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Investigation of convection and diffusion during biodiesel production in packed membrane reactor using 3D simulation
Affiliation:1. Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. SCION, Te Papa Tipu Innovation Park, 49 Sala Street, Private Bag 3020, Rotorua, New Zealand;1. Lutsk National Technical University, Lvivska Str. 75, 43018 Lutsk, Ukraine;2. Bialystok University of Technology, Wiejska Str. 45C, 15-351 Bialystok, Poland;1. Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya 60114, Indonesia;2. Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Sec. 4, Keelung Rd., Taipei 106-07, Taiwan, ROC;1. University of Novi Sad, Faculty of Agriculture, 21000 Novi Sad, Trg Dositeja Obradovića 8, Serbia;2. Scientific-Technological Center, NIS-Naftagas, Put Šajkaškog Odreda 9, Novi Sad, Serbia;3. Faculty of Technology, University of Novi Sad, Bul. cara Lazara 1, Novi Sad, Serbia;1. Computational Process Engineering Research Unit, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;2. Center of Excellence in Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
Abstract:The 3D simulation of convection and diffusion phenomena within a ceramic membrane during transesterification reaction was the aim of this study. The ceramic membrane was a tubular micro porous TiO2/Al2O3 packed with the heterogeneous catalyst. The Navier–Stokes, Brinkman and Stephan–Maxwell equations were applied for investigation of fluid flow reaction and mass transfer within the system. The value of the convection was generally between 104 and 107 times higher than diffusion. It depends on concentration component, the diffusion coefficient and components velocity. A good agreement was found with the maximum deviation of 8% from experimental data.
Keywords:Transesterification  Membrane reactor  Computational fluid dynamics (CFD)  Brinkman equations  Stephan–Maxwell equation
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