High efficiency closed cycle spray dryer

High efficiency closed cycle spray dryer：

The closed cycle spray drying system works in a closed environment. The drying medium is inert gas, usually N2, which is suitable for drying materials containing toxic gas or materials prone to oxidation during the drying process; The system uses inert gas as the circulating gas, which has a protective effect on dry materials. The circulating gas undergoes processes of moisture loading and dehumidification, and the medium can be reused; After being heated by the heater, nitrogen enters the drying tower, and the liquid material is transported to the centrifugal nozzle by the screw pump. The liquid is atomized into droplets by the high-speed circulating atomizer, and the heat and mass exchange process is completed in the drying tower. The powdered material after drying is discharged from the bottom of the tower. The evaporated organic solvent gas, under the negative pressure of the fan, condenses the dust trapped in the gas through the cyclone separator and spray tower dust removal, and the saturated organic solvent gas is condensed into liquid and discharged from the condenser. The non condensable gas medium is continuously heated and reused as a drying carrier in the system. The conventional conventional centrifugal spray drying achieves the purpose of moisture removal through continuous air supply and exhaust, which is also an obvious difference between explosion-proof closed centrifugal spray drying equipment and conventional centrifugal spray drying equipment; The drying medium in the drying system is N2, and the internal operation is under positive pressure to maintain a certain positive pressure value. If the internal pressure drops, the pressure transmitter will automatically control the N2 inlet to ensure system pressure balance.

High efficiency closed cycle spray dryer：

Working principle: Firstly, heated nitrogen gas is filled into the drying tower, and the dried liquid material is sent to the centrifugal nozzle through infusion. The liquid material is atomized into small droplets by a high-speed rotating centrifugal atomizer, and the droplets undergo sufficient heat exchange with hot nitrogen gas in the drying tower. The liquid part of the material is instantly evaporated, and the solid part forms a powder material that settles at the bottom of the tower. Finally, the dried powder material is discharged from the bottom of the tower. Among them, the evaporated organic solvent gas is subjected to dust removal treatment by devices such as cyclone separator and bag filter under the action of the fan, and then the saturated organic solvent gas after dust removal is condensed into liquid and discharged from the condenser. During this process, the inert gas used as a drying medium is continuously heated and reused as a drying carrier within the system.

The explosion-proof closed circulation centrifugal spray drying system works in a closed environment. The drying medium is inert gas such as nitrogen. The drying tower is operated under positive pressure. If the internal pressure drops, the pressure transmitter can automatically control the nitrogen inflow to ensure the system pressure balance. Using nitrogen as a circulating carrier has a protective effect on dry materials. Nitrogen and other circulating carriers play a role in carrying, removing, and circulating moisture, and their carrier media can be reused. However, conventional conventional centrifugal spray drying achieves the purpose of moisture removal through continuous air supply and exhaust, and its tower is controlled by negative pressure operation, which is also the obvious difference between explosion-proof closed centrifugal spray drying system and conventional centrifugal spray drying system. Therefore, the explosion-proof closed cycle centrifugal spray drying system is particularly suitable for drying organic solvent materials, toxic gas materials and materials prone to oxidation in the drying process.

Changzhou Xiangteng Drying Equipment Co., LtdSpecializing in the research and manufacturing of drying, mixing, granulation, crushing, conveying, screening and other equipment. Especially, it has advantages in mesh belt type, hollow paddle, disc type, rake type, fluidized bed, flash evaporation, airflow, spray, vacuum drying equipment, calcination, etc. Widely used in industries such as pharmaceuticals, chemicals, food, environmental protection, building materials, electronics, and feed.