Hybrid solid oxide fuel cell and gas turbine electric generating system using liquid oxygen
US7743861B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2006 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jun 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/908
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hybrid SOFC/gas turbine electric generating system comprising an SOFC stack, a hydrocarbon reformer, a first anode tailgas hydrogen-rich combustor to drive a first gas turbine stage, and a second stoichiometric combustor to drive a second gas turbine stage to drive a generator. Anode tailgas is also recycled into the reformer for substantially endothermic reforming of hydrocarbon fuel. Oxidant is provided as pure oxygen—which may be stored as liquid oxygen. All nitrogen may be excluded. Cathode exhaust is passed to the first combustor, to the second combustor, and is recycled into the cathodes. The turbine exhaust is passed through successive heat exchangers cooled by liquid oxygen being vaporized, precipitating water and solid CO2. The system is operated at about 800 kPa (about 8 atmospheres), thereby increasing the power output of the stack. The system may be operated with no gaseous exhaust or with by-products of water and CO2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.