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Estimation Of Liquid Side Mass Transfer Coefficient And Liquid Film Thickness In A Bubble Column Using Single Spherical Bubble Model
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Book Synopsis Estimation of Liquid‐side Mass Transfer Coefficient and Liquid Film Thickness in a Bubble Column Using Single Spherical Bubble Model by :
Download or read book Estimation of Liquid‐side Mass Transfer Coefficient and Liquid Film Thickness in a Bubble Column Using Single Spherical Bubble Model written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PRINCIPLES OF MASS TRANSFER AND SEPERATION PROCESSES by : BINAY K. DUTTA
Download or read book PRINCIPLES OF MASS TRANSFER AND SEPERATION PROCESSES written by BINAY K. DUTTA and published by PHI Learning Pvt. Ltd.. This book was released on 2007-01-21 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is targetted to undergraduate students in chemical engineering, chemical technology, and biochemical engineering for courses in mass transfer, separation processes, transport processes, and unit operations. The principles of mass transfer, both diffusional and convective have been comprehensively discussed. The application of these principles to separation processes is explained. The more common separation processes used in the chemical industries are individually described in separate chapters. The book also provides a good understanding of the construction, the operating principles, and the selection criteria of separation equipment. Recent developments in equipment have been included as far as possible. The procedure of equipment design and sizing has been illustrated by simple examples. An overview of different applications and aspects of membrane separation has also been provided. ‘Humidification and water cooling’, necessary in every process indus-try, is also described. Finally, elementary principles of ‘unsteady state diffusion’ and mass transfer accompanied by a chemical reaction are covered. SALIENT FEATURES : • A balanced coverage of theoretical principles and applications. • Important recent developments in mass transfer equipment and practice are included. • A large number of solved problems of varying levels of complexities showing the applications of the theory are included. • Many end-chapter exercises. • Chapter-wise multiple choice questions. • An Instructors manual for the teachers.
Book Synopsis Hydrodynamics and Mass Transfer in Bubble Columns by : Onkar N. Manjrekar
Download or read book Hydrodynamics and Mass Transfer in Bubble Columns written by Onkar N. Manjrekar and published by . This book was released on 2016 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bubble columns and slurry bubble columns are multiphase reactors used for a wide range of applications in the biochemical, chemical, petrochemical, and metallurgical industries. In spite of their widespread usage, the scale-up of bubble columns remains an ongoing challenge. Various scale-up approaches, based on concepts ranging from ideal mixing to complex 3-D multiphase CFD models, have been used for assessing the effect of column size and gas and liquid flow rates on column hydrodynamics and reactor performance. Among these approaches, phenomenological models based on either single-class or multi-class bubbles that were validated on cold flow systems have been successful in predicting the residence time distributions of gas and liquid in pilot-scale bubble columns (Chen et al., 2004) (Gupta, 2002). However, such models are not entirely predictive, since they are validated using columns having the same size as hot operating units. To provide better predictive capability, we need prior knowledge of local hold-up, transport coefficients, and bubble dynamics. This dissertation provides an improved understanding of the key design parameters (gas hold-up, volumetric mass transfer coefficients, gas-liquid interfacial area, and their spatial distribution) for predictive scale-up of bubble columns. In this work, a 4-point optical probe is used to estimate local gas hold-up and bubble dynamics (specific interfacial area, frequency, bubble velocity, and bubble chord-lengths) and their radial profiles in a cold-flow slurry bubble column and a bubble column photo-bioreactor. Along with local bubble dynamics, the effect of superficial gas velocity on volumetric mass transport coefficients in several sizes of bubble columns, with and without internals, and in slurry bubble columns and photo-bioreactors are studied. Key findings: In the bubbly flow regime, bubble dynamics in photo-bioreactors with suspended algae were dominated by the physicochemical properties of the liquid, as distinguished from the churn-turbulent flow regime in the slurry bubble columns, where bubble dynamics were mainly affected by turbulent intensities. In the bubbly-flow regime, volumetric mass transfer coefficients increased with an increase in superficial gas velocity. However, in the churn-turbulent flow regime, they