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Spinning flash dryer four process design methods

Sources: | Release date: 2016-08-05 | Browsing volume:
Key word:Rotary flash dryer process
Rotary flash dryer new equipment using a variety of advanced equipment, such as the use of a variety of feeding device, so that continuous feed stability, feeding process will not produce bridging phenomenon; the bottom of the dryer with a special cooling device to avoid the material at the bottom of the high temperature zone The occurrence of sticky wall and metamorphism phenomenon; the use of special pneumatic seal and bearing cooling device, effectively extending the life of the transmission part; the use of special air distribution device, reducing equipment resistance, and effectively provide the dryer air volume; drying room Equipped with grading ring and cyclone film, you can adjust the fineness of the material and the final moisture; the use of mixing crushing device, the material has a strong shear, blowing, rotating role; the use of air filters, cyclone, bag filter , Effectively remove dust, avoid environmental and material pollution. The device mass and heat transfer, high production strength, drying time is short, material residence time is short. So today by the experienced equipment manufacturers in Changzhou area spin dryer to introduce the four big process design method!

First, determine the drying room
Rotary flash dryer to deal with part of the material evaporation intensity, volumetric heating method is the theoretical design of rotary flash dryer, but the most critical volume of this method is difficult to determine the heat coefficient, so the lack of operability. Evaporation intensity method is an indirect method of volumetric heating method, as long as there is a certain amount of experimental data can be calculated, is often used in industrial design methods. Evaporative intensity method is based on the evaporation of water and evaporation intensity of the calculation of the volume of the drying chamber, and then calculated according to the diameter and height of the effective height.

Second, the drying chamber diameter
Another method is to calculate the required air consumption through material balance and calorific value calculation, and then to determine the diameter of the dryer according to the air speed range.

Third, the height of the dryer and grading diameter
Hot air from the hot air distributor out of the tangential direction through the annular gap into the drying chamber, the drying chamber of the material under the action of hot air blowing and propeller driven spiral rotation up. The effect of gravity on the movement of smaller particles under centrifugal force is negligible.

Fourth, the application of spin flash dryer
Some rotating flash dryer operating conditions, the upper part of the drying chamber with a ring, its role is to make the larger particles or no drying material and qualified products, block in the drying chamber can effectively ensure the product size and moisture requirements. Replacement of different diameter grading ring to meet the product size requirements. Cone at the end of hot air with cold wind protection at the population, to prevent the material and high temperature air overheating metamorphic. Drying system is closed, but also in the micro-negative pressure operation, the dust is not leaked to protect the production environment, health and safety.

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Changzhou XunChi Drying Equipment Co., Ltd. specializes in five series of drying, mixing, granulating, grinding and sterilizing equipment. The products are widely used in the pharmaceutical, chemical, food, light industry and electronics industries.