Mathematical Modelling of Microwave Pyrolysis
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and
Abstract
This study deals with a detailed numerical investigation of the microwave heating process in plastic pyrolysis. The pyrolysis of high-density polyethylene (HDPE) was studied using a single-mode microwave cavity, TE10 mode, at 2.45 GHz with two different absorbents, as carbon and silicon carbide, and the results were compared. The temperature distribution inside the sample was determined by solving the conservation equations coupled with the microwave and chemical kinetic equations. Lambert’s law was applied to describe the electromagnetic field in the microwave cavity. The effective heat capacity method was used to account for the latent heat in the melting range of plastic. The heat of the reaction was taken into account using first-order kinetic equations assuming a single-step reaction. One-dimensional model equations were solved using the finite difference method utilising MATLAB codes. The model developed in this study provides a better understanding of the fundamental mechanisms of the microwave pyrolysis of HDPE based on a combination of electromagnetic field and thermal models. The primary focus was to incorporate and investigate the effect of the phase changes and reaction during microwave pyrolysis. The results show that the temperature profile strongly depends on the physical properties of the material. Silicon carbide provides more uniform heating distribution compared with carbon.
References
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Articles in the same Issue
- Masthead
- Masthead
- Efficient Synthesis of 1-Acetylpyrene Using [Bmim]Cl–FeCl3 Ionic Liquid as Dual Catalyst and Solvent
- Ethanol Steam Reforming for Hydrogen Production in Microchannel Reactors: Experimental Design and Optimization
- Modeling NOx Adsorption onto Fe/ZSM-5 Catalysts in a Fixed Bed Reactor
- Multistep Optimization and Residue Disposal Study for Electrochemical Treatment of Textile Wastewater Using Aluminum Electrode
- Effect of Vibrating Sparger on Mass Transfer, Gas Holdup, and Bubble Size in a Bubble Column Reactor
- Production of Silicon from SiH4 in a Fluidized Bed, Operation and Results
- Reforming of Glycerol into Bio-Crude: A Parametric Study
- Hydrodynamic and Mass Transfer Characteristics in a Large-Scale Slurry Bubble Column Reactor for Gas Mixtures in Actual Fischer–Tropsch Cuts
- Optimization of l-Asparaginase Production by Isolated Aspergillus niger C4 from Sesame (black) Oil Cake under SSF using Box–Behnken Design in Column Bioreactor
- Simplified Kinetic Model for Thermal Combustion of Lean Methane–Air Mixtures in a Wide Range of Temperatures
- Identification and Optimization of Recombinant E. coli Fed-Batch Fermentation Producing γ-Interferon Protein
- A Comparison of Monomeric Phenols Produced from Lignin by Fast Pyrolysis and Hydrothermal Conversions
- Design and Optimization of a Fixed Bed Reactor for Direct Dimethyl Ether Production from Syngas Using Differential Evolution Algorithm
- Conversion Enhancement of Fixed-Bed Reactors Using Two-Dimensional Hollow Cylindrical Catalyst Pellet
- Bubble Columns with Internals: A Review
- A Historic Review on R&D of China’s FCC Riser Termination Device Technologies
- Recent Advances of Spout-Fluid Bed: A Review of Fundamentals and Applications
- Ethanol Catalytic Oxidation on Ordered Mesoporous CuO/KIT-6 Catalyst
- A Novel Kinetics Study on H2O2 Decomposition inthe Propylene Epoxidation System in a Fixed-Bed Reactor
- Implementation of Homotopy Perturbation Method to Solve a Population Balance Model in Fluidized Bed
- Experimental Research on Utilization of Steel Rolling Sludge in Sintering Process
- Application of Honey-Bee Mating Optimization to Naphtha Reforming Reactor
