Low emissions burner with premix flame stabilized by a diffusion flame
US6575734B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2000 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Aug 30, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/00008
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A low emissions burner includes a diffusion burner surrounded by an annular array of premix burners. The diffusion burner operates at maximum swirl air flow and at a low constant fuel rate to reduce NOx emissions. The diffusion burner provides a stable swirling diffusion flame. An annular array of premix burners surrounds the diffusion burner and provides a non-swirling premix flame about the diffusion flame to advantageously provide a higher heat content about the periphery of the burner flame to facilitate industrial drying processes using the burner. The diffusion burner flame maintains the premixed flame stabilized. Water injection nozzles are provided each of the premix and diffusion burners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.