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Author : Masafumi Minami
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)
Download or read book Mixing Characteristics of High Viscous Fluid by a Multi-holed Static Mixer written by Masafumi Minami and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael John Cliff
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (117 download)
Download or read book Mixing of Viscous Liquids in an In-line Static Mixer written by Michael John Cliff and published by . This book was released on 1977 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work in this thesis is concerned with an investigation of the performance of a commercially available design of in-line motionless mixer and how this is affected by the major process variables. Much of the previously reported work on mixing studies has been based on empiricism, particularly that carried out on in-line mixers. Because of this it has been possible to identify several areas where an experimental and theoretical investigation would provide a useful and original contribution to the state of knowledge. The study has investigated the pressure drop and mixing characteristics of a Kenics in-line mixer, in laminar flow, using a range of Newtonian and non-Newtonian liquids. It has been shown that the pressure drop can be correlated by an equation of the Ergun type. A new mixing index, which aims to quantitatively express the goodness of mixing, has been determined over a wide range of operating conditions. This mixing index has been correlated with the major system variables using a number of mathematical techniques. A theoretical study of a twisted tape model has been carried out by tensor analysis techniques using a rotating helical co-ordinate system. A series of partial differential equations has been derived, which describe the behaviour of a fluid flowing through such a geometry.
Author :
Publisher :
ISBN 13 :
Total Pages : 570 pages
Book Rating : 4.F/5 ( download)
Download or read book Journal of Chemical Engineering of Japan written by and published by . This book was released on 2008 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of Kagaku kōgaku, v. 31-
Author : H. Benkreira
Publisher : CRC Press
ISBN 13 : 9781560321330
Total Pages : 480 pages
Book Rating : 4.3/5 (213 download)
Download or read book Fluid Mixing IV written by H. Benkreira and published by CRC Press. This book was released on 1990 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward L. Paul
Publisher : John Wiley & Sons
ISBN 13 : 0471451444
Total Pages : 1450 pages
Book Rating : 4.4/5 (714 download)
Download or read book Handbook of Industrial Mixing written by Edward L. Paul and published by John Wiley & Sons. This book was released on 2004-02-17 with total page 1450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Industrial Mixing will explain the difference and uses of a variety of mixers including gear mixers, top entry mixers, side entry mixers, bottom entry mixers, on-line mixers, and submerged mixers The Handbook discusses the trade-offs among various mixers, concentrating on which might be considered for a particular process. Handbook of Industrial Mixing explains industrial mixers in a clear concise manner, and also: * Contains a CD-ROM with video clips showing different type of mixers in action and a overview of their uses. * Gives practical insights by the top professional in the field. * Details applications in key industries. * Provides the professional with information he did receive in school
Author : Marco Scala
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (115 download)
Download or read book Characterization of Gas-liquid Hydrodynamics and Mass Transfer in SMX Static Mixers written by Marco Scala and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mixing of two or more fluids is a rather common operation in all industrial processes. The main target of the mixing is to increase the interface area between phases in order to improve mass and heat transfer and facilitate then chemical reaction. Among the multiphase mixing stands out the gas liquid dispersion. The aim of the present work is to examine a specific type of mixers, namely the static mixer. Static mixers are located into a housing or pipeline to ensure a high blending of fluids. They are usually made by a series of inserts, in turn designed by holes, helical elements and oblique blades. These elements cause local accelerations and stretching of the fluid currents to reach a high mixing efficiency. The wide applications of static mixers in numerous industrial processes require better knowledge of the hydrodynamics in these devices. The gas-liquid flow pattern through a Sulzer static mixer SMXTM mounted in a vertical cylindrical tube was investigated in this study. The main goal was to assess the performance of the Sulzer static mixer SMXTM for gas-liquid applications in industrial processes. Experimental data were collected from two main optical techniques, Backlight Shadowgraph Technique (BST) and Particle Image Velocimetry (PIV). 3D-printed static mixers were manufactured using transparent plastic in order to provide optical access. Three different liquids were used as the continuous phase, namely water, water with SDS and normal-heptane. The liquid phase was kept stagnant during the experiments. Five different lengths of mixers (with 1, 2, 5, 10 and 15 elements respectively) and several gaseous nitrogen flow rates from 1 to 10 l/h were analysed. The behaviour of the simple tube without mixing device, acting like a bubble column, was investigated as a reference, for comparison purposes with the SMXTM. Bubble diameter distributions at the inlet and outlet of the SMX mixers were evaluated. The velocity fields inside the mixers were quantified. The gas hold-up was also measured. The oxygen transfer performance in the SMX static mixer in air/water mixture was assessed by measuring the overall oxygen transferred. The mass transfer coefficient to the interfacial area kLa was determined and proved to be larger in the mixer. Volume-of-fluid numerical simulations of the mixer were performed with OpenFOAM. These 3D simulations were mainly focused on the behaviour of the SMX in an organic system at low gas flow rate (1 l/h). The numerical simulations were satisfactorily validated by experimental results. The comparison and the combination of the numerical and experimental results bring new insight into the flow pattern in a SMXTM static mixer.
