FIELD: heat and mass transfer devices.
SUBSTANCE: invention relates to heat-mass exchange devices operating under vacuum or at pressure commensurate with atmospheric pressure level, as well as for some cases with high pressure. Evaporation unit for low pressure rectification system includes rectification tower 1, heater 2 and evaporator 3. Heater 2 is arranged outside rectification column, its inlet is connected to rectification column 1 output, and the outlet of heater 2 is connected to the inlet of evaporator 3, in which the outlet is connected to the inlet of rectification column 1 above the liquid mirror in the cube, wherein rectification column 1, heater 2 and evaporator 3 are interconnected by pipeline lines, or directly.
EFFECT: high efficiency of the process of evaporating light fractions, reliability and compactness of the apparatus.
1 cl, 1 dwg
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