Empty Spray Sections of Vacuum Towers: Heat and Mass Transfer with a CFD approach
-
Karolline Ropelato
, Antonio Castro , Milton Mori und Washington Geraldelli
Distillation columns are the core of a refining process. An understanding of their heat and mass transfer is essential to propose modifications of the equipment. A multiphase model is applied to the vacuum tower with the vapor-liquid flow being modeled with an Eulerian-Lagrangian approach. An ideal multicomponent equilibrium model is adopted to represent the thermodynamics in the heat and mass transfer processes. The characteristic time scales are used in the classification and the understanding of the dominant mechanisms in gas-liquid suspensions. This methodology is general, and therefore can be applied to any turbulent gas-liquid flow. The present work applies a simplified multicomponent Fick's law and gamma-phi approach to liquid-vapor equilibrium in an Eulerian-Lagrangian multiphase flow model in order to get multicomponent heat and mass transfer. The simplification proposed here is that the diffusive flux is independent of the other fluxes. This implies that each flux can be calculated without information on the other fluxes. On the other hand, thermodynamic equilibrium takes all components into account. Thus, it is rigorously calculated. The main target of this work is to gather information on vacuum tower fluid dynamics using an Eulerian-Lagrangian model with computational fluid dynamics (CFD) techniques, which is a powerful tool for better understanding the physical phenomena involved in vacuum towers.
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
Artikel in diesem Heft
- Article
- Influence of Temperature and Pressure on the Non-Catalytic Partial Oxidation of Natural Gas
- CFD Simulation of Hydraulics of Sieve Trays with Gas Mal-Distribution
- Experimental Measurement and Modeling of Diffusion Anomalies in a CMS Membrane
- Moisture Diffusivity and Energy Consumption during Microwave Drying of Plaster of Paris
- Optimization studies on Biosorption of Copper (II) by Crab Shell Using Response Surface Methodology(RSM)
- Simulation and Control of a Commercial Double Effect Evaporator: Tomato Juice
- Novel PCA-Based Technique for Identification of Dominant Variables for Partial Control
- Search for Optimal Design of Multiproduct Batch Plants under Uncertain Demand using Gaussian Process Modeling Solved by Heuristics Methods
- Adsorption of Crude Oil Using Meshed Groundnut Husk
- Revisiting Reaction-Diffusion Process in a Porous Catalyst: Improving the Adomian Solution
- Combining Design of Experiments Techniques, Connectionist Models, and Optimization for the Efficient Design of New Product Formulations
- Simulation and Analysis of Multi-scale Transport Phenomena and Catalytic Reactions in SOFC Anodes
- Utilization of MATLAB to Simulate Kinetics of Transesterification of Palm Oil-Based Methyl Esters with Trimethylolpropane for Biodegradable Synthetic Lubricant Synthesis
- A Fault Detection and Diagnosis Strategy for Batch/Semi-Batch Processes
- Kinetic Study and Modeling of Aerobic Biological Oxidation of Organic Wastewater
- Conceptual Screening of Reactive Extraction Processing Options
- Production of p-Anisic Acid by Modified Williamson Etherification Reaction Using Design of Experiments
- Empty Spray Sections of Vacuum Towers: Heat and Mass Transfer with a CFD approach
- Influence of Phase Compositions, pH and Temperature on Bovine Serum Albumin Partitioning in Aqueous Biphasic System
- Separation of Organic Chlorine Compounds through Batch Distillation Process
- Modeling of Infrared Drying of Polymer Solutions
- An Object-Oriented Graphics Interface Simulator for Analysis of Fischer-Tropsch Synthesis
- CFD Simulation of Wall Effects in Flow Past a Square Cylinder in a Stationary and Moving Plane Channel
- Axial Variation of Mass Transfer Volumetric Coefficients in Bubble Column Bioreactors
- Thermodynamics of Supercritical Fluid Extraction of Some Dyes and Pharmaceutical Compounds Using the Weighting Matrix Approach
