Absorbent regeneration with flashed lean solution and heat integration

摘要

A method for regeneration of a rich absorbent having absorbed CO2 (5) to give a regenerated, or lean absorbent (4) wherein the lean absorbent leaving the regenerator column is flashed (32) to produce a gaseous phase (33) that is compressed (34) and reintroduced into the regeneration column, and a liquid lean absorbent phase (4) that is heat exchanged (7) against the rich absorbent.