Overfiring air port, method for manufacturing air port, boiler, boiler facility, method for operating boiler facility and method for improving boiler facility
US7878130B2 · kind B2 · utility
14Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2005 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Mar 27, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23L2900/07009
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A overfiring air port of the present invention is to supply an incomplete combustion region with air making up for combustion-shortage, in a furnace in which the incomplete combustion region less than stoichiometric ratio is formed by a burner. Furthermore, the airport is characterized by comprising: a nozzle mechanism for injecting air including an axial velocity component of an air flow and a radial velocity component directed to a center line of the airport; and a control mechanism for controlling a ratio of these velocity components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.