Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Adaptive Dynamic Optimization Of The Semibatch Emulsion Polymerization Process full books in PDF, epub, and Kindle. Read online Adaptive Dynamic Optimization Of The Semibatch Emulsion Polymerization Process ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Mark Joseph Perri
Publisher :
ISBN 13 :
Total Pages : 657 pages
Book Rating : 4.:/5 (184 download)
Download or read book Adaptive Dynamic Optimization of the Semibatch Emulsion Polymerization Process written by Mark Joseph Perri and published by . This book was released on 1989 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Iván-Dario Gil
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (892 download)
Download or read book Modeling, Simulation, Dynamic Optimization and Control of a Semibatch Emulsion Polymerization Process written by Iván-Dario Gil and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, modeling, simulation, dynamic optimization and nonlinear control of an industrial emulsion polymerization process to produce poly-vinyl acetate (PVAc) are proposed. The reaction is modeled as a two-phase system composed of an aqueous phase and a particle phase. A detailed model is used to calculate the weight average molecular weight, the number average molecular weight and the dispersity. The moments of the growing and dead chains are used to represent the state of the polymer and to calculate the molecular weight distribution (MWD). The case study corresponds to an industrial reactor operated at a chemical company in Bogotá. An industrial scale reactor (11 m3 of capacity) is simulated where a semi-batch emulsion polymerization reaction of vinyl acetate is performed. Dynamic optimization problem is solved directly using a Nonlinear Programming solver. Integration of differential equations is made using Runge-Kutta method. Three different optimization problems are solved from the more simplistic (only one control variable: reactor temperature) to the more complex (three control variables : reactor temperature, initiator flow rate and monomer flow rate) in order to minimize the reaction time. A reduction of 25% of the batch time is achieved with respect to the normal operating conditions applied at the company. The results show that is possible to minimize the reaction time while some polymer desired qualities (conversion, molecular weight and solids content) satisfy the defined constraints. A nonlinear geometric control technique by using input/output linearization is adapted to the reactor temperature control. An extended Kalman filter (EKF) is implemented to estimate unmeasured states and it is tested in different cases including a robustness study where model errors are introduced to verify its good performance. After verification of controller performance, some process changes were proposed in order to improve process productivity and polymer quality. Finally, the optimal temperature profile and optimal feed policies of the monomer and initiator, obtained in a dynamic optimization step, are used to provide the optimal set points for the nonlinear control. The results show that the nonlinear controller designed here is appropriate to follow the optimal temperature trajectories calculated previously.
Author : R. Paulen
Publisher : Elsevier Inc. Chapters
ISBN 13 : 012808619X
Total Pages : 16 pages
Book Rating : 4.1/5 (28 download)
Download or read book 23 European Symposium on Computer Aided Process Engineering written by R. Paulen and published by Elsevier Inc. Chapters. This book was released on 2013-06-10 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study dynamic optimization of a lab-scale semi-batch emulsion copolymerization reactor for styrene and butyl acrylate in the presence of n-dodecyl mercaptan as chain transfer agent (CTA). The previously developed mathematical model of the polymerization reactions is used to predict the glass transition temperature of produced polymer, the global monomer conversion, the number and weight average molecular weights, the particle size distribution, and the amount of residual monomers. This model is implemented within gPROMS environment for modeling and optimization. It is desired to compute optimal profiles of feed rate of pre-emulsioned monomers and CTA which optimize properties (quantitative as well as qualitative) of polymers produced during the reaction subject to operational conditions and constraints.
