LPG High-Speed Centrifugal Spray Dryer

The hot air enters the drying room in the spiral form and uniformly after being filtered and heated the air enters the air distributor on the top of the dryer. Passing through the high-speed centrifugal atomizer on the top of the tower of the small-scale spray dryer, the material liquid will rotate and be sprayed into the extremely fine mist liquid beads. Through the very short time of contacting the pure heat air, the materials can be dried into the final products in seconds. The final products will be discharged continuously from the bottom of the drying tower or from the cyclones of the spray dryer. The waste gas will be discharged from the blower. Hywell will design the bag filter to collect materials to reach 99.9% of materials recollection if some materials are special materials. If some materials will be environmental pollution, Hywell will design and manufacture the water scrubber for the high-speed centrifugal spray dryers.

LPG series high-speed centrifugal spray dryer consists of a liquid transfer system, air filter system and heating system, liquid atomizing, drying tower, air exhausting and material collecting, control system, and so on, the feature for each system as below:

1. Air filtering system and heating system of the high-speed centrifugal spray dryer

 Before the fresh air enters the heater, it should pass through the Pre & post-filter first, and then enter the heater for heating. For the heating method, there are electrical heaters or steam radiators, gas furnaces, and so on. Which method to choose depends on the customer's site conditions. To ensure the drying medium enters the drying chamber with high purity, the heated air should go through the high-temperature high-efficiency filter (HEPA-Optional) before entering the drying chamber of the high-speed centrifugal spray dryer.

2. Liquid transfer system of the high-speed centrifugal spray dryers

The liquid delivery system consists of a liquid tank, pump, and so on to ensure the liquid enters the atomizer smoothly.

3. Atomizing system of high-speed centrifugal spray dryer

The atomizing system consists of a high-speed centrifugal atomizer with an inverter and so on.

The powder from the high-speed centrifugal atomizer is between 40-120 microns.

4. Drying tower system of high-speed centrifugal spray dryer machine

The drying chamber of the spray drying machine consists of the spiral shell, hot air distributor, main tower, and relevant fittings.

The Spiral shell and hot air distributor: the spiral shell and hot air distributor at the top of the tower can regulate air flow rotation angle according to the specific condition to guide the airflow inside the tower effectively and avoid the material sticking to the wall. in the middle, there is the position for installing the atomizer.

Drying tower of spray drying machines: The inner wall of small-scale spray drying machines is a SUS mirror sheet, and welded by arc welding. The insulation layer is rock wool

The middle of the tower has a manhole to view and is convenient to clean and maintain the tower. For the tower body cross interface, the pipe elbow is arc butt design, reducing dead angle; sealed type.

The main tower of small scale spray drying machine is equipped with an air hammer, controlled by the pulse, and hits the main drying tower timely as to avoid the dust sticking to the wall

5. Air exhausting and product collecting system of high-speed centrifugal spray dryer

Material collecting systems of spray drying equipment, there are several types. Such as cyclone, cyclone + bag filter, cyclone+ bag filter +water scrubber, and so on. The method is depending on the material property itself. For the filtering system for the outlet air, we have a filter on request.

6. Control system of high-speed centrifugal spray dryers

HMI+PLC, each parameter can be displayed on the touch screen of the small-scale spray drying equipment. Every parameter can be controlled and recorded easily. but it also can use buttons to reduce client investment.