The developed centrifugal atomizer is famous for its high precision, high speed and energy saving. It can not only achieve uniform and controllable particle size atomization, but also the maximum single machine processing capacity has reached 200t/h. This provides a powerful means of atomization for the development of LPG high-speed centrifugal spray dryer. The centrifugal atomizer adopts belt drive and improves the lubrication system, which also achieves good results. These achievements are one of the important reasons for the rapid growth of the application of centrifugal atomization.
The ball-milled slurry is further stirred evenly in the stirring tank and heated to above 35°C, and then pressure is applied to the stirring tank. Under the action of the pressure, the slurry is sent to the atomizer, and is sprayed After melting, it is sprayed into the tower body from the lower part of the tower body. The N2 heated by the oil-gas heat exchanger is sent to the gas distributor at the top of the tower by the blower. After passing through the gas distributor, the N2 enters the tower evenly and in a whirlwind shape, and the atomized slurry is dried and granulated. After the pellets come into contact with the hot gas, the liquid on the surface evaporates quickly, and the gas inside migrates to the surface during the subsequent drying process and is taken away by the hot gas. The dried material particles fall to the bottom of the tower body, and are recovered in gaps through a pair of disc valves.
LPG high-speed centrifugal spray dryer is a drying equipment for processing solutions, suspensions or slurry materials. It uses the method of spraying to make the material become mist and disperse in the hot air. The material and the hot air contact each other in the way of co-current, counter-current or mixed flow, so that the water evaporates quickly to achieve the purpose of drying. With this drying method, unit operations such as concentration, filtration, and crushing can be omitted, and granular products of 30 to 500 μm can be obtained. And the drying time is very short, the general drying time is 5~30s. It is suitable for drying highly heat-sensitive materials and easily dispersed materials in the process of liquid concentration. The product has good fluidity and instant solubility.
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