Oil-fired burner, solid fuel-fired burner unit, and solid fuel-fired boiler
US9702545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2012 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Aug 24, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D11/38
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An oil-fired burner (30A) for warming, disposed adjacent to the outer periphery of a pulverized coal burner which inputs pulverized coal and air into a furnace, includes: an oil gun (32) for inputting an oil fuel disposed at the center of an outlet opening of a nozzle main body (31) substantially rectangular in cross-section; and a secondary air input port (40) disposed so as to surround the outer periphery of the oil gun (32), wherein the secondary air input port (40) is constituted of: a central arc section (41) substantially similar in shape to a circular diffuser (34) mounted on the leading end side of the oil gun (32); and rectangular sections (42L, 42R) provided continuously from both sides of the central arc section (41) and narrowed in face-to-face dimension in the direction of the adjacent pulverized coal burners so as to increase the distance from them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.