Introduction and application of tunnel microwave dryer

A microwave tunnel dryer is a piece of continuous microwave drying equipment that is frequently used to dry food, chemicals, wood, pet food, pharmaceutical intermediates, and other materials. It is appropriate for drying paste materials as well as flakes, strips, and grains. The tunnel dryer is small in size, simple to install, long-lasting, and easy to maintain.

What Are the Advantages of Using Industrial Microwave?

1. Microwave heating has a fast drying speed and save time.

2. Drying effect is good with high product quality.

3. Microwave drying evenly from beginning to the end.

4. The thermal radiation process with automatic balance performance.

5. Save labor and easy to operate.

6. Microwave drying and sterilization thoroughly at the same time.

How does industrial microwave oven work?

An industrial microwave dryer works in the same way as when we heat food in a household microwave oven. The microwaves cease at the same moment as the drying machine or microwave oven is switched off. The drying method is based on microwaves penetrating the moist products, where the microwaves are converted into heat. The moisture turns into vapor and is transported from the dehumidification pipe.

Prepare the products, when the products that need to be dried are loaded into the hopper, they will flow onto the conveyor belt automatically, or the products can also be spread directly on the conveyor belt. The height of the conveyor belt from the ground and the width of the conveyor belt can be customized according to the product.

After turning on the microwave tunnel dryer, the product will be transported to the inside of the machine along with the conveyor belt. During the whole process from the product entering the heating area to exiting the machine, the water molecules inside of the products will rotate as they try to align themselves with the alternating electric field induced by the microwave rays. The rapid movement of the polar molecules creates friction and results in heat dissipation in the material exposed to microwave radiation.The moisture in the product is constantly evaporating due to the continuous heat generated.

The exhaust fan will move the water vapor produced during the drying process away from the pipes. Considering the plant's area, it is possible to organize the pipes and fans sensibly. Devices for dust removal and recovery might be implemented in accordance with real needs.

The dried goods is available at the store after drying. The cooling zone can be expanded to further chill the product if packaging is required after cooling.

The drying process is ongoing throughout. At the feed inlet, fresh products are always being introduced, and at the output, dried goods are constantly available. The microwave dryer may thus be simply linked to other pieces of machinery and put together into an automated manufacturing line.

Tunnel Dreyr Applications

There are many applications of tunnel dryers, and products in almost any state can be dried. You can refer to the following real cases to understand the  of tunnel dryer applications.

Spice Powder Drying By CE Certificated Continuous Microwave Tunnel Dryer

It uses microwave energy to heat the powder to a particular temperature and it makes the powder dry very fast. The high-efficiency drying method also allows the powder to dry at a very high rate. Using the high-efficiency drying method without any wastage.

Black Soldier Fly Larva / Mealworm Drying With Microwave Tunnel Dryer

Mealworms are quite hardy and can endure low temperatures for a very long time. However, they struggle in extremely hot or extremely cold climates. Due to a lack of moisture, they become incapable of absorbing nutrients, including protein, under high temperatures. When mealworms are dried in a machine, they are prepared for drying as soon as they emerge from the outlet because the mealworms are dried off before they reach these high temperatures.

Tea Leaf Drying By Microwave Tunnel Dryer

You can dry tea leaves anyway you'd like. How are they dried by a microwave, exactly? We must take a step back and analyze our goals in drying these leaves in order to properly respond to this issue. We don't want to risk damaging the color or scent of the leaf since we want a wonderful flavor in our tea or coffee. All of these objectives will be accomplished through microwave leaf drying.

The close closeness of the heat source to the leaf makes microwave drying superior than air drying. The temperature of the air is greater than the significantly lower water vapour concentration. Only heated air remains after the fast evaporation of water vapour. In order to eliminate any extra moisture from the surface, it is then left in place for a short while. Water starts to evaporate from the leaf as it continues to dry.