FIELD: material treatment processes. SUBSTANCE: device has vacuum chamber accommodating organic product mounting and conveying parts arranged therein in tiers, heating system, and organic material charging and discharging units. Vacuum chamber is assembled of set of sealed sections each built up of two shells; parts are made in the form of piled disks with blades, hollow boards being placed in-between; disks have tubular coolant ducts; disk hollow is filled with heat-conducting material and communicates with mentioned material expansion device. Hollow disk may be C-shaped and its tubular components may be formed by radial ribs provided with holes. EFFECT: improved drying of organic material; simplified design and reduced material input. 5 cl, 7 dwg
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