FREMGANGSMAATE TIL GJENVINNING AV CO2 FRA UTGANGSGASSER SOM INNEHOLDER CO2 OG OKSYGEN OG EVENTUELT OGSAA SVOVELFORBINDELSER.

摘要

A method is disclosed for recovering carbon dioxide from gases containing the same as well as oxygen and/or sulfur compounds employing aqueous 5 to 80% alkanolamine solutions. Corrosion of the metals of construction and solvent degradation are minimized by the use of copper ion maintained in solution and continuous removal of ionic iron and solvent degradation products by treating the solvent or a portion of the solvent with a carbon bed, mechanical filter and/or a anion exchange resin.