Detailed explanation of the drying process of flash dryer

  The spin flash dryer is used to mix and crush the bulk wet material and ensure that the particles do not stay in the high temperature zone of the drying chamber for too long. Therefore, there should be a reasonable gap between the stirring blade, the bottom and the wall of the chamber, and the rotation speed of stirring should also be selected reasonably. There is a good sealing device between the stirring shaft and the bottom of the drying chamber. The rotary flash dryer classifier is a ring with holes, similar to an orifice flowmeter, but at an angle. The diameter and height of the hole depend on the distribution of the product particles. When the height is constant, the smaller the pore size, the finer the particle size of the product. The addition of a grading ring in the flash drying cylinder is very important to control the particle size of the product, which greatly improves the product qualification rate.

rotary flash dryer

  The drying process of the rotary flash dryer is fully enclosed, no impurities are mixed, the quality of the finished product is high, and the operating environment is good. At present, the rotary flash dryer has designed a variety of models according to different materials, and has formed a series of products, which are more and more widely used in chemical, pharmaceutical, light industry, food, mineral and other industries. The rotary flash dryer organically combines fluidization, swirling, spouting, smashing, and grading technologies. It is an optimized combination of fluidization, swirling, spouting and convection heat transfer technology. The equipment has a high technical content. It is suitable for drying paste, granular, filter cake and muddy materials.

  Rotary flash dryer products are of good quality, high efficiency, and energy saving. Drying, crushing, and screening can be completed in one device at one time, eliminating environmental pollution. At the bottom of the rotary flash dryer, the larger and wetter particle clusters are mechanically broken under the action of the agitator, and the particles with lower moisture content and smaller particle size are entrained by the rotating airflow to rise, and further dry during the ascent. Because the gas-solid two phases make rotating flow. The inertia of the solid phase is greater than that of the gas phase, and the relative velocity between the solid and gas phases is larger, which enhances the mass and heat transfer between the two phases. Therefore, the rotary flash dryer has high production intensity.

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