Operation control of circulating fluidized bed boilers
Artikel i vetenskaplig tidskrift, 1996

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.

heat balance model

bed temperature

boiler operation control

: circulating fluidized bed boilers

Författare

Martin Gierse

Institutionen för energiomvandling

Bo G Leckner

Institutionen för energiomvandling

International Journal of Energy Research

0363-907X (ISSN)

Vol. 20 839-851

Ämneskategorier

Energiteknik

Styrkeområden

Energi

Infrastruktur

Chalmers kraftcentral