Process and installation for regenerating an absorbent solution containing gaseous compounds

摘要

The present invention relates to a process for regenerating an absorbent solution, for example an aqueous solution of an alkanolamine, containing acid compounds such as CO2 and/or H2S, in which said compounds are released by heating and/or stripped away. The regenerated absorbent solution, drawn off from the regeneration zone, is subject to a plurality of successive expansions with formation of a vapor in the course of each expansion, and the vapor thus formed is gradually compressed to form a compressed vapor, which is introduced into the regeneration zone. Such a process of regeneration with expansion of the regenerated solution is used in the regenerative processes for scrubbing gases containing acid compounds and renders possible an appreciable overall saving of energy.