How to determine the temperature for the preheating of the mother liquor in the early stage of the evaporation system
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In evaporation systems, due to the low temperature of the mother liquor, a preheater is placed before the evaporator. How can one determine how many stages the preheater should have in order to increase the temperature? How should the preheating temperature for each stage be determined? (For example, preheating the mother liquor from 20°C to 80°C) – how is this temperature of 80°C chosen? Solve!
A mother liquor preheater usually has only one stage, while the number of stages in the raw material liquid preheater is determined by the efficiency and temperature of the secondary steam and steam condensate.