- Modeling and Simulation of a Fischer–Tropsch Slurry Bubble Column Reactor Using Different Kinetic Rate Expressions for Iron and Cobalt Catalysts
- Solids Suspension Study in a Side-Entering Stirred Tank Through CFD Modeling
- Triphase Catalysis Using Silica Gel as Support
- Enhanced Trichloroethylene CatalyticOxidation on Modified Lanthanum Manganite ano-Perovskites
- A Novel Reactor for Microwave Hydrothermal Scale-up Nanopowder Synthesis
- Production of Amino and Organic Acids from Protein Using Sub-Critical Water Technology
- Purification of Crude Glycerine Obtained from Transesterification of Cottonseed Oil
- Predicting the Liquid Film Thickness and Droplet–Gas Flow in Effervescent Atomization: Influence of Operating Conditions and Fluid Viscosity
- Zinc-Modified MCM-22 as Potential Solid acid Catalyst for Friedel–Crafts Alkylation Reaction
- Dynamic Characteristics and Speed Control Strategy of Cellulose Hydrolysis Reactor at High Solids Loading
- Kinetic Study of Light Mercaptans in the Presence of Merox Catalyst and Caustic Soda
- Applications of Feed-Forward Neural Network to Study Irregular-Shape Particle Effects on Hydrodynamics Behavior in a Liquid–Solid Circulating Fluidized Bed Riser
- Experimental Investigation on the Translational and Rotational Motion of Biomass Particle in a Spout-Fluid Bed
- Industrial Methanol from Syngas: Kinetic Study and Process Simulation
- Study of Co-pyrolysis Characteristics of Lignite and Rice Husk in a TGA and a Fixed-Bed Reactor
- Exergy Analysis of Oxidative Steam Reforming of Methanol for Hydrogen Producton: Modeling Study
- Lead (II) Pollution Enhances the Binding of Transgenic Toxin in Brown and Red Soils: Equilibrium and Kinetics
- Influence of a Second Liquid Phase upon Carbon Dioxide Chemical Absorption
- Brackish Water Desalination by Electrodialysis: CaCO3 Scaling Monitoring During Batch Recirculation Operation
- The Effect of TiO2 Contained within a Titanium Silicalite (TS-1) Catalyst and on the Selective Oxidation of Ammonia
- Understanding Pt–Rh Synergy in a Three-Way Catalytic Converter
- Mathematical Modelling of Microwave Pyrolysis
- Photocatalytic Purification of Wastewater Polluted by Odorant Sulfur Compounds Using Titanium Oxide in a Continuous Photoreactor
- Adsorption Kinetics of Oxytetracycline onto Activated Carbon in a Closed-Loop Fixed Bed Reactor
- Catalytic Wet Peroxide Oxidation of Chlorophenol Over a Ce0.86Cu0.14–xO2 Catalyst
- Chemical Reaction Effect upon Gas–Liquid Interfacial Area in a Bubble Column Reactor
- Comparative Studies on Nitrophenol Removal byAdsorption and Simultaneous Adsorption-Biodegradation Processes
- Ultrasound-Assisted Enzymatic Synthesis of Poly-ε-Caprolactone: Kinetic Behavior and ReactorDesign
Articles in the same Issue
- Masthead
- Masthead
- Efficient Synthesis of 1-Acetylpyrene Using [Bmim]Cl–FeCl3 Ionic Liquid as Dual Catalyst and Solvent
- Ethanol Steam Reforming for Hydrogen Production in Microchannel Reactors: Experimental Design and Optimization
- Modeling NOx Adsorption onto Fe/ZSM-5 Catalysts in a Fixed Bed Reactor
- Multistep Optimization and Residue Disposal Study for Electrochemical Treatment of Textile Wastewater Using Aluminum Electrode
- Effect of Vibrating Sparger on Mass Transfer, Gas Holdup, and Bubble Size in a Bubble Column Reactor
- Production of Silicon from SiH4 in a Fluidized Bed, Operation and Results
- Reforming of Glycerol into Bio-Crude: A Parametric Study
- Hydrodynamic and Mass Transfer Characteristics in a Large-Scale Slurry Bubble Column Reactor for Gas Mixtures in Actual Fischer–Tropsch Cuts
- Optimization of l-Asparaginase Production by Isolated Aspergillus niger C4 from Sesame (black) Oil Cake under SSF using Box–Behnken Design in Column Bioreactor
- Simplified Kinetic Model for Thermal Combustion of Lean Methane–Air Mixtures in a Wide Range of Temperatures
