Combustion method with cyclic supply of oxidant
US8231380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2005 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Apr 16, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C2900/06041
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention concerns a combustion method for industrial furnace comprising an arrangement of two substantially parallel and symmetrical burner assemblies (G, D). Each burner assembly comprises a fuel injector (10<SUB>G</SUB>, 10<SUB>D</SUB>) and three oxidant injectors (1<SUB>G</SUB>, 2<SUB>G</SUB>, 3<SUB>G</SUB>, 1<SUB>D</SUB>, 2<SUB>D</SUB>, 3<SUB>D</SUB>) arranged at increasing distances from the fuel injector. An oxidant supply system cyclically distributes a specific flow of oxidant among some at least of the second and third injectors of the burner assemblies (2<SUB>G</SUB>, 3<SUB>G</SUB>, 2<SUB>D</SUB>, 3<SUB>D</SUB>). The amount of nitrogen monoxide produced upon combustion is thus reduced, while ensuring a good distribution of the heating power in the furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.