FIELD: heating; mechanics.
SUBSTANCE: multi-stage evaporation plant is proposed where evaporator 1 (1) is heated by overheated waste steam with air taken for example from drying plant through jet scrubber (33). Secondary steam formed in product during evaporation stage 1 (1) is supplied to evaporation stage 2 (3) through mechanical compressor (67) for heating. Firstly compressor (67) decreases dew point in evaporation stage 1 chamber (1), secondly it increases temperature of secondary steam supplied to evaporation stage 2 (3) for heating.
EFFECT: increased effectiveness of evaporation.
8 cl, 1 dwg
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