Directing against the problems of serious high temperature corrosion and high content of unburned combustibles in fly ash under low load of one wall-firing boiler

analysis had been carried out from aspects of cyclonic burner features and layout mode of the burners.It was believed that the main causes leading to serious high temperature corrosion and high content of unburned combustibles in fly ash under low load of the boiler was as follows:decreasing of the fuel coal quatily

burning under partial shortage of oxygen in the furnace

and bad suitability of the boiler equipment.Under condition in which the fuel coal quality can not be ensured

a feasible technical way for solving the above-mentioned problems is decreasing the cooling air amout for standby burners through retrofitting the burners' system.