Abstract: The traditional fuel atomization device does not work well, the burning speed is low, the flame stiffness is low, the diesel burnout rate is not high, the firebricks are damaged, and the diesel consumption is large. The new fuel spraying device for the coal injection pipe adopts a two-channel dual-channel structure of oil and gas. The two channels of oil and gas are fully mixed in the nozzle atomization cavity of the oil gun, so that the fuel produces a fine and uniform liquid mist. The atomization effect is good, and the range is longer than traditional oil. The gun saves fuel consumption by more than 60%.