Fluid-particle Interactions in a Centrifugal Fluidized Bed
Author: Prashant Haldipur
Publisher:
Published: 2003
Total Pages: 542
ISBN-13:
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Author: Prashant Haldipur
Publisher:
Published: 2003
Total Pages: 542
ISBN-13:
DOWNLOAD EBOOKAuthor: Wen-Ching Yang
Publisher: CRC Press
Published: 2003-03-19
Total Pages: 873
ISBN-13: 0824748360
DOWNLOAD EBOOKThis reference details particle characterization, dynamics, manufacturing, handling, and processing for the employment of multiphase reactors, as well as procedures in reactor scale-up and design for applications in the chemical, mineral, petroleum, power, cement and pharmaceuticals industries. The authors discuss flow through fixed beds, elutriation and entrainment, gas distributor and plenum design in fluidized beds, effect of internal tubes and baffles, general approaches to reactor design, applications for gasifiers and combustors, dilute phase pneumatic conveying, and applications for chemical production and processing. This is a valuable guide for chemists and engineers to use in their day-to-day work.
Author: Frederick A. Zenz
Publisher:
Published: 1960
Total Pages: 540
ISBN-13:
DOWNLOAD EBOOKAuthor: Tom Wytrwat
Publisher: Cuvillier Verlag
Published: 2022-02-15
Total Pages: 200
ISBN-13: 3736965710
DOWNLOAD EBOOKAn in-depth experimental study of the fluid dynamics of turbulent fluidized beds with particles of Geldart’s Group B was carried out. For this purpose, fluidization behavior was investigated in different fluidized bed plants having diameters in the range of 0.05 m to 1 m. Pressure fluctuation analysis has been used as an identification tool for the turbulent fluidized bed regime. Different fluidization conditions have been investigated by variation of the fluidized bed properties, the bed material properties, and the gas properties. Based on the measured data, a correlation predicting the transition velocity from bubbling to turbulent fluidization is introduced. To investigate the local flow structure, capacitance probe measurements have been carried out. Using this measurement technique, local solids concentrations and properties of rising bubbles have been determined and analyzed. Finally, an empiric fluid dynamic model was developed using the local measurement data. It is mainly based on capacitance probe measurements and shows high accuracy in comparison to pressure data.
Author: John Frank Davidson
Publisher:
Published: 1971
Total Pages: 872
ISBN-13:
DOWNLOAD EBOOKAuthor: Ted M. Knowlton
Publisher:
Published: 1984
Total Pages: 144
ISBN-13:
DOWNLOAD EBOOKAuthor: Brian Patrick Reed
Publisher:
Published: 2006
Total Pages: 626
ISBN-13:
DOWNLOAD EBOOKTraditional modeling of fluidized bed operations has focused on the development of models and correlations for specific systems or narrow areas of application. With recent advances in computing power, new methods of modeling fluidization are possible. One such approach is the Computational Fluid Dynamic Discrete Particle Method (CFD-DPM), which treats the fluid as a continuum and the particles as discrete Newtonian entities. The promise of the CFD-DPM approach lies in its ability to incorporate particle interactions in a way that previous models could not. One area of fluidization that has not been actively modeled is the inclusion of non-traditional forces in the fluidization operation. As an example, the use of external magnetic fields in fluidization has provided some interesting applications including; fluidized beds capable of operation in micro-gravity, manipulation of bed structure, and stabilizing bubbling fluidized beds. The ability to model external forces and particle interactions would increase our understanding of these phenomena and potentially lead to new applications for fluidization. A Computational Fluid Dynamic Discrete Particle Method code, named Particle-X, is developed from first principles. The development includes the consideration of external fields and forces, as well as inter-particle forces. The code is validated against experimental data collected from a variety of fluidized bed operations. Particle-X can be used as a tool for the scientific investigation of fluidization under conditions that cannot be accurately reproduced in a laboratory environment; specifically the development of various fluidization operations for use in micro-gravity is considered.
Author: J H Harker
Publisher: Elsevier
Published: 2013-10-22
Total Pages: 1219
ISBN-13: 0080490646
DOWNLOAD EBOOKChemical Engineering Volume 2 covers the properties of particulate systems, including the character of individual particles and their behaviour in fluids. Sedimentation of particles, both singly and at high concentrations, flow in packed and fluidised beads and filtration are then examined. The latter part of the book deals with separation processes, such as distillation and gas absorption, which illustrate applications of the fundamental principles of mass transfer introduced in Chemical Engineering Volume 1. In conclusion, several techniques of growing importance - adsorption, ion exchange, chromatographic and membrane separations, and process intensification - are described. - A logical progression of chemical engineering concepts, volume 2 builds on fundamental principles contained in Chemical Engineering volume 1 and these volumes are fully cross-referenced - Reflects the growth in complexity and stature of chemical engineering over the last few years - Supported with further reading at the end of each chapter and graded problems at the end of the book
Author:
Publisher:
Published: 2005
Total Pages: 794
ISBN-13:
DOWNLOAD EBOOKAuthor: Tom Wytrwat
Publisher: SPE-Schriftenreihe 20
Published: 2022-02-15
Total Pages: 200
ISBN-13: 9783736975712
DOWNLOAD EBOOKAn in-depth experimental study of the fluid dynamics of turbulent fluidized beds with particles of Geldart's Group B was carried out. For this purpose, fluidization behavior was investigated in different fluidized bed plants having diameters in the range of 0.05 m to 1 m. Pressure fluctuation analysis has been used as an identification tool for the turbulent fluidized bed regime. Different fluidization conditions have been investigated by variation of the fluidized bed properties, the bed material properties, and the gas properties. Based on the measured data, a correlation predicting the transition velocity from bubbling to turbulent fluidization is introduced. To investigate the local flow structure, capacitance probe measurements have been carried out. Using this measurement technique, local solids concentrations and properties of rising bubbles have been determined and analyzed. Finally, an empiric fluid dynamic model was developed using the local measurement data. It is mainly based on capacitance probe measurements and shows high accuracy in comparison to pressure data.