After putting unit no.1 into operation at Liaocheng Power plant

its maximal dispatching load was 600 MW

and minimal dispatching load was 360 MW. In the period of low load operation for the unit

the combustion stabilization performane to be worse. In the event of kinetic field in the furnace being slightly disturbed

degradation of combustion may occur

even leading to outfire in the furnace. For this

a conception of main guiding flame for the W-shaped flame has been put forward

and combustion debugging being carried out by using the main guiding flame technology

obtaining good result.