System and method for controlling NOx emissions from boilers combusting carbonaceous fuels without using external reagent
US6979430B2 · kind B2 · utility
5Cited by
10References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 18, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Aug 4, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23J2219/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system and a method for controlling NOX emissions from a boiler that combusts carbonaceous fuels. The method includes the steps of (a) introducing carbonaceous fuel and combustion air into a furnace of the boiler for combusting the carbonaceous fuel in oxidizing conditions and producing flue gas including NOX and CO, and (b) leading flue gas from the furnace to a catalyst section in a flue gas channel for converting, free from introducing an external agent for NOX reduction, NOX to N2 and CO to CO2 by using CO as the reductant of NOX on a catalyst in the catalyst section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.