Article (Scientific journals)
A discrete-continuous approach to describe CaCO3 decarbonation in non-steady thermal conditions
Estupinan Donoso, Alvaro Antonio; Peters, Bernhard; Copertaro, Edoardo et al.
2015In Powder Technology, 275, p. 131-138
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Keywords :
Computational Fluid Dynamics; CFD; Extended Discrete Element Method; XDEM; Soft sensors; thermal engineering
Abstract :
[en] In cement production, direct measurements of thermal and chemical variables are often unfeasible as a consequence of aggressive environments, moving parts and physical inaccessibility, and therefore prediction models are essential tools in these types of industrial applications. This article addresses the problem of the numerical prediction of the CaCO3 calcination process, which is the first and the most energy expensive process in clinker production. This study was conducted using the Extended Discrete Element Method (XDEM), a framework which allows a Eulerian approach for the gas phase to be combined with a Lagrange one for the powder phase. A detailed validation of the numerical model was performed by comparison to non-isothermal TG curves for mass loss during the CaCO3 decarbonation process. The complex three-dimensional predictions for solid and gas phases are believed to represent a first step towards a new insight into the cement production process. Thus, the high accuracy and detailed description of the problem addressed, serve as a basis to assess the uncertainty of more simplified models such as those used in soft sensors.
Disciplines :
Materials science & engineering
Author, co-author :
Estupinan Donoso, Alvaro Antonio  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Peters, Bernhard ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Copertaro, Edoardo
Chiariotti, Paolo
Paone, Nicola
Revel, Gian Marco
External co-authors :
yes
Language :
English
Title :
A discrete-continuous approach to describe CaCO3 decarbonation in non-steady thermal conditions
Publication date :
May 2015
Journal title :
Powder Technology
ISSN :
0032-5910
eISSN :
1873-328X
Publisher :
Elsevier Science, Lausanne, Switzerland
Volume :
275
Pages :
131-138
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
Available on ORBilu :
since 30 March 2015

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