What is the features of microwave cacuum dryer?

Low temperature and high efficiency: When the ambient air pressure drops below the vacuum degree of 7.37 kpa, the boiling point of water is ≤ 40 ℃. Combined with microwave (electromagnetic field), the material can be heated without medium, and the moisture in the material can evaporate quickly. Compared to conventional thermal conductivity vacuum drying (including freeze drying), the drying efficiency ratio is more than five times. Especially for products with large volume and poor thermal conductivity, it is more suitable.

Uniform and thorough: Microwave has the characteristic of selective heating. The portion of the material with a high moisture content absorbs more microwaves and generates more heat, while the opposite is true; At the same time, the product is internally and externally heated as a whole, without thermal inertia, heat transfer loss and fast drying speed. Microwave directly penetrates the product, excites water molecules, and generates heat. The internal temperature is slightly higher than the external temperature. It is possible to avoid temperature gradients and create a "shell", which is characterized by full evaporation of water.

Simple control: Due to the characteristics of rapid adjustment of microwave power and inertia free, combined with PLC automatic control system, timely control is convenient for adjustment and determination of process parameters; One button start/stop; Multi group parameter storage, product replacement, one click parameter switching;

Maintain the primary color and shape: Due to the short microwave drying time, it solves the problem of discoloration and deformation of products caused by long traditional drying time and high humidity, especially for agricultural and sideline products, poultry products, rare medicinal materials and other products requiring low temperature and preventing oxidation that require drying.

Energy conservation and environmental protection: Compared to conventional store heating and drying methods, microwave drying can generally save more than 50% of electricity. The equipment uses microwave radiation to transfer energy, which heats the medium as a whole without the need for other heat transfer media, avoiding the characteristic of slow heat transfer under vacuum conditions. Therefore, the speed is fast, the efficiency is high, the drying cycle is greatly shortened, and the energy consumption is reduced. No toxic gases, liquid emissions, environmentally friendly drying technology.