Solid-fuel-fired burner and solid-fuel-fired boiler
US10281142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2010 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Jun 7, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C2201/20
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A solid-fuel-fired burner that suppresses a high-temperature oxygen remaining region formed at the outer circumference of a flame and that can decrease the amount of NOx eventually produced is provided. A solid-fuel-fired burner that is used in a burner section of a solid-fuel-fired boiler for performing low-NOx combustion separately in the burner section and in an additional-air injection section and that injects powdered solid-fuel and air into a furnace includes a fuel burner having internal flame stabilization and a secondary-air injection port that does not perform flame stabilization, in which the air ratio in the fuel burner is set to 0.85 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.