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Author : Song-Hsing Chern
Publisher :
ISBN 13 :
Total Pages : 279 pages
Book Rating : 4.:/5 (379 download)
Download or read book Hydrodynamic Characteristics of Liquid-solid and Gas-liquid-solid Fluidized Beds written by Song-Hsing Chern and published by . This book was released on 1982 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Song-Hsing Chern
Publisher :
ISBN 13 :
Total Pages : 558 pages
Book Rating : 4.:/5 (951 download)
Download or read book Hydrodynamic Characteristic of Liquid-solid and Gas-liquid-solid Fluidized Beds written by Song-Hsing Chern and published by . This book was released on 1982 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modelling the Hydrodynamic Characteristics of Gas-Liquid-Solid Fluidized Bed Using Artificial Neural Networks written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas- iquid- olid fluidized beds are used extensively in the refining, petrochemical, pharmaceutical, biotechnology, food and environmental industries. The fundamental characteristics of a three-phase fluidized bed have been recently studied extensively. The reviews indicate the importance of the information of phase holdup and bed voidage characteristics, in the optimal design of a three-phase fluidized bed reactor. The various hydrodynamic parameters of three phase fluidized bed have been modeled using Artificial Neural Networks (ANNs). ANNs are good at modeling of non linear parameters, with the ability to generalize the relationships among the data. The data for developing the models has been generated using various correlations available from literature. These correlations are valid for different ranges of the variables. So, artificial neural networks are trained using this vast data range and a generalized model for the hydrodynamic parameters is developed. This project report can be divided mainly into three parts. The first part discusses about importance of gas-liquid-solid fluidized bed, their modes of operation, important hydrodynamic properties those have been studied either related to modeling and applications of gas-liquid-solid fluidized bed. The second part gives an overview of the basics of Artificial Neural Networks (ANNs) and the various architectures of neural networks that are commonly used for modeling. The third part consists of the details of the problem description and the approach used by ANN to model the hydrodynamic characteristics. The results show that the model has been effective in generalizing the relationship of various hydrodynamic characteristics with their respective independent variables.
Download or read book Hydrodynamic Characteristics of Three-phase Fluidized Beds written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The hydrodynamics of three-phase (gas-liquid-solid) fluidized beds has been studied in two columns of 7.62 and 15.2 cm in dia. The minimum gas and liquid velocities necessary to fluidize a bed were determined as a function of the particle size and density and the liquid viscosity; no effect of the initial bed height or column diameter was found. An electroconductivity technique was used to measure local concentrations of solid, liquid, and gas in the fluidized bed; these profiles were fitted using the error function. Overall solid holdup data were combined with over 1350 points from the literature to yield a dimensional correlation involving the physical parameters of the systems studied.
Author : Nicholas P. Cheremisinoff
Publisher : Butterworth-Heinemann
ISBN 13 :
Total Pages : 888 pages
Book Rating : 4.3/5 (91 download)
Download or read book Hydrodynamics of Gas-solids Fluidization written by Nicholas P. Cheremisinoff and published by Butterworth-Heinemann. This book was released on 1984 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrodynamic Study of Three Phase Semi Fluidized Bed with Irregular and Homogeneous Binary Mixtures written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluidization refers to a process by which a fluid like state is imparted to granular solid particles by the passing of a fluid upwards through the bed of particles. A semi fluidized bed is characterized by a fluidized bed and a packed bed in a series within a single contacting vessel. Gas-liquid-solid semi fluidization is defined as an operation in which a bed of solid particles is suspended in gas and/or liquid upward flowing media due to the net gravitational force on the particles and the motion of the particles is restricted by a top restraint. Such an operation generates intimate contact between the gas, liquid and solid particles in these systems and provides substantial advantages for applications in physical, Chemical and biochemical processing involving gas, liquid and solid phases. The experiments were conducted using liquid as the continuous phase and gas as the discontinuous phase. In this work air, water and dolomite (2.31mm, and 1.7mm) are used as the gas, liquid and solid phases respectively. The experiments were carried out in a 100 mm ID of 2m height vertical Plexiglas column. Knowledge of minimum liquid semi fluidization velocity is essential for the successful operation of gas-liquid-solid semi fluidized beds. Bed pressure measurements have been made to predict the values of the minimum liquid semi fluidization velocity. In the present work, hydrodynamic characteristics viz., the pressure drop, bed expansion of a co-current gas-liquid-solid semi fluidized bed has been studied. These have done in order to develop a good understanding of each of the flow regime in gas-liquid and liquid-solid semi fluidization. The effect of static bed height, particle size, liquid velocity and gas velocity on hydrodynamics parameters like minimum semi fluidization velocity, pressure drop, expansion ratio have been investigated. Experimental study based on statistical design has been made to investigate the expansion ratio of semi fluidized bed. The experimental val.
