Dynamic analysis of a continuous-flow microwave-assisted screw propeller system for biodiesel production

Abstract In order to overcome the apparent limitations of large-scale microwave processing, a microwave heating system with a screw propeller was utilized for biodiesel synthesis. To elucidate the heating dynamics and reaction process in the reactor, a comprehensive physics-based model was developed. A step-by-step algorithm based on implicit function, level set methods, and Arbitrary Lagrangian-Eulerian Formulation (ALE) machinery was proposed to compute the microwave heating process with chemical reaction and stirring. Material properties applied in the simulation were expressed as bivariate functions of the reaction solution’s component and temperature. The temperature and reactant concentration of the microwave reactor outlet were measured and compared to simulation results to validate the simulation model. By using the proposed model, the heating process with different rotating speeds, material composition (Teflon and metal), pitch, and blade widths of the screw propeller and inlet velocities were also calculated to determine their effect on the temperature distribution of the reactor.

[1]  G. W. C. Kaye,et al.  Tables of Physical and Chemical Constants , 2018 .

[2]  Ashim K. Datta,et al.  Modeling the heating uniformity contributed by a rotating turntable in microwave ovens , 2007 .

[3]  C. Oliver Kappe,et al.  Translating High-Temperature Microwave Chemistry to Scalable Continuous Flow Processes , 2010 .

[4]  Yang Yang,et al.  Dynamic analysis and simulation on continuous flow processing of biodiesel production in single-mode microwave cavity , 2016 .

[5]  George Keith Batchelor,et al.  An Introduction to Fluid Dynamics. , 1969 .

[6]  Liang-Liang Fan,et al.  Numerical simulation on the flow and heat transfer characteristics in the one-side heating helically coiled tubes , 2016 .

[7]  Younis Jamal,et al.  Production of biodiesel: A technical review , 2011 .

[8]  Farid Nasir Ani,et al.  A review on microwave-assisted production of biodiesel , 2012 .

[9]  Nick Serpone,et al.  On the Generation of Hot-Spots by Microwave Electric and Magnetic Fields and Their Impact on a Microwave-Assisted Heterogeneous Reaction in the Presence of Metallic Pd Nanoparticles on an Activated Carbon Support , 2011 .

[10]  Kama Huang,et al.  Thermal analysis on the process of microwave-assisted biodiesel production. , 2013, Bioresource technology.

[11]  Benjamin A. Wilhite,et al.  CONTINUOUS-FLOW PREPARATION OF BIODIESEL USING MICROWAVE HEATING , 2007 .

[12]  S. Assabumrungrat,et al.  Biodiesel production in a novel continuous flow microwave reactor , 2015 .

[13]  J. Tierney,et al.  Microwave assisted organic synthesis-a review , 2001 .

[14]  J. Hernando,et al.  Biodiesel and FAME synthesis assisted by microwaves: Homogeneous batch and flow processes , 2007 .

[15]  C. Kappe,et al.  Design and evaluation of improved magnetic stir bars for single-mode microwave reactors. , 2013, Organic & biomolecular chemistry.

[16]  Rodolfo Horacio Mascheroni,et al.  Modeling and process simulation of controlled microwave heating of foods by using of the resonance phenomenon , 2014 .

[17]  N. Perkas,et al.  Continuous flow through a microwave oven for the large-scale production of biodiesel from waste cooking oil. , 2017, Bioresource technology.

[18]  Christian Antonio,et al.  Comparison of linear and non-linear sweep rate regimes in variable frequency microwave technique for uniform heating in materials processing , 2005 .

[19]  Yanping Zhou,et al.  Implicit Function and Level Set Methods for Computation of Moving Elements During Microwave Heating , 2017, IEEE Transactions on Microwave Theory and Techniques.

[20]  D. Leung,et al.  A review on biodiesel production using catalyzed transesterification , 2010 .

[21]  Jie Xiao,et al.  Numerical simulation of milk fouling: Taking fouling layer domain and localized surface reaction kinetics into account , 2019, Chemical Engineering Science.

[22]  C. Oliver Kappe,et al.  Microwave‐Assisted Synthesis under Continuous‐Flow Conditions , 2007 .

[23]  Rattanachai Pairintra,et al.  Microwave assisted in continuous biodiesel production from waste frying palm oil and its performance in a 100 kW diesel generator , 2008 .

[24]  L. Costa,et al.  Electromagnetic and thermal history during microwave heating , 2011 .

[25]  Václav Sebera,et al.  Finite Element Analysis of Mode Stirrer Impact on Electric Field Uniformity in a Microwave Applicator , 2012 .

[26]  Huacheng Zhu,et al.  Dynamic analysis of continuous-flow microwave reactor with a screw propeller , 2017 .

[27]  María José Nieves-Remacha,et al.  Simulations and analysis of multiphase transport and reaction in segmented flow microreactors , 2017 .

[28]  A. Datta,et al.  Coupled electromagnetics, multiphase transport and large deformation model for microwave drying , 2016 .

[29]  Nicholas E. Leadbeater,et al.  Fast, Easy Preparation of Biodiesel Using Microwave Heating , 2006 .

[30]  Huacheng Zhu,et al.  The Effective Permittivity of Reacting Mixture Solutions for Multiphysics Calculations , 2012, Journal of Solution Chemistry.