Download or read book Hydrodynamic and Mass Transfer Studies in Packed Beds written by A. Bennett and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrodynamic and Mass Transfer Study of Micro packed Beds in Sigle and Two phase Flow written by Ali Faridkhou and published by . This book was released on 2015 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Micro-packed beds are miniaturized packed beds having the advantages of both microreactors (high surface-to-volume ratios leading to intensified heat and mass transfer rates, increased safety, etc.) and packed beds (effective contact between the phases) that have the potential to be successfully employed for purposes such as catalyst screening and production of hazardous materials. To assess this potential, hydrodynamic characterization of micro-packed beds is necessary as they address the actual flow phenomena and provide suggestions to improve the contacting patterns between phases for enhanced performances. This work starts with a brief review on process intensification via microreactors. Then the importance of micro-packed beds is highlighted while the approaches to build research foundations on micro-packed beds are discussed. Our research begins by studying the flow regimes, transitions in flow regime and hydrodynamic multiplicity in micro-packed beds mostly by means of microscopic wall visualization and image processing. Results on pressure drop and liquid holdup have been obtained and discussed in terms of flow regimes and wall-flow image analyses. In addition, residence time distributions of the liquid in micro-packed beds have been obtained according to two techniques, by an impulse tracing method (electrolyte tracer injection) and wall visualization with optical microscopy. The effect of particle size and channel geometry (circular vs. square) has also been investigated in terms of flow regime transitions, transient behavior and hysteresis. Finally, challenges and recommendations thereof to surpass the many difficulties encountered are methodically explained to facilitate future investigations. Experimental determination of liquid-solid mass transfer coefficient (kLS) via a linear polarization method was also carried out in a micro-packed bed filled with layers of non-spherical graphite particles serving as cathode and anode for the Redox ferri/ferrocyanide electrochemical reaction. Experiments concerned single-phase liquid flow within the diffusion-limited regime. Particle size analysis and image processing were used to evaluate deviations from spherical geometry of the graphite particles to determine liquid-solid mass transfer coefficient. Finally, the correspondence of kLS values with macro-scale packed bed correlations was discussed.
Download or read book Hydrodynamics and Mass Transfer Studies in Three Phase Fluidized Beds written by Vinodkumar R. Dhanuka and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Topics in Mass Transfer written by Mohamed El-Amin and published by BoD – Books on Demand. This book was released on 2011-02-21 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces a number of selected advanced topics in mass transfer phenomenon and covers its theoretical, numerical, modeling and experimental aspects. The 26 chapters of this book are divided into five parts. The first is devoted to the study of some problems of mass transfer in microchannels, turbulence, waves and plasma, while chapters regarding mass transfer with hydro-, magnetohydro- and electro- dynamics are collected in the second part. The third part deals with mass transfer in food, such as rice, cheese, fruits and vegetables, and the fourth focuses on mass transfer in some large-scale applications such as geomorphologic studies. The last part introduces several issues of combined heat and mass transfer phenomena. The book can be considered as a rich reference for researchers and engineers working in the field of mass transfer and its related topics.
Download or read book Packed Bed Columns written by Nikolai Kolev and published by Elsevier. This book was released on 2006-08-08 with total page 709 pages. Available in PDF, EPUB and Kindle. Book excerpt: Packed bed columns are largely employed for absorption, desorption, rectification and direct heat transfer processes in chemical and food industry, environmental protection and also processes in thermal power stations like water purification, flue gas heat utilization and SO2 removal. These Separation processes, are estimated to account for 40%-70% of capital and operating costs in process industry. Packed bed columns are widely employed in this area. Their usage also for direct heat transfer between gas and liquid, enlarge their importance. They are the best apparatuses, from thermodynamical point of view, for mass and heat transfer processes between gas and liquid phase. Their wide spreading is due to low capital investments and operating costs. Since 1995 there has not been published a specialised book in this area, and this is a period of quick development of packed columns. Packed Bed Columns reflects the state of this field including the author's experience on creating and investigating of new packings, column internals and industrial columns. - Considers the theories of mass transfer processes and shows how they help the construction of highly effective packings - Complete information about the performance characteristics of different modern types of highly effective packings - Considers the models for calculation and areas of their application
Download or read book Hydrodynamics and Mass Transfer in Packed Columns and Their Applications for Supercritical Separations written by Geert Feye Woerlee and published by . This book was released on 1997 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Transfer and Absorbers written by Tadeusz Hobler and published by Pergamon. This book was released on 1966 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Micro Process Engineering written by Volker Hessel and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Micro process engineering is approaching both academia and industry. With the provision of micro devices, systems and whole plants by commercial suppliers, one main barrier for using these units has been eliminated. This book focuses on processes and their plants rather than on devices: what is 'before', 'behind' and 'around' micro device fabrication - and gives a comprehensive and detailed overview on the micro-reactor plants and three topic-class applications which are mixing, fuel processing, and catalyst screening. Thus, the book reflects the current level of development from 'micro-reactor design' to 'micro-reactor process design'.