approached a constant value with an increase in the superficial gas velocity. A new methodology was proposed to identify the flow regime from optical probe signals based on the support vector machine algorithm, which can uniquely classify flow regimes for various systems on a single flow regime map. A new model for the liquid phase mixing, that with a proper choice of the mass transfer coefficients enables a good match of the predicted and measured tracer response is described. This model provides a better prediction of volumetric mass transfer coefficients than the currently used well mixed model for the liquid phase (CSTR). The dissertation improves the fundamental understanding of the connection between bubble dynamics and mass transfer. Using the 4-point optical probe as a tool, it demonstrates a connection between bubble dynamics and volumetric mass transfer coefficients. Present work addresses the need of industries to have a method that can be used as an online process control tool to identify flow regime, this method has been tested at cold flow conditions and needs to be implemented at hot flow conditions. The parameters (radial distributions of gas hold-up, bubble velocities, and volumetric mass transfer coefficient) that are evaluated in the present work can be used to validate phenomenological models and CFD results at cold flow conditions, which can later be combined with process chemistry to accomplish scale-up (Chen et al., 2004). The open literature on multiphase reactors is mainly limited to cold flow condition, and techniques such as the optical probe need to be extended to hot flow conditions. The optical probe described here can withstand high temperature and pressure, but for hot flow conditions it requires a better binding agent to hold the probe tips together, one that will not dissolve in industrial solvents.
Book Synopsis Bubble Wake Dynamics in Liquids and Liquid-Solid Suspensions by : Liang-Shih Fan
Download or read book Bubble Wake Dynamics in Liquids and Liquid-Solid Suspensions written by Liang-Shih Fan and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to a fundamental understanding of the fluid dynamic nature of a bubble wake, more specifically the primary wake, in liquids and liquid-solid suspensions, an dto the role it plays in various important flow phenomena of multiphase systems. Examples of these phenomena are liquid/solids mixing, bubble coalescence and disintergration, particle entrainment to the freeboard, and bed contraction.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theoretical Chemical Engineering Abstracts by :
Download or read book Theoretical Chemical Engineering Abstracts written by and published by . This book was released on 1986 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Particles, Bubbles & Drops by : Efstathios Michaelides
Download or read book Particles, Bubbles & Drops written by Efstathios Michaelides and published by World Scientific Publishing Company Incorporated. This book was released on 2006-01-01 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of multiphase flows has grown by leaps and bounds in the last thirty years and is now regarded as a major discipline. Engineering applications, products and processes with particles, bubbles and drops have consistently grown in number and importance. An increasing number of conferences, scientific fora and archived journals are dedicated to the dissemination of information on flow, heat and mass transfer of fluids with particles, bubbles and drops. Numerical computations and "thought experiments" have supplemented most physical experiments and a great deal of the product design and testing processes. The literature on computational fluid dynamics with particles, bubbles and drops has grown at an exponential rate, giving rise to new results, theories and better understanding of the transport processes with particles, bubbles and drops. This book captures and summarizes all these advances in a unified, succinct and pedagogical way. Contents: Fundamental Equations and Characteristics of Particles, Bubbles and Drops; Low Reynolds Number Flows; High Reynolds Number Flows; Non-Spherical Particles, Bubbles and Drops; Effects of Rotation, Shear and Boundaries; Effects of Turbulence; Electro-Kinetic, Thermo-Kinetic and Porosity Effects; Effects of Higher Concentration and Collisions; Molecular and Statistical Modeling; Numerical Methods-CFD. Key Features Summarizes the recent important results in the theory of transport processes of fluids with particles, bubbles and drops Presents the results in a unified and succinct way Contains more than 600 references where an interested reader may find details of the results Makes connections from all theories and results to physical and engineering applications Readership: Researchers, practicing engineers and physicists that deal with any aspects of Multiphase Flows. It will also be of interest to academics and researchers in the general fields of mechanical and chemical engineering.
