Method and device for drying materials

The invention covers the techniques for drying material of vegetable, animal origin fish and sea food with the use of vacuum and can be used for getting essential oils and biologically valuable components used in food, pharmaceutical and perfumery industries. The proposed method for drying includes several thermo-vacuum-impulsive cycles: heating up of material to the temperature not leading to denaturation of its original quality characteristics, a quick impulsive vacuum treatment, exposure of material after a vacuum treatment, a vacuum relief to atmospheric pressure. Heating up of material in a drying chamber and a vacuum relief is performed with dried air or gas heat medium with the temperature up to 300°C. The apparatus to perform the method of drying materials comprises two drying chambers with pressure-proof doors connected by means of pipelines with quick-response valves to a receiver, heat exchanger-condensers, condensate tanks, a vacuum pump, a device for heat medium heating up and delivering installed in a separate chamber with heat insulation and connected by means of heat insulated forcing air ducts with quick response valves to inlet of each drying chamber. Inside each chamber a container with the tube along the axis of rotation with rotating capacity is installed. At that either the end surface of the container is perforated to supply with heat medium or opposite walls of the container are netted. The invention allows decreasing drying time and increasing the quality of the drying materials as well as getting essential oils and biologically valuable components from materials being dried.