Abstract
In the present study, results from three different CO2 capture experimental scales (laboratory, pilot unit, and a larger pilot unit), using aqueous amine solutions of methyldiethanolamine (MDEA) 20 wt %, are compared in terms of loading capacity. All three tested scales produced results regarding CO2 absorption using MDEA aqueous solutions, which were largely in accordance with the theoretical loading capacity of the used amine. Nevertheless, the observed differences between the theoretical and actual absorption behaviors of MDEA solutions for the different scales can be justified with the relative weight that process variables exhibit when the process is scaled up. Therefore, in order to achieve a correct scale-up of the process, simulations should be performed in order to define the best set of operational parameters in order to achieve high production yields and therefore more process profitability.
Highlights
Environmental issues, due to the emissions of pollutants from combustion of solid, liquid, and gaseous fuels on various stationary and mobile energy systems, as well as the emissions from manufacturing plants, have contributed to major global problems involving pollutants such as sulphur, nitrogen oxides (SOx, NOx ), and particulate matter, and greenhouse gases (GHG)such as carbon dioxide (CO2 ) and methane (CH4 ) [1]
Determine the CO2 loading capacity by the aqueous MDEA solutions in order to assess whether the results obtained in this pilot unit would be in accordance with the ones obtained in the small pilot
In the tests performed in the larger pilot plant, the precipitation method was used to determine the CO2 loading capacity by the aqueous MDEA solutions in order to assess whether the results obtained in this pilot unit would be in accordance with the ones obtained in the small pilot unit
Summary
Environmental issues, due to the emissions of pollutants from combustion of solid, liquid, and gaseous fuels on various stationary and mobile energy systems, as well as the emissions from manufacturing plants, have contributed to major global problems involving pollutants such as sulphur, nitrogen oxides (SOx , NOx ), and particulate matter, and greenhouse gases (GHG) Such as carbon dioxide (CO2 ) and methane (CH4 ) [1]. In a chemical absorption process, as shown in Figure in which the absorbent is thermally regenerated. The actual need to perform scale-up for CO2for absorption plants plants is considered critical [2], as the existing ones are not enough to deal with the current huge is considered critical [2], as the existing ones are not enough to deal with the current huge amount amount of 2 emissions to the atmosphere. All tests were performed at 1 atm and 20 ̋ C
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