Tunnel Dryer for Food Sector

A tunnel dryer is a type of industrial dryer used to remove moisture from a variety of products through the application of heated air. It is called a tunnel dryer because it consists of a long tunnel or conveyor through which the product being dried is transported. The heated air is blown through the tunnel, and the moisture in the product is evaporated and carried away by the air.

Tunnel dryers are commonly used in the food, chemical, pharmaceutical, and other industries to dry products such as fruits, vegetables, grains, and powders. They can operate at high temperatures and with various airflow rates and configurations to optimize the drying process for different products.

Tunnel dryers can be either continuous or batch dryers. In continuous tunnel dryers, the product is continuously fed into one end of the tunnel and transported through it at a steady rate until it reaches the other end, where it is discharged. In batch tunnel dryers, a batch of product is loaded into the tunnel, dried, and then unloaded before the next batch is loaded.


The principle of a tunnel dryer is to use heated air to remove moisture from a product that is transported through a long tunnel or conveyor. The process typically involve loading, preheating, drying, cooling. The drying process can be controlled by adjusting the temperature, humidity, and airflow rate of the heated air. This allows for precise control of the drying process to optimize the quality of the final product. Tunnel dryers can be designed for either continuous or batch operation and can be used to dry a wide range of products in the food, chemical, and pharmaceutical industries.

Tunnel Dryer for Food, Vegetable, and other Product

Tunnel Dryer 3

Fruits, vegetables, and herbs can be dried in a continuous, high-quality manner using an industrial tunnel dryer. Compared to chamber dryers, the sequential continuous drying process offered by this device has a significant benefit because the preparation process is essentially continuous. As a result, smaller batches of products can be dried at any time if necessary, maintaining the scent, texture, and general quality of the product, thanks to the reduced capacity preparation processing lines.

This structural drying system, which comprises of an air duct above the dryer and a drying chamber, is entirely constructed of stainless steel. The doors are positioned at the front and back of the machine, making it simple to move production along as well as to maintain and clean the entire things.


The Tunnel Dryer has the application of drying various different product

Drying Fruits

Food dryers are often used to dry fruits such as apples, apricots, bananas, and berries. Drying fruits can help to extend their shelf life, preserve their nutritional value, and create new value-added products such as dried fruit snacks.


Food dryers can also be used to dry vegetables such as carrots, onions, peppers, and tomatoes. Drying vegetables can help to extend their shelf life, make them easier to store and transport, and create new value-added products such as vegetable powders.

Grains and Cereals

Food dryers are commonly used to dry grains and cereals such as rice, wheat, and corn. Drying these products can help to reduce moisture content, prevent spoilage, and create new products such as breakfast cereals and snacks.

Meat and Seafood

Food dryers can be used to dry meat and seafood products such as beef jerky, fish fillets, and shrimp. Drying these products can help to extend their shelf life, reduce weight and volume, and create new value-added products.

Herbs and Spices

Food dryers can also be used to dry herbs and spices such as basil, oregano, and cinnamon. Drying these products can help to preserve their flavor and aroma, and create new value-added products such as spice blends and tea blends.

The food dryers are a versatile and effective way to dry a wide range of food and vegetable products, and can help to extend their shelf life, reduce waste, and create new value-added products.


  • For best energy efficiency, use as insulated hood.
  • Low air humidity is ensured using a heat exchanger to maximize drying effectiveness.
  • Varying conveyor speed depending on the type of food and the drying conditions.
  • Fewer bacteria are growing.
  • Enhanced shelf life and better handling.
  • Belt or roller conveyor for moving produce.
  • Robustly constructed to withstand varying weather and wet production.
  • System for improving airflow around food and speeding up drying time through rollers.
  • At the exit, gentle Intel rollers lower produce onto the following piece of equipment available in a variety of sizes.

Kerone manufactures and supplies industrial drying equipment, including tunnel dryers. Their tunnel dryers are designed to provide efficient and consistent drying of a wide range of materials, such as food, chemicals, pharmaceuticals, and textiles.

Kerone’s tunnel dryers are typically designed with a conveyor belt that transports the material through the drying chamber, where hot air is circulated to remove moisture. The temperature and airflow can be controlled to achieve the desired drying rate and final moisture content.

Kerone offers customization options for their tunnel dryers to meet specific requirements, such as different conveyor belt types, drying chamber sizes, and heating sources (electricity, gas, or steam). We also provide installation, commissioning, and after-sales support services.

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