- Study of Numerous Injections into Horizontal Flow Stream at Low Temperature
- Bayesian Network Method for Fault Diagnosis in a Continuous Tubular Reactor
- Isotherm and Kinetics Modeling of Fluoride Removal from Industrial Effluent by Alumina
- Effect of Temperature and Catalyst Concentrations on the Thermal Properties of Polyamide Adhesives at Low Operating Pressure
- Microfluidics of Nanodrug Delivery at Different Angles of Drug Injection
- Optimization of Process Variables for Amylase Production Using Agro Residual Wastes by Taguchi Methodology
- Sorption of Acid Blue 9 on to Wheat Bran: Optimization, Equilibrium and Kinetic Studies
- Review
- Safety Improvement and Operational Enhancement via Dynamic Process Simulator: A Review
- Review of Life Cycle Assessment in Agro-Chemical Processes
Artikel in diesem Heft
- Article
- Influence of Temperature and Pressure on the Non-Catalytic Partial Oxidation of Natural Gas
- CFD Simulation of Hydraulics of Sieve Trays with Gas Mal-Distribution
- Experimental Measurement and Modeling of Diffusion Anomalies in a CMS Membrane
- Moisture Diffusivity and Energy Consumption during Microwave Drying of Plaster of Paris
- Optimization studies on Biosorption of Copper (II) by Crab Shell Using Response Surface Methodology(RSM)
- Simulation and Control of a Commercial Double Effect Evaporator: Tomato Juice
- Novel PCA-Based Technique for Identification of Dominant Variables for Partial Control
- Search for Optimal Design of Multiproduct Batch Plants under Uncertain Demand using Gaussian Process Modeling Solved by Heuristics Methods
- Adsorption of Crude Oil Using Meshed Groundnut Husk
- Revisiting Reaction-Diffusion Process in a Porous Catalyst: Improving the Adomian Solution
- Combining Design of Experiments Techniques, Connectionist Models, and Optimization for the Efficient Design of New Product Formulations
- Simulation and Analysis of Multi-scale Transport Phenomena and Catalytic Reactions in SOFC Anodes
- Utilization of MATLAB to Simulate Kinetics of Transesterification of Palm Oil-Based Methyl Esters with Trimethylolpropane for Biodegradable Synthetic Lubricant Synthesis
- A Fault Detection and Diagnosis Strategy for Batch/Semi-Batch Processes
- Kinetic Study and Modeling of Aerobic Biological Oxidation of Organic Wastewater
- Conceptual Screening of Reactive Extraction Processing Options
- Production of p-Anisic Acid by Modified Williamson Etherification Reaction Using Design of Experiments
- Empty Spray Sections of Vacuum Towers: Heat and Mass Transfer with a CFD approach
- Influence of Phase Compositions, pH and Temperature on Bovine Serum Albumin Partitioning in Aqueous Biphasic System
- Separation of Organic Chlorine Compounds through Batch Distillation Process
- Modeling of Infrared Drying of Polymer Solutions
- An Object-Oriented Graphics Interface Simulator for Analysis of Fischer-Tropsch Synthesis
- CFD Simulation of Wall Effects in Flow Past a Square Cylinder in a Stationary and Moving Plane Channel
- Axial Variation of Mass Transfer Volumetric Coefficients in Bubble Column Bioreactors
- Thermodynamics of Supercritical Fluid Extraction of Some Dyes and Pharmaceutical Compounds Using the Weighting Matrix Approach
- Study of Numerous Injections into Horizontal Flow Stream at Low Temperature
- Bayesian Network Method for Fault Diagnosis in a Continuous Tubular Reactor
- Isotherm and Kinetics Modeling of Fluoride Removal from Industrial Effluent by Alumina
- Effect of Temperature and Catalyst Concentrations on the Thermal Properties of Polyamide Adhesives at Low Operating Pressure
- Microfluidics of Nanodrug Delivery at Different Angles of Drug Injection
- Optimization of Process Variables for Amylase Production Using Agro Residual Wastes by Taguchi Methodology
- Sorption of Acid Blue 9 on to Wheat Bran: Optimization, Equilibrium and Kinetic Studies
- Review
- Safety Improvement and Operational Enhancement via Dynamic Process Simulator: A Review
- Review of Life Cycle Assessment in Agro-Chemical Processes