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Distribution of solids concentration and temperature in the combustion chamber of the SC-OTU CFB boiler

Błaszczuk A., Komorowski M., Nowak W.

Journal of Power Technologies

2012

Vol. 92, nr 1

27-33

One of the main parameters influencing heat transfer in a circulating fluidized bed boiler is the distribution of the bed's solids concentration within the contour of the boiler’s combustion chamber. This paper contains an analysis of the impact of the solids concentration in a fluidized bed on the vertical temperature profile in the combustion chamber of a SC-OTU CFB boiler. Investigations were conducted at different loads of nominal generator power: 100%, 80%, 60% and 40%. Solids concentration was determined through pressure sensor measurements. Pressure measurements were taken at 11 measuring ports situated on the front wall of the combustion chamber. The vertical temperature profile was produced on the basis of temperature measurements from various furnace elevations. The combustion process was carried out at various primary to secondary air ratios with a constant excess air coefficient.

Distribution of solids concentration and temperature within combustion chamber of SC-OTU CFB boiler

Błaszczuk A., Komorowski M., Nowak W.

Prace Naukowe Politechniki Warszawskiej. Konferencje

2011

z. 27

7--15

One of the main parameters influenced on the heat transfer in the circulating fluidized bed boiler is distribution of bed’s solids concentration within the contour of boiler’s combustion chamber. In this paper analysis of influence of fluidized bed’s solids concentration on the vertical temperature proﬁle in the combustion chamber of SC-OTU CFB boiler is carried out. Investigations were conducted with different loads of generator’s nominal power i.e. 100%, 80%, 60% and 40%. Solids concentration was specified on the base of pressure measurement within boiler’s combustion chamber using pressure sensors. Pressure measurements were carried out in 11 measuring ports situated on the front wall of combustion chamber. Vertical temperature proﬁle was achieved on the base of temperature measurements at different furnace elevations. Combustion process was carried out with different primary to secondary air ratio and constant excess air coefficient.