Author : C. McGreavy
Publisher : Springer Science & Business Media
ISBN 13 : 9401113386
Total Pages : 245 pages
Book Rating : 4.4/5 (11 download)
Download or read book Polymer Reactor Engineering written by C. McGreavy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately half of the world production of the petrochemical industry (more than 100 million tonnes) is in the form of polymers, yet it would probably surprise most people to learn how much their lifestyle depends on polymers ranging, as they do, from detergents, kitchenware and electrical appliances to furnishings and a myriad other domestic goods. Still less are they likely to be aware of the extensive part they play in engineering applications for mechanical machine components and advanced high performance aircraft. This versatility derives from the fact that polymeric materials are made up of a range of molecules of varying length, whose properties are related to molecular structure and the proportions of the chains in the mixture. For example, polypropylene is a commodity polymer which is produced in hun dreds of different grades to meet specific market requirements. This depends on the catalyst as well as the operating conditions and reactor design. A major area for growth is in substituting polymers for conventional materials such as ceramics and metals. Not only can they match these materials in terms of mechanical strength and robustness but they have very good resistance to chemical attack. Polyamides, for example, are widely used for car bumpers and new polymers are being developed for engine manifolds and covers. In 1993 there is, typically, 100 kg of various polymers used in cars and this is continually increasing, giving a net weight reduction and hence better fuel economy.
Author : Richard A. Pethrick
Publisher : CRC Press
ISBN 13 : 9783718650750
Total Pages : 472 pages
Book Rating : 4.6/5 (57 download)
Download or read book Polymer Yearbook written by Richard A. Pethrick and published by CRC Press. This book was released on 1991 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains reviews on state-of-the-art Japanese research presented in the annual Spring and Autumn meetings of the Japanese Polymer Science Society. The aim of this section is to make information on the progress of Japanese Polymer Science, and on topics of current interest to polymer scientists in Japan, more easily available worldwide.
Author : W. H. B. W. Ibrahim
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (793 download)
Download or read book Dynamic Modelling and Optimization of Polymerization Processes in Batch and Semi-batch Reactors written by W. H. B. W. Ibrahim and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic modelling and optimization of three different processes namely (a) bulk polymerization of styrene, (b) solution polymerization of methyl methacrylate (MMA) and (c) emulsion copolymerization of Styrene and MMA in batch and semi-batch reactors are the focus of this work. In this work, models are presented as sets of differential-algebraic equations describing the process. Different optimization problems such as (a) maximum conversion (Xn), (b) maximum number average molecular weight (Mn) and (c) minimum time to achieve the desired polymer molecular properties (defined as pre-specified values of monomer conversion and number average molecular weight) are formulated. Reactor temperature, jacket temperature, initial initiator concentration, monomer feed rate, initiator feed rate and surfactant feed rate are used as optimization variables in the optimization formulations. The dynamic optimization problems were converted into nonlinear programming problem using the CVP techniques which were solved using efficient SQP (Successive Quadratic Programming) method available within the gPROMS (general PROcess Modelling System) software. The process model used for bulk polystyrene polymerization in batch reactors, using 2, 2 azobisisobutyronitrile catalyst (AIBN) as initiator was improved by including the gel and glass effects. The results obtained from this work when compared with the previous study by other researcher which disregarded the gel and glass effect in their study which show that the batch time operation are significantly reduced while the amount of the initial initiator concentration required increases. Also, the termination rate constant decreases as the concentration of the mixture increases, resulting rapid monomer conversion. The process model used for solution polymerization of methyl methacrylate (MMA) in batch reactors, using AIBN as the initiator and Toluene as the solvent was improved by including the free volume theory to calculate the initiator efficiency, f. The effects of different f was examined and compared with previous work which used a constant value of f 0.53. The results of these studies show that initiator efficiency, f is not constant but decreases with the increase of monomer conversion along the process. The determination of optimal control trajectories for emulsion copolymerization of Styrene and MMA with the objective of maximizing the number average molecular weight (Mn) and overall conversion (Xn) were carried out in batch and semi-batch reactors. The initiator used in this work is Persulfate K2S2O8 and the surfactant is Sodium Dodecyl Sulfate (SDS). Reduction of the pre-batch time increases the Mn but decreases the conversion (Xn). The sooner the addition of monomer into the reactor, the earlier the growth of the polymer chain leading to higher Mn. Besides that, Mn also can be increased by decreasing the initial initiator concentration (Ci0). Less oligomeric radicals will be produced with low Ci0, leading to reduced polymerization loci thus lowering the overall conversion. On the other hand, increases of reaction temperature (Tr) will decrease the Mn since transfer coefficient is increased at higher Tr leading to increase of the monomeric radicals resulting in an increase in termination reaction.
