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Closed cycle spray drying device is a special equipment for drying of organic solvent. The unit use nitrogen (or other inert gas) as the dry-cycle gas, the material can prevent oxidation during drying process and the organic solvent can be recycled at the same time. The device is generally used as the powder drying for the organic solvent slurry of ethanol, acetone, hexane . the equipment The device is explosion proof and the drying process is safety and environmental protection.¡­¡­