Formation and Decomposition of N sub(2)O in Fluidized Bed Boilers

• Published in: Fuel (Guildford) Vol. 74; no. 2; p. 165
• Main Authors: Bonn, Bernhard, Pelz, Gudrun, Baumann, Herbert
• Format: Journal Article
• Language: English
• Published: 01.02.1995
• ISSN: 0016-2361

Emissions of N sub(2)O from industrial processes and power plants have been the subject of increased scrutiny of late due to a burgeoning awareness of potential climatic effects. A series of tests seeking to evaluate the emissions of N sub(2)O from different coal-fired appliances are described. Conventional appliances tend to emit lower concentrations of this gas. However, fluidized beds typically emit higher concentrations of N sub(2)O because of their lower combustion temperatures. To further investigate this phenomenon, measurements were conducted on a circulating fluidized bed boiler having a thermal output of greater than 200 MW. The measurements were conducted under a variety of operating conditions. The limestone feedrate had a negligible impact on emissions.