Author : A. Dutta
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (366 download)
Download or read book Computational Analysis of Viscous Mixing in In-line Static Mixers Using P-SEM written by A. Dutta and published by . This book was released on 1996 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M.F. Edwards
Publisher : Elsevier
ISBN 13 : 1483136248
Total Pages : 213 pages
Book Rating : 4.4/5 (831 download)
Download or read book Fluid Mixing II written by M.F. Edwards and published by Elsevier. This book was released on 2013-09-17 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid Mixing II documents the proceedings of a symposium organized by the Yorkshire Branch and the Fluid Mixing Processes Subject Group of the Institution of Chemical Engineers and held at Bradford University, on 3-5 April 1984. The conference covers all aspects of mixing including the assessment of mixture quality, experimental and theoretical studies of mixing, chemical reaction and mass transfer, heat transfer, novel experimental techniques, scale-up and optimization. This volume contains 12 papers that deal with topics such as drawdown of floating solids into mechanically agitated vessels; effects of water/cement ratio, intensity of mixing, age and cement particle size and shape upon rheological properties of cement grouts with and without admixture; and mixing of non-absorbent solids with liquids. Other studies cover the flooding transition of a Rushton turbine operating in a gas-liquid system; power consumption in a three phase (liquid-solid-gas) mixing process in a stirred vessel; and an experimental technique for studying the rate of inter-zone mixing.
Author :
Publisher :
ISBN 13 :
Total Pages : 460 pages
Book Rating : 4.:/5 (318 download)
Download or read book Chemical Engineering Progress written by and published by . This book was released on 2005 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Guiqin Ye
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (59 download)
Download or read book Study of Mixing in Static Mixers Using Magnetic Resonance Imaging written by Guiqin Ye and published by . This book was released on 1998 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jaromír J. Ulbrecht
Publisher : Taylor & Francis
ISBN 13 : 9782881241123
Total Pages : 360 pages
Book Rating : 4.2/5 (411 download)
Download or read book Mixing of Liquids by Mechanical Agitation written by Jaromír J. Ulbrecht and published by Taylor & Francis. This book was released on 1985 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1985. Routledge is an imprint of Taylor & Francis, an informa company.
Author : Sudhanshu Soman
Publisher :
ISBN 13 :
Total Pages : 87 pages
Book Rating : 4.:/5 (973 download)
Download or read book Study of Effects of Design Modification in Static Mixer Geometry and Its Applications written by Sudhanshu Soman and published by . This book was released on 2016 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixing of fluids is one of the most important industrial operations. Static mixers, also known as motionless mixers, are very efficient devices used for mixing of both single phase and multiphase fluids. With a gradual increase in the usage of static mixers in various industrial operations, it is necessary to achieve higher mixing efficiency at the cost of minimum energy consumption. Mixing performance can be improved either by designing new internal geometry or by modifying an existing static mixer geometry. The objective of this research is to improve the mixing performance of static mixers by incorporating design modifications to the internal geometry. For that purpose, a static mixer with an open blade internal structure (such as SMX) was selected because of its complexed geometry and industrially proven mixing abilities. As a part of design modifications in the SMX mixer, perforations of varying sizes and different shapes of serrations were introduced to the static mixer blades using AutoCAD software. These modified static mixer geometries include perforated SMX with 2 holes of D/20 size on each blade, perforated SMX with 4 holes of D/20 size on each blade, perforated SMX with maximum number of D/20 holes, perforated SMX with maximum number of D/30 holes, perforated SMX with maximum number of D/40 holes, SMX with circular serrations, SMX with triangular serrations and lastly SMX with square shaped serrations. In order to select the best modified static mixer in terms of mixing performance, CFD simulations are performed using COMSOL Multiphysics software and the mixing performance of each modified static mixer geometry was compared with the standard SMX mixer. The mixing performance of each static mixer was compared on the basis of dispersive mixing and distributive mixing parameters. For laminar flow regime and incompressible fluid, simulation results for all the static mixers are first characterized in terms of pressure and velocity field, which showed good agreement with the literature data. For the comparison of dispersive mixing, shear rates and extensional efficiency of each static mixer is compared with that of a standard SMX mixer. Further, binary cluster particle tracer is injected in the flow domain to compute the distributive mixing capacity of static mixers. Distributive mixing of each mixer is quantified in terms of standard deviation. Based on the comparison of the simulation results for the dispersive and distributive mixing, the most efficient static mixer is targeted for its use in polymerization processes. Synthesis of polyacrylamide using a static mixer is explored in this research work. SMX mixer and the most efficient modified static mixer based on the overall mixing performance are chosen to carry out the homopolymerization of acrylamide using CFD simulations. It is observed that the modified static mixer performs better than the SMX mixer in terms of monomer conversion, reaction rate and polymer concentration.
