FIELD: food-processing, microbiological and chemical industry, in particular, removal of liquid or frozen agent from product, more particular, sublimation concentration and drying of frozen solutions or suspensions, sublimation drying of frozen food products, and also concentration or drying of liquid solutions and suspensions.
SUBSTANCE: method involves providing reaction of product with absorbing solution in vacuumizer by mass exchange through gaseous phase; providing heating of product to be dried using absorption heat of vapors of agent to be removed, said absorption being provided by means of absorbing solution and said heat being transmitted through heat transmitting device or through heat conducting walls which separate product to be dried from absorbing solution. In order to heat said product, heat of condensation vapors of agent removable from absorbing solution during regeneration thereof may be also utilized. Freezing of product and keeping of temperature mode in drying chamber are provided by means of refrigerating unit. Utilization of absorbing solution for creating hydraulic gates in processing pipelines provides for increased pressurization of vacuumizer and reduced loading of vacuum pump.
EFFECT: reduced consumption of power for sublimation or evaporation of agent to be removed from product by drying procedure.
13 cl, 4 dwg
