A spray dryer is a device that can simultaneously perform drying and granulation. According to the process requirements, the pressure, flow rate and orifice size of the liquid pump can be adjusted to obtain the desired spherical particles in a certain proportion. The working process is that the liquid feeds through the high pressure input of the diaphragm pump, and sprays the mist droplets, and then flows down with the hot air. Most of the powder particles are collected by the bottom discharge port, and the exhaust gas and its fine powder are separated by the cyclone separator. The exhaust gas is discharged by the exhaust fan. The powder is collected by the pollinator located at the lower end of the cyclone. The fan outlet can also be equipped with a secondary dust removal device, and the recovery rate is above 96-98%. The material of the tower body, the pipe and the separator which are in contact with the material are all made of SUS304.
There is sufficient insulation between the inside of the tower body and the outer casing. The filling material is ultra-fine glass wool. The tower body is provided with an observation door, a sight glass, a light source and a control instrument, and is controlled and displayed by an electric control console. The heat source device adopts steam heating or electric heater, and has the advantages of convenient operation, quick start, compact structure, clean and clean hot air and the like. In addition, a control and adjustment device for the electric heater is installed in the electric control cabinet to make the inlet temperature steplessly adjusted. For the power shortage area, steam heating or coal burning, fuel hot air furnace, etc. may be used to partially or completely replace the electric heating device.
Shanghai Qiaoyue spray dryer has a fast drying speed, and the surface area of ​​the liquid is greatly increased after atomization. In the hot air flow, 95%-98% of the water can be evaporated instantaneously, and the drying time is only a few seconds, which is especially suitable for heat sensitivity. Drying of the material.
The product has good uniformity, fluidity and solubility, and the product has high purity and good quality. The production process is simplified and the operation control is convenient. For liquids with a moisture content of 40-60% (up to 90% of special materials), the products can be dried into powdered products at one time. After drying, no pulverization and screening are required, which reduces the production process and improves the purity of the products. The particle size, bulk density and moisture of the product can be adjusted within a certain range by changing the operating conditions, and the control and management are very convenient.
Shanghai Qiaoyue's small spray dryer is suitable for the production of micro-particle powder in universities, research institutes and food and pharmaceutical companies. It has wide applicability to all solutions such as emulsions and suspensions. It is suitable for drying sensitive heat sensitive materials. Such as biological products, biological pesticides, enzyme preparations and so on. Since the materials ejected are only subjected to high temperatures and are instantaneously heated when sprayed, these active materials maintain their active ingredients after drying.
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