Kinetic modeling of CO2 capture in calcium looping process in the presence of sulfur dioxide based on random pore and fractal-like models

Document Type : Research Article

Authors

1 Faculty of Chemical & Petroleum Engineering, University of Tabriz, Tabriz, Iran

2 Faculty of Chemical & Petroleum Engineering, University of Tabriz, Tabriz, Iran

Abstract

Carbon dioxide is the primary greenhouse gas and its capturing by the calcium looping process is considered as one of the most promising technologies to reduce the negative effects on climate change. Since the calcium looping process is carried out at temperature higher than 700oC, it is not always possible to perform experimental investigations of the reactions taking place in industrial scales at real conditions. Therefore, in this research, two kinetic models including random pore and fractal-like models were used for the modeling of carbonation and sulfation reactions. The results showed that due to the importance of the diffusion stage in the product layer, the difference between the experimental data and the ones predicted by the random pore model increased by passing time, and this difference was more increased under higher concentrations of sulfur dioxide. On the contrary, the fractal-like model with considering variable diffusion coefficients during the reaction time, presented a better accuracy. The fractal-like model was used to predict the carbonation and sulfation reactions conversions at cycles 5, 15, and 30, showing 60, 37, and 27% carbonation conversion, and 1.6, 1.3, and 1.1% sulfation conversion, respectively. In addition, the conversions were decreased during the consecutive cycles due to the decrease of capture capacity and specific surface area of ​​the adsorbent.

Keywords

Main Subjects

References

[1] S. Chen, C. Qin, T. Deng, J. Yin, J. Ran, Particle-scale modeling of the simultaneous carbonation and sulfation in calcium looping for CO2 capture, Separation and Purification Technology, 252 (2020) 117439.
[2] V. Manovic, E.J. Anthony, Competition of sulphation and carbonation reactions during looping cycles for CO2 capture by CaO-based sorbents, The Journal of Physical Chemistry A, 114(11) (2010) 3997-4002.
[3] M. Anwar, A. Fayyaz, N. Sohail, M. Khokhar, M. Baqar, W. Khan, K. Rasool, M. Rehan, A. Nizami, CO2 capture and storage: A way forward for sustainable environment, Journal of environmental management, 226 (2018) 131-144.
[4] Y.-q. GENG, Y.-x. GUO, F. Biao, F.-q. CHENG, H.-g. CHENG, Research progress of calcium-based adsorbents for CO2 capture and anti-sintering modification, Journal of Fuel Chemistry and Technology, 49(7) (2021) 998-1013.
[5] M.T. F. Sattari, M.M. , Modeling the Calcium Looping Process with an Emphasis on the Bed Hydrodynamics and Sorbent Characteristics, Amirkabir Journal of Mechanical Engineering, 53(5) (2021) 2807-2820 in Persian.
[6] M. Erans, V. Manovic, E.J. Anthony, Calcium looping sorbents for CO2 capture, Applied Energy, 180 (2016) 722-742.
[7] C. Qin, D. He, Z. Zhang, L. Tan, J. Ran, The consecutive calcination/sulfation in calcium looping for CO2 capture: Particle modeling and behaviour investigation, Chemical Engineering Journal, 334 (2018) 2238-2249.
[8] G.S. Grasa, J.C. Abanades, M. Alonso, B. González, Reactivity of highly cycled particles of CaO in a carbonation/calcination loop, Chemical Engineering Journal, 137(3) (2008) 561-567.
[9] B. Azimi, M. Tahmasebpoor, P.E. Sanchez-Jimenez, A. Perejon, J.M. Valverde, Multicycle CO2 capture activity and fluidizability of Al-based synthesized CaO sorbents, Chemical Engineering Journal, 358 (2019) 679-690.
[10] J. Cai, S. Wang, C. Kuang, Modeling of carbonation reaction for CaO-based limestone with CO2 in multitudinous calcination-carbonation cycles, International Journal of Hydrogen Energy, 42(31) (2017) 19744-19754.
[11] J. Cordero, M. Alonso, Modelling of the kinetics of sulphation of CaO particles under CaL reactor conditions, Fuel, 150 (2015) 501-511.
[12] L. Fedunik-Hofman, A. Bayon, S.W. Donne, Kinetics of solid-gas reactions and their application to carbonate looping systems, Energies, 12(15) (2019) 2981.
[13] S. Chen, C. Qin, J. Yin, X. Zhou, S. Chen, J. Ran, Understanding sulfation effect on the kinetics of carbonation reaction in calcium looping for CO2 capture, Fuel Processing Technology, 221 (2021) 106913.
[14] T. Maparanyanga, D. Lokhat, Modelling of a calcium-looping fluidized bed reactor system for carbon dioxide removal from flue gas, International Journal of Low-Carbon Technologies, 16(3) (2021) 691-703.
[15] H.S. Nygård, N.A.R. Ruud, E. Olsen, Investigation of Sulfation of CaO and CaCO3 in Eutectic CaF2–CaCl2, Energy & Fuels, 36(12) (2022) 6343-6352.
[16] A. Coppola, A. Esposito, F. Montagnaro, M. Iuliano, F. Scala, P. Salatino, The combined effect of H2O and SO2 on CO2 uptake and sorbent attrition during fluidised bed calcium looping, Proceedings of the Combustion Institute, 37(4) (2019) 4379-4387.
[17] S.K. Bhatia, D. Perlmutter, A random pore model for fluid‐solid reactions: I. Isothermal, kinetic control, AIChE Journal, 26(3) (1980) 379-386.
[18] F. Montagnaro, M. Balsamo, P. Salatino, A single particle model of lime sulphation with a fractal formulation of product layer diffusion, Chemical Engineering Science, 156 (2016) 115-120.
[19] A. Scaltsoyiannes, A. Lemonidou, CaCO3 decomposition for calcium-looping applications: Kinetic modeling in a fixed-bed reactor, Chemical Engineering Science: X, 8 (2020) 100071.
[20] M.C. Romano, Modeling the carbonator of a Ca-looping process for CO2 capture from power plant flue gas, Chemical Engineering Science, 69(1) (2012) 257-269.
[21] S. Stendardo, P.U. Foscolo, Carbon dioxide capture with dolomite: a model for gas–solid reaction within the grains of a particulate sorbent, Chemical Engineering Science, 64(10) (2009) 2343-2352.
[22] M. Balsamo, F. Montagnaro, Fractal-like Vermeulen kinetic equation for the description of diffusion-controlled adsorption dynamics, The Journal of Physical Chemistry C, 119(16) (2015) 8781-8785.
[23] M. Balsamo, F. Montagnaro, Fractal-like random pore model applied to CO2 capture by CaO sorbent, Chemical Engineering Science, 254 (2022) 117649.
Amirkabir Journal of Mechanical Engineering
Volume 55, Issue 5
August 2023
Pages 659-674

Files

Share

How to cite

Statistics