In view of the dificult problem to know well the relstionship between operation load of a CFB boiler and it’s bed temperature as well as the thickness of fuel-layer

an experimental study on CFB boiler of two types has been carried out. The results of study show there is a linear relationship between the load of CFB boiler and it’s bed temperature

as well as it’s thickness of fuel-layer in operation. Through regression analysis

a corresponding relational expression has been obtained. From this expression

the bed temperature and the fuel-layer thickness in operation under corresponding boiler load can be achieved

providing a better guidance for boiler operation.