Computational Study of Impingement Jet Drying of Seeds Using Superheated Steam Based on Kinetic Theory of Granular Flow

A Eulerian model including the kinetic theory of granular flow (KTGF) and mass transfer in the period of saturated wet surface has been developed to simulate continuous drying of particulate solids using superheated steam in a radial impingement jet system. When applying this type of drying processes, the preliminary results obtained show good predictive ability of the Eulerian modeling based on KTGF. It is concluded that the present study and other works of modeling can be used to study the dynamics and control of this drying process and thus would facilitate the equipment design and scaling.

[1]  Xiangping Zhang,et al.  Numerical simulation of the bubbling fluidized bed coal gasification by the kinetic theory of granular flow (KTGF) , 2007 .

[2]  A. S. Mujumdar,et al.  Simulation of a Spray Dryer Fitted with a Rotary Disk Atomizer Using a Three-Dimensional Computional Fluid Dynamic Model , 2004 .

[3]  Rosana G. Moreira,et al.  Impingement drying of foods using hot air and superheated steam , 2001 .

[4]  Li Xin Huang,et al.  A Three-Dimensional Simulation of a Spray Dryer Fitted with a Rotary Atomizer , 2005 .

[5]  Arun S. Mujumdar,et al.  Research and Development in Drying: Recent Trends and Future Prospects , 2004 .

[6]  R. Blasco,et al.  PNEUMATIC DRYING WITH SUPERHEATED STEAM: BI-DIMENSIONAL MODEL FOR HIGH SOLID CONCENTRATION , 2001 .

[7]  J. Jenkins,et al.  A theory for the rapid flow of identical, smooth, nearly elastic, spherical particles , 1983, Journal of Fluid Mechanics.

[8]  A Model for the Relative Velocity of a Particle in an Impingement Dryer: Application to Heat Transfer , 2004 .

[9]  Arun S. Mujumdar,et al.  Spray Dryers: Modeling and Simulation , 2006 .

[10]  V. S. Vaidhyanathan,et al.  Transport phenomena , 2005, Experientia.

[11]  E. Canales,et al.  Drying of Fish Press-Cake with Superheated Steam in a Pilot Plant Impingement System , 2008 .

[12]  D. Jeffrey,et al.  Kinetic theories for granular flow: inelastic particles in Couette flow and slightly inelastic particles in a general flowfield , 1984, Journal of Fluid Mechanics.

[13]  R. Bórquez,et al.  Simulation of Superheated Steam Turbulent Flows and Heat Transfer in an Impingement Dryer , 2003 .

[14]  Wojciech Ludwig,et al.  CFD Modeling of a Spouted-Bed Dryer Hydrodynamics , 2005 .

[15]  A. S. Mujumdar,et al.  Numerical Study of Two-Stage Horizontal Spray Dryers Using Computational Fluid Dynamics , 2006 .

[16]  A. S. Mujumdar,et al.  Use of Computational Fluid Dynamics to Evaluate Alternative Spray Dryer Chamber Configurations , 2003 .

[17]  Baosheng Jin,et al.  Flow behaviors of a large spout-fluid bed at high pressure and temperature by 3D simulation with kinetic theory of granular flow , 2007 .

[18]  J. Chu,et al.  Evaporation of Liquids into Their Superheated Vapors , 1953 .

[19]  Juma Yousuf Alaydi,et al.  Heat Transfer , 2018, A Concise Manual of Engineering Thermodynamics.

[20]  Madhava Syamlal,et al.  Extension of Hill–Koch–Ladd drag correlation over all ranges of Reynolds number and solids volume fraction , 2006 .

[21]  Arun S. Mujumdar,et al.  Development of a New Innovative Conceptual Design for Horizontal Spray Dryer via Mathematical Modeling , 2005 .

[22]  Arun S. Mujumdar,et al.  Simulation of the Hydrodynamics and Drying in a Spouted Bed Dryer , 2007 .

[23]  J. R. Quispe,et al.  Simulation of turbulent flows in an impingement dryer by an extended κ–ε model , 2000 .

[24]  Jintang Li,et al.  APPLICATION OF THE DISCRETE ELEMENT MODELLING IN AIR DRYING OF PARTICULATE SOLIDS , 2002 .

[25]  Berend van Wachem,et al.  Numerical simulation and validation of dilute turbulent gas–particle flow with inelastic collisions and turbulence modulation , 2008 .

[26]  W. E. Muir,et al.  Drying Foodstuffs with Superheated Steam , 2004 .

[27]  M. Syamlal,et al.  MFIX documentation theory guide , 1993 .

[28]  A. S. Mujumdar,et al.  A Parametric Study of the Gas Flow Patterns and Drying Performance of Co-current Spray Dryer: Results of a Computational Fluid Dynamics Study , 2003 .

[29]  Arun S. Mujumdar,et al.  Global R&D Needs in Drying , 2007 .

[30]  Arun S. Mujumdar,et al.  Simulation of an Industrial Spray Dryer and Prediction of Off-Design Performance , 2007 .

[31]  C. Lun.  Kinetic theory for granular flow of dense, slightly inelastic, slightly rough spheres , 1991, Journal of Fluid Mechanics.

[32]  André Lemaitre,et al.  Superheated steam drying technology , 2004 .

[33]  Arun S. Mujumdar,et al.  A Numerical Study of Heat Transfer Mechanisms in Gas–Solids Flows Through Pipes Using a Coupled CFD and DEM Model , 2003 .

[34]  Madhava Syamlal,et al.  Evaluation of boundary conditions used to model dilute, turbulent gas/solids flows in a pipe , 2005 .

[35]  Madhava Syamlal,et al.  MFIX documentation numerical technique , 1998 .

[36]  Robert R. White,et al.  ENGINEERING AND PROCESS DEVELOPMENT Drying Granular Solids in Superheated Steam , 1951 .

[37]  Jam Hans Kuipers,et al.  Hydrodynamic modelling of dense gas-fluidised beds: Comparison of the kinetic theory of granular flow with 3D hard-sphere discrete particle simulations , 2002 .

[38]  K. E. Starling,et al.  Equation of State for Nonattracting Rigid Spheres , 1969 .

[39]  David F. Fletcher,et al.  Validation of the Lagrangian Approach for Predicting Turbulent Dispersion and Evaporation of Droplets within a Spray , 2006 .

[40]  Grant M. Campbell,et al.  Discrete Modeling and Suggested Measurement of Heat Transfer in Gas–Solids Flows , 2003 .