Apparatus for cooling a middle region of the wall of a hearth in a fluidized bed boiler
US5168819A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Sep 26, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B37/40
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Apparatus for cooling the wall of a fluidized bed hearth in a middle join region of generally upsidedown V-shaped vertical right cross-section between the upsidedown truncated pyramid-shaped bottom portions of the furnace above two parallel floors and a top portion of rectangular right cross-section, having a front face and a rear face parallel to the ridge of the upsidedown V-shape and having side faces perpendicular to said ridge, said wall being provided with heat exchanger tubes conveying water or an emulsion of water and steam, wherein the heat exchanger tubes are essentially horizontal and disposed in the flanks of the upsidedown truncated pyramid-shaped lower portions in line with the upsidedown V-shape and open out into tubes lining the side faces perpendicular to the ridge thereof. This makes it possible to perform cooling by natural circulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.