High energy arc ignition of pulverized coal
US4228747A · kind A · utility
9Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1979 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | Feb 22, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2207/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An electrical discharge is controlled in such a manner as to permit its use to reliably ignite a fuel stream consisting of pulverized coal entrained in air. The ignition technique of the present invention creates expanding and contracting plasma pockets at a rate which is high compared to the velocity of the fuel stream and permits the ignition of the fuel stream in a cold furnace and/or without supplemental combustion of liquid or gaseous hydrocarbon fuels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.