The pressure spray dryer is a kind of equipment that uses pressure to atomize liquid materials into tiny droplets and then dries them instantaneously through hot air. Its working principle is based on the spray drying technology. Materials are sent to the spray device through a high-pressure pump to form foggy particles, which are then fully contacted with hot air to achieve rapid evaporation and drying, and finally collected to obtain dried products.

Working principle of pressure spray dryer

1. Material atomization: after being pressurized by the high-pressure pump, the wavy materials enter the spray device (such as nozzle) and are atomized into tiny droplets under the action of high pressure.

2. Hot air contact: The atomized droplets are fully mixed with preheated hot air in the drying chamber, and the hot air provides the required energy to rapidly evaporate the moisture in the droplets.

3. Drying and collection: As the moisture evaporates, the material gradually dries to form powder or particles, which are then collected through equipment such as cyclone separators and bag filters.

4. Exhaust gas treatment: The exhaust gas generated during the drying process is treated with dust removal, cooling, and other measures to meet environmental requirements before being discharged.

Main features of pressure spray dryer

1. High efficiency and energy saving: the pressure spray dryer adopts efficient heat exchange technology, with high heat utilization rate and low energy consumption.

2. Fast drying speed: Liquid materials can complete the drying process in a very short time, avoiding thermal sensitivity loss during the drying process.

3. Good product quality: The dried product has uniform particle size and good flowability, making it easy to store and transport.

4. Easy to operate: The equipment has a high degree of automation, is easy to operate, and is easy to maintain.

5. Wide applicability: Suitable for drying various wave state materials, such as solutions, suspensions, emulsions, etc.