Process for the reduction of NO.sub.x in fluidized-bed furnaces
US4648331A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1985 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Mar 4, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C10/002
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a process for lowering the NO.sub.x content in combustion waste gases with the use of a reducing agent, the reducing agent has heretofore been added in all cases to the combustion gases downstream of the incineration. According to the invention, it is suggested in a fluidized-bed incineration to introduce the reducing agent into the fluidized bed. It is preferred, in this connection, to admix reducing agent to the utilized fuel and/or to the combustion air and/or to introduce the reducing agent directly into the incineration. Especially preferred reducing agents are NH.sub.3 or nitrogen-containing hydrocarbon compounds. Various additional versions of the feeding operation are possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.