Diffusion

Mass Transfer in Fluid Systems

Author: E. L. Cussler

Publisher: Cambridge University Press

ISBN: 0521871212

Category: Science

Page: 631

View: 307

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The clearest coverage available of diffusion and mass transfer, which is a key part of the chemical engineering curriculum.

Multiphase Catalytic Reactors

Theory, Design, Manufacturing, and Applications

Author: Zeynep Ilsen Önsan,Ahmet Kerim Avci

Publisher: John Wiley & Sons

ISBN: 1119248469

Category: Technology & Engineering

Page: 400

View: 6130

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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

Industrial Catalytic Processes for Fine and Specialty Chemicals

Author: Sunil S Joshi,Vivek V. Ranade

Publisher: Elsevier

ISBN: 0128016701

Category: Science

Page: 782

View: 5302

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Industrial Catalytic Processes for Fine and Specialty Chemicals provides a comprehensive methodology and state-of-the art toolbox for industrial catalysis. The book begins by introducing the reader to the interesting, challenging, and important field of catalysis and catalytic processes. The fundamentals of catalysis and catalytic processes are fully covered before delving into the important industrial applications of catalysis and catalytic processes, with an emphasis on green and sustainable technologies. Several case studies illustrate new and sustainable ways of designing catalysts and catalytic processes. The intended audience of the book includes researchers in academia and industry, as well as chemical engineers, process development chemists, and technologists working in chemical industries and industrial research laboratories. Discusses the fundamentals of catalytic processes, catalyst preparation and characterization, and reaction engineering Outlines the homogeneous catalytic processes as they apply to specialty chemicals Introduces industrial catalysis and catalytic processes for fine chemicals Includes a number of case studies to demonstrate the various processes and methods for designing green catalysts

Water Quality Engineering

Physical / Chemical Treatment Processes

Author: Mark M. Benjamin,Desmond F. Lawler

Publisher: John Wiley & Sons

ISBN: 1118632273

Category: Technology & Engineering

Page: 904

View: 3472

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Explains the fundamental theory and mathematics of water and wastewater treatment processes By carefully explaining both the underlying theory and the underlying mathematics, this text enables readers to fully grasp the fundamentals of physical and chemical treatment processes for water and wastewater. Throughout the book, the authors use detailed examples to illustrate real-world challenges and their solutions, including step-by-step mathematical calculations. Each chapter ends with a set of problems that enable readers to put their knowledge into practice by developing and analyzing complex processes for the removal of soluble and particulate materials in order to ensure the safety of our water supplies. Designed to give readers a deep understanding of how water treatment processes actually work, Water Quality Engineering explores: Application of mass balances in continuous flow systems, enabling readers to understand and predict changes in water quality Processes for removing soluble contaminants from water, including treatment of municipal and industrial wastes Processes for removing particulate materials from water Membrane processes to remove both soluble and particulate materials Following the discussion of mass balances in continuous flow systems in the first part of the book, the authors explain and analyze water treatment processes in subsequent chapters by setting forth the relevant mass balance for the process, reactor geometry, and flow pattern under consideration. With its many examples and problem sets, Water Quality Engineering is recommended as a textbook for graduate courses in physical and chemical treatment processes for water and wastewater. By drawing together the most recent research findings and industry practices, this text is also recommended for professional environmental engineers in search of a contemporary perspective on water and wastewater treatment processes.

Chemical Engineering for the Food Industry

Author: D. Leo Pyle,Peter J. Fryer,Chris D. Reilly

Publisher: Springer Science & Business Media

ISBN: 1461538645

Category: Technology & Engineering

Page: 462

View: 6908

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Industrial food processing involves the production of added value foods on a large scale; these foods are made by mixing and processing different ingredients in a prescribed way. The food industry, historically, has not designed its processes in an engineering sense, i.e. by understanding the physical and chemical principles which govern the operation of the plant and then using those principles to develop a process. Rather, processes have been 'designed' by purchasing equipment from a range of suppliers and then connecting that equipment together to form a complete process. When the process being run has essentially been scaled up from the kitchen then this may not matter. However, there are limits to the approach. • As the industry becomes more sophisticated, and economies of scale are exploited, then the size of plant reaches a scale where systematic design techniques are needed. • The range of processes and products made by the food industry has increased to include foods which have no kitchen counterpart, such as low-fat spreads. • It is vital to ensure the quality and safety of the product. • Plant must be flexible and able to cope with the need to make a variety of products from a range of ingredients. This is especially important as markets evolve with time. • The traditional design process cannot readily handle multi-product and multi-stream operations. • Processes must be energetically efficient and meet modern environmen tal standards.

