Pressure spray dryer is a device that can complete drying and granulation at the same time. According to the process requirements, the pressure, flow rate of the liquid pump and the size of the injection hole can be adjusted to obtain the required spherical particles according to a certain size ratio. The working process is that the material liquid is input through the diaphragm pump at high pressure, spraying mist-like droplets, and then falling in parallel with the hot air, most of the powder particles are collected by the discharge port at the bottom of the tower, and the exhaust gas and its tiny powder are separated by the cyclone separator The exhaust gas is discharged by the exhaust fan, and the powder is collected by the pollination cylinder set at the lower end of the cyclone. The outlet of the fan can also be equipped with a secondary dust removal device, and the recovery rate is above 96-98%. The materials of the tower body, pipeline and separator which are in contact with the materials are all made of SUS304.
There is sufficient thermal insulation layer between the inside of the tower and the outer shell. The filling material is ultra-fine glass wool. The tower is equipped with observation doors, sight glasses, light sources and control instruments, which are controlled and displayed by the electrical control console. The heat source device adopts steam heating or electric heater, which has the advantages of easy operation, fast start-up, compact structure, clean and clean hot air and so on. In addition, a control and adjustment device for electric heaters is installed in the electrical control cabinet to make the inlet temperature stepless adjustment. For areas lacking electricity, steam heating or coal-fired, oil-fired hot-blast stoves, etc. can be used to partially or completely replace the electric heating device.
Shanghai Bilang spray dryer has a fast drying speed. The surface area of ​​the material liquid is greatly increased after being atomized. In the hot air flow, 95% -98% of the water can be evaporated in an instant. The drying time is only a few seconds, which is especially suitable for heat sensitivity. Drying of materials.
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 and control are convenient. For liquids with a moisture content of 40-60% (up to 90% for special materials) can be dried into powder products at a time, without crushing and screening after drying, reducing the production process and improving product purity. The particle size, bulk density, and moisture of the product can be adjusted within a certain range by changing the operating conditions. It is convenient to control and manage.
Shanghai Bilang's small spray dryer is suitable for the production of micro-particulate powder in universities, research institutes and food, pharmaceutical and chemical enterprise laboratories. It has a wide applicability to all solutions such as emulsions and suspensions, and is suitable for drying heat-sensitive substances. Such as biological products, biological pesticides, enzyme preparations, etc. Since the sprayed material is only subjected to high temperature and instantaneous heating when sprayed into a mist, these active materials maintain their active ingredients unchanged after drying.
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