Numerical evaluation of different pulverized coal and solid recovered fuel co-firing modes inside a large-scale cement calciner

Mikulčić, Hrvoje; Berg, Eberhard von; Vujanović, Milan; Wang, Xuebin; Tan, Houzhang; Duić, Neven

doi:10.1016/j.apenergy.2016.05.012

Cited by 37 publications

(9 citation statements)

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“…The detailed modeling process, along with reaction rates used for a devolatilization process, is described by Mikulčić et al. .

true {normalC}_{48} {normalH}_{18} {normalO}_{4} {normalN}_{2} \to^{normaldevolatilization} 3 normalCO + {normalH}_{2} + {normalH}_{2} normalO + {normalCH}_{4} + {normalC}_{6} {normalH}_{6} + normalHCN + {normalNH}_{3} + 37 normalC (s)

true {normalC}_{29} {normalH}_{55} {normalO}_{18} {normalN}_{2} \to^{normaldevolatilization} 12 normalCO + 16 {normalH}_{2} + 6 {normalH}_{2} normalO + {normalCH}_{4} + \frac{1}{2} {normalC}_{6} {normalH}_{6} + normalHCN + {normalNH}_{3} + 12 normalC (s)

…”

Section: Mathematical Modelsmentioning

confidence: 99%

“…The data used for biomass is given in a study by Wang et al [28] and for coal in Wang et al [29]. The detailed modeling process, along with reaction rates used for a devolatilization process, is described by Mikulčić et al [30].…”

Section: Coal and Biomass Combustionmentioning

confidence: 99%

“…Char combustion kinetics is modeled implementing the kinetics/diffusion-limited reaction model developed by Baum and Street [32], as described in our previous work [30].…”

Section: Coal and Biomass Combustionmentioning

confidence: 99%

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Improving Pulverized Coal and Biomass Co‐Combustion in a Cement Rotary Kiln by Computational Fluid Dynamics

et al. 2019

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The cement industry is one of the largest pollutant emitters. One way to cope with high pollutant emissions is to co‐combust biomass with pulverized coal. A mathematical model was developed, which is detailed enough to consider the complex physical and chemical behavior of the co‐combustion process but simple enough to perform simulations with a real geometry of cement rotary kiln within reasonable time. Numerical simulation with a 20‐% share of pulverized biomass of total fuel heating value was performed. An industrial rotary kiln geometry was simulated; temperature and velocity fields along with mass fractions of released volatiles and combustion products were analyzed. The model allows better insights in the co‐firing process with the main goal to reduce CO2 emissions by optimizing the combustion process inside the rotary kiln.

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“…The detailed modeling process, along with reaction rates used for a devolatilization process, is described by Mikulčić et al. .

true {normalC}_{48} {normalH}_{18} {normalO}_{4} {normalN}_{2} \to^{normaldevolatilization} 3 normalCO + {normalH}_{2} + {normalH}_{2} normalO + {normalCH}_{4} + {normalC}_{6} {normalH}_{6} + normalHCN + {normalNH}_{3} + 37 normalC (s)

true {normalC}_{29} {normalH}_{55} {normalO}_{18} {normalN}_{2} \to^{normaldevolatilization} 12 normalCO + 16 {normalH}_{2} + 6 {normalH}_{2} normalO + {normalCH}_{4} + \frac{1}{2} {normalC}_{6} {normalH}_{6} + normalHCN + {normalNH}_{3} + 12 normalC (s)

…”

Section: Mathematical Modelsmentioning

confidence: 99%

Section: Coal and Biomass Combustionmentioning

confidence: 99%

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Improving Pulverized Coal and Biomass Co‐Combustion in a Cement Rotary Kiln by Computational Fluid Dynamics

et al. 2019

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“…Its principle lies in the simulation of a certain number of rays that emit and absorb radiation energy -it is a model of radiation intensity I [W•m -3 ] change replaced by change in the trajectory s [m]: (6) where K a is the absorption coefficient [m…”

Section: Description Of the Applied Mathematical Modelsmentioning

confidence: 99%

“…[1][2][3][4]) and also continuum (e.g. [5,6]). The continuum is often simulated using the so-called Computational Fluid Dynamics (CFD) method.…”

Section: Introductionmentioning

confidence: 99%

Verifying the Prediction Result Reliability Using k-ε, Eddy Dissipation, and Discrete Transfer Models Applied on Methane Combustion Using a Prototype Low-Pressure Burner

Honus¹,

Pospíšilík²,

Jursová³

et al. 2017

Adv. Sci. Technol. Res. J.

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The article aims to verify the accuracy of a method to simulate the combustion chamber with a low-pressure prototype burner equipped with a specific "mixing element" and air baffle. The burner has an output of 4 kW and combusts methane. In detail, the article evaluates the accuracy of the final courses of temperatures and CO concentrations in the combustion chamber, which were obtained having combined the mathematical models k-ε, Eddy Dissipation and Discrete Transfer. CFD software CFX was used for the solution and visualisation of the results. The verification measurements imply that the final course of temperature plotted on the vertical axis of the combustion chamber differs from the real course by +21.7% on average. The predicted CO concentrations are relatively satisfactory in the chamber locations with lower temperatures -at the combustion chamber outlet the deviation from the measured value was +31.8%. Overall, the applied method may be considered acceptable to simulate the thermal field in a combustion chamber with the described burner.

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Shaping sustainable development to support human welfare

Mikulčić

Klemeš²,

Duić

2016

Clean Techn Environ Policy

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Numerical evaluation of different pulverized coal and solid recovered fuel co-firing modes inside a large-scale cement calciner

Cited by 37 publications

References 38 publications

Improving Pulverized Coal and Biomass Co‐Combustion in a Cement Rotary Kiln by Computational Fluid Dynamics

Improving Pulverized Coal and Biomass Co‐Combustion in a Cement Rotary Kiln by Computational Fluid Dynamics

Verifying the Prediction Result Reliability Using k-ε, Eddy Dissipation, and Discrete Transfer Models Applied on Methane Combustion Using a Prototype Low-Pressure Burner

Shaping sustainable development to support human welfare

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