Power plant with combustion in a fluidized bed
US4779574A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1987 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Oct 28, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C10/16
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention relates to a power plant for combustion of a fuel, for example carbon, in a combustion chamber (2) in a bed (10) of fluidized particulate material, primarily a PFBC power plant. The plant includes a multi-stage steam turbine (13) and an intermediate superheater (12) for superheating steam between the turbine stages. The combustion chamber (2) is divided into a first and a second part (2a, 2b) by a wall (4) having one or more openings (42, 43) which takes up a minor part of the cross-section in the bed region and makes possible a limited exchange of bed material. The first part (2a) includes a nest of boiler tubes (11) for generating steam. The second combustion chamber part (2b) includes a nest of boiler tubes (12) for intermediate superheating of steam between the turbine stages. The combustion chamber parts (2a, 2b) are each connected to a fuel supply system (20, 21, 22 and 23, 24, 25, respectively). The control of the superheating takes place by control means (62) which control the bed temperature in the second combustion chamber part (2b) by controlling the fuel supply to said combustion chamber part (2b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.