FIELD: process engineering.
SUBSTANCE: proposed invention relates to drying before processing and packing. In the case of food product, drying aims at ruling out whatever contact between said product and bacteria or other microorganisms. In usual conditions, general sterility can hardly be ensured between contact of food material and dry air. Besides, drying unavoidably involves some losses of volatile components caused by increased drying temperature. Proposed method comprises steps whereat gaseous medium with superheated steam is fed into envelope 2, food material is fed there inside to dry it therein. Dried food material is removed from said envelope 2. Said process is controlled on the basis of data on gas temperature and content of steam inside said envelope. Extracted gas medium is condensed to extract volatile matter from condensate. Proposed device comprises envelope 2 to keep gaseous medium with superheated steam. Note here that said envelope has inlet 40 and outlet 42. Device includes also the means 100 to generate said medium with superheated steam, first means 30 to displace food material via inlet 40 inside envelope 2, second means 30 to displace material through outlet 42 from envelope 2, and steam discharge pipeline 120 extending from outlet 122 to condenser 124, blower 128 arranged in steam discharge pipeline 120. Note here that said blower is controlled by control units on the basis of data on gas temperature and content of steam inside said envelope. Extracted gas medium is condensed to extract volatile matter from condensate.
EFFECT: efficient and sterile drying.
29 cl, 3 dwg
