Author: Anusorn SangnimnuanPublisher:
ISBN:
Category : Chemical reactors
Languages : en
Pages :
Book Description
Gas Hold-up and Liquid-phase Backmixing in Bubble-column Reactors
Author: Anusorn SangnimnuanPublisher:
ISBN:
Category : Chemical reactors
Languages : en
Pages :
Book Description
Gas Holdup and Liquid Phase Mixing in Trayed Bubble Column Reactors
Author: Javier AlvaréGas Phase Backmixing in Bubble Column Reactors Effect of Gas and Liquid Phase Properties
Author: Milind Vasant KantakPublisher:
ISBN:
Category : Chemical reactors
Languages : en
Pages : 364
Book Description
Bubble Column Reactions
Author: Wolf-Dieter DeckwerPublisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 564
Book Description
This technology, though used for many years, has shown great vitality recently and is still in a state of flux. Provides an account of developments up to the present and also an orderly evaluation of literature already published on the subject. Considerable space is devoted to bubble column reactor performance predictions based on mathematical models and the importance of each is explained with practical examples.
Hydrodynamics and Transport Processes of Inverse Bubbly Flow
Author: Subrata Kumar MajumderPublisher: Elsevier
ISBN: 012803288X
Category : Science
Languages : en
Pages : 464
Book Description
Hydrodynamics and Transport Processes of Inverse Bubbly Flow provides the science and fundamentals behind hydrodynamic characteristics, including flow regimes, gas entrainment, pressure drop, holdup and mixing characteristics, bubble size distribution, and the interfacial area of inverse bubble flow regimes. Special attention is given to mass and heat transfer. This book is an indispensable reference for researchers in academia and industry working in chemical and biochemical engineering. Hydrodynamics and Transport Processes of Inverse Bubbly Flow helps facilitate a better understanding of the phenomena of multiphase flow systems as used in chemical and biochemical industries. - A first book in the market dedicated to the hydrodynamics of inverse bubbly flows - Includes fundamentals of conventional and inverse bubble columns for different hydrodynamic parameters - Includes recommendations for future applications of bubble flows
Chemical Reactors for Gas-liquid Systems
Author: František KaštánekPublisher: Prentice Hall
ISBN:
Category : Science
Languages : en
Pages : 420
Book Description
Originating from a research programme carried out at the Institute of Chemical Process Fundamentals, Prague, this volume aims to provide a review of current knowledge in the field of gas-liquid reactors, relating the results of theoretical studies to practical reactor design.
Modeling of Gas and Liquid Phase Mixing with Reaction in Bubble Column Reactors
Author: Qingqi WangBubbly Flows
Author: Martin SommerfeldPublisher: Springer Science & Business Media
ISBN: 3642185401
Category : Science
Languages : en
Pages : 354
Book Description
The book summarises the outcom of a priority research programme: 'Analysis, Modelling and Computation of Multiphase Flows'. The results of 24 individual research projects are presented. The main objective of the research programme was to provide a better understanding of the physical basis for multiphase gas-liquid flows as they are found in numerous chemical and biochemical reactors. The research comprises steady and unsteady multiphase flows in three frequently found reactor configurations, namely bubble columns without interiors, airlift loop reactors, and aerated stirred vessels. For this purpose new and improved measurement techniques were developed. From the resulting knowledge and data, new and refined models for describing the underlying physical processes were developed, which were used for the establishment and improvement of analytic as well as numerical methods for predicting multiphase reactors. Thereby, the development, lay-out and scale-up of such processes should be possible on a more reliable basis.
Experimental Analysis and Modeling of Industrial Two-Phase Flows in Bubble Column Reactors
Author: Melanie BothePublisher: Cuvillier Verlag
ISBN: 3736981937
Category : Technology & Engineering
Languages : en
Pages : 148
Book Description
This thesis contributes to a more rigorous modeling of the specific interfacial area in bubble column reactors through selected measurements at the laboratory-scale using the endoscopic measurement method which was further developed within this work. The new approach effectively complements correlations with global parameters. This in turn enables a more precise prediction of the specific interfacial area for the design and scale-up as well as for numerical simulations.
Fluid Dynamics and Scale-up of Bubble Columns with Internals
Author: Ahmed Abouelfetouh YoussefPublisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 160
Book Description
Bubble columns and slurry bubble columns, as multiphase reactors, are favored for a wide range of applications in the chemical, biochemical, petrochemical and metallurgical industries. They are considered the reactor of choice for the Fischer Tropsch synthesis, among other applications, offering an alternative energy source and providing clean liquid fuels as compared to other reactors. Most of the industrial applications of bubble column reactors require the utilization of heat exchanging tubes, the effect of which on the reactor's performance is not fully understood. This study proposes detailed investigations of selected local hydrodynamics in bubble columns with and without internal heat exchanging tubes. The main focus of this dissertation is to enhance the understanding of the phenomena associated with the local gas holdup and the bubble dynamics (specific interfacial area, frequency, velocity, and chord length) and their radial profiles via detailed experimentations by means of the four-point optical fiber probe as a measuring technique. In addition, the liquid phase mixing is investigated. The effects of the presence of cooling tubes, which are commonly used in industrial applications of bubble columns, are thoroughly investigated in columns of different diameters to assess the effect of scale. Based on the insights gained from the above, one of the main limitations in bubble columns, scale up, is to be tackled in this study. A new approach, yet simple, for designing the reactor in order to reduce the scale-up risk is developed making use of the necessary heat exchanging vertical internals in controlling the effect of scale through reactor compartmentalization leading to an optimized, yet efficient, design of large scale bubble columns. The main findings of this work can be summarized as follows: The impact of vertical internals on bubble dynamics and liquid phase mixing is assessed: Increase in gas holdup, interfacial area. Decrease in bubble size due to higher break-up rates. Enhancement in the large scale recirculation cells. Increase in the liquid phase mixing. The new scaling methodology was proposed and proven viable.