Author : Rong-Her Jean
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (135 download)
Download or read book Hydrodynamics and Solids Mixing in Liquid-solid and Gas-liquid-solid Fluidized Beds written by Rong-Her Jean and published by . This book was released on 1985 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Diana T. Matonis
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (466 download)
Download or read book Hydrodynamic Simulation of a Gas-liquid-solid Fluidized Bed written by Diana T. Matonis and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Amin Jaberi
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.:/5 (17 download)
Download or read book The Hydrodynamic Behavior of an Inverse Liquid-solid Circulating Fluidized Bed written by Amin Jaberi and published by . This book was released on 2014 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work the hydrodynamic behavior of an inverse liquid-solid circulating fluidized bed (ILSCFB) system was studied. In addition, the hydrodynamic characteristic of the inverse liquid-solid fluidization under the conventional fluidization regime was also studied. The system consists of a downer with an inner column diameter of 7.6 cm and a height of 5.4 meters, an upcomer (riser) with an inner column diameter of 20 cm, a separator, and feeding and returning pipes which connect the downer and the upcomer. Based on the axial hydrodynamic behavior of the ILSCFB, it was found that the axial solids holdup in the downer is uniform. Similar to the heavy-particle LSCFB, the circulating fluidization regime in the downer was separated into the two zones including the initial circulating fluidization zone and the fully developed circulating fluidized zone as a function of the total liquid velocity in the downer. The effects of the solids inventory and the counter current flow in the upcomer on the hydrodynamics of the downer were also studied. Afterwards, the radial distribution of particles was studied in the downer of the ILSCFB. Interestingly, the radial structure of the two-phase flow was completely different from the case of the heavy-particle LSCFB. It was found that the solids holdup was greater in the center than near the wall of the downer. Finally, the conventional (non-circulating) inverse liquid-solid fluidization was studied in a column with a large diameter for the first time. The minimum fluidization velocity was obtained experimentally and compared with the Richardson and Zaki model. It was concluded that the Richardson and Zaki model can predict the bed expansion in the case of the inverse liquid-solid fluidization when the terminal velocity was calculated by the model of free rising light particles.
Author : Hara Mohan Jena
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (834 download)
Download or read book Hydrodynamics of Gas-liquid-solid Fluidized and Semi-fluidized Beds written by Hara Mohan Jena and published by . This book was released on 2009 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ravindra Gaikwad
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659511486
Total Pages : 76 pages
Book Rating : 4.5/5 (114 download)
Download or read book Hydrodynamic Study of Three Phase Fluidized Beds written by Ravindra Gaikwad and published by LAP Lambert Academic Publishing. This book was released on 2014-01-01 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general purpose of the experimental investigations described here has to study the hydrodynamic properties of gas-liquid fluidized beds. Gas -liquid fluidization of or three-phase fluidization is a chemical engineering operation where all the three phases are brought into contact with each other. This contact is brought about by passing the gas and liquid trough the bed of solids. The solids are said to be in a fluidized state when they are suspended in the continuous phase.Hydrodynamic properties such as gas hold-up, liquid hold-up and bed porosity have been studied. These properties depend upon certain independent variables such as gas flow rates, liquid flow rate, particle size, static bed heights, gas density, liquid density, solid density, liquid surface tension, liquid viscosity, gas viscosity and particle shape. During the course of this experimental investigation only four of these parameters have been varied, viz, gas flow rates, liquid flow rates, static bed height and particle size.The result of these experimental investigations is discussed and correlations have also been developed for the hydrodynamics properties studied.
