Vacuum tray dryer

Compared with traditional microwave equipment:
1) Low temperature: At 1 atmosphere (101.3 kPa), the boiling point of water is 100℃. However, at 0.073 atmospheres (7.37 kPa), the boiling point of water is only 40℃. The microwave vacuum equipment operates under negative pressure, allowing materials to be processed at low temperatures, which greatly ensures the quality of the materials. This equipment is particularly suitable for materials that need to be dried at low temperatures, such as herbal extracts, ginseng, etc.
2) Pressure: In the negative pressure environment of microwave vacuum equipment, water evaporates faster at lower temperatures.
Compared with traditional vacuum drying equipment:
1) Penetrability: In a vacuum environment, heat in traditional vacuum drying equipment cannot be transferred by convection but only by conduction, thus resulting in slow heating speed, long drying time and high energy consumption. The microwave vacuum drying equipment transfers energy through radiation and can be fully heated without any medium, thus avoiding the above-mentioned disadvantages.
2) Uniformity: Microwave heating acts simultaneously on the inside and outside of the material, resulting in an extremely small temperature difference between the inside and outside of the material. Therefore, the drying is more uniform and the heating efficiency is greatly improved.
3) Fast speed: Due to the penetrating nature of microwaves and the radiative heat transfer method, both the inside and outside of the material are heated simultaneously, thus significantly increasing the drying speed.

The unique heating mechanism of microwaves enables the material to be heated both inside and out simultaneously. A vacuum (i.e., negative pressure) environment enables materials to dry at low temperatures, thus ensuring uniform heating of the materials, maintaining their original color, and keeping their composition unchanged. In conclusion, microwave vacuum drying equipment effectively guarantees the quality of raw materials.

1.It is suitable for dyeing high-value-added and heat-sensitive materials, such as agricultural products and by-products, health products, food, medicine, fruits and vegetables, etc. 2. It can be used to dry or remove the crystalline water from herbal extracts and chemicals.