With superheated steam dryer
     Superheated steam drying is particularly suitable for drying explosive fire and oxidation of materials, therefore, South Africa in 1985 established the first industrial use of superheated steam dryer for drying activated carbon particles, the production rate of 2000kg / h. Activated carbon water from 50% down to 2%, the use of superheated steam drying is a major cause of carbon under high temperature conditions because it is easy to fire, another reason is exhaust steam can be reused in order to achieve energy-saving purposes. First carbon pulverized and mixed with the binder, and then the pellets into cylindrical granules with a diameter of 3-8mm, length twice the diameter, the activated carbon particles with a belt fed dryer, in the machine room to answer drying with superheated steam, it is actually a fluidized bed dryer, machine width 0.8m, length 4.8m, first carbon bake to 8% water, and then into the vacuum chamber, and finally dried to a moisture content of 2%.
    Dryer started working with hot air, when the relative humidity of the air circulation reaches saturation, (ie full of steam), began to pass into steam, three fans can be independently adjusted to regulate the principle that feed side scenery large, the discharge end of the material can be smaller than the dry air volume - more, the device contains - a oil furnace. Oil furnace for heating flue gas generated steam into the dryer steam temperature of 300 ℃, exhaust gas temperature of 156 ℃, the sets of equipment have been put into use in 1985, the cost of the device lower than the hot air drying apparatus 40 %, with hot air drying, the temperature is limited to below 12 ℃, because the activated carbon particles easily catch fire.

 

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