• 1.1.Product moisture content is too high

    Exhaust air temperature is the main factor affecting the moisture content of finished products, so the reason for the high moisture content of products is generally the exhaust air temperature is too low. And the exhaust air temperature can be adjusted by the amount of feed. Therefore, the corresponding measures are appropriate to reduce the amount of feed, in order to improve the exhaust temperature.

  • 2.2.The product powder is too fine, the phenomenon of running powder is serious, and the product yield is low

    Product particles too fine will affect its solubility, impact adjustment performance. The reason is that the solid content is too low or the feed amount is too small. The remedial measures are to increase the solid content of the feed liquid, increase the feed quantity and increase the air inlet temperature. The loss of running powder greatly affects the yield of finished products. The general reason is the poor separation effect of cyclone separator. If this happens, check whether the cyclone separator is deformed by percussion or collision; Improve the air tightness of the inlet and outlet of cyclone separator, check whether the inner wall and outlet of spray dryer are clogged with accumulated materials. Of course, the separation efficiency is also related to the specific gravity of the powder and the size of the particle size.

  • 3.3.Noise or vibration when centrifugal nozzle is running

    Mainly due to spray dryer nozzle cleaning and maintenance caused by improper spray tray with residual substances or spindle bending and deformation, may also be centrifugal disk dynamic balance is not good. Solution: check whether there are residual substances in the tray of the spray dryer, and if there are, clean it in time; If the main shaft of spray dryer is abnormal, the dynamic balance of centrifugal disk should be adjusted or replaced.

  • 4.4.Wall adhesion is serious

    The main performance is the spray dryer drying room there are sticky wet powder. The reason is that the quantity of feed is too large to fully evaporate. Insufficient heating of drying chamber before spraying; When the spray starts, the discharge rate is adjusted too much; The added feed liquid is unstable. For the different causes of the above problems, the following measures can be taken successively: Appropriately reduce the quantity of feed; Appropriately raise the inlet and outlet temperature of hot air; In the beginning of the spray, the flow should be small, gradually increase, adjust until appropriate; Check whether the pipe is blocked, adjust the solid content of the material and ensure the fluidity of the material.

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