NOX reduction in calciner using air staging and raw meal split technology

Kinekar, Shubham; Mone, Shital; Taqi, Adnan; Mane, Pravin; Gawali, B. S.; Vitankar, Vivek

doi:10.1016/j.matpr.2020.12.143

Materials Today: Proceedings

2021

DOI: 10.1016/j.matpr.2020.12.143

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NOX reduction in calciner using air staging and raw meal split technology

Shubham Kinekar¹,

Shital Mone²,

Adnan Taqi³

et al.

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2024

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Cited by 2 publications

References 11 publications

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Optimizing Nitrogen Oxide Emissions in Industrial Calcination through Staged Combustion: A CFD-, MP-PIC-, and RSM-Based Approach for Enhanced Process Efficiency

Wang,

Shui,

Yin

et al. 2024

Ind. Eng. Chem. Res.

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This study develops a comprehensive numerical model employing computational fluid dynamics for the precise prediction of nitrogen oxide (NO) formation and reduction in industrial-scale calciners. Through the integration of Euler–Lagrange and multiphase particle in cell methods with a global chemical kinetic reaction model, it explores the complex dynamics of NO migration and mitigation strategies. The research validates the model against empirical data from a cement plant, revealing the limited impact of traditional staged combustion due to the reduction zone’s size constraints. By extending the calciner structure and optimizing operational parameters such as the coal feed ratio and the O2 concentration, identified through response surface analysis, the study successfully reduces NO concentrations to approximately 310 ppm. These findings contribute significantly to the field of environmental engineering by offering a validated approach for improving low-nitrogen combustion in cement manufacturing. The advancements demonstrated in this research provide a solid foundation for further innovation in combustion technology, aiming at more efficient and environmentally sustainable industrial applications.

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Optimizing Nitrogen Oxide Emissions in Industrial Calcination through Staged Combustion: A CFD-, MP-PIC-, and RSM-Based Approach for Enhanced Process Efficiency

Wang,

Shui,

Yin

et al. 2024

Ind. Eng. Chem. Res.

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Numerical Modeling of Heat Transfer and Flow Field in a Novel Calcinator

Zhou,

Yang,

Wang

2024

Polish Journal of Chemical Technology

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This study focused on investigating the heat transfer and flow dynamics of a catalyst granule within a pilot calciner, employing both numerical modeling and computational fluid dynamics. The research comprised two primary components: (1) Simulation of the gas flow within the pilot calciner using the Eulerian–Eulerian approach, treating gases and catalyst particles as distinct phases – gas and granular. The model, encapsulating both heat transfer and flow processes, was developed in Fluent software version 16.0. Its accuracy was confirmed against empirical data from a pilot-scale calciner unit. (2) Subsequent to validation, the model was utilized to examine the distribution characteristics within the flow field, including the temperature profiles of gas and particles, the vector velocity field of the gas across different phases, and the overall heat transfer coefficient. This investigation aims to enhance the understanding of the complex heat transfer and flow dynamics in calciners, facilitating the optimization of operational parameters, performance, and structure of pilot-scale equipment. Furthermore, it provides foundational data pertinent to the future exploration of real-world industrial applications.

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NOX reduction in calciner using air staging and raw meal split technology

Cited by 2 publications

References 11 publications

Optimizing Nitrogen Oxide Emissions in Industrial Calcination through Staged Combustion: A CFD-, MP-PIC-, and RSM-Based Approach for Enhanced Process Efficiency

Optimizing Nitrogen Oxide Emissions in Industrial Calcination through Staged Combustion: A CFD-, MP-PIC-, and RSM-Based Approach for Enhanced Process Efficiency

Numerical Modeling of Heat Transfer and Flow Field in a Novel Calcinator

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