FIELD: process engineering.
SUBSTANCE: invention relates to separation of hydrocarbons. Unit for stripping of first component from the mix comprises distillation column with rectifier section with top steam flow outlet, section with bottom fluid flow outlet and raw stock section with stock inlet arranged between rectifier section and evaporator section, reboiler of bottom residue for re-evaporation of bottom fluid flow coming from evaporator section, upper steam flow condensation section, lateral steam bleed pipe, heat pump-compressor with inlet communicated with said lateral bleed pipe and outlet, second reboiler-heat exchanger with fluid side communicated with bottom flow from evaporator section and steam side communicated with outlet of heat pump-compressor.
EFFECT: efficient distillation, higher purity of bottom product, power savings.
9 cl, 4 dwg
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