ZLG vibration fluidized bed drying process (I)

Vibrated fluidized bed dryer the vibrated fluidized bed dryer is a new type of equipment developed and applied gradually in the past decade It is becoming the main type of drying equipment The vibrating fluidized bed dryer is a new type of dryer which applies the special vibration source to the ordinary fluidized bed dryer The vibration source can be divided into motor method, electromagnetic induction method, crankshaft or eccentric method, pneumatic or hydraulic method, etc Through a large number of previous research and engineering practice, it has been proved that the vibration fluidized bed dryer overcomes the shortcomings of ordinary fluidized bed dryer, such as high speed, low surface heat transfer coefficient, and the possibility of channeling and surging It greatly strengthens the heat and mass transfer rate of drying operation, so as to achieve the ideal drying effect 1、 Because vibration drying equipment uses mechanical vibration force, it has the following characteristics: 1 There is little particle damage 2 At the same time, it can reach the goal of drying and cooling 3 Dehydration and classification can be carried out in the same equipment 4 A wide range of materials can be treated, from powder to particle 5 Because the air volume is small, the thermal efficiency is high and the coefficient of thermal capacity is large 2、 The vibrated fluidized bed dryer is a very successful modified fluidized bed The bed can vibrate vertically, horizontally or at a fixed angle with the bed axis The waveform can be sinusoidal or other forms Compared with the general fluidized bed dryer, the vibrating fluidized bed dryer has the following advantages: 1 It is easy to control the amplitude and vibration frequency, accurately control the residence time of particles in the bed, and obtain the piston flow pattern during continuous operation 2 Vibration promotes fluidization, reduces air demand, reduces particle entrainment, and also reduces or cancels capture equipment 3 For particles with large moisture content, which are easy to unite and bond, vibration is helpful to disperse them, so as to improve fluidization and drying effect 4 It can deal with the materials more gently, so that the particles are less broken and worn