Download or read book Numerical Study on Taylor Flow in Monolithic Reactors written by Ignasi Tauste Campo and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Monolithic reactors are promising catalyst designs to intensify multiphase (gas-liquid-solid) reaction processes and several investigations have validated its potential concerning space-time yield and selectivity, especially if fast reactions are employed which are controlled by mass transfer. Monoliths are single structures composed of a large number of parallel straight flow channels, often in a honeycomb arrangement. The essential advantage of such a structure is an excellent mass transfer between the heterogeneous phases, due to an intense gas-liquid-solid contact and short diffusion distances. In theoretical investigations several models, which are based on correlations to describe mass transfer and reaction kinetics and differ in their complexity, have been developed to predict the reactor performance. However, further research is needed to reduce the discrepancy between the predicted and experimental results by model modifications which are based on physics. In this work a one-dimensional model that describes the conversion and the selectivity in the hydrogenation of cinnamaldehyde in a single channel of a monolithic reactor has been developed. In contrast to published models in the literature, effects of reduced bubble size due to chemical reactions are included. This leads to a local dependence of all hydrodynamic parameters such as bubble length, unit cell velocity, hold-up and film thickness and all mass transfer parameters such as coefficients and specific interfaces. Investigations of the influence of both the material properties such as dynamic viscosity, density, surface tension, diffusion coefficient and saturation concentration of H2, and the design parameters such as hydraulic diameter, catalyst loading and reactor length, on the reactor performance are discussed in detail. Moreover, the influence of system conditions such as unit cell length, superficial velocities, hold-ups, pressure and temperature, are also discussed. To enhance the developed model, improved correlations that describe mass transfer processes in such structures needs to be developed and crucial material properties, such as diffusion coefficients have to be determined with higher accuracy, since both aspects have a strong influence on the conversion and selectivity of the reaction.
Download or read book Encyclopedia of Microfluidics and Nanofluidics written by Dongqing Li and published by Springer Science & Business Media. This book was released on 2008-08-06 with total page 2242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering all aspects of transport phenomena on the nano- and micro-scale, this encyclopedia features over 750 entries in three alphabetically-arranged volumes including the most up-to-date research, insights, and applied techniques across all areas. Coverage includes electrical double-layers, optofluidics, DNC lab-on-a-chip, nanosensors, and more.
Download or read book Numerical Simulation of Multiphase Reactors with Continuous Liquid Phase written by Chao Yang and published by Academic Press. This book was released on 2014-09-04 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical simulation of multiphase reactors with continuous liquid phase provides current research and findings in multiphase problems, which will assist researchers and engineers to advance this field. This is an ideal reference book for readers who are interested in design and scale-up of multiphase reactors and crystallizers, and using mathematical model and numerical simulation as tools. Yang and Mao's book focuses on modeling and numerical applications directly in the chemical, petrochemical, and hydrometallurgical industries, rather than theories of multiphase flow. The content will help you to solve reacting flow problems and/or system design/optimization problems. The fundamentals and principles of flow and mass transfer in multiphase reactors with continuous liquid phase are covered, which will aid the reader's understanding of multiphase reaction engineering. - Provides practical applications for using multiphase stirred tanks, reactors, and microreactors, with detailed explanation of investigation methods - Presents the most recent research efforts in this highly active field on multiphase reactors and crystallizers - Covers mathematical models, numerical methods and experimental techniques for multiphase flow and mass transfer in reactors and crystallizers
Download or read book Hydrodynamics of Taylor Flow in Capillaries and Monolith Reactors written by Michiel Kreutzer and published by Delft University Press. This book was released on 2003-01-01 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This is a Ph.D. dissertation. Reactions involving gas, liquid and solid are found in many industrial processes. Usually, the solid is a heterogeneous catalyst, and the gas and liquid phases are the reactants. Because three phases are involved, the design "
Download or read book Structured Catalysts and Reactors written by Andrzej Cybulski and published by CRC Press. This book was released on 2005-11-02 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in structured catalysts is steadily increasing due to the already proven, as well as potential, advantages of these catalysts. Updating the comprehensive coverage of the first edition published in 1998 with the latest science and applications, Structured Catalysts and Reactors, Second Edition gives detailed information on all aspect
Download or read book Sonochemistry and the Acoustic Bubble written by Franz Grieser and published by Elsevier. This book was released on 2015-04-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sonochemistry and the Acoustic Bubble provides an introduction to the way ultrasound acts on bubbles in a liquid to cause bubbles to collapse violently, leading to localized 'hot spots' in the liquid with temperatures of 5000° celcius and under pressures of several hundred atmospheres. These extreme conditions produce events such as the emission of light, sonoluminescence, with a lifetime of less than a nanosecond, and free radicals that can initiate a host of varied chemical reactions (sonochemistry) in the liquid, all at room temperature. The physics and chemistry behind the phenomena are simply, but comprehensively presented. In addition, potential industrial and medical applications of acoustic cavitation and its chemical effects are described and reviewed. The book is suitable for graduate students working with ultrasound, and for potential chemists and chemical engineers wanting to understand the basics of how ultrasound acts in a liquid to cause chemical and physical effects.
