Optimization And Control Of Semi Batch Reactors

Download Optimization And Control Of Semi Batch Reactors ebook PDF or Read Online books in PDF, EPUB, and Mobi Format. Click Download or Read Online button to Optimization And Control Of Semi Batch Reactors book pdf for free now.

Optimization And Control Of Semi Batch Reactors

Author : K. Yamuna Rani
ISBN : 3844302425
Genre :
File Size : 42.69 MB
Format : PDF, ePub
Download : 689
Read : 752

Batch and semi-batch reactors are used in the manufacture of low-volume high-value chemicals, where even a marginal increase in product yield can lead to considerably higher profits. Most of the present optimization and model based control schemes for semi-batch reactors are based on mechanistic models, whose development is a difficult and time- consuming exercise. Therefore, this book provides a new data driven approach for modeling, trajectory optimization and tracking of semi-batch reactors based on parameterization of input and output trajectories using orthonormal polynomials, and development of an artificial neural network model relating them using information available in historical databases. The generated optimal set point trajectories are tracked by developing data driven versions of generic model control. Simulation studies on semi-batch reactors illustrate their applicability. This can be useful to academic researchers working on data-driven modeling and optimization of batch processes and to industrial readers to explore the possibility of achieving better operational policies based on their historic operating data.
Category:

Dynamic Modelling And Optimization Of Polymerization Processes In Batch And Semi Batch Reactors

Author : W. H. B. W. Ibrahim
ISBN : OCLC:793676801
Genre :
File Size : 23.60 MB
Format : PDF, Mobi
Download : 363
Read : 1114

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.
Category:

Optimization In Food Engineering

Author : Ferruh Erdogdu
ISBN : 9781420061420
Genre : Technology & Engineering
File Size : 40.63 MB
Format : PDF, ePub
Download : 282
Read : 371

While mathematically sophisticated methods can be used to better understand and improve processes, the nonlinear nature of food processing models can make their dynamic optimization a daunting task. With contributions from a virtual who’s who in the food processing industry, Optimization in Food Engineering evaluates the potential uses and limitations of optimization techniques for food processing, including classical methods, artificial intelligence-genetic algorithms, multi-objective optimization procedures, and computational fluid dynamics. The book begins by delineating the fundamentals and methods for analytical and numerical procedures. It then covers optimization techniques and how they specifically apply to food processing. The final section digs deep into fundamental food processes and provides detailed explanation and examples from the most experienced and published authors in the field. This includes a range of processes from optimization strategies for improving the performance of batch reactors to the optimization of conventional thermal processing, microwave heating, freeze drying, spray drying, and refrigeration systems, to structural optimization techniques for developing beverage containers, optimization approaches for impingement processing, and optimal operational planning methodologies. Each chapter presents the required parameters for the given process with the optimization procedure to apply. An increasing part of the food processor’s job is to optimize systems to squeeze more dollars out of overhead to offset rising utility and transportation costs. Logically combining optimization techniques from many sources into a single volume focused on food production processes, this book provides real solutions to increases in energy, healthcare, and product liability costs that impact the bottom line in food production.
Category: Technology & Engineering

Fed Batch Cultures

Author : Henry C. Lim
ISBN : 9780521513364
Genre : Science
File Size : 42.92 MB
Format : PDF, ePub
Download : 165
Read : 776

This first book dealing exclusively with every aspect of fed-batch operations, used in most industrially important fermentation and bioreactor operations.
Category: Science

Coulson And Richardson S Chemical Engineering

Author : Sohrab Rohani
ISBN : 9780081012246
Genre : Technology & Engineering
File Size : 74.18 MB
Format : PDF, Mobi
Download : 345
Read : 575

Coulson and Richardson’s Chemical Engineering: Volume 3B: Process Control, Fourth Edition, covers reactor design, flow modeling, and gas-liquid and gas-solid reactions and reactors. Converted from textbooks into fully revised reference material Content ranges from foundational through to technical Added emerging applications, numerical methods and computational tools
Category: Technology & Engineering

Batch Processing Systems Engineering

Author : Gintaras V. Reklaitis
ISBN : 9783642609725
Genre : Science
File Size : 75.57 MB
Format : PDF, ePub
Download : 325
Read : 1160