Author : A W NIENOW
Publisher : Butterworth-Heinemann
ISBN 13 : 0080536581
Total Pages : 429 pages
Book Rating : 4.0/5 (85 download)
Download or read book Mixing in the Process Industries written by A W NIENOW and published by Butterworth-Heinemann. This book was released on 1997-09-11 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a valuable reference work for the student and the practising engineer in the chemical, pharmaceutical, minerals, food, plastics, paper and metallurgical industries. The second edition of this successful text has been thoroughly rewritten and updated. Based on the long running post-experience course produced by the University of Bradford, in association with the Institution of Chemical Engineers, it covers all aspects of mixing, from fundamentals through to design procedures in single and multi-phase systems. Experts from both industry and academia have contributed to this work giving both a theoretical practical approach. It covers dry and wet powders, single and two-phase liquids, solid/liquid and gas/liquid systems. The range of mixers available for such diverse duties is dealt with, including tumbler mixers for powders, mechanically agitated vessels, in-line continuous mixers and jet mixers. Coverage is given of the range of mixing objectives, varying from achieving product uniformity to obtaining optimum conditions for mass transfer and chemical reactions. This volume is a valuable reference work for the student and the practising engineer in the chemical, pharmaceutical, minerals, food, plastics, paper and metallurgical industries. The second edition of this successful text has been thoroughly rewritten and updated. Based on the long running post-experience course produced by the University of Bradford, in association with the Institution of Chemical Engineers, it covers all aspects of mixing, from fundamentals through to design procedures in single and multi-phase systems. Experts from both industry and academia have contributed to this work giving both a theoretical practical approach. It covers dry and wet powders, single and two-phase liquids, solid/liquid and gas/liquid systems. The range of mixers available for such diverse duties is dealt with, including tumbler mixers for powders, mechanically agitated vessels, in-line continuous mixers and jet mixers. Coverage is given of the range of mixing objectives, varying from achieving product uniformity to obtaining optimum conditions for mass transfer and chemical reactions.
Author : Suzanne M. Kresta
Publisher : John Wiley & Sons
ISBN 13 : 1118944305
Total Pages : 1032 pages
Book Rating : 4.1/5 (189 download)
Download or read book Advances in Industrial Mixing written by Suzanne M. Kresta and published by John Wiley & Sons. This book was released on 2015-10-21 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Industrial Mixing is a companion volume and update to the Handbook of Industrial Mixing. The second volume fills in gaps for a number of industries that were not covered in the first edition. Significant changes in five of the fundamental areas are covered in entirely updated or new chapters. The original text is provided as a searchable pdf file on the accompanying USB. This book explains industrial mixers and mixing problems clearly and concisely. Gives practical insights by the top professionals in the field, combining industrial design standards with fundamental insight. Details applications in 14 key industries. Six of these are new since the first edition. Provides the professional with information he/she did not receive in school. Five completely rewritten chapters on mixing fundamentals where significant advances have happened since the first edition and seven concise update chapters which summarize critical technical information.
Author : Vincent W. Uhl
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.3/5 (91 download)
Download or read book Mixing: Theory and Practice written by Vincent W. Uhl and published by . This book was released on 1966 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Apares Chakrabarti
Publisher :
ISBN 13 :
Total Pages : 297 pages
Book Rating : 4.:/5 (117 download)
Download or read book Mixing of Liquids in a Static In-line Mixer written by Apares Chakrabarti and published by . This book was released on 1979 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study has investigated the pressure drop and the mixing characteristics of the Kenics static in-line mixer, using 1Newtonian and non-Newtonian liquids. The pressure drop study was carried out over a range of flow rates and the dimensionless friction factor and Reynolds number were correlated by an Ergun type equation. The results showed that a turbulence occurs at a Reynolds number of about 200. The mixing characteristics of the mixer were investigated................
Author : A. Tennison
Publisher :
ISBN 13 :
Total Pages : 241 pages
Book Rating : 4.:/5 (117 download)
Download or read book Momentum and Heat Transfer in an In-line Static Mixer written by A. Tennison and published by . This book was released on 1978 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: STATIC MIXERS, HEAT TRANSFER, FLUID FLOW, FLOW VELOCITY, PRESSURE DROP, LAMINAR FLOW, VISCOSITY.
