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nameThe mechanism of rotary flash evaporation dryer in the drying process of powder materials |
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categoryFlash evaporation dryer |
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detailed description： |
The rotary flash dryer produced by Changzhou Hubang Drying Equipment Co., Ltd. is a new type of drying equipment developed by our factory based on the introduction and absorption of advanced foreign technology. The device has now fully demonstrated its superior performance: small equipment, high output, low energy consumption, pollution-free environment, and adjustable moisture content and particle size of the product. In addition, the rotary flash dryer can dehydrate and dry various materials. It has been widely used in various fields such as non-metallic minerals, chemical industry, building materials, medicine, metallurgy, pigments, dyes, etc. It is an ideal equipment for powder drying operations in China and even the world.
The mechanism of rotary flash evaporation dryer in the drying process of powder materials
After the water containing powder material enters the dryer, the hot air flow first transfers heat to the surface of the fine particles, and the water immediately evaporates and diffuses to the outside. The evaporation of surface moisture causes a difference in moisture between the surface and interior of the particles. Moisture will continuously diffuse from the interior of the particles to the surface, and then evaporate from the surface to the outside. This process repeats in a loop until the entire particle is dried. The drying of materials can be divided into the "accelerated drying stage", which means that the materials are heated to the wet bulb temperature of the drying medium in a short period of time, and the water evaporates quickly. This stage is relatively short, and the heat absorbed by the particles is equal to the heat newly consumed by evaporating water, reaching equilibrium. After this stage, it enters the constant speed drying stage. At this stage, the moisture inside the particles will continuously replenish to the surface of the particles, and the drying speed and surface humidity of the particles will remain unchanged. Increasing the flow rate of the drying gas can also accelerate the drying speed. After the end of this stage, the system enters the "slow drying stage". After the particle moisture is dried to a certain extent, due to the continuous increase in total moisturereduceThe drying speed gradually decreases and finally reaches the "equilibrium stage", at which the surface water of the particles evaporates and absorbs moisture to reach equilibrium. The drying speed is zero, and the drying process ends.
hubangdry@126.com
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