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New equipment device of spin flash dryer

Information sources:本站 | Release date: 2020-07-30 10:15:06 | Browse volume:7916

Summary:

The new type of rotary flash dryer adopts a variety of advanced devices. For example, a variety of feeding devices are used to make the feeding continuous and stable, and the feeding process will not cause bridging. The bottom of the flash dryer uses …

  The new type of rotary flash dryer adopts a variety of advanced devices. For example, a variety of feeding devices are used to make the feeding continuous and stable, and the feeding process will not cause bridging. The bottom of the flash dryer uses a special cooling device to avoid materials at the bottom. Wall sticking and deterioration in high-temperature areas; special air pressure sealing devices and bearing cooling devices are used to effectively extend the service life of the transmission part; special air distribution devices are used to reduce equipment resistance and effectively provide the dryer's processing air volume; The drying chamber is equipped with a grading ring and a swirling sheet, which can adjust the fineness of the material and the final moisture; it adopts a stirring and crushing device to produce a strong shearing, floating and rotating effect on the material; it adopts an air filter, a cyclone separator, and a cloth bag to remove dust It can effectively remove dust and avoid environmental and material pollution. The equipment has strong mass and heat transfer, high production intensity, short drying time and short material residence time.

  The bottom of the flash dryer is equipped with an inverted cone structure, so that the dry gas circulation section gradually expands from bottom to top. The bottom air flow is relatively large, and the upper air flow is relatively small, so as to ensure that the large particles in the lower part are in a fluidized state while the upper part Small particles are also in a fluidized state, and make the hot air rotate along the vertebral body, increase the bottom wind speed, reduce the length of the cantilever part of the stirring shaft, and increase the safety and reliability of operation; the bearing can be placed outside the machine to effectively prevent the bearing from being Work in high temperature area, thereby prolonging the service life of the bearing. According to the production test, when the outlet temperature of the drying medium is 60°C, the moisture content of the anthranilic acid product is less than 0.5. Therefore, the outlet temperature should be 60-65°C. A scraper is set on the mixing gear to peel off the material sticking to the wall of the machine in time to avoid sticking to the wall. Increase the outlet temperature, the product moisture will drop, the energy consumption will rise, and the outlet temperature will be too high, and some products will sublime. In addition, the bag of the pulse bag filter is also easy to damage.

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