Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The influence of limestone addition at different positions on gaseous emission from a coal-fired circulating fluidized bed combustor
This paper investigates the influence of limestone addition at two different positions in the riser, one at the bottom of the riser and the other above the secondary air injection ports, on SO2, N2O, NO/NO(x) and CO emissions from a coal-fired circulating fluidized bed combustor with a riser of diameter 161 mm and length 6.2 m. In addition to reducing SO2 emissions, limestone addition at either position always results in decrease in N2O and CO emissions and increases in NO/NO(x) emissions. Although the SO2 emission is almost independent of the limestone injection position, the small difference in the effects, on the other gaseous emissions, of limestone addition between two injection positions is noticeable. Limestone addition above the secondary air injection ports results in larger reductions in N2O and CO emissions but also greater increases in NO/NO(x) emissions than limestone addition at the bottom of the riser. A relatively small N2O reduction (20 % or less) together with associated increases in NO/NO(x) emissions lead to the conclusion that limestone addition at either of the positions is not an effective method for reducing N2O emissions from circulating fluidized bed combustors.
The influence of limestone addition at different positions on gaseous emission from a coal-fired circulating fluidized bed combustor
This paper investigates the influence of limestone addition at two different positions in the riser, one at the bottom of the riser and the other above the secondary air injection ports, on SO2, N2O, NO/NO(x) and CO emissions from a coal-fired circulating fluidized bed combustor with a riser of diameter 161 mm and length 6.2 m. In addition to reducing SO2 emissions, limestone addition at either position always results in decrease in N2O and CO emissions and increases in NO/NO(x) emissions. Although the SO2 emission is almost independent of the limestone injection position, the small difference in the effects, on the other gaseous emissions, of limestone addition between two injection positions is noticeable. Limestone addition above the secondary air injection ports results in larger reductions in N2O and CO emissions but also greater increases in NO/NO(x) emissions than limestone addition at the bottom of the riser. A relatively small N2O reduction (20 % or less) together with associated increases in NO/NO(x) emissions lead to the conclusion that limestone addition at either of the positions is not an effective method for reducing N2O emissions from circulating fluidized bed combustors.
The influence of limestone addition at different positions on gaseous emission from a coal-fired circulating fluidized bed combustor
Einfluß eines Kalksteinzusatzes an unterschiedlichen Stellen auf die gasförmigen Emissionen aus einer kohlebefeuerten, zirkulierenden Wirbelschichtbrennkammer
Liu, H. (Autor:in) / Gibbs, B.M. (Autor:in)
Fuel ; 77 ; 1569-1577
1998
9 Seiten, 7 Bilder, 2 Tabellen, 31 Quellen
Aufsatz (Zeitschrift)
Englisch
Experimental Study and Simulation of a Coal-fired Circulating Fluidized Bed
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