Rosenqvists Belt Dryer

The Rosenqvists Belt Dryer works on air with low temperature and high humidity that ensure even drying results of each strip. The Belt Dryer uses the counter-air-flow principle where the airflow covers the full width of the belts.

To optimize the crispiness, texture, fat uptake and color of the finished French fry, the blanched strips are dried in the belt dryer before frying step. The belt dryer has a unique airflow system, where the individual modules can be arranged to guide the air in either a counter flow direction or with the product flow, depending on location in the fully assembled dryer.

The air is coming over the full width of the product bed, creating a pressure chamber in each zone to ensure that all the strips are evenly dried from left to right. The air temperature and humidity in each zone can be controlled, to achieve the optimum product quality.

The belt dryer has a modular design, which allows us to tailor-make each dryer to a specific product requirement and capacity. Each module has two zones; each zone has a heating coil and centrifugal fan. The heating coils are driven with either steam or hot water. The effective width of the dryer is from 1 500 to 4 000 mm. To reduce energy the incoming air in each module is preheated via the outgoing air.

The specially designed heat exchanger arrangement is placed on the roof of the module. The belt design is a stainless eye-link type that limits the number of points of contact between the product and the belt. The walls made of stainless steel are insulated.

Each module has two doors that are fully opened for easy access and cleaning. Each belt has a cleaning system, high-pressure water spray system. The floor is sloped for easy drainage.