ABSORBENT SOLUTION RECOVERY UNIT, CO EXTRACTION UNIT, AND METHOD FOR MODIFYING THE ABSORBENT SOLUTION RECOVERY UNIT Russian patent published in 2022 - IPC B01D53/14 B01D53/02 C01B32/50 B01J8/00 

FIELD: physical processes.

SUBSTANCE: inventions relate to units and modification thereof. Described is an absorbent solution recovery unit containing the following: a regenerator for recovering an absorbent solution by removing CO₂ from an absorbent solution that has absorbed CO₂; a primary enriched solution pipeline ensuring the supply of the absorbent solution that has absorbed CO₂ to the recovery; a recovery reboiler for heating the absorbent solution exiting the regenerator; a reboiler pipeline intended for the removal of the absorbent solution stored in the regenerator and return of the absorbent solution to the regenerator via the recovery reboiler; a discharge enriched solution pipeline branched from the primary enriched solution pipeline and connected with a section of the reboiler pipeline downstream from the recovery reboiler; and a heating apparatus for heating the absorbent solution passing along the discharge enriched solution pipeline, wherein the heating apparatus is located on the discharge enriched solution pipeline. Described is a CO₂ extraction unit containing the following: an absorber made for extracting CO₂ from flue gas by means of an absorbent solution by bringing CO₂-containing flue gas into contact with the absorbent solution; the above absorbent solution recovery unit, wherein the primary enriched solution pipeline is configured to supply the absorbent solution that has absorbed C₂ in the absorber to the regenerator. Described is a method for modifying the absorbent solution recovery unit.

EFFECT: suppressed vibration in the discharge pipeline of the reboiler with a simultaneous reduction in the consumption of heat carrier in the recovery reboiler.

7 cl, 3 dwg