Coal combustion process
US4285283A · kind A · utility
19Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1979 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Dec 7, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C6/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Disclosed is a process for combusting coal wherein the emission of SO.sub.x or the emission of SO.sub.x and NO.sub.x are minimized. The process comprises (a) providing a coal containing at least twice as much organic calcium than sulfur; (b) burning the coal at a temperature greater than about 1200.degree. C. under reducing conditions; (c) separating the solid effluents from the gaseous effluents; and (d) burning the gaseous effluents at a temperature from about 1000.degree. C. to 1500.degree. C. under oxidizing conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.