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Methods of hot air control in spray drying equipment
Add time:2024-04-25 Click: 312

When the temperature of the hot air entering the dryer is constant, the lower the temperature of the hot air exiting the tower, the greater the temperature difference between the incoming and outgoing tower, and the greater the heat energy transferred by the hot air to the mud for drying equipment, so the higher the hot air utilization rate. However, the exhaust air temperature should not be too low. When it is lower than 75℃, the powder will be too wet, affecting normal drying.


It is equipped with a heat energy secondary utilization system, which minimizes the heat energy loss caused by moisture drainage, minimizes drying costs, and shortens the drying cycle. When the moisture content of the wood is less than 15%, all borers and insect eggs that are parasites in the wood can be killed after 6-8 hours of high-temperature dry steaming.


Control system and functions: System drying equipment is equipped with an adjustable combustion-supporting device in the combustion chamber. There is no adjustable control device at the beginning of the chimney. There is no adjustable spray steam device at the beginning of the air supply pipe. It is equipped with an automatic display of temperature, dry humidity Detector, through the above configuration, the operator can control and detect the temperature and temperature in the drying room according to the drying process requirements, and dry high-quality wood to the maximum limit.


After the ceramic slurry is spray-dried and pulverized, if the hot air coming out of the tower is directly discharged into the atmosphere, this heat loss will be considerable (about 10% to 20% of the energy consumption in the pulverizing process). When the production capacity is constant, the required hot air volume is reduced (that is, the heat taken away by the hot air when leaving the tower is reduced), which reduces the heat consumption of spray drying powder and improves the utilization rate and thermal efficiency of hot air. However, the temperature of the hot air entering the tower should not be too high (not exceeding 600°C). If the temperature is too high, the air distributor at the top of the tower will be burned out.


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