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

Author: Dingli     Date: 2020-01-15  

  The heat exchange in the drying equipment is mainly based on the two types of heat exchange: air flow and particles, tube wall and particles. The essence of the drying process is the dispersion process of water. It is carried out by external dispersion and internal dispersion. Outer diffusion is the process in which the water outside the particles is dispersed from the outside to the surrounding medium in the form of steam. Inner dispersion is the process in which water moves outside the particles.

spin flash dryer

  1. Rotary flash dryer adopts high-speed hot air flow tangent to enter the barrel, because the spiral movement of air flow in the barrel reduces the temperature of the medium around the particles, and increases the velocity and temperature of the medium, which greatly improves the external dispersion speed.

  2. The low-temperature airflow hits the particles or small wet materials located at the lower part of the cylinder at high speed. At the same time, the stirring of the stirring blades in the cylinder causes the particles to be broken, the particle size is reduced, and the length of the external capillary is also reduced, which strengthens the consequences of internal dispersion to reduce the resistance of internal dispersion. Most of these particles are repeatedly broken in the low temperature and high stirring intensity reciprocating motion of the lower part of the cylinder. Eliminating the agglomeration of the material is also an inefficient step to increase internal dispersion, and strengthens the evaporation of particulate water.

  For more details about spin flash dryer, you can consult online customer service or leave a message.

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