Direct ignition of pulverized coal
US4241673A · kind A · utility
25Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1979 |
| Grant date | Dec 30, 1980 |
| Priority date | — |
| Expiry date | Nov 5, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2207/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Pulverized coal is ignited, to furnish energy for warm-up or low load operation of a coal burning furnace, by a technique which does not require the combustion of significant quantities of liquid or gaseous fuels. The direct ignition of pulverized coal in accordance with the present invention contemplates the delivery of a dense phase coal/air stream to an ignition zone where it receives ignition energy and the thus ignited mixture is thereafter contained in a recirculation region until the flame becomes self-sustaining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.