<abstract xmlns="http://www.w3.org/1999/xhtml">In this work, a modified random pore model was developed to study the kinetics of the carbonation reaction of CaO. Pore size distributions of the CaO pellets were measured by nitrogen adsorption and mercury porosimetry methods. The experiments were carried out in a thermogravimeter at different isothermal temperatures and CO2 partial pressures. A fractional concentration dependency function showed the best accuracy for predicting the intrinsic rate of reaction. The activation energy was determined as 11 kcal/mole between 550–700°C. The effect of product layer formation was also taken into account by using the variable product layer diffusivity. Also, the model was successfully predicted the natural lime carbonation reaction data extracted from the literature.</abstract>

In this work, a modified random pore model was developed to study the kinetics of the carbonation reaction of CaO. Pore size distributions of the CaO pellets were measured by nitrogen adsorption and mercury porosimetry methods. The experiments were carried out in a thermogravimeter at different isothermal temperatures and CO2 partial pressures. A fractional concentration dependency function showed the best accuracy for predicting the intrinsic rate of reaction. The activation energy was determined as 11 kcal/mole between 550–700°C. The effect of product layer formation was also taken into account by using the variable product layer diffusivity. Also, the model was successfully predicted the natural lime carbonation reaction data extracted from the literature.

Kinetic study of CO2 reaction with CaO by a modified random pore model

Hakim Sabzevari University, Chemical Engineering Department, Sabzevar, 9617976487, Iran

Amirkabir University of Technology, Chemical Engineering Department, Petrochemical Centre of Excellency, Tehran, 15875-4413, Iran

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Kinetic study of CO reaction with CaO by a modified random pore model

In this work, a modified random pore model was developed to study the kinetics of the carbonation reaction of CaO. Pore size distributions of the CaO pellets...

Kinetic study of CO₂ reaction with CaO by a modified random pore model

Online veröffentlicht: 04. Apr. 2016

Seitenbereich: 93 - 98

DOI: https://doi.org/10.1515/pjct-2016-0014

Schlüsselwörter
carbonation reaction, calcium oxide, mathematical modeling, random pore model, pore size distribution

© 2016 S.M.M. Nouri et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Kinetic study of CO2 reaction with CaO by a modified random pore model

Online veröffentlicht: 04. Apr. 2016

Seitenbereich: 93 - 98

DOI: https://doi.org/10.1515/pjct-2016-0014

Schlüsselwörtercarbonation reaction, calcium oxide, mathematical modeling, random pore model, pore size distribution

© 2016 S.M.M. Nouri et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Kinetic study of CO₂ reaction with CaO by a modified random pore model

Schlüsselwörter
carbonation reaction, calcium oxide, mathematical modeling, random pore model, pore size distribution