DESORPTION UNIT (EVAPORATION) WITH DEEP HEAT RECOVERY Russian patent published in 2020 - IPC B01D53/14 

FIELD: technological processes.

SUBSTANCE: invention relates to cleaning of gas mixtures. And can be used both in systems with extractive rectification or for desorbers, and at rectification of substances with high temperature of bottom liquid. Set task is solved due to that in desorption unit (evaporation) with deep heat recovery, which includes throttle device, phase separators, pump for swapping saturated absorbent, first recovery heat exchanger, second recovery heat exchanger, still liquid evaporator, condenser for condensation of light fractions, desorber, recuperative heat exchangers are thermosiphon evaporators, first inputs of which are connected to first and second phase separators, second inlet of first thermosiphon evaporator is connected via evaporator to heat carrier supply line, and the second inlet of the second thermosiphon evaporator is connected to the bottom section of desorber, the light fraction separator outlets are connected to the desorber top section and / or the condenser, the second separator outlet through the pump to lift the heavy fluid fractions into the desorber is connected to the desorber feed line.

EFFECT: objective of the invention is to intensify the absorption process and to increase its efficiency by deep heat recovery and reducing energy and capital costs.

1 cl, 1 dwg