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Working Principle:
It adoptsan advanced pulsed heat transfer method, changing the relative velocity between material and heat medium so as to enhance the heat & mass transfer process. The material first enters a smaller pipe, where the air current flows at a high velocity and causes the granules to move at an accelerated speed. At the end of the accelerated movement, the pipe expands suddenly. Because of inertia, the velocity of granules is greater than that of the air current. In the moving process, because of the air current resistance, the velocity of granules decreases. Then the pipe diameter is reduced suddenly, the granules are speeded ...
Working Principle:
Spray drying involves the atomization of droplets in a spray from a liquid feedstock and the droplets contact with hot air in a drying chamber. The sprays are produced by two-fluid nozzle atomizers. Evaporation of moisture from the droplets and formation of dry powder are proceededon controlled temperature and airflow conditions. Powder is discharged from the drying chamber and mostly is collected by the cyclone separator. Characteristics: 1. Operating conditions and dryer design are determined according to the drying characteristics of the products and powder specifications. ...
Working Principle:
Preheated air is passed into product layer under controlled velocity after being uniformed by the distributor so asto create an fluidized state. The raw material is fed into the bed. Dehydration process can take place on at very good heat & mass transfer condition. The exhaust air is cleaned by cyclone. Material to be dried: This dryer is mainly used for drying of powder or particle materials in pharmaceutical, food and chemical industry. The examples of materials dried in such dryers are powdered coal, fine ore, sand, ammonium sulfate, ammonium chloride, anhydrous sodium sulfite, ta...
Working Principle:
Liquid material is atomized through a special pressure nozzle with a high-pressure pump. Hot air enters the dryer after being adjusted by an air distributor. The material and hot air is mixed in the dryer, rapidly carries on heat and mass transfer. Powder or granular products are produced in a very short time. Products with larger particles size are discharged form the bottom of the dryer, smaller particles enter the cyclone with hot air. The exhaust gas is discharged into the air after dust removal in a scrubber. The dryers can be divided into high, middle and low pressure spray dryers according to different pressures of atomi...
Working Principle:
Wet material is atomized into superfine drops by means of a high-speed rotary atomizer placed in the ceiling air disperser. Rapid heat and mass transfer takes place in the dryer between the material and the hot air. Powder products are produced in a very short time. The particle size of the powder produced is controlled through change of atomizer rotating speed. Most products can be collected from the bottom of the drying chamber. Characteristics: The production process is simple and continuous. It is suitable for the continuous drying of solution, suspending liquid, emulsion and pasty m...
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