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A fan‐equipped reactor for dust explosion tests
Authors:Almerinda Di Benedetto  Paola Russo  Roberto Sanchirico  Valeria Di Sarli
Affiliation:1. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi Federico II, Napoli, Italy;2. Dipartimento di Ingegneria Chimica Materiali Ambiente, Sapienza Università di Roma, Roma, Italy;3. Istituto di Ricerche sulla Combustione ‐ Consiglio Nazionale delle Ricerche (IRC‐CNR), Napoli, Italy
Abstract:A Computational Fluid Dynamics (CFD) model was developed with the aim at simulating the turbulent flow field and associated dust dispersion in an agitated spherical explosion vessel. Simulations were performed in the presence of two counter‐rotating fans and also after having switched‐off the fans. Numerical results have shown that the dust mainly accumulates at the center of the sphere in the space left by the four vortices formed. After the switch‐off of the fans, the dust particles start filling the empty volumes inside the sphere, reaching a quite uniform distribution (with concentration equal to the nominal value) and simultaneously ensuring a controlled value of turbulent kinetic energy. © 2015 American Institute of Chemical Engineers AIChE J, 61: 1572–1580, 2015
Keywords:process safety  dust explosion  CFD simulations  20 L explosion vessel  turbulence  dust dispersion
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