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Processes 2019, 7(2), 78; https://doi.org/10.3390/pr7020078

New Approaches in Modeling and Simulation of CO2 Absorption Reactor by Activated Potassium Carbonate Solution

1
Departments of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Prof. dr. doc. D. Mangeron Street no. 73, 700050 Iasi, Romania
2
Institute of Environmental Engineering, University of Pannonia, Egyetem St. 10, HU-8200 Veszprém, Hungary
3
Department of Environmental Engineering, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Prof. dr. doc. D. Mangeron Street no. 73, 700050 Iasi, Romania
*
Author to whom correspondence should be addressed.
Received: 29 December 2018 / Revised: 18 January 2019 / Accepted: 28 January 2019 / Published: 4 February 2019
(This article belongs to the Special Issue Modeling, Simulation and Control of Chemical Processes)
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Abstract

The increase of CO2 concentration in the atmosphere is in strong relation with the human-induced warming up due to industrial processes, transportation, etc. In order to reduce the CO2 content, end of pipe post-combustion methods can be used in addition to other methods and techniques. The CO2 capture by absorption in potassium carbonate–bicarbonate activated solutions remains a viable method. In this study, a mathematical model for a packed bed reactor has been developed and tested. The mathematical model is tested for an industrial reactor based on CO2 absorption in Carsol solutions. The proposed model was validated by resolving for CO2 and water content, carbonate–bicarbonate, concentrations etc. For each operational parameter the error was calculated. The error for CO2 concentration is up to 4%. The height of the packed reactor is calculated as function of CO2 concentration in the final gas phase. The validated model can also be used for absorbing other CO2 streams taking into account the fact that its efficiency was proved in industrial scale. Future reactors used for CO2 absorption should consist of two parts in order to use partially regenerated solutions in the first part, with significant energy savings in the operational costs. View Full-Text
Keywords: CO2 absorption; reactor modeling; gas purification; activated carbonate–bicarbonate solution CO2 absorption; reactor modeling; gas purification; activated carbonate–bicarbonate solution
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Harja, M.; Ciobanu, G.; Juzsakova, T.; Cretescu, I. New Approaches in Modeling and Simulation of CO2 Absorption Reactor by Activated Potassium Carbonate Solution. Processes 2019, 7, 78.

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