| 摘要 |
FIELD: food industry. ^ SUBSTANCE: invention is intended for usage in food-concentrates industry during processing cereal products, mainly - grains of coffee, barley, rye, soya. The method envisages preliminary heating of the product in the chamber for conductive heating (at the first stage - with exhaust air, at the second stage - with superheated exhaust steam), subsequent drying of the product in the chamber for drying with dehydrated air and thermal treatment with superheated steam in the chamber for frying with intermediate moistening of the product. One performs recuperative heat exchange between superheated exhaust steam and dehydrated air. Steam is produced in a steam generator. One organises closed recirculation circuits for air and superheated steam. Exhaust air after the product drying is additionally heated in a condenser before supplying for the first stage. Exhaust air cooling and dehydration are performed in a plate heat exchanger of the steam-ejector refrigerant machine where the cooling medium is represented by water. Operating steam is represented by a part of saturated steam from the steam generator. The cooling medium recirculation is created in the plate heat exchanger. A part of condensate from the water-cooled condenser, condensate from the plate heat exchanger, from the chamber for conductive heating and moisture evaporated from the product are drained into the steam generator to form a closed cycle. ^ EFFECT: invention ensures the ready product quality within the preset values, enhancement of energy efficiency and environmental safety as well as performance improvement. ^ 1 dwg |
