The paddle dryer is a low-speed stirring dryer with a stirring paddle inside the equipment, so that the wet material is fully contacted with the heat carrier and the hot surface under the stirring of the paddle, so as to achieve the purpose of drying. The structure is generally horizontal. , two or four axes. The paddle dryer is divided into hot air type and conduction type.
Indirect heat transfer, conducting heat through a cylindrical shell, this heat treatment method is well suited for solvent evaporation processes where a small countercurrent flow of inert purge gas increases the mass transfer rate.
Direct Heat Transfer: Thermal treatment that utilizes a large amount of gas to transfer heat by convection. Direct heat transfer uses co-current material and gas, and the two components are separated downstream of a cyclone or bag filter.
A combination of indirect and direct heat transfer can be used to optimize energy efficiency while reducing material temperature.
Paddle drying can be divided into several sections, each with its own temperature. Direct air is used to strip the solvent in the dryer, and the wet product is dispersed and reduced in size at high rotational speeds, which results in increased product surface area, instantaneous evaporation of water, and drying and fine product through the outlet valve.
The paddle dryer is a kind of low-speed stirring dryer with a stirring paddle inside the equipment, so that the wet material is fully contacted with the heat carrier and the hot surface under the stirring of the paddle, so as to achieve the purpose of drying. The structure is generally horizontal. , two or four axes.
