Split nozzle tip for pulverized coal burner
US4634054A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Mar 14, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2201/101
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An improved nozzle tip (30) which provides enhanced ignition and stabilization of pulverized fuel flames in furnaces operating at low load. The nozzle tip (30) comprises open-ended inner and outer shells (32,34) mounted to the fuel delivery pipe (12) and defining a flow passageway within the inner shell through which the pulverized fuel is directed into the furnace and an annular flow passageway (50) between the inner and outer shells through which additional air is directed into the furnace. A pair of diverging splitter plates (41,42) are disposed within the inner shell (32) so as to divide the flow passageway therethrough into two separate, diverging subpassages (52,54) so that the pulverized fuel stream discharging from the fuel delivery pipe is split into first and second streams (60,70) which pass from the nozzle tip (30) into the furnace in a diverging manner thereby establishing an ignition stabilizing pocket in the low pressure zone (80) created between the diverging fuel streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.