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Author : André Brink Erasmus
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (63 download)
Download or read book Mass Transfer in Structured Packing written by André Brink Erasmus and published by . This book was released on 2004 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Edison Tsai
Publisher :
ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.:/5 (671 download)
Download or read book Mass Transfer Area of Structured Packing written by Robert Edison Tsai and published by . This book was released on 2010 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mass transfer area of nine structured packings was measured as a function of liquid load, surface tension, liquid viscosity, and gas rate in a 0.427 m (16.8 in) ID column via absorption of CO2 from air into 0.1 mol/L NaOH. Surface tension was decreased from 72 to 30 mN/m via the addition of a surfactant (TERGITOL[trademark] NP-7). Viscosity was varied from 1 to 15 mPa·s using poly(ethylene oxide) (POLYOX[trademark] WSR N750). A wetted-wall column was used to verify the kinetics of these systems. Literature model predictions matched the wetted-wall column data within 10%. These models were applied in the interpretation of the packing results. The packing mass transfer area was most strongly dictated by geometric area (125 to 500 m2/m3) and liquid load (2.5 to 75 m3/m2·h or 1 to 30 gpm/ft2). A reduction in surface tension enhanced the effective area. The difference was more pronounced for the finer (higher surface area) packings (15 to 20%) than for the coarser ones (10%). Gas velocity (0.6 to 2.3 m/s), liquid viscosity, and channel configuration (45° vs. 60° or smoothed element interfaces) had no appreciable impact on the area. Surface texture (embossing) increased the area by 10% at most. The ratio of effective area to specific area (a[subscript e]/a[subscript p]) was correlated within limits of "13% for the experimental database: [mathematical formula]. This area model is believed to offer better predictive accuracy than the alternatives in the literature, particularly under aqueous conditions. Supplementary hydraulic measurements were obtained. The channel configuration significantly impacted the pressure drop. For a 45°-to-60° inclination change, pressure drop decreased by more than a factor of two and capacity expanded by 20%. Upwards of a two-fold increase in hold-up was observed from 1 to 15 mPa·s. Liquid load strongly affected both pressure drop and hold-up, increasing them by several-fold over the operational range. An economic analysis of an absorber in a CO2 capture process was performed. Mellapak[trademark] 250X yielded the most favorable economics of the investigated packings. The minimum cost for a 7 m MEA system was around $5-7/tonne CO2 removed for capacities in the 100 to 800 MW range.
Author : Nikolai Kolev
Publisher : Elsevier
ISBN 13 : 0080463924
Total Pages : 709 pages
Book Rating : 4.0/5 (84 download)
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
Author : David Mukuma Kawesha
Publisher :
ISBN 13 :
Total Pages : 342 pages
Book Rating : 4.:/5 (529 download)
Download or read book A Mass Transfer Model for Structured Packing written by David Mukuma Kawesha and published by . This book was released on 2002 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jozef Markoš
Publisher : BoD – Books on Demand
ISBN 13 : 9533076194
Total Pages : 322 pages
Book Rating : 4.5/5 (33 download)
Download or read book Mass Transfer in Chemical Engineering Processes written by Jozef Markoš and published by BoD – Books on Demand. This book was released on 2011-11-04 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers several solutions or approaches in solving mass transfer problems for different practical chemical engineering applications: measurements of the diffusion coefficients, estimation of the mass transfer coefficients, mass transfer limitation in separation processes like drying, extractions, absorption, membrane processes, mass transfer in the microbial fuel cell design, and problems of the mass transfer coupled with the heterogeneous combustion. I believe this book can provide its readers with interesting ideas and inspirations or direct solutions of their particular problems.
Author : Reinhard Billet
Publisher : Wiley-VCH
ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.3/5 (91 download)
Download or read book Packed Towers written by Reinhard Billet and published by Wiley-VCH. This book was released on 1995-02-22 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses important theoretical and practical aspects for the calculation, design and operation of packed towers. This text also outlines the advantages of packed towers, as opposed to plate towers, for saving energy and protecting the environment.
Author : Luke Howard Macfarlan
Publisher :
ISBN 13 :
Total Pages : 428 pages
Book Rating : 4.:/5 (128 download)
Download or read book Predictions of the Mass Transfer in Structured Packings Using Computational Fluid Dynamics written by Luke Howard Macfarlan and published by . This book was released on 2021 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical separations are widely performed in industry, with vapor-liquid contactors often accomplishing these separations and providing high-purity products. Structured packings are commonly employed in vapor-liquid contactors and exhibit low pressure drops, high throughputs, and excellent chemical separation performance. Despite the widespread use of these packings, the transport phenomena occurring within them are incompletely understood, inhibiting improvement efforts. Computational fluid dynamics (CFD) is a promising approach to predict the transport phenomena occurring inside the packings and to guide packing innovation. In this work, CFD predicted the gas-phase mass transfer performance of structured packings, and several key observations resulted. After a model for turbulence-aided mass transfer was identified with pipe flow simulations, the gas-phase mass transfer performance of a traditional structured packing was predicted. The mass transfer coefficients from CFD showed a five percent deviation compared to experimental data, validating the simulations. A geometry investigation determined the impact of three fundamental structured packing parameters on the packing performance. Improved mass transfer performance often occurred at the cost of hydrodynamic performance. Turbulence had a large impact on the gas-phase predictions. The liquid-phase mass transfer in structured packings was also simulated. A novel simulation methodology enabled the structured packing performance predictions. To validate the hydrodynamic predictions from the CFD simulations, the predicted liquid holdup was compared to experimental liquid holdup data and showed a deviation of six percent. Comparisons of the predicted liquid flow angle and friction factor to analytical expressions further validated the hydrodynamic CFD predictions. The liquid mass transfer coefficient predictions were validated with experimental data, having a deviation of eight percent, as well as with semi-empirical models. A structured packing geometry study was conducted for the liquid-phase performance, and liquid upheaval near packing crimps significantly contributed to the chemical separation. A novel interfacial mass transfer model was developed for multiphase CFD simulations. This model can handle concentration jumps of multiple orders of magnitude across the gas-liquid interface. An analytical solution to a two-dimensional system validated the CFD predictions, producing an error of less than one percent. The model was adapted for turbulent conditions and was demonstrated on a structured packing system
