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2023
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Factors affecting the evaporative strength of a dryer
The output calculation of the dryer is inseparable from the determination of the evaporation strength of the dryer, and the evaporation strength of the dryer is related to a variety of factors, there is no formula that can be used for the time being to calculate the evaporation strength of the dryer of each manufacturer is not quite the same way to determine the evaporation strength of the dryer. As each manufacturer's dryer structure is basically determined, so the main factors affecting other dryers are materials and drying media.
The output calculation of the dryer is inseparable from the determination of the evaporation strength of the dryer, and the evaporation strength of the dryer is related to a variety of factors, there is no formula that can be used for the time being to calculate the evaporation strength of the dryer of each manufacturer is not quite the same way to determine the evaporation strength of the dryer. As each manufacturer's dryer structure is basically determined, so the main factors affecting other dryers are materials and drying media.
1, the type of material: different materials on the drying effect of the dryer has a great impact, such as in the same conditions, respectively, drying clay and slag, measured slag drying evaporation intensity than the clay to be larger than 3-8kg of water / (m3-h), this is because of the viscosity of the clay is relatively large, not easy to dispersion, so the evaporation intensity of small.
2, the initial moisture of the material: the greater the initial moisture of the material, the greater the evaporation intensity, the initial moisture of the material on the evaporation intensity of the impact is very obvious, such as in the case of other conditions are the same, the slag in the initial moisture of 25% than in the initial moisture of 10% to be greater than the 8-15kg of water / (m3-h), this is because of the greater the moisture of the material, the more water is easy to contact with the high-temperature drying medium, the more likely evaporation, so the material drying should be accurately measured when the Drying of materials to accurately determine the initial moisture.
3, the final moisture of the material: the greater the final moisture of the material, the greater the evaporation intensity, the final moisture of the material on the evaporation intensity of the impact is also very obvious, such as in the case of other conditions are the same, slag in the final moisture of 10% than in the end of the moisture of 1% when the evaporation intensity to be greater than the 5-10kg of water / (m3-h), this is because of the material's moisture with the drying, the less water is less likely to be in contact with high-temperature media, the final moisture size should be combined with the dryer to dry the material, and the dryer should be used in the dryer to dry the material. The final moisture size should be combined with the dryer before and after the grinding or storage system and the owner's requirements to determine.
4, the size of the material: the smaller the size of the material, the greater the intensity of evaporation, dryer redan the moisture of the material is mainly material attached to the water, the larger the particle size of the material, the more moisture exists in each grain of material. Drying medium in drying moisture, to first heat the material, and then the material and then heat transfer in the moisture to make it evaporate away from the inside of the material, so the smaller the material, the drying medium is very easy to heat the material, the material is also very easy to heat the moisture to make it evaporate, the water vapor is also more likely to escape from the inside of the object.
5, the temperature of the drying medium: the higher the temperature of the drying medium, the greater the evaporation intensity, such as slag in the drying medium at an initial temperature of 800 ° C than in the 350 ° C when the evaporation intensity to be greater than 10-30 kg of water / (m3 - h), this is because the higher the temperature, the higher the convective efficiency, high-temperature medium is easier to heat transfer in the material. Generally speaking, the dryer with a combustion furnace, so as to produce high-temperature medium heating. Low-temperature media heating is also developing rapidly, the source is usually the rotary kiln and preheater exhaust gas, the heat can be fully utilized, is also very consistent with the development of sustainable energy.
Dryer evaporation intensity is determined by the dryer selection of the big difficulty, or big or small on the production have a great impact, Henan Zheng mining machine has dozens of dryer design and manufacturing, dryer has a wealth of experience in selection, can meet customer needs.
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