In the daily production process, necessary preparations should be carried out before starting the spray fluidization granulation drying equipment. First, check whether the joints of the bearing and sealing parts of each device are loose, and the lubricating oil condition of each spray fluidized granulation dryer component and whether each water, wind, slurry valve port, etc. are in the desired position. Then turn on the power to check whether the voltage and the meter are normal. Finally, check the amount and concentration of the slurry in the slurry mixing tank. If there is any problem, it should be eliminated in time.
Then, the spray fluidization granulation drying device blower and the exhaust fan are sequentially turned on, and then the heating switch is turned on to start the temperature rise. When the outlet temperature reaches the set temperature (generally around 130 °C), start the material pump and dust removal system. When the pump pressure reaches 2 MPa, the spray gun is turned on to start granulation. After the spray fluidized granulation dryer is operated, the atomization condition and the working condition of the material pump should be observed in time. If the gun is blocked, the nozzle should be cleaned or replaced immediately.
After the spray fluidization granulation drying equipment is in normal operation, it should also regularly check the materials, check the operation of each system regularly, record the process parameters, and pay attention to clean the vibration filter screen.
At the end of the granulation of the spray fluidized granulation drying equipment, the heating device should be shut down first to stop the operation of the gas engine. Then close the gun valve, replace the gun, unscrew the nozzle and rinse. When the inlet temperature is reduced below 100 °C, the operation of the blower and the blower can be stopped. Then clean the remaining materials in the drying tower and the precipitator, turn off the dust collector and the air hammer, and finally turn off the main power supply to complete the production operation.
In the event of an emergency, the spray fluidization granulation drying equipment must be shut down immediately. The blower and feed pump should be shut down first. If there is a sudden power outage, the gas engine should be pulled out to cool the tower naturally, then the drain valve is opened, the slurry in the slurry pipeline is drained, and the spray fluidization granulation drying equipment is cleaned.