Abstract
Postcombustion CO2 capture into aqueous solutions of 3-methylaminopropylamine (N-methyl-1,3-propane diamine – MAPA) activated dimethyl-monoethanolamine (2-dimethylaminoethanol – DMMEA) is reported from a laboratory scale pilot plant. The chemicals were selected among others due to their environmental impact and properties for post combustion CO2 capture. The objective of running the pilot plant tests was to obtain data for cyclic capacity, mass transfer rate, specific heat requirements and operational behaviour of the mentioned system. The data are considered used in modeling. The obtained data are compared to other systems, including the 30mass% (5M) monoethanolamine (MEA) and potassium sarcosine systems.The overall gas side mass transfer coefficient and heat input were estimated. It was found that the system performs similarly to MEA at lower heat inputs. The reboiler heat load could not be increased to high values due to DMMEA volatility. However, it is expected that the DMMEA/MAPA system will have better performance than MEA if the volatility is managed properly with a better plant design and thus higher reboiler heat duties could be used.
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