Chitosan spray dryer

Chitosan, also known as deacetylated chitin, soluble chitin, or glucosamine, is obtained by deacetylating chitin. Chitin is replaced by an acetylamino group, while chitosan is replaced by an amino group. This makes chitosan one of the rare alkaline polysaccharides in natural polymers.

OneChitosan spray dryerprinciple

Hot air is introduced at the top of the drying tower, while the material liquid is sent to the top of the tower and sprayed into mist like droplets through an atomizer. These droplets have a large surface area and quickly evaporate when in contact with high-temperature hot air, becoming a drying product in a very short time. After the hot air is discharged from the bottom of the drying tower and comes into contact with the droplets, the temperature significantly decreases and the humidity increases. It is extracted as exhaust gas by the exhaust fan, and the particles carried in the exhaust gas are recovered by a separation device.

IIChitosan spray dryerProcess Overview

Set appropriate parameters based on the properties of chitosan solution and product requirements. The inlet air temperature is generally controlled at 120-180 ℃. If the temperature is too high, chitosan may decompose; The temperature is too low and the water evaporation is insufficient. The outlet air temperature is controlled at 60-90 ℃, and the feeding speed is adjusted according to the model and performance of the spray dryer, which is generally 5-20 mL/min.

IIIChitosan spray dryerProcess requirements

1. Inlet air temperature 120-220 ℃

2. Air outlet temperature 70-95 ℃

3. Atomization disk speed ≥ 18000 rpm

4. Liquid solid content of 15% -45%

5. Evaporation capacity ≥ 50 kg H ₂ O/h.

4Chitosan spray dryerTemperature control parameters

1. Inlet air temperature: adjustable range of 140 ℃ -220 ℃, control accuracy ± 2 ℃

2. Air outlet temperature: adjustable range 70 ℃ -95 ℃, control accuracy ± 2 ℃

3. According to the properties of chitosan solution, the inlet temperature is generally controlled at 120-180 ℃, and the outlet temperature is 60-90 ℃

FiveChitosan spray dryerAtomization system parameters

1. Atomizer form: High speed centrifugal atomizer

2. Atomization disk speed: ≥ 18000 rpm (stepless variable frequency speed regulation)

3. Atomizing disc material: high-strength, corrosion-resistant stainless steel or special alloy

4.液滴粒径： 20-100μm2

5. Feeding method: peristaltic pump or screw pump, stepless speed regulation

6. Liquid solid content of materials: suitable range of 15% -45%

7. Filtration requirement: A 100 mesh filter is used to prevent impurities from entering the atomizer

8. Yield: The main tower bottom and cyclone separator are used for two-stage material collection, with a yield of ≥ 95%. The final moisture content is usually below 5%

8. Material requirements: The main tower body, cyclone separator, and air duct are made of SUS304 or SUS316L stainless steel, and the inner wall is mirror polished (Ra ≤ 0.6 μ m)

9. Control system: PLC+color touch screen, one click start stop, fully automatic operation

10. Heat source method: steam heat exchange, electric heating, or natural gas