Author : Jerzy Mackowiak
Publisher : Springer Science & Business Media
ISBN 13 : 3540887814
Total Pages : 368 pages
Book Rating : 4.5/5 (48 download)
Download or read book Fluid Dynamics of Packed Columns written by Jerzy Mackowiak and published by Springer Science & Business Media. This book was released on 2009-12-10 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The?rstGermanedition of thebook“Fluiddynamicsofpackedcolumns with modern random and structured packings for gas/liquid systems” was published in 1991. It sold out within a few years. Added to this were numerous enquiries, in particular within the industry, prompting me to publish a second, extended edition. A packed column remains the core element of any diffusional separation process. This underlines the need for basic design principles for packed columns, which enhance the design process by making it more accurate and reliable. The SBD (suspended bed of droplets) model introduced in the ?rst German edition of the book was well received by the experts and is now used by a large number of com- nies in the industry, as it offers improved reliability in the ?uid dynamic design of packed columns. For the purpose of facilitating the design process, the SBD model was in- grated into the simulation programme ChemCAD. The software programme FDPAK, which is available for Windows, has certainly contributed to the widespread use of the SBD model. The programme is very user-friendly and the calculation results are p- sented in tabular as well as graphic form, showing ?ood load, pressure drop and hold-up diagrams in the entire operating range.
Author : P. V. Danckwerts
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.3/5 (91 download)
Download or read book Gas-liquid Reactions written by P. V. Danckwerts and published by . This book was released on 1970 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fouad Lebsir
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (115 download)
Download or read book Measurement of Mass Transfer Coefficients in a Structured Packing written by Fouad Lebsir and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Adisorn Aroonwilas
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (422 download)
Download or read book Mass Transfer in Structured Packing for CO2 Separation written by Adisorn Aroonwilas and published by . This book was released on 1999 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ralph F. Strigle
Publisher : Butterworth-Heinemann
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.3/5 (91 download)
Download or read book Packed Tower Design and Applications written by Ralph F. Strigle and published by Butterworth-Heinemann. This book was released on 1994 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. P. SINHA
Publisher : PHI Learning Pvt. Ltd.
ISBN 13 : 812034541X
Total Pages : 690 pages
Book Rating : 4.1/5 (23 download)
Download or read book Mass Transfer written by A. P. SINHA and published by PHI Learning Pvt. Ltd.. This book was released on 2012-05-09 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the fundamental principles of the mass transfer phenomenon and its diverse applications in process industry. It covers the full spectrum of techniques for chemical separations and extraction. Beginning with molecular diffusion in gases, liquids and solids within a single phase, the mechanism of inter-phase mass transfer is explained with the help of several theories. The separation operations are explained comprehensively in two distinct ways—stage-wise contact and continuous differential contact. The primary design requirements of gas–liquid equipment are discussed. The book provides a detailed discussion on all individual gas–liquid, liquid–liquid, solid–gas, and solid–liquid separation processes. The students are also exposed to the underlying principles of the membrane-based separation processes. The book is replete with real applications of separation processes and equipment. Problems are worked out in each chapter. Besides, problems with answers, short questions, multiple choice questions with answers are given at the end of each chapter. The text is intended for a course on mass transfer, transport and separation processes prescribed for the undergraduate and postgraduate students of chemical engineering.
Author : T. Hobler
Publisher : Elsevier
ISBN 13 : 1483155676
Total Pages : 542 pages
Book Rating : 4.4/5 (831 download)
Download or read book Mass Transfer and Absorbers written by T. Hobler and published by Elsevier. This book was released on 2013-10-22 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mass Transfer and Absorbers deals with absorption and mass transfer processes and the factors to consider in designing absorbers. Calculations are supported by a uniform, generalized process driving force, complying with Maxwell's equation, and the coefficients are made as independent as possible in terms of the kind of diffusion and of the values of the concentrations. This volume is comprised of seven chapters and begins with an overview of the general principles of diffusional mass transfer, absorption and stripping, and equilibrium between gas and liquid phases. Steady-state mass transfer by diffusion is then discussed, along with mass transfer in a single phase (forced flow and unforced flow). Subsequent chapters explore design considerations for mass transfer equipment and related problems; adsorption accompanied by a chemical reaction; and problems relating to hydrodynamics. The final chapter is devoted to some practical issues, including economic flow velocity and mechanical features of packed, plate, and spray tower designs. This book is intended for practicing designers and engineers.
Author : Adisorn Aroonwilas
Publisher :
ISBN 13 :
Total Pages : 538 pages
Book Rating : 4.:/5 (846 download)
Download or read book Mass-transfer with Chemical Reaction in Structured Packing for CO2 Absorption Process written by Adisorn Aroonwilas and published by . This book was released on 2001 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marcel Behrens
Publisher :
ISBN 13 : 9789090203478
Total Pages : 180 pages
Book Rating : 4.2/5 (34 download)
Download or read book Hydrodynamics and Mass Transfer of Modular Catalytic Structured Packing written by Marcel Behrens and published by . This book was released on 2006 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Spiegel
Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (343 download)
Download or read book Direct Heat and Mass Transfer in Structured Packings written by L. Spiegel and published by . This book was released on 1995 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