Chemische Verfahrenstechnik

Berechnung, Auslegung und Betrieb chemischer Reaktoren

Author: Klaus Hertwig,Lothar Martens,Christof Hamel

Publisher: Walter de Gruyter GmbH & Co KG

ISBN: 3110498200

Category: Technology & Engineering

Page: 649

View: 984

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Ebenso praxisorientiertes wie theoretisch fundiertes Lehrbuch zur Modellierung, Gestaltung und Betrieb chemischer Reaktoren. Die Prozesse werden systematisch und mit mathematischenen Modell dargestellt. Dank zahlreicher Anwendungsbeispiele lernt der Leser, selbstständig technische Aufgabenstellungen, wie die Auslegung und Optimierung neuer Reaktoren, zu lösen. Die dritte Auflage enthält neue Reaktorkonzepte.

Advanced Transport Phenomena

Author: John C. Slattery

Publisher: Cambridge University Press

ISBN: 9780521635653

Category: Technology & Engineering

Page: 709

View: 8368

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Text on momentum, energy, and mass transfer for graduate engineering students.

Introduction to Chemical Engineering Fluid Mechanics

Author: William M. Deen

Publisher: Cambridge University Press

ISBN: 1316578089

Category: Technology & Engineering

Page: N.A

View: 5050

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Designed for introductory undergraduate courses in fluid mechanics for chemical engineers, this stand-alone textbook illustrates the fundamental concepts and analytical strategies in a rigorous and systematic, yet mathematically accessible manner. Using both traditional and novel applications, it examines key topics such as viscous stresses, surface tension, and the microscopic analysis of incompressible flows which enables students to understand what is important physically in a novel situation and how to use such insights in modeling. The many modern worked examples and end-of-chapter problems provide calculation practice, build confidence in analyzing physical systems, and help develop engineering judgment. The book also features a self-contained summary of the mathematics needed to understand vectors and tensors, and explains solution methods for partial differential equations. Including a full solutions manual for instructors available at www.cambridge.org/deen, this balanced textbook is the ideal resource for a one-semester course.

Bioreaction Engineering Principles

Second Edition

Author: Jens Nielsen,John Villadsen,Gunnar Lidén

Publisher: Springer

ISBN: 1461507677

Category: Technology & Engineering

Page: 528

View: 3218

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This is the second edition of the text "Bioreaction Engineering Principles" by Jens Nielsen and John Villadsen, originally published in 1994 by Plenum Press (now part of Kluwer). Time runs fast in Biotechnology, and when Kluwer Plenum stopped reprinting the first edition and asked us to make a second, revised edition we happily accepted. A text on bioreactions written in the early 1990's will not reflect the enormous development of experimental as well as theoretical aspects of cellular reactions during the past decade. In the preface to the first edition we admitted to be newcomers in the field. One of us (JV) has had 10 more years of job training in biotechnology, and the younger author (IN) has now received international recognition for his work with the hottest topics of "modem" biotechnology. Furthermore we are happy to have induced Gunnar Liden, professor of chemical reaction engineering at our sister university in Lund, Sweden to join us as co-author of the second edition. His contribution, especially on the chemical engineering aspects of "real" bioreactors has been of the greatest value. Chapter 8 of the present edition is largely unchanged from the first edition. We wish to thank professor Martin Hjortso from LSU for his substantial help with this chapter.

Multiphase Flow Dynamics 3

Turbulence, Gas Absorption and Release, Diesel Fuel Properties

Author: Nikolay Ivanov Kolev

Publisher: Springer Science & Business Media

ISBN: 354071443X

Category: Technology & Engineering

Page: 308

View: 9109

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In order to allow the application of the theory from all the three volumes also to processes in combustion engines a systematic set of internally consistent state equations for diesel fuel gas and liquid valid in broad range of changing pressure and temperature are provided also in Volume 3. Erlangen, October 2006 Nikolay Ivanov Kolev Table of contents 1 Some basics of the single-phase boundary layer theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 1 Flow over plates, velocity profiles, share forces, heat transfer. . . . . . . . . . . . . . . . . . . . 1 1. 1. 1 Laminar flow over the one site of a plane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. 1. 2 Turbulent flow parallel to plane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 2 Steady state flow in pipes with circular cross sections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1. 2. 1 Hydraulic smooth wall surface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1. 2. 2 Transition region. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1. 2. 3 Complete rough region. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1. 2. 4 Heat transfer to fluid in a pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 1. 3 Transient flow in pipes with circular cross sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2 Introduction to turbulence of multi-phase flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2. 1 Basic ideas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2. 2 Isotropy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 2. 3 Scales, eddy viscosity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 2. 3. 1 Small scale turbulent motion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 2. 3. 2 Large scale turbulent motion, Kolmogorov-Pandtl expression. . . . . . . . . 42 2. 4 k-eps framework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 3 Sources for fine resolution outside the boundary layer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 3. 1 Bulk sources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 3. 1. 1 Deformation of the velocity field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 3. 1. 2 Blowing and suction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wärme- und Stoffübertragung

