Method and apparatus for nox reduction by upper furnace injection of coal water slurry
US5746144A · kind A · utility
15Cited by
12References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Jun 3, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C2201/101
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In a method for reducing NOx in the flue gas a coal water slurry is injected into the furnace above the primary combustion zone into a region having a temperature from 1800.degree. F. to 2700.degree. F. The slurry is preferably injected through atomizers and through injectors that introduce a continuous stream. Lime, ammonia, urea and completion air can also be injected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.