ZLG vibrating fluidized bed drying process (1)

Introduction to vibrating fluidized bed dryer

Vibrating fluidized bed drying gold is a new type of equipment that has been gradually developed and expanded in the past decade. It is increasingly becoming the main model in drying equipment. A vibrating fluidized bed dryer is a new type of drying device that applies a specific vibration source to a conventional fluidized bed dryer. This vibration source can be divided into electric motor method, electromagnetic induction method, crankshaft or eccentric wheel method, pneumatic or hydraulic method according to its excitation method. Through the extensive research and engineering practice of the predecessors, the vibrating fluidized bed dryer overcomes the shortcomings of the common fluidized bed dryer, such as high speed, low surface heat transfer coefficient and possible channel flow and turbulence. To a certain extent, the heat transfer and mass transfer rate of the drying operation are enhanced to achieve the desired drying effect.

First, because the vibration drying equipment uses mechanical vibration force, it has the following characteristics:

1. There are very few particles destroyed.

2. The purpose of drying and cooling can be achieved while conveying the material.

3. Dehydration and grading can be carried out in the same equipment.

4, a wide range of materials can be processed, from powder to granules.

5. Because of the small air volume, the thermal efficiency is high and the heat capacity coefficient is large.

Second, the vibrating fluidized bed dryer is a very successful modified fluidized bed. The bed can be vibrated vertically, vibrated horizontally or at an easy angle to the axis of the bed, and the waveform can be sinusoidal or otherwise. Vibrating fluidized bed dryers have the following advantages over general fluidized bed drying:

1. It is relatively easy to control the amplitude and vibration frequency, and can accurately control the residence time of the particles in the bed. The piston flow pattern can be obtained during continuous operation.

2. The vibration promotes fluidization, which reduces the air requirement, thereby reducing the amount of entrainment of the particles, and also reducing or eliminating the trapping equipment.

3. For particles with high water content and easy to unite and bond, the vibration helps to disperse, thus improving the fluidization and drying effect.

4, the material can be treated more gently, so that the particles are less broken and worn

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