Dual fuel fluidised bed gasification/combustion system
US5868082A · kind A · utility
Inventor
Key dates
| Filing date | Jun 19, 1995 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Jun 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/18
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A dual fuel gasification-combustion system (44)with multi-stage fluidised bed gasifier (32)for complete carbon conversion of the input fuel using single or combineable oxidants and sulphur sorbents to produce a clean fuel gas and combustion gas at any pressure for use with boilers gas turbines,or, combined cycle gas-steam turbines.The application (44) for combined cycle power includes a multi-stage gasifier (32)with design number of stages to maximise carbon conversion of input liquid or solid fuels being connected to a gas turbine (53)via gas cleaners (45),(47)and afterburner (46)to produce a clean combustion gas entering the gas turbine. The system has coolant conduits (6) in the gasifier and in the afterburner at (50) and generated steam from the boiler (54) for the steam turbine (51). The system also includes fuel storage and delivery system (38) and storage and seperation unit (39) for seperation of carbon from ash and spent sorbent,the latter regenerated for re-use in the gasifier or for disposal;booster burners (59) as alternative to burn off minor amounts of carbon from seperation unit (39).Embodiments of the system are described with accompanying drawings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.