Book Synopsis Experimental Determination of the Liquid Phase Mass Transfer Coefficient During Levitation of a Single Bubble in a Liquid Layer by : F. N. Tage-Zade
Download or read book Experimental Determination of the Liquid Phase Mass Transfer Coefficient During Levitation of a Single Bubble in a Liquid Layer written by F. N. Tage-Zade and published by . This book was released on 1971 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bubbles, Drops, and Particles by : R. Clift
Download or read book Bubbles, Drops, and Particles written by R. Clift and published by Courier Corporation. This book was released on 2013-04-22 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a unified treatment and critical review of the literature related to the fluid dynamics, heat transfer, and mass transfer of single bubbles, drops, and particles. 1978 edition.
Book Synopsis Mass Transfer in a Rising Bubble by : George Baxter Humphreys
Download or read book Mass Transfer in a Rising Bubble written by George Baxter Humphreys and published by . This book was released on 1953 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Liquid-film Mass Transfer Coefficients for Countercurrently Operated Random Packed Absorption Columns by : Hayley E. Hoffpauir
Download or read book Estimation of Liquid-film Mass Transfer Coefficients for Countercurrently Operated Random Packed Absorption Columns written by Hayley E. Hoffpauir and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental and Computational Study of Hydrodynamics and Mass Transfer in Gas-liquid Bubble Columns by : Houman Shirzadi
Download or read book An Experimental and Computational Study of Hydrodynamics and Mass Transfer in Gas-liquid Bubble Columns written by Houman Shirzadi and published by . This book was released on 2012 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Measurement of Bubble Diameter Distributions and Liquid Side Mass Transfer Coefficients in a Gas-Liquid Agitated Vessel Using a Real-Time, High Speed Image Processing System by : Mitsuo Kamiwano
Download or read book The Measurement of Bubble Diameter Distributions and Liquid Side Mass Transfer Coefficients in a Gas-Liquid Agitated Vessel Using a Real-Time, High Speed Image Processing System written by Mitsuo Kamiwano and published by . This book was released on 1998 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Approaches for Theoretical Estimation of Mass Transfer Parameters in Both Gas-Liquid and Slurry Bubble Columns by : Stoyan Nedeltchev
Download or read book New Approaches for Theoretical Estimation of Mass Transfer Parameters in Both Gas-Liquid and Slurry Bubble Columns written by Stoyan Nedeltchev and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Flow Patterns and Dissolution Kinetics in Bubble Columns by :
Download or read book A Study of Flow Patterns and Dissolution Kinetics in Bubble Columns written by and published by . This book was released on 1997 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research objectives were to: study liquid and gas phase flow patterns in a bubble column reactor by comparing observations made with reported observations and hydrodynamic models; study mixing of two miscible liquid solutions with and without solid suspension in a bubble column reactor; study the kinetics of dissolution of a reactive solid phase suspended in the liquid phase in a bubble column reactor; and calculate mass transfer coefficients and apparent reaction rate from suitable mathematical models. Observations and conclusions are summarized in a series of viewgraphs.
Book Synopsis Direct and Large-Eddy Simulation IV by : Bernard Geurts
Download or read book Direct and Large-Eddy Simulation IV written by Bernard Geurts and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 2001 DLES4 workshop. It describes and discusses state-of-the-art modeling and simulation approaches for complex flows. Fundamental turbulence and modeling issues but also elements from modern numerical analysis are at the heart of this field of interest.
Book Synopsis Chapter New Approaches for Theoretical Estimation of Mass Transfer Parameters in Both Gas-Liquid and Slurry Bubble Columns by : Stoyan Nedeltchev
Download or read book Chapter New Approaches for Theoretical Estimation of Mass Transfer Parameters in Both Gas-Liquid and Slurry Bubble Columns written by Stoyan Nedeltchev and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: