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Evaluation of the parameters influencing electrostatic charging of powder in a pipe flow |
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| Institution: | 1. IATE, CIRAD, Montpellier SupAgro, INRA, Université de Montpelier, France;2. Laboratoire de Chimie Agro-industrielle, LCA, Université de Toulouse, INRA, Toulouse, France;3. Centre d''Application et de Traitement des Agroressources (CATAR), Université de Toulouse, INPT, Toulouse, France;4. AgroBiosciences Department, Mohammed VI Polytechnic University (UM6P), Benguerir, Morocco |
| Abstract: | Triboelectric charging of powders during pneumatic transport can lead to hazardous spark discharges. In this study, the charging process was studied numerically by means of large eddy simulations. A range of design parameters was then analyzed statistically applying the Design of Experiments methodology. It is shown that the electric charge of the powder can be significantly decreased by reducing the conveying air velocity. Furthermore, the usage of pipes of a larger diameter and the application of higher solid mass flow rates also reduce the powder charge. |
| Keywords: | Electrostatic charging Particulate flows Multiphase flows Explosion safety Large eddy simulation Design of Experiments |
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