Author : Liang-Shih Fan
Publisher : Butterworth-Heinemann
ISBN 13 : 1483289516
Total Pages : 784 pages
Book Rating : 4.4/5 (832 download)
Download or read book Gas-Liquid-Solid Fluidization Engineering written by Liang-Shih Fan and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive mechanistic interpretation of the transport phenomena involved in various basic modes of gas-liquid-solid fluidization. These modes include, for example, those for three-phase fluidized beds, slurry columns, turbulent contact absorbers, and three-phase fluidized beds, slurry columns, turbulent contact absorbers, and three-phase transport. It summarizes the empirical correlations useful for predicting transport properties for each mode of of operation.Gas-Liquid-Solid Fluidization Engineering provides a comprehensive account of the state-of-the-art applications of the three-phase fluidization systems that are important in both small-and large-scale operations. These applications include fermentation,biological wastewater treatment, flue gas desulfurization and particulates removal, and resid hydrotreating. This book highlights the industrial implications of these applications. In addition, it discusses information gaps and future directions forresearch in this field.
Author : Shaikh Abdur Razzak
Publisher :
ISBN 13 :
Total Pages : 672 pages
Book Rating : 4.:/5 (16 download)
Download or read book Hydrodynamic Studies in Liquid-solid and Gas-liquid-solid Circulating Fluidized Beds written by Shaikh Abdur Razzak and published by . This book was released on 2009 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John R. Grace
Publisher : John Wiley & Sons
ISBN 13 : 3527340645
Total Pages : 626 pages
Book Rating : 4.5/5 (273 download)
Download or read book Essentials of Fluidization Technology written by John R. Grace and published by John Wiley & Sons. This book was released on 2020-06-15 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise and clear treatment of the fundamentals of fluidization, with a view to its applications in the process and energy industries.
Author : Wen-Ching Yang
Publisher : CRC Press
ISBN 13 : 0203912748
Total Pages : 876 pages
Book Rating : 4.2/5 (39 download)
Download or read book Handbook of Fluidization and Fluid-Particle Systems written by Wen-Ching Yang and published by CRC Press. This book was released on 2003-03-19 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 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 : Musun Guo
Publisher : Ellis Horwood
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fluidization written by Musun Guo and published by Ellis Horwood. This book was released on 1992 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outlining the basic concepts used in the analysis of fluidization problems, this text covers the development of various processes, equipment, and devices for fluidized solids. Topics examined include fluidized leaching and washing, and solids mixing and segregation.
Author : Dimitri Gidaspow
Publisher : Elsevier
ISBN 13 : 0080512267
Total Pages : 489 pages
Book Rating : 4.0/5 (85 download)
Download or read book Multiphase Flow and Fluidization written by Dimitri Gidaspow and published by Elsevier. This book was released on 2012-12-02 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Useful as a reference for engineers in industry and as an advanced level text for graduate engineering students, Multiphase Flow and Fluidization takes the reader beyond the theoretical to demonstrate how multiphase flow equations can be used to provide applied, practical, predictive solutions to industrial fluidization problems. Written to help advance progress in the emerging science of multiphase flow, this book begins with the development of the conservation laws and moves on through kinetic theory, clarifying many physical concepts (such as particulate viscosity and solids pressure) and introducing the new dependent variable--the volume fraction of the dispersed phase. Exercises at the end of each chapterare provided for further study and lead into applications not covered in the text itself. Treats fluidization as a branch of transport phenomena Demonstrates how to do transient, multidimensional simulation of multiphase processes The first book to apply kinetic theory to flow of particulates Is the only book to discuss numerical stability of multiphase equations and whether or not such equations are well-posed Explains the origin of bubbles and the concept of critical granular flow Presents clearly written exercises at the end of each chapter to facilitate understanding and further study
