Modelling of the effect of size on flocculent dust explosions |
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| Authors: | Paola Russo Paul R. Amyotte Faisal I. Khan Almerinda Di Benedetto |
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| Affiliation: | 1. Dipartimento di Ingegneria Chimica Materiali Ambiente, Università di Roma “La Sapienza”, Roma, Italy;2. Process Engineering & Applied Science, Dalhousie University, Halifax, NS, Canada;3. Process Engineering, Memorial University, St. John''s, NL, Canada;4. Dipartimento di Ingegneria Chimica, Università di Napoli Federico II, Napoli, Italy |
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| Abstract: | The effect of size on the severity of explosions involving flocculent materials has been simulated by means of a model previously developed for spherical particles and here extended to the cylindrical geometry of flock. The model consists of the identification of the regime (internal and external heating, pyrolysis/devolatilization reaction, and volatiles combustion) controlling the explosion by the evaluation of dimensionless numbers (Bi, Da, Th and Pc) and then of the estimation of the deflagration index as a function of flocculent size. The model has been validated by means of explosion data of polyamide 6.6 (nylon) at varying diameter and length. The comparison between model and experimental data show a fairly good agreement. |
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| Keywords: | Flocculent Nylon fibre Dust explosion Modelling Deflagration index |
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