Download or read book Physicochemical Hydrodynamics written by Dudley Brian Spalding and published by . This book was released on 1977 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non Linear Mass Transfer and Hydrodynamic Stability written by C.B. Boyadjiev and published by Elsevier. This book was released on 2000-08-16 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveyed in this book are the kinetics of non-linear mass transfer and its effects on hydrodynamic stability in systems with intensive interphase mass transfer, in electrochemical systems with high current density and in chemically reacting systems. In Part 1 the non-linear mass transfer as a result of an intensive interphase mass transfer in the gas (liquid)-solid surface, gas-liquid and liquid-liquid systems is considered in the duffusion boundary layer approximation as well as in flat channel taking the longitudinal diffusion into account. The influence of the direction of the intensive interphase mass transfer on heat transfer and multi-component mass transfer is illustrated. Part 2 discusses non-linear mass transfer in electrochemical systems with high current density using the examples of the anode dissolving of metals in the electrolyte flow and the electro-separation of metals out of concentrated solutions. The theory of the measured electrochemical treatment of metals and alloys, which is a method of wide practical use, has been elaborated on this basis. In Part 3 the non-linear mass transfer in chemically reacting systems is considered in the cases of: non-linearity of the equations of the chemical reaction's kinetics and intensive interphase mass transfer or thermo-capillary effect due to chemical reactions. On this basis, the mechanisms and the macro-kinetics of the chemical transformations in the gas-liquid systems are discussed. Part 4 is dedicated to the chemical reaction kinetics in stationary two phase systems at an arbitrary contact time between phases. In Part 5 the effects of concentration gradients are considered in the approximations of the linear theory of the hydrodynamic stability of almost parallel flows. In systems with intensive interphase mass transfer, the Marangoni effect could also be observed, beside the effect of non-linear mass transfer. A comparative analysis of both effects is made in this book.
Download or read book Sustainable Agriculture Reviews 38 written by Inamuddin and published by Springer Nature. This book was released on 2020-01-01 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents materials and physical methods for carbon dioxide sequestration. Materials include nanosponges, titanium oxide/zeolite hybrids, classical absorbents, metal oxides, ionic liquids, alkaline soils and metal organic frameworks. Methods include cryogenic capture, adsorption, solvent dissolution and soil sequestration.
Download or read book Hydrodynamic and Mass Transfer Studies in a Novel Bubble regeneration Tower written by J. Lamptey and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrodynamics and Mass Transfer Studies of Turbulent Contact Absorbers written by A. H. Jahanmiri and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HYDRODYNAMICS AND MASS TRANSFER IN PACKED COLUMNS written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Transfer Studies on a Novel Rotating Packed Bed Higee written by Mohammad J. Ansari and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particles Bubbles Drops written by Efstathios Michaelides and published by World Scientific. This book was released on 2006 with total page 425 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.
Download or read book Distillation written by Andrzej Gorak and published by Academic Press. This book was released on 2014-07-16 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distillation: Operation and Applications—winner of the 2015 PROSE Award in Chemistry & Physics from the Association of American Publishers—is a single source of authoritative information on all aspects of the theory and practice of modern distillation, suitable for advanced students and professionals working in a laboratory, industrial plants, or a managerial capacity. It addresses the most important and current research on industrial distillation, including all steps in process design (feasibility study, modeling, and experimental validation), together with operation and control aspects. This volume features an extra focus on distillation applications. - Winner of the 2015 PROSE Award in Chemistry & Physics from the Association of American Publishers - Practical information on the newest development written by recognized experts - Coverage of a huge range of laboratory and industrial distillation approaches - Extensive references for each chapter facilitates further study
