A Discrete-Continuous Method for Predicting Thermochemical Phenomena in a Cement Kiln and Supporting Indirect Monitoring

  • Edoardo Copertaro Université du Luxembourg
  • Paolo Chiariotti Università Politecnica delle Marche
  • Alvaro Antonio Estupinan Donoso Université du Luxembourg
  • Nicola Paone Università Politecnica delle Marche
  • Bernhard Peters Universitè du Luxembourg
  • Gian Marco Revel Università Politecnica delle Marche

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Abstract

Thermochemical phenomena involved in cement kilns are still not well understood because of their complexity, besides technical difficulties in achieving direct measurements of critical process variables. This article addresses the problem of their comprehensive numerical prediction. The presented numerical model exploits Computational Fluid Dynamics and Finite Difference Method approaches for solving the gas domain and the rotating wall, respectively. The description of the thermochemical conversion and movement of the powder particles is addressed with a Lagrangian approach. Coupling between gas, particles and the rotating wall includes momentum, heat and mass transfer. Three-dimensional numerical predictions for a full-size cement kiln are presented and they show agreement with experimental data and benchmark literature. The quality and detail of the results are believed to provide a new insight into the functioning of a cement kiln. Attention is paid to the computational burden of the model and a methodology is presented for reducing the time-to-solution and paving the way for its exploitation in quasi-real-time, indirect monitoring.

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Author Biographies
Edoardo Copertaro

Université du Luxembourg, Faculté des Sciences, de la Technologie et de la Communication, Avenue de l’Université, L-4365, Esch-sur-Alzette, Luxembourg

Paolo Chiariotti

Università Politecnica delle Marche, Dipartimento di Ingegneria Meccanica e Scienze Matematiche, Via Brecce Bianche 12, 60131, Ancona, Italy

Alvaro Antonio Estupinan Donoso

Université du Luxembourg, Faculté des Sciences, de la Technologie et de la Communication, Avenue de l’Université, L-4365, Esch-sur-Alzette, Luxembourg

Nicola Paone

Università Politecnica delle Marche, Dipartimento di Ingegneria Meccanica e Scienze Matematiche, Via Brecce Bianche 12, 60131, Ancona, Italy

Bernhard Peters

Université du Luxembourg, Faculté des Sciences, de la Technologie et de la Communication, Avenue de l’Université, L-4365, Esch-sur-Alzette, Luxembourg

Gian Marco Revel

Università Politecnica delle Marche, Dipartimento di Ingegneria Meccanica e Scienze Matematiche, Via Brecce Bianche 12, 60131, Ancona, Italy

Published
Vol 22 No 6, Dec 4, 2018
How to Cite
E. Copertaro, P. Chiariotti, A. A. Estupinan Donoso, N. Paone, B. Peters, and G. M. Revel, “A Discrete-Continuous Method for Predicting Thermochemical Phenomena in a Cement Kiln and Supporting Indirect Monitoring”, Eng. J., vol. 22, no. 6, pp. 165-183, Dec. 2018.

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