5-Gallon High-Temperature Spray Drying Machine CN-5000YL Stainless Steel

5-Gallon High-Temperature Spray Drying Machine CN-5000YL Stainless Steel

The operating principle of the spray dryer is that after air passes through the filter and heating unit, it enters the hot air distributor at the top of the drying chamber. The hot air distributed by the distributor uniformly enters the drying chamber and rotates in a spiral pattern. At the same time, the liquid material is sent to the centrifugal spray nozzle installed at the top of the drying chamber, where it is sprayed into fine mist droplets. This greatly increases the surface area of contact between the liquid material and the hot air, causing the moisture to evaporate rapidly, and the finished product is dried in an extremely short time. The coarser finished product is collected in the collection drum at the bottom of the dryer, while the exhaust gas is discharged by the centrifugal fan.

Key Features:

1. Rapid drying speed. After being atomized, the liquid's surface area is significantly increased, allowing it to evaporate 95-98% of its moisture in the high-temperature airflow almost instantly, with the drying process taking just a few seconds.

2. Utilizing co-current spray drying, the temperature of the droplets during the drying process is kept low, ensuring high product quality. Inside the spray drying chamber, the droplets flow in the same direction as the hot air. Although the hot air is at a higher temperature, it rapidly cools down upon entering the chamber due to immediate contact with the spray droplets, preventing excessive heating of the dried material. This method is suitable for drying heat-sensitive materials. The temperature of the discharged product depends on the exhaust air temperature and is lower than the exhaust air temperature.

3. Colorful large touch screen operation, combining full automatic control with manual control, bilingual panel, and parameter LCD display.

4. At shutdown, simply press the stop button; the machine will cease operation immediately, except for the fan, and the heating section will not be damaged due to improper operation (forceful shutdown of the fan).

4. The drying process is completed instantaneously, with the product particles maintaining an approximate spherical shape of the droplets. The product boasts excellent dispersibility, fluidity, and solubility.

5. Simplified production process with easy operation control. Spray drying is commonly used for solvents with moisture content of 40-60%. Even for special materials with moisture content up to 90%, they can be dried into powder form in one go. Most products do not require further crushing and sieving after drying, reducing production steps and simplifying the production process. This enhances product purity. The particle size, precision, and moisture content can be adjusted by changing operating conditions within a certain range, making control and management convenient.

6. To prevent material contamination and extend equipment lifespan, all parts in contact with materials are made of 304 stainless steel. For ease of operation, an integrated control system is used, which includes indicator devices and on/off mechanisms installed in the control cabinet. All stainless steel components are easy to disassemble and clean.

7. Equipped with an oil-free air compressor, the particle size of the powder is normally distributed, with excellent fluidity and extremely low noise, less than 60 dB, meeting laboratory noise standards (optional centrifugal atomization).

8. The two-fluid spray atomization structure, precision-manufactured from stainless steel, boasts a compact design, requires no auxiliary equipment, is easy to use, and maintains its new look over time. (Optional centrifugal atomization)

9. Real-time PID temperature control technology with precise temperature regulation, ±1°C heating and temperature control accuracy.

10. Feed quantity can be freely adjusted via the feed蠕动pump, and a magnetic stirrer is optional.

11. Spray dryer for sticky materials features a nozzle cleaner (wire brush) that automatically clears blockages. The frequency of the brush can be automatically adjusted.

The atomization of the spray dryer is related to the product's moisture content, particle size, and adhesion to the walls. The atomization method varies depending on the product. Many users encounter issues such as uneven moisture content, particle size inconsistency, and caking or adhesion on the equipment tower or cone, which are all related to the product's moisture, particle size, and adhesion.

Key factors affecting the powder spray drying efficiency include drying temperature, dew point, time, airflow, and air volume.

1. Drying Temperature: Refers to the air temperature entering the drying drum. Due to the physical properties of each raw material, such as molecular structure, specific gravity, specific heat, and moisture content, there are certain temperature limitations during the drying process. Excessive heat can cause volatilization and deterioration or caking of certain additives in the raw materials, while too low temperatures may prevent certain crystalline raw materials from reaching the required drying conditions. For example: PC at 120°C, ABS between 80 to 95°C. Additionally, when selecting the drying drum, it is necessary to use insulation to retain heat and low-temperature spray dryers to avoid temperature loss, preventing inadequate drying temperatures or wastage of energy.
2. Dew Point: In the desiccator, the moist air is first removed to contain very low residual moisture (dew point). Then, the relative humidity of the air is reduced by heating it. At this point, the vapor pressure of the dry air is lower. By heating, the water molecules within the particles are freed from the bond forces and diffuse towards the surrounding air.
3. Time: The absorption of heat and the diffusion of water molecules to the surface of the particles require a certain amount of time in the air surrounding the particles. Therefore, resin suppliers should specify the time required for a material to achieve effective drying at appropriate temperatures and dew points.
4. Airflow: Dry, hot air transfers heat to the particles in the drying storage bin, removing moisture from the particle surface, then returns the moisture to the dryer. Therefore, there must be sufficient airflow to heat the resin to the drying temperature and maintain this temperature for a certain period.
5. Airflow: The airflow is the primary medium for removing moisture from raw materials, and its size affects the effectiveness of dehumidification. Excessive airflow can lead to excessively high return air temperatures, causing overheating and affecting stability. Insufficient airflow cannot fully remove moisture from the raw materials. Airflow also represents the dehumidification capacity of the dehumidifying dryer.

5 Gallon High-Temperature Spray Drying Machine CN-5000YL Stainless Steel

Technical Specifications: