Rotary Vacuum Paddle Dryer requires less maintenance and has the feature that to remove the condensate formed by steam heating in the hollow shaft, online continuous pumping is incorporated which is unique to this machine. The Dryer has longer functional life and has a large area of dust collecting system. The Dryer consist of dust collector, condenser, receiver and vacuum pump. The Dryer ensures efficient performance with high heat transfer rates. The Dryer is used for reaction, crystallization and extraction operations in addition to the primary function of drying. The Dryer is designed to take temperature stresses during vacuum drying and low power consumption by helical gear box floating bearing design to combat temperature stresses. The Rotary Vacuum Paddle Dryer is a closed system in which hot water, steam or hot fluid is used as a heating medium in the jacket, in the hollow paddle and in the hollow shaft.