream of the cathode outlet gas is recycled; for this purpose, the cathode outlet gas, used for regulating the fuel cell temperature, is cooled with production and/or superheating of steam and recompressed by means of a hot gas blower or a hot gas compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.