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Operation control of circulating fluidized bed boilers

Martin Gierse (Institutionen för energiomvandling) ; Bo Leckner (Institutionen för energiomvandling)
International Journal of Energy Research (0363-907X). Vol. 20 (1996), 10, p. 839-851.
[Artikel, refereegranskad vetenskaplig]

The heat balance of different circulating fluidized bed boiler designs is investigated for variations in input parameters, such as specific flue-gas amount and ash content of the fuel. A simple model and a corresponding diagram are developed to describe the boiler behaviour when conditions deviate from the nominal ones. The model shows how the furnace temperature is influenced in different ways in different boiler designs by changes of furnace heat transfer and of the mass flow of particles and flue gases. The model results are verified by measurements in one type of boiler. Finally, it is shown how the desired stable furnace temperature and stable heat flux distribution are in conflict during variations of the input parameters. As a consequence, a two-dimensional boiler control strategy is suggested.

Nyckelord: : circulating fluidized bed boilers; boiler operation control; heat balance model; bed temperature

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Denna post skapades 2016-06-23. Senast ändrad 2016-08-15.
CPL Pubid: 238235


Institutioner (Chalmers)

Institutionen för energiomvandling (1900-2003)


Termisk energiteknik

Chalmers infrastruktur

Chalmers Kraftcentral (CK)