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1 Journal of Power Technologies

1 2012

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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.