How to enhance the evaporation of water in rotary flash dryer?

The heat exchange in boring equipment mainly consists of two kinds of heat exchange: air flow and particles, cylinder wall and particles. The essence of boring process is water dispersion process. It's done by external dispersion and internal dispersion. External diffusion is the process of water outside the particle in the form of steam from the outside to the surrounding medium. Internal dispersion is the process by which water moves around the outside of the particle.

1, rotary flash dryer adopts high-speed hot gas tangential deviation into the cylinder, because the spiral activity of the air flow in the cylinder, reduce the temperature of the medium around the particles, and increase the velocity and temperature of the medium, which greatly improves the rate of external dispersion.

2. The low temperature air strikes the particles or small wet materials located in the lower part of the cylinder at high speed. At the same time, the stirring effect of the stirring blade in the cylinder makes the particles broken, the particle size decreases, and the length of the external capillary is also reduced, which strengthens the consequences of internal dispersion and lowers the resistance of internal dispersion. Most of these particles are broken repeatedly in the cycle of low temperature and high stirring intensity in the lower part of the cylinder. To eliminate the material caking, but also to improve the pace of internal dispersion, strengthen the evaporation of water particles.

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