The oil burner for waste incinerator is a device that injects oil and air into the incinerator in a certain proportion, at a certain speed and in a certain mixing mode to provide the heat required when the incinerator is started / stopped, and the auxiliary heat required when the calorific value of waste is lower than the lower limit of the design calorific value. The function of burner is to start ignition and stop boiler to control the reduction rate of furnace temperature; Auxiliary combustion when the calorific value of waste is too low to reach the specified furnace temperature; Drying after new furnace and repairing furnace wall refractory.

   When the calorific value of waste is lower than 8500kj / kg, the combustion air needs to be heated; When the calorific value of garbage is lower than 7500kj / kg, auxiliary burners are usually set to meet the requirements of flue gas residence time not less than 2S and slag thermal ignition reduction rate when the furnace temperature reaches 850 ℃. When the calorific value of garbage is greater than 8500kj / kg, no auxiliary burner can be set, and only temporary ignition burner can be set.

   The oil burner is mainly composed of oil atomizer and air regulator. The fuel oil is atomized into fine oil particles through the atomizer, sprayed into the furnace at a certain atomization angle, and mixed with the air flow with a certain shape velocity distribution sent through the air regulator. At present, compressed air, steam or mechanical centrifugal force are mostly used.

   The coordination of oil atomizer and air regulator shall enable most of the air required for combustion to be supplied from the flare root in time, and make the air distribution volume at all parts of the flare adapt to the flow density distribution of oil mist. At the same time, a certain amount of air shall be supplied to the tail of the flare to ensure the burnout of carbon black and coke particles. Low pressure air atomizing nozzle is mostly used as burner for waste incinerator, with air flow rate of about 80m / s and pressure head of 2 ~ 3kpa; Light diesel fuel, liquefied petroleum gas, natural gas and other gas fuels can also be used.