Polyethylene is a thermoplastic resin produced by polymerization of ethylene monomers.

OnePolyethylene particle fluidized bed dryerprinciple

The working principle of the vibrating fluidized bed dryer is that the material enters the machine from the feeding port, and under the action of vibration force, the material is continuously thrown forward in the horizontal direction. At the same time, the hot air exchanges heat with the wet material through the fluidized bed, and the wet air is discharged from the exhaust port after being dedusted by the cyclone separator, while the dry material is discharged from the discharge port.

IIPolyethylene particle fluidized bed dryeradvantage

1. The equipment adopts a segmented air intake form and is designed with a drying section and a cooling section. The drying section adopts a design with high air volume and medium air pressure of 110-120 ℃, which enables the rapid dispersion and surface pre drying of viscous wet particle materials, and can prevent the phenomenon of "powder spraying" at the fluidized bed feed inlet due to excessive positive pressure;

2. The uniform air plate of the fluidized bed adopts a combined structure, and a tongue shaped hole structure is used in the feeding section to ensure consistent wind direction and low pressure drop, accelerating the material advance speed and preventing material accumulation at the feeding port. The middle and rear bed plates adopt straight hole type bed plates to extend the material's residence in the fluidized bed

Time, improve drying effect.

3. Adopting a circular arc design and reinforced with stainless steel flanges, the appearance is beautiful and easy to clean without any hygiene dead corners, and the fluidized area is increased to improve the drying and cooling effects;

4. The damping system of the drying system is equipped with air bag shock absorbers imported from Germany, which have good damping effect. The equipment runs smoothly with low operating noise and can quickly cross the resonance zone during the start-up and shutdown process, avoiding the phenomenon of "resonance" between the equipment and the factory building.

IIIPolyethylene particle fluidized bed dryerdesign requirement

1. The equipment can dry polyethylene particles (particle size 3-5mm), with a final moisture content of less than 0.1%, an hourly output of 2 tons, and an operating temperature of 50-70 ℃.

2. Equipment material requirements: The material in contact with the material is 304, with a polishing accuracy of 0.8

3. Vibration motor: 2 × 2.0kW, frequency adjustable

4. Bed thickness: 2mm

5. Bed area 3m2

6. The opening size of the bed distribution board is 2mm

7. Feeding spiral (with hopper)

(1) Equipment Material Requirements: Contact Material 304, Polishing Accuracy 0.8

(2) Design processing capacity: 2.0t/h

(3) Specification: Φ 100 × 3000mm (slope<60 degrees)

(4) Power: 2.2kW

(5) Hopper capacity: 150L

8. Directly connected blower

(1) Airflow: 4200m3/h

(2) Wind pressure: 3000Pa

(3) Power: 5.5kW

9. Electric heater

(1) Design outlet temperature: 120 ℃ (designed according to air temperature of 20 ℃)

(2) Electric power: 125kW

4Polyethylene particle fluidized bed dryerprecautions

1. Control the drying temperature and time: Avoid excessive drying that may cause plastic to deteriorate or crack, ensuring the drying effect and product quality.

2. Regular cleaning and maintenance: Keep the equipment clean and in good operating condition, regularly inspect and replace vulnerable parts, and extend the service life of the equipment.

3. Pay attention to safe operation: During use, strictly follow the operating procedures and safety regulations to ensure the safety of personnel and equipment.

In summary, the vibrating fluidized bed dryer is an efficient, adjustable, structurally robust, and easy to maintain equipment for drying polyethylene particles. In the selection and use process, it is necessary to comprehensively consider factors such as production capacity, material characteristics, equipment costs, and pay attention to controlling drying temperature and time, regular cleaning and maintenance, and safe operation.

FivePolyethylene particle fluidized bed dryerSketch Map