Evolution of CO2 molar concentration at inlet and outlet of bubbler as function of aqueous MEA concentration

https://doi.org/10.1155/2015/965015

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Figure 3 depicts the CO₂ molar concentration of the gas phase stream at the inlet and outlet of the bubbler. It shows that, at an inlet concentration of 30% CO₂, MEA concentrations lower than 50% (w/w) were not able to absorb 100% of the CO₂ present in the gas stream. This low absorbing efficiency is not a property of the MEA solvent but rather a characteristic of the test apparatus and indicates that the residence time of the gas stream within the bubbler for low MEA concentrations is too low to obtain accurate measurements.

Figure 3 

Evolution of CO₂ molar concentration at inlet and outlet of bubbler as function of aqueous MEA concentration.

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