Industrial Microwave Drying Equipment

Almost all industrial sectors have thermal drying, involving tens of thousands of materials. Drying of materials is a high-energy industry. According to incomplete statistics, 10-25% of the world’s energy is used for industrial thermal drying. The energy used for drying in China accounts for about 12% of the total energy consumption of the national economy. Microwave drying equipment for tea

Dry sodium chloride

Disadvantages of traditional drying methods:

Industrial Microwave Drying Equipment

• Energy utilization efficiency is low. Since the discharged hot humid air contains a large amount of sensible heat and latent heat, the energy utilization efficiency of the conventional drying equipment is generally low and the highest is only about 35%;
• The drying cycle is long. The heating method of the conventional drying process is external heating, and the heat can only be transferred from the outside to the inside, the heating is slow, and the drying time is long;
• poor product uniformity;
• Drying equipment is backward in technology and difficult to maintain, some processes are easy to cause material loss and quality decline,which not only increase the production cost, reduce the recovery rate, but also pollute the environment.

Advantages of industrial sodium chloride microwave drying equipment:

Due to the preferential selective heating features of microwave to water, especially for the drying of metallurgical materials, the effective drying object is mainly a small amount of water to be removed, which greatly reduces the energy consumption and effectively avoids emissions of greenhouse gases and pollutants.

• Since sodium chloride itself does not absorb microwaves, the conveyor belt speed is adjusted under the conditions of fixed microwave power and air volume.When the temperature of the sodium chloride is 65-70 ° C, the water content of 0. 8-4% of water can be dried to less than 0.5%, effectively reducing the temperature, achieving energy saving;
• Industrial microwave drying equipmentcan automatically adjust the conveyor belt speed for sodium chloride with different water content by configuring a moisture analyzer in the feeding device, compared with the manual adjustment and fixed control of the existing microwave drying instrument, the energy saving effect is remarkable;
• The magnetron is replaced by air-cooled to water-cooled, which improves the service life, ensures the stability of the microwave input powerand avoids the attenuation of the microwave power;
• Adding a hopper on the conveyor belt, effectively avoiding the crust phenomenon of sodium chloride and further increasing the drying rate;
• A roller crusher is added before the discharge to control the particle size of sodium chloride below 3 mm, which improves the quality rate and the pass rate of the product.

Industrial microwave drying equipment

Working principle of industrial microwave drying equipment:

• The sodium chloride having a water content of 0.8-4% is placed in a feeding device of the microwave drying equipment,the sodium chloride is added to the conveyor belt from the tank, and the conveyor belt speed is 0. 5-2 m / min, the material layer baffle is set on the conveyor belt, the distance between the baffle and the conveyor belt is adjusted, and the thickness of the control layer is 1 -5cm, the material is continuously conveyed into the microwave cavity while maintaining the same thickness;
• Moisture analyzer is arranged on the feeding device to automatically detect the change of moisture in the sodium chloride and reflect the moisture value on the control panel;
• The microwave drying equipment consists of 3-15 microwave heating chambers and hollow cavity body in series. One cavity is arranged after each of the two microwave heating chambers, and each heating chamber is configured with magnetron.By controlling the speed of the conveyor belt, the residence time of the material in the microwave cavity is adjusted, thereby controlling the temperature of the sodium chloride in the drying process to be 65-70 ° C;
• The exhaust device is installed at the top of each of the two microwave heating chambers, and the exhausting amount of the air extracting device reaches 1247-2250 m3/h, ensuring the water vapor generated by the sodium chloride of different water content during the drying process is discharged from the microwave cavity in time, effectively preventing “condensation” in the microwave cavity, that is, preventing water droplets from being deposited on the inner wall of the cavity. Once condensation occurs, part of the microwave will heat the water droplets, causing energy loss;
• On the conveyer belt, place a dumper to turn over materials to avoid sodium chloride crusting;
• The magnetron adopts a copper annular coolerand is cooled by water, which effectively improves the service life of the magnetron, and more importantly, avoids the phenomenon of microwave output power attenuation;
• Roller crusher is installed at the tail of the discharge device to crush large particles of sodium chloride to 3 mm or less.

Customer visit

Our services:

1. All mechanical equipment is warranted for one year.
2. Our company will customize industrial microwave drying equipmentor preserved fruit microwave drying equipment according to your specific requirements.
3. We are at your service 24 hours a day.

Our Leader Microwave Equipment Company has experienced mechanical manufacturing team, foreign trade documentation team, after-sales service team, etc. to provide you with the highest quality machinery, if you need microwave machinery, please contact us immediately, we look forward to your call!

Industrial Microwave Drying Equipment