Distribution of gas concentration in a furnace of large-scale CFB boiler

• Autorzy: Sekret R. , Nowak W. , Hartge E. U. , Werther J.
• Języki publikacji: EN

Abstrakty

EN

In the curent paper an analysis of the distribution of: O2, CO, NO and SOz concentration in the furnace of a large-scale circulating fluidized bed (CFB) boiler has been presented. The research was carried out in the furnace of a 670 MW, CFB boiler. The furnace was equipped with 25 measurement holes. In order to measure the local gas concentrations inside the combustion chamber gas suction probes were used. The measured gas concentration profiles indicate an oxygen-depleted wall region with a thickness of about 0.5 m. Significant differences are observed between gas concentrations near the front wall and those near the rear wall: Oz and NO are lower and CO is higher near the front wall than near the rear wall. It can be concluded that these effects are related to the fuel dispersion: near the rear wall the lateral ash flow transports fuel deeper into the combustion chamber and thus avoids the formation of plumes.

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2004
• Tom: Vol. 24 nr 3-4
• Strony: 169--178
• Opis fizyczny: rys.

Twórcy

autor

Sekret R.

• Częstochowa University of Technology, Faculty of Environmental Protection and Engineering Dąbrowskiego 71, 42-200 Częstochowa, Poland Tel.Fax: [phone]

autor

Nowak W.

• Częstochowa University of Technology, Faculty of Environmental Protection and Engineering Dąbrowskiego 71, 42-200 Częstochowa, Poland Tel.Fax: [phone]

autor

Hartge E. U.

• Technical University Hamburg-Harburg, Deptment of Chemical Engineering, I Denickestrasse 15, 21073 Hamburg, Germany, Tel. [phone], Fax: [phone]

autor

Werther J.

• Technical University Hamburg-Harburg, Deptment of Chemical Engineering, I Denickestrasse 15, 21073 Hamburg, Germany, Tel. [phone], Fax: [phone]