Review—calcination and carbonation of limestone during thermal cycling for CO2 sequestration

Stanmore, B. R.; Gilot, P.

doi:10.1016/j.fuproc.2005.01.023

Cited by 459 publications

(288 citation statements)

References 72 publications

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“…These discrepancies were already noted by Stanmore and Gilot [13] in 2005 in a review on calcination and carbonation, in which they highlighted 'the need for a realistic model of the process taking place in the particles', a view maintained in subsequent papers [14][15][16][17].…”

Section: 1mentioning

confidence: 99%

Kinetic study of the thermal decomposition process of calcite particles in air and CO2 atmosphere

Escardino

García-Ten

Feliú

et al. 2013

Journal of Industrial and Engineering Chemistry

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The thermal decomposition process of calcite particles (0.45-3.60 mm of average diameter), made up of porous agglomerates of very small CaCO 3 microcrystals has been studied in the 975-1216 K temperature range under isothermal conditions in presence of mixtures of air and carbon dioxide with different compositions.An equation, which relates the calcite conversion degree with both reaction time and operating conditions, has been proposed. The equation satisfactorily fits to the experimental results obtained in the entire tested range of particle sizes and of temperatures in all the range of carbon dioxide concentrations studied.

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Section: 1mentioning

confidence: 99%

Kinetic study of the thermal decomposition process of calcite particles in air and CO2 atmosphere

Escardino

García-Ten

Feliú

et al. 2013

Journal of Industrial and Engineering Chemistry

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“…Accordingly, solid sorbent materials have been proposed for capture of CO 2 through a reversible chemical transformation. Among them, alkali and alkaline metal oxide based solid sorbents can play an important role for CO 2 capture as they can be used over a wide temperature range (Stamnore and Gilot, 2005;Lee et al, 2006;Lee and Kim, 2007;Siriwardane et al, 2007;Lee et al, 2008;Sorescu, 2009, 2010;Duan et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

ab initio Thermodynamic Study of the CO2 Capture Properties of M2CO3 (M = Na, K)- and CaCO3-Promoted MgO Sorbents Towards Forming Double Salts

Duan

Zhang

et al. 2014

Aerosol Air Qual. Res.

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The CO 2 capture properties of M 2 CO 3 (M = Na, K)-promoted and CaCO 3 -promoted MgO sorbents are investigated by first-principles density functional theory complemented with lattice phonon calculations. The calculated thermodynamic properties indicate that by forming double salts (M 2 Mg(CO 3 ) 2 and CaMg(CO 3 ) 2 ), compared to pure MgO, the maximum allowable CO 2 capture temperatures of the M 2 CO 3 -and CaCO 3 -modified MgO sorbents are shifted to higher temperature ranges. Under pre-combustion conditions with P CO 2 = 10 bar, the Na 2 CO 3 -promoted and CaCO 3 -promoted MgO sorbents can capture CO 2 at temperatures as high as 915 K and 740 K respectively. While under post-combustion conditions with P CO 2 = 0.1 bar, their maximum allowable CO 2 capture temperatures are 710 K and 600 K respectively. However, when adding K 2 CO 3 into MgO, under both pre-and post-combustion conditions, its maximum CO 2 capture temperatures only increased about 10 K relative to pure MgO. These results indicate that by mixing another solid into MgO, it is possible to shift its CO 2 capture temperature to fit practical industrial needs.

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“…All of the calculations have been done with the same set of model parameters using the value of 6 for tortuosity (Wang et al, 2005), 0.2 for void fraction and 5eÀ 8m for pore diameter. In the literature (Bluhm-Drenhaus et al, 2010;Stanmore and Gilot, 2005) higher values for the void fraction in the range of 0.36-0.68 are given. The lower value of 0.2 assumed in this work can be justified by sintering processes as described by Hillers (2008), which can reduce again the porosity considerably to values down to 0.05 depending on temperature and particle residence time.…”

Section: Resultsmentioning

confidence: 99%

“…The calcination process starts only if the partial pressure of carbon dioxide in the gas surrounding the limestone surface is less than the decomposition pressure of limestone (Stanmore and Gilot, 2005). The decomposition pressure P eq and the chemical reaction rate k ch of the calcination process determined by Silcox et al (1989) are…”

Section: Calcination Reaction Mechanismmentioning

confidence: 99%

“…combustion products and exhaust gases from the rotary kiln) supplied to the limestone particle by convection and radiation, pre-heats the particle from the ambient temperature to the decomposition temperature. The decomposition temperature reported in the literature (Stanmore and Gilot, 2005) is in the temperature range from 600 1C to 900 1C, depending on the type of limestone; (b) at the decomposition temperature, when the pressure of carbon dioxide produced by the decomposition of limestone at the particle surface is greater than the partial pressure of carbon dioxide in the surrounding gas, the process of calcination begins, making a lime shell around the limestone core; (c) by conduction the heat passes through the porous layer increasing the internal temperature, which causes continued calcination. The released carbon dioxide diffuses through the porous layer to the surface and by convection is released into the calciner.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical modelling of calcination reaction mechanism for cement production

Mikulčić

Berg

Vujanović

et al. 2012

Chemical Engineering Science

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a b s t r a c tCalcination is a thermo-chemical process, widely used in the cement industry, where limestone is converted by thermal decomposition into lime CaO and carbon dioxide CO 2 . The focus of this paper is on the implementation and validation of the endothermic calcination reaction mechanism of limestone in a commercial finite volume based CFD code. This code is used to simulate the turbulent flow field, the temperature field, concentrations of the reactants and products, as well as the interaction of particles with the gas phase, by solving the mathematical equations, which govern these processes. For calcination, the effects of temperature, decomposition pressure, diffusion and pore efficiency were taken into account. A simple three-dimensional geometry of a pipe reactor was used for numerical simulations. To verify the accuracy of the modelling approach, the numerical predictions were compared with experimental data, yielding satisfying results and proper trends of physical parameters influencing the process.

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Review—calcination and carbonation of limestone during thermal cycling for CO2 sequestration

Cited by 459 publications

References 72 publications

Kinetic study of the thermal decomposition process of calcite particles in air and CO2 atmosphere

Kinetic study of the thermal decomposition process of calcite particles in air and CO2 atmosphere

ab initio Thermodynamic Study of the CO2 Capture Properties of M2CO3 (M = Na, K)- and CaCO3-Promoted MgO Sorbents Towards Forming Double Salts

Numerical modelling of calcination reaction mechanism for cement production

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