Author: Hans Dieter Baehr,Karl Stephan

Publisher: Springer-Verlag

ISBN: 3662496771

Category: Science

Page: 808

View: 3872

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Dieses bewährte Lehrbuch ist eine umfassende und gründliche Darstellung der Wärme- und Stoffübertragung. Ihre Theorie wird systematisch entwickelt, und die Lösungsmethoden aller wichtigen Probleme werden ausführlich behandelt. Alle Gebiete der Wärme- und Stoffübertragung werden dargestellt: Wärmeleitung und Diffusion, konvektiver Wärme- und Stoffaustausch, Wärmetransport beim Kondensieren und Verdampfen, Wärmestrahlung sowie die Berechnung der Wärme- und Stoffübertrager. Die 9. Auflage wurde auf den neusten Stand gebracht, so z.B. die Berechnungsgleichungen und auf Messungen basierende Korrelationen des Wärme- und Stoffübergangs oder die Stoffwerttabellen und das Literaturverzeichnis. Inhaltliche Ergänzungen betreffen vor allem die Kapitel über den Wärmeübergang bei erzwungener turbulenter Strömung, ebenso bei freier und Überlagerung von freier und erzwungener Strömung. Zudem enthalten viele Tabellen nur noch Orientierungswerte und wurden damit übersichtlicher gestaltet.

Chemical Engineering and Chemical Process Technology - Volume III

Chemical Reaction Engineering

Author: Ryzhard Pohorecki,John Bridgwater,M. Molzahn. Rafiqul Gani and Crispulo Gallegos

Publisher: EOLSS Publications

ISBN: 1848263988

Category:

Page: 338

View: 9930

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Chemical Engineering and Chemical Process Technology is a theme component of Encyclopedia of Chemical Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty Encyclopedias. Chemical engineering is a branch of engineering, dealing with processes in which materials undergo changes in their physical or chemical state. These changes may concern size, energy content, composition and/or other application properties. Chemical engineering deals with many processes belonging to chemical industry or related industries (petrochemical, metallurgical, food, pharmaceutical, fine chemicals, coatings and colors, renewable raw materials, biotechnological, etc.), and finds application in manufacturing of such products as acids, alkalis, salts, fuels, fertilizers, crop protection agents, ceramics, glass, paper, colors, dyestuffs, plastics, cosmetics, vitamins and many others. It also plays significant role in environmental protection, biotechnology, nanotechnology, energy production and sustainable economical development. The Theme on Chemical Engineering and Chemical Process Technology deals, in five volumes and covers several topics such as: Fundamentals of Chemical Engineering; Unit Operations – Fluids; Unit Operations – Solids; Chemical Reaction Engineering; Process Development, Modeling, Optimization and Control; Process Management; The Future of Chemical Engineering; Chemical Engineering Education; Main Products, which are then expanded into multiple subtopics, each as a chapter. These five volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, managers, and decision makers and NGOs.

Applied Mathematical Methods for Chemical Engineers

Author: Norman W. Loney

Publisher: CRC Press

ISBN: 9780849308901

Category: Science

Page: 464

View: 3650

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Although most realistic process engineering models require numerical solution, it is important for chemical engineering students to have an understanding of the gross tendencies of the particular model they are using. This understanding most naturally arises from deriving analytical solutions of a modified version of the problem being considered. Analytical models also allow for easier process optimizations. Emphasizing these analytical methods, Applied Mathematical Methods for Chemical Engineers introduces several techniques essential to solving real problems. The author's presentation shows students how to translate a problem from prose to mathematical symbolism and allows them to inductively build on previous experience. Designed for senior undergraduates and first-year graduates, the text provides detailed examples that allow students to experience how to actually use the methods presented. It contains an entire chapter of fully worked examples involving traditional mass, heat, and momentum applications along with cutting edge technologies, such as membrane separation and chemical vapor deposition. Another chapter acquaints readers with selected numerical methods and available software packages. Favoring clear, practical exposition over strict mathematical rigor, Applied Mathematical Methods for Chemical Engineers removes the mathematics phobia that often exists among chemical engineering students. It allows them to learn by example the techniques they will need to solve problems in practice.