Batch chemical processing has in the past decade enjoyed a return to respectability as a valuable, effective, and often preferred mode of process operation. This book provides the first comprehensive and authoritative coverage that reviews the state of the art development in the field of batch chemical systems engineering, applications in various chemical industries, current practice in different parts of the world, and future technical challenges. Developments in enabling computing technologies such as simulation, mathematical programming, knowledge based systems, and prognosis of how these developments would impact future progress in the batch domain are covered. Design issues for complex unit processes and batch plants as well as operational issues such as control and scheduling are also addressed.
Category: Science

Advanced Control Of Chemical Processes Adchem 91

Author : K. Najim
ISBN : 9781483298979
Genre : Science
File Size : 32.45 MB
Format : PDF, ePub, Mobi
Download : 631
Read : 931

This volume contains 40 papers which describe the recent developments in advanced control of chemical processes and related industries. The topics of adaptive control, model-based control and neural networks are covered by 3 survey papers. New adaptive, statistical, model-based control and artificial intelligence techniques and their applications are detailed in several papers. The problem of implementation of control algorithms on a digital computer is also considered.
Category: Science

Real Time Optimization

Author : Dominique Bonvin
ISBN : 9783038424482
Genre : Computers
File Size : 45.97 MB
Format : PDF, Kindle
Download : 325
Read : 622

This book is a printed edition of the Special Issue "Real-Time Optimization" that was published in Processes
Category: Computers

Chromatography

Author : Philip M. Boyer
ISBN : UCSD:31822020320891
Genre : Science
File Size : 44.80 MB
Format : PDF, ePub, Mobi
Download : 347
Read : 244

Category: Science

Manufacturing Modeling Management And Control Mim 2000

Author : Peter P. Groumpos
ISBN : UOM:39015047464899
Genre : Technology & Engineering
File Size : 23.58 MB
Format : PDF, ePub, Docs
Download : 932
Read : 310

This Proceedings contains the papers presented at the IFAC Symposium on Manufacturing, Modeling, Management and Control (MIM 2000), held in Patras, Greece, on 12-14 July 2000. MIM is a long-running series of IFAC meetings featuring the best work on the development, comparison and classification of manufacturing systems. In this Proceedings, key engineering topics, such as agile manufacturing and intelligent manufacturing, are presented alongside more management-related issues as well as some of the fundamental control theory applicable to these areas. Altogether, over 90 papers are presented.
Category: Technology & Engineering

Nonlinear Model Based Process Control

Author : Rashid M. Ansari
ISBN : UOM:39015042470024
Genre : Science
File Size : 73.77 MB
Format : PDF, ePub
Download : 474
Read : 209

The series Advances in Industrial Control aims to report and encourage technology transfer in control engineering. The rapid development of control technology has an impact on all areas of the control discipline. New theory, new controllers, actuators, sensors, new industrial processes, computer methods, new applications, new philosophies ... , new challenges. Much of this development work resides in industrial reports, feasibility study papers and the reports of advanced collaborative projects. The series offers an opportunity for researchers to present an extended exposition of such new work in all aspects of industrial control for wider and rapid dissemination. The last decade has seen considerable interest in reviving the fortunes of non linear control. In contrast to the approaches of the 60S, 70S and 80S a very pragmatic agenda for non-linear control is being pursued using the model-based predictive control paradigm. This text by R. Ansari and M. Tade gives an excellent synthesis of this new direction. Two strengths emphasized by the text are: (i) four applications found in refinery processes are used to give the text a firm practical continuity; (ii) a non-linear model-based control architecture is used to give the method a coherent theoretical framework.
Category: Science

Advanced Control Of Chemical Processes 1997 Adchem 97

Author : Sirish L. Shah
ISBN : UOM:39015039925733
Genre : Technology & Engineering
File Size : 34.57 MB
Format : PDF, ePub, Docs
Download : 577
Read : 356

Paperback. Advanced Control of Chemical Processes 1997 was an international event. It attracted a total of 205 participants from industry and academia around the world. Over 100 papers were presented at this symposium, including 3 plenary addresses and 6 keynote talks.The main themes included process monitoring, pulp and paper process control, model predictive control, and modelling and simulation.
Category: Technology & Engineering