Download or read book Process Analysis Design and Intensification in Microfluidics and Chemical Engineering written by Santana, Harrson Silva and published by IGI Global. This book was released on 2019-01-18 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microfluidics represent great potential for chemical processes design, development, optimization, and chemical engineering bolsters the project design of industrial processes often found in large chemical plants. Together, microfluidics and chemical engineering can lead to a more complete and comprehensive process. Process Analysis, Design, and Intensification in Microfluidics and Chemical Engineering provides emerging research exploring the theoretical and practical aspects of microfluidics and its application in chemical engineering with the intention of building pathways for new processes and product developments in industrial areas. Featuring coverage on a broad range of topics such as design techniques, hydrodynamics, and numerical modelling, this book is ideally designed for engineers, chemists, microfluidics and chemical engineering companies, academicians, researchers, and students.
Download or read book Novel Process Windows written by Volker Hessel and published by John Wiley & Sons. This book was released on 2015-03-23 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the concept of novel process windows, focusing on cost improvements, safety, energy and eco-efficiency throughout each step of the process. The first part presents the new reactor and process-related technologies, introducing the potential and benefit analysis. The core of the book details scenarios for unusual parameter sets and the new holistic and systemic approach to processing, while the final part analyses the implications for green and cost-efficient processing. With its practical approach, this is invaluable reading for those working in the pharmaceutical, fine chemicals, fuels and oils industries.
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Chemical Processing written by Sunggyu Lee and published by Taylor & Francis US. This book was released on 2006 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collecting information of vital interest to chemical, polymer, mechanical, electrical, and civil engineers, as well as chemists and chemical researchers, this "Encyclopedia "supplies nearly 350 articles on current design, engineering, science, and manufacturing practices-offering expertly written articles on technologies at the forefront of the field to maximize and enhance the research and production phases of current and emerging chemical manufacturing practices and techniques.
Download or read book Catalytic Reactors written by Basudeb Saha and published by Walter de Gruyter GmbH & Co KG. This book was released on 2015-12-18 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalytic Reactors presents several key aspects of reactor design in Chemical and Process Engineering. Starting with the fundamental science across a broad interdisciplinary field, this graduate level textbook offers a concise overview on reactor and process design for students, scientists and practitioners new to the field. This book aims to collate into a comprehensive and well-informed work of leading researchers from north America, western Europe and south-east Asia. The editor and international experts discuss state-of-the-art applications of multifunctional reactors, biocatalytic membrane reactors, micro-flow reactors, industrial catalytic reactors, micro trickle bed reactors and multiphase catalytic reactors. The use of catalytic reactor technology is essential for the economic viability of the chemical manufacturing industry. The importance of Chemical and Process Engineering and efficient design of reactors are another focus of the book. Especially the combination of advantages from both catalysis and chemical reaction technology for optimization and intensification as essential factors in the future development of reactors and processes are discussed. Furthermore, options that can drastically influence reaction processes, e.g. choice of catalysts, alternative reaction pathways, mass and heat transfer effects, flow regimes and inherent design of catalytic reactors are reviewed in detail. Focuses on the state-of-the-art applications of catalytic reactors and optimization in the design and operation of industrial catalytic reactors Insights into transfer of knowledge from laboratory science to industry For students and researchers in Chemical and Mechanical Engineering, Chemistry, Industrial Catalysis and practising Engineers
Download or read book Modeling of Process Intensification written by Frerich J. Keil and published by John Wiley & Sons. This book was released on 2007-04-09 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining the knowledge involved in process engineering and process modeling, this is the first book to cover all modeling methods applicable to process intensification. Both the editors and authors are renowned experts from industry and academia in the various fields of process modeling and integrated chemical processes. Following an introduction to the topic, the book goes on to look at equipment and operational methods, monolithic catalysis, HEX, micro- and reverse flow reactors, catalytic and reactive distillation, the simulated-moving bed and vibration bubble column as well as ultrasound and ultrasonic reactors. A final chapter is devoted to processes under supercritical conditions. In its treatment of hot topics of multidisciplinary interest, this book is of great value to researchers and engineers alike.
Download or read book Multiphase Catalytic Reactors written by Zeynep Ilsen Önsan and published by John Wiley & Sons. This book was released on 2016-07-05 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a holistic approach to multiphase catalytic reactors from their modeling and design to their applications in industrial manufacturing of chemicals Covers theoretical aspects and examples of fixed-bed, fluidized-bed, trickle-bed, slurry, monolith and microchannel reactors Includes chapters covering experimental techniques and practical guidelines for lab-scale testing of multiphase reactors Includes mathematical content focused on design equations and empirical relationships characterizing different multiphase reactor types together with an assortment of computational tools Involves detailed coverage of multiphase reactor applications such as Fischer-Tropsch synthesis, fuel processing for fuel cells, hydrotreating of oil fractions and biofuels processing
Download or read book Numerical Study of Transitions in Taylor Couette Flow written by Eric Magère and published by . This book was released on 1999 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling and Simulation of Heterogeneous Catalytic Processes written by and published by Academic Press. This book was released on 2014-09-22 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous catalysis and mathematical modeling are essential components of the continuing search for better utilization of raw materials and energy, with reduced impact on the environment. Numerical modeling of chemical systems has progressed rapidly due to increases in computer power, and is used extensively for analysis, design and development of catalytic reactors and processes. This book presents reviews of the state-of-the-art in modeling of heterogeneous catalytic reactors and processes. Reviews by leading authorities in the respective areas Up-to-date reviews of latest techniques in modeling of catalytic processes Mix of US and European authors, as well as academic/industrial/research institute perspectives Connections between computation and experimental methods in some of the chapters
Download or read book Computational heat and mass transfer CHMT 2001 Vol II written by and published by Editora E-papers. This book was released on with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1994 with total page 1592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
