Fast fluidized bed steam generator
US4183330A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1977 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Dec 28, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B31/0038
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A steam generator in which a high-velocity, combustion-supporting gas is passed through a bed of particulate material to provide a fluidized bed having a dense-phase portion and an entrained-phase portion for the combustion of fuel material. A first set of heat transfer elements connected to a steam drum is vertically disposed above the dense-phase fluidized bed to form a first flow circuit for heat transfer fluid which is heated primarily by the entrained-phase fluidized bed. A second set of heat transfer elements connected to the steam drum and forming the wall structure of the furnace provides a second flow circuit for the heat transfer fluid, the lower portion of which is heated by the dense-phase fluidized bed and the upper portion by the entrained-phase fluidized bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.