Application of the dynamic model of Saeman to an industrial rotary kiln incinerator: Numerical and experimental results |
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| Authors: | LG Ndiaye S Caillat A Chinnayya D Gambier B Baudoin |
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| Institution: | 1. Univ Lille Nord de France, F-59000 Lille, France;2. EMDouai, EI, F-59500 Douai, France;3. CORIA, UMR CNRS 6614, F-76801 Saint Etienne du Rouvray, Rouen, France;4. Maguin SAS, 2, Rue Pierre Sémard, F-02800 Charmes, France;1. Laboratory of Combustion and Green Technologies, Department of Energetic Engineering, University Institute of Technology, University of Ngaoundere, P.O. Box 455, Cameroon;2. Department of Physics, Faculty of Sciences, University of Yaounde 1, Cameroon;3. Institut Pprime, UPR 3346 du CNRS, ENSMA, Poitiers, France;1. Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA;2. Mechanical and Aerospace Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA;3. School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287, USA;4. BASF Corporation, 25 Middlesex-Essex Turnpike, Iselin, NJ 08830, USA;1. Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Complesso Universitario di Monte Sant’Angelo, 80126 Napoli, Italy;2. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Vincenzo Tecchio 80, 80125 Napoli, Italy;3. Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche, Piazzale Vincenzo Tecchio 80, 80125 Napoli, Italy |
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| Abstract: | In order to simulate granular materials structure in a rotary kiln under the steady-state regime, a mathematical model has been developed by Saeman (1951). This model enables the calculation of the bed profiles, the axial velocity and solids flow rate along the kiln. This model can be coupled with a thermochemical model, in the case of a reacting moving bed. This dynamic model was used to calculate the bed profile for an industrial size kiln and the model projections were validated by measurements in a 4 m diameter by 16 m long industrial rotary kiln. The effect of rotation speed under solids bed profile and the effect of the feed rate under filling degree were established. On the basis of the calculations and the experimental results a phenomenological relation for the residence time estimation was proposed for the rotary kiln. |
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