Shanghai Yuming spray dryer

The working principle of the spray dryer is that after the air passes through the filter and heating device, it enters the hot air distributor at the top of the drying chamber. The hot air through the hot air distributor enters the drying chamber evenly and rotates in a spiral shape. At the same time, the feed liquid is sent to the centrifugal spray head at the top of the drying chamber. The feed liquid is sprayed into performance fog droplets, which greatly increases the surface area of the feed liquid and the hot air, rapidly evaporates the water, and drying the finished product in a short time. The coarser finished products are collected by the collection cylinder at the bottom of the dryer, and the exhaust gas is discharged by the centrifugal fan.

Features of spray dryer

1. The drying speed is fast. After centrifugal spray, the surface area of the feed liquid is greatly increased. In the high-temperature airflow, 95-98% of the water can be evaporated instantly, and the drying time takes more than ten seconds.
2. Parallel flow spray drying is adopted. During the drying process, the temperature of the droplets is not high, and the product quality is good. In the spray drying room, the droplets flow in the same direction as the hot air. Although the temperature of the hot air is high, because the hot air enters the drying room and immediately contacts with the spray droplets, the indoor temperature drops sharply, which does not cause excessive heating of dry materials. It is suitable for drying heat sensitive materials. The temperature of discharged products depends on the exhaust temperature and is lower than the exhaust temperature.
3. Widely applicable. According to the physical properties of the material, it can be dried with hot air or shaped with cold air. A large number of products with significant differences in characteristics can be produced using this machine, including polymers and resins, dyes, pigments, ceramics, glass, herbicides, insecticides, carbohydrates, dairy products, mixed acids, by-products of slaughterhouses, blood and fish products, detergents and surface cleaning agents, fertilizers, organic compounds, and inorganic compounds.
4. Due to the instantaneous completion of the drying process, the particles of the product can basically maintain a droplet like shape, and the product has good dispersibility, fluidity, and solubility.
5. The production process is simplified and the operation control is convenient. Spray drying is usually used for solvents with a moisture content of 40-60%. Even if the moisture content of special materials is up to 90%, they can be dried into powder products at one time. Most products do not need to be crushed and screened after drying, which reduces the production process, simplifies the production process and provides the purity of products. Within a certain range, the particle size, precision, and moisture content of the product can be adjusted by changing the operating conditions, making control and management very convenient.
6. In order to prevent material contamination and extend equipment life, all parts in contact with the material are made of 304 stainless steel material. For ease of operation, the control system adopts integrated operation, that is, indicator devices and opening and closing devices for each component are installed in the control cabinet.

Technical parameters of Shanghai Yuming spray dryer:
◆ Seven inch parameter large touch screen operation, combining fully automatic control and manual control, with Chinese and English panels and parameter LCD display.
Real time PID constant temperature control technology, accurate temperature control, heating temperature control accuracy ± 1 ℃.
◆ The spray, drying and collecting device is made of 304 stainless steel with double mirror surface, and the spray drying room is equipped with an observation port.
◆ With the atomization structure of centrifugal spray, the particle size of powder is normally distributed, and the fluidity is good.
The feeding amount can be adjusted through the feeding peristaltic pump.
◆ * Protection function, the fan cannot start and the heater cannot start.
Equipped with air inlet filtration to ensure sample purity.
The dried product has uniform particle size, with over 95% of the dry powder in the same particle size.
◆ Inlet air temperature control: 30 ℃~300 ℃
◆ Air outlet temperature control: 30 ℃~140 ℃
Centrifugal nozzle: 2000-40000 revolutions per minute (adjustable)
Evaporation water volume: 5000mL/H
◆ Large feed rate: 5000ml/h (adjustable)
◆ Feeding method: peristaltic pump adjustment, using touch screen to adjust speed
◆ Small feed volume: 50mL
Temperature control accuracy: ± 1 ℃
Average drying time: 1.0-1.5s
Fan: 2.2KW, air volume 315m3/min, positive pressure: 40 (kpa), negative pressure: -32 (kpa), speed: 2800 (r/min)
◆ Overall power: 9KW/380V
Double mirror stainless steel drying tower diameter: inner diameter 1000mm, outer diameter 1100mm, height 2000mm
◆ Dimensions: 2000mm (length) x 1100mm (width) x 2200mm (height)

We can customize the size according to customer requirements