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Closed loop centrifugal spray dryer product introduction:
The closed loop centrifugal spray dryer is a special equipment for drying organic solvent-based slurry. The unit is made of nitrogen (or other inert gas) as a drying cycle gas. The drying process can prevent oxidation and the organic solvent can be recycled. Closed-circulation spray dryer is generally used for drying powder of organic solvent such as ethanol, acetone and hexane. The equipment adopts explosion-proof design and the drying process is safe and environmentally friendly.
The main purpose of closed loop centrifugal spray dryer:
Closed-circuit circulating centrifugal spray dryer, the equipment is suitable for preventing oxidation during the drying process, and the powder consistency requirement after drying. Such as pharmaceutical, chemical, food, lithium battery materials and other industry powder. A powder having an average particle diameter of 10 to 100 μm can be obtained by centrifugal spraying. Of course, the entire drying process is carried out under nitrogen protection, and the organic solvent can be recovered at the same time.
Closed loop centrifugal spray dryer works:
The closed loop centrifugal spray dryer system works in a closed environment, the drying medium is an inert gas, generally N2, suitable for the drying of toxic materials in organic solvents or drying of materials susceptible to oxidation during drying; The inert gas is used as the circulating gas to protect the dried material. The circulating gas undergoes the process of carrying moisture and dehumidification, and the medium can be reused; the nitrogen is heated by the heater and then enters the drying tower, and the liquid material is sent to the centrifugal nozzle through the screw pump. Wherein, the liquid is atomized into droplets by a high-speed atomizer, and the heat-exchange process is completed in the drying tower, and the dried powdery material is discharged from the bottom of the tower, and the evaporated organic solvent gas is under the pressure of the negative pressure of the fan. The organic solvent gas saturated by the dust trapped in the gas through the cyclone and the spray tower is condensed into a liquid discharge condenser through a condenser, and the non-condensable gas medium is continuously heated and then recirculated as a dry carrier in the system. . The conventional ordinary centrifugal spray drying is to achieve the purpose of moisture removal by continuous sending and exhausting, which is also a clear difference between the explosion-proof closed centrifugal spray drying equipment and the ordinary centrifugal spray drying equipment; the drying medium in the drying system is N2 The internal is a positive pressure operation, maintaining a certain positive pressure value. If the internal pressure drops, the pressure transmitter automatically controls the N2 intake to ensure the system pressure balance.
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