CO2 Product Quality: Assessment of the Range and Level of Impurities in the CO2 product Stream from MEA Testing at Technology Centre Mongstad (TCM)

During the recent MEA campaign at the Technology Centre Mongstad (TCM), a broad range of operational conditions have been explored for the post-combustion amine-based CO2 capture demonstration plant. This paper presents CO2 product composition data from online gas analyzers, originating from CO2 capture of two different flue gas sources available at TCM. Detailed composition data obtained by manual sampling and laboratory analysis, both internally at TCM and by Airborne Labs International Inc. is presented. Among the impurities identified and analyzed for, ammonia, formaldehyde and acetaldehyde are the compounds not commonly reported in the literature. The solvent quality, in terms of metal content and amount of degradation products, seemed to be the most influential parameter affecting the concentration of acetaldehyde and ammonia in the CO2 product gas. In addition, ammonia slip was found to be correlated with operating temperature of the overhead stripper system.