Conference article

Dynamic Model of a Bubbling Fluidized Bed Boiler

Yrjö Majanne
Tampere University of Technology, Institute of Automation and Control, Finland

Tuomas Kataja
Tampere University of Technology, Institute of Automation and Control, Finland

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Published in: The 48th Scandinavian Conference on Simulation and Modeling (SIMS 2007); 30-31 October; 2007; Göteborg (Särö)

Linköping Electronic Conference Proceedings 27:17, p. 140-149

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Published: 2007-12-21


ISSN: 1650-3686 (print), 1650-3740 (online)


A dynamic model for a high-volatile solid fuel fired bubbling fluidized bed boiler is presented. The model consist of an air-flue gas model which includes a furnace model describing combustion in a bubbling fluidized bed and a model for a water-steam circuit describing heat transfer from hot flue gases to water and steam. The versatile furnace model takes account of quality parameters of fuel so that the effects of moisture; particle size; heat value; and the amount of volatiles can be simulated. The model is based on the first principles mass; energy; and momentum balances. Results from validation of the model against a bubbling fluidized bed boiler process data are presented. The validation showed that the model can describe the dynamics and static gains of the process very well.


Dynamic boiler model; bubbling fluidized bed combustion


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