- Identification and Optimization of Recombinant E. coli Fed-Batch Fermentation Producing γ-Interferon Protein
- A Comparison of Monomeric Phenols Produced from Lignin by Fast Pyrolysis and Hydrothermal Conversions
- Design and Optimization of a Fixed Bed Reactor for Direct Dimethyl Ether Production from Syngas Using Differential Evolution Algorithm
- Conversion Enhancement of Fixed-Bed Reactors Using Two-Dimensional Hollow Cylindrical Catalyst Pellet
- Bubble Columns with Internals: A Review
- A Historic Review on R&D of China’s FCC Riser Termination Device Technologies
- Recent Advances of Spout-Fluid Bed: A Review of Fundamentals and Applications
- Ethanol Catalytic Oxidation on Ordered Mesoporous CuO/KIT-6 Catalyst
- A Novel Kinetics Study on H2O2 Decomposition inthe Propylene Epoxidation System in a Fixed-Bed Reactor
- Implementation of Homotopy Perturbation Method to Solve a Population Balance Model in Fluidized Bed
- Experimental Research on Utilization of Steel Rolling Sludge in Sintering Process
- Application of Honey-Bee Mating Optimization to Naphtha Reforming Reactor
- Modeling and Simulation of a Fischer–Tropsch Slurry Bubble Column Reactor Using Different Kinetic Rate Expressions for Iron and Cobalt Catalysts
- Solids Suspension Study in a Side-Entering Stirred Tank Through CFD Modeling
- Triphase Catalysis Using Silica Gel as Support
- Enhanced Trichloroethylene CatalyticOxidation on Modified Lanthanum Manganite ano-Perovskites
- A Novel Reactor for Microwave Hydrothermal Scale-up Nanopowder Synthesis
- Production of Amino and Organic Acids from Protein Using Sub-Critical Water Technology
- Purification of Crude Glycerine Obtained from Transesterification of Cottonseed Oil
- Predicting the Liquid Film Thickness and Droplet–Gas Flow in Effervescent Atomization: Influence of Operating Conditions and Fluid Viscosity
- Zinc-Modified MCM-22 as Potential Solid acid Catalyst for Friedel–Crafts Alkylation Reaction
- Dynamic Characteristics and Speed Control Strategy of Cellulose Hydrolysis Reactor at High Solids Loading
- Kinetic Study of Light Mercaptans in the Presence of Merox Catalyst and Caustic Soda
- Applications of Feed-Forward Neural Network to Study Irregular-Shape Particle Effects on Hydrodynamics Behavior in a Liquid–Solid Circulating Fluidized Bed Riser
- Experimental Investigation on the Translational and Rotational Motion of Biomass Particle in a Spout-Fluid Bed
- Industrial Methanol from Syngas: Kinetic Study and Process Simulation
- Study of Co-pyrolysis Characteristics of Lignite and Rice Husk in a TGA and a Fixed-Bed Reactor
- Exergy Analysis of Oxidative Steam Reforming of Methanol for Hydrogen Producton: Modeling Study
- Lead (II) Pollution Enhances the Binding of Transgenic Toxin in Brown and Red Soils: Equilibrium and Kinetics
- Influence of a Second Liquid Phase upon Carbon Dioxide Chemical Absorption
- Brackish Water Desalination by Electrodialysis: CaCO3 Scaling Monitoring During Batch Recirculation Operation
- The Effect of TiO2 Contained within a Titanium Silicalite (TS-1) Catalyst and on the Selective Oxidation of Ammonia
- Understanding Pt–Rh Synergy in a Three-Way Catalytic Converter
- Mathematical Modelling of Microwave Pyrolysis
- Photocatalytic Purification of Wastewater Polluted by Odorant Sulfur Compounds Using Titanium Oxide in a Continuous Photoreactor
- Adsorption Kinetics of Oxytetracycline onto Activated Carbon in a Closed-Loop Fixed Bed Reactor
- Catalytic Wet Peroxide Oxidation of Chlorophenol Over a Ce0.86Cu0.14–xO2 Catalyst
- Chemical Reaction Effect upon Gas–Liquid Interfacial Area in a Bubble Column Reactor
- Comparative Studies on Nitrophenol Removal byAdsorption and Simultaneous Adsorption-Biodegradation Processes
- Ultrasound-Assisted Enzymatic Synthesis of Poly-ε-Caprolactone: Kinetic Behavior and ReactorDesign