Transport Phenomena

An Introduction to Advanced Topics

Author: Larry A. Glasgow

Publisher: John Wiley & Sons

ISBN: 9781118031773

Category: Technology & Engineering

Page: 269

View: 3630

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Enables readers to apply transport phenomena principles to solve advanced problems in all areas of engineering and science This book helps readers elevate their understanding of, and their ability to apply, transport phenomena by introducing a broad range of advanced topics as well as analytical and numerical solution techniques. Readers gain the ability to solve complex problems generally not addressed in undergraduate-level courses, including nonlinear, multidimensional transport, and transient molecular and convective transport scenarios. Avoiding rote memorization, the author emphasizes a dual approach to learning in which physical understanding and problem-solving capability are developed simultaneously. Moreover, the author builds both readers' interest and knowledge by: Demonstrating that transport phenomena are pervasive, affecting every aspect of life Offering historical perspectives to enhance readers' understanding of current theory and methods Providing numerous examples drawn from a broad range of fields in the physical and life sciences and engineering Contextualizing problems in scenarios so that their rationale and significance are clear This text generally avoids the use of commercial software for problem solutions, helping readers cultivate a deeper understanding of how solutions are developed. References throughout the text promote further study and encourage the student to contemplate additional topics in transport phenomena. Transport Phenomena is written for advanced undergraduates and graduate students in chemical and mechanical engineering. Upon mastering the principles and techniques presented in this text, all readers will be better able to critically evaluate a broad range of physical phenomena, processes, and systems across many disciplines.

Membranen

Grundlagen, Verfahren und Industrielle Anwendungen

Author: Klaus Ohlrogge,Katrin Ebert

Publisher: John Wiley & Sons

ISBN: 352766033X

Category: Science

Page: 587

View: 938

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Von der Membran zum Verfahren - Der Einsatz von Membranverfahren in der chemischen Industrie weitet sich ungebremst aus. Als saubere und energiesparende Alternative zu herkömmlichen Trennverfahren halten die Membranverfahren weiterhin Einzug in vielfältige industrielle Anwendungen. Fest eingeführt sind solche Verfahren u. a. in der Gastrennung und der organophilen Filtration, und neue Perspektiven eröffnen sich für katalytische Reaktionen in Membranreaktoren. Die Membrantechnik ist die optimale Lösung bei der Behandlung von industriellen Abfällen ebenso wie für die kontrollierte Herstellung wertvoller Chemikalien. Das Buch behandelt die Grundlagen der Membranverfahrenstechnik über Modulkonfigurationen, Flüssig- und Gastrennung bis hin zu Membranen in der Brennstoffzelle, Medizintechnik und der Lebensmittelindustrie. Es ist eine wertvolle Informationsquelle für Praktiker und Betriebsingenieure ebenso wie für Neueinsteiger, die ein umfassendes Bild über die Anwendung von Membranen in der Verfahrenstechnik gewinnen wollen, aber auch für Planungsbüros und Umweltämter.

Wandern ohne Ziel

Von der Atomdiffusion zur Ausbreitung von Lebewesen und Ideen

Author: Gero Vogl

Publisher: Springer-Verlag

ISBN: 3540710647

Category: Science

Page: 200

View: 7247

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Ohne viel Mathematik zeigt der international erfahrene Autor hier die bestechenden Ähnlichkeiten verschiedener Wanderungsbewegungen auf. Sein verständliches Buch ist für alle Naturwissenschaftler zugänglich und liefert neue Einsichten in die Disziplinen außerhalb der Physik.

Introduction to Chemical Transport in the Environment

Author: John S. Gulliver

Publisher: Cambridge University Press

ISBN: 1139462458

Category: Technology & Engineering

Page: N.A

View: 6135

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This is a textbook for courses and independent study in environmental and chemical engineering, as well as in many other disciplines concerned with transport and diffusion of all manner of chemicals. Estimating the transport and fate of chemicals released into the environment is an interesting and challenging task. The global environment is large, on the chemical transport and fate scale. This text applies the mathematics of diffusion, turbulent diffusion and dispersion to the atmosphere, lakes, rivers, groundwater and the ocean, as well as transport between these media. The required theory is explained as a solution technique to solve the case studies and example problems. A large portion of the book is dedicated to examples and case studies, from which the important principles are derived.