Author :
Publisher :
ISBN 13 :
Total Pages : 762 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1989 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Basudeb Saha
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110332981
Total Pages : 356 pages
Book Rating : 4.1/5 (13 download)
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 356 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
Author :
Publisher :
ISBN 13 :
Total Pages : 482 pages
Book Rating : 4.F/5 ( download)
Download or read book Polymer Yearbook written by and published by . This book was released on 1991 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Edward Houston
Publisher :
ISBN 13 :
Total Pages : 216 pages
Book Rating : 4.:/5 (144 download)
Download or read book Adaptive Optimizing Control of a Semibatch Polymerization Reactor written by William Edward Houston and published by . This book was released on 1986 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jayaraman Valadi
Publisher : Springer
ISBN 13 : 3319065084
Total Pages : 451 pages
Book Rating : 4.3/5 (19 download)
Download or read book Applications of Metaheuristics in Process Engineering written by Jayaraman Valadi and published by Springer. This book was released on 2014-08-07 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metaheuristics exhibit desirable properties like simplicity, easy parallelizability and ready applicability to different types of optimization problems such as real parameter optimization, combinatorial optimization and mixed integer optimization. They are thus beginning to play a key role in different industrially important process engineering applications, among them the synthesis of heat and mass exchange equipment, synthesis of distillation columns and static and dynamic optimization of chemical and bioreactors. This book explains cutting-edge research techniques in related computational intelligence domains and their applications in real-world process engineering. It will be of interest to industrial practitioners and research academics.
Author :
Publisher :
ISBN 13 :
Total Pages : 466 pages
Book Rating : 4.:/5 (94 download)
Download or read book Control and Dynamic Optimization of Polymerization Reaction Processes written by and published by . This book was released on 2004 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ali Cinar
Publisher : CRC Press
ISBN 13 : 0824748492
Total Pages : 566 pages
Book Rating : 4.8/5 (247 download)
Download or read book Batch Fermentation written by Ali Cinar and published by CRC Press. This book was released on 2003-04-01 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Illustrating techniques in model development, signal processing, data reconciliation, process monitoring, quality assurance, intelligent real-time process supervision, and fault detection and diagnosis, Batch Fermentation offers valuable simulation and control strategies for batch fermentation applications in the food, pharmaceutical, and chemical industries. The book provides approaches for determining optimal reference trajectories and operating conditions; estimating final product quality; modifying, adjusting, and enhancing batch process operations; and designing integrated real-time intelligent knowledge-based systems for process monitoring and fault diagnosis.
Author : M. F. Kemmere
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (422 download)
Download or read book Development of (Semi- ) Batch Emulsion Polymerization Processes written by M. F. Kemmere and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daisy Jauregui
Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (957 download)
Download or read book Synthesis and Optimization of Emulsion Polymers written by Daisy Jauregui and published by . This book was released on 2016 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthetic latex or resin is perhaps the most important component of any paint formulation. As the binder, it holds all ingredients in a paint together and is responsible for film formation. Various latexes are used in industry though acrylic resins have shown to impart superior paint properties.This project is concerned with the synthesis of an acrylic latex. Various emulsion polymerization processes were used including semi-batch, starved-feed, and in-situ seeded in the attempt to produce a stable latex that can be used in a broader study concerning the syneresis and rheology mechanisms of latex/thickener systems. In addition, this project investigates the optimization of the emulsion polymerization teaching lab used in the Polymers and Coatings masters program. Here, a batch emulsion polymerization process was studied and various particle stability aspects altered to produce a stable latex with minimum coagulum.
Author : Sirish Shah
Publisher : Elsevier
ISBN 13 : 9780080442976
Total Pages : 540 pages
Book Rating : 4.4/5 (429 download)
Download or read book Dynamics and Control of Process Systems 2004 written by Sirish Shah and published by Elsevier. This book was released on 2005-06-10 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Devyani Varshney
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (17 download)
Download or read book Optimal Experimental Design for Model Discrimination of Semi-batch Emulsion Polymerization Processes written by Devyani Varshney and published by . This book was released on 2015 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
