Download or read book Inferential Control of Product Composition in a Distillation Column written by Juwari and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distillation Control written by F. Greg Shinskey and published by McGraw-Hill Companies. This book was released on 1984 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Batch Distillation Column Control written by Thaer Adnan Abdulla and published by . This book was released on 2019 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of an inferential soft sensor for a pilot-plant distillation column separating an ethanol-water mixture using neural network (NN) models has been investigated in this work. Inferential sensors are increasingly used in the process industries to infer the value of the main quality variable while utilizing much easier to measure secondary variables of the process. The lags between the input variables and the output variables vary due to changes in operating conditions. Previous studies have introduced different methods to estimate lags for input and output variables, but all of them have assumed these lags to be constant regardless of the changes in the operating conditions. In this work, an inferential sensor that can predict the composition of ethanol at the top product using time lags for the input variables and varied first-order time constant lags with the output variable has been developed. The developed inferential sensor is based on a neural network (NN) model. Principal Component Analysis (PCA) and Projection to Latent Structures (PLS) methods are used in this work to remove the outliers from the input variables set and to determine the most correlated values of the input variables and their lags with the output variable Xa (ethanol composition of distillate product) respectively. The model adaptively selects the correct first-order time constant lags of an output variable according to the instantaneous operating condition (the composition of ethanol is increased or decreased) and assigns a best value for each case. The experimental data resulting from the operation of pilot-scale batch distillation column of ethanol-water system has been used to build these NN models first and then to validate their performance. The proposed NN model structure with time lags for input variables and varied first-order time constant lags for output variable gave higher accuracy compared with the NN model without any time lag for input and output variables. This new developed NN based soft sensor has been used in an inferential proportional-integral (PI) control scheme to control the ethanol composition of the distillate. The initial inferential control results of using one tuning parameter set during the whole operation showed imperfect control results. So, using updated tuning parameter sets (gain scheduling/adaptive tuning) within this inferential PI control scheme based on the ethanol mole fraction region is necessary to improve the control performance. The results of this new developed PI control scheme showed a good control performance compared with the initial control results of this inferential controller using one set of tuning parameters. Then, this new developed NN based soft sensor has also been used in an advanced control scheme (model predictive control or MPC scheme). Two DeltaV MPC control schemes (MPC11 and MPC22) have been developed in this work. The control results of DeltaV MPC22 control scheme showed better control performance compared with other control schemes (inferential PI and MPC11 control schemes). This is due to the capability of this control scheme (MPC22) to handle the interactions between different variables (multivariable effect) especially for the distillation process. Also, it provided a faster response with very small undershoot or overshoot
Download or read book Albright s Chemical Engineering Handbook written by Lyle Albright and published by CRC Press. This book was released on 2008-11-20 with total page 1930 pages. Available in PDF, EPUB and Kindle. Book excerpt: From fundamentals to plant operations, Albright's Chemical Engineering Handbook offers a thorough, yet succinct guide to day-to-day methods and calculations used in chemical engineering applications. Leaders from an exceptional diversity of specialties provide a clear review of basic information, case examples, and references to additional information. They discuss essential principles, calculations, and key issues such as reaction engineering, process control and design, waste disposal, and electrochemical and biochemical engineering. The final chapters cover aspects of patents, intellectual property, communications, and ethics that are most relevant to engineers.
Download or read book Dynamics and Control of Chemical Reactors Distillation Columns and Batch Processes DYCORD 95 written by J.B. Rawlings and published by Elsevier. This book was released on 2014-05-23 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three important areas of process dynamics and control: chemical reactors, distillation columns and batch processes are the main topics of discussion and evaluation at the IFAC Symposium on Dynamics and Control of Chemical Reactors, Distillation Columns and Batch Processes (DYCORD '95). This valuable publication was produced from the latest in the series, providing a detailed assessment of developments of key technologies within the field of process dynamics and control.
Download or read book Dynamics and Control of Chemical Reactors and Distillation Columns written by C. McGreavy and published by Elsevier. This book was released on 2014-05-23 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the latest results of both academic and industrial research in the control, modelling and dynamics of two of the most fundamental constituents of all chemical engineering plant. Includes contributions on fixed-bed, gas-phase and tubular reactors, thermal cracking furnaces and distillation columns, related to applications in all major areas of chemical engineering, including petrochemicals and bulk chemical manufacture. Contains 51 papers.
Download or read book Nonlinear Inferential Control of a Distillation Column written by K. Jagadisan and published by . This book was released on 1979 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Distillation Control written by W.L. Luyben and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distillation column control has been the the "Lehigh inquisition" and survived! So it subject of many, many papers over the last has been tested by the fire of both actual half century. Several books have been de review by a hard-nosed plant experience and voted to various aspects of the subject. The group of practically oriented skeptics. technology is quite extensive and diffuse. In selecting the authors and the topics, There are also many conflicting opinions the emphasis has been on keeping the ma about some of the important questions. terial practical and useful, so some subjects We hope that the collection under one that are currently of mathematical and the cover of contributions from many of the oretical interest, but have not been demon leading authorities in the field of distillation strated to have practical importance, have control will help to consolidate, unify, and not been included. clarify some of this vast technology. The The book is divided about half and half contributing authors of this book represent between methodology and specific applica tion examples. Chapters 3 through 14 dis both industrial and academic perspectives, and their cumulative experience in the area cuss techniques and methods that have of distillation control adds up to over 400 proven themselves to be useful tools in at tacking distillation control problems.
Download or read book Development of a Device for Measurement and Control of Top Product Composition in a Distillation Column written by Kalyana Srinivasa Chakravarthy Nanduri and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics and Control of Continuous Distillation Units written by O. Rademaker and published by Elsevier Science & Technology. This book was released on 1975 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distillation Control written by F. Greg Shinskey and published by McGraw-Hill Companies. This book was released on 1977 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combined Internal Model and Inferential Control of a Distillation Column Via Closed loop Identification written by Kurt E. Häggblom and published by . This book was released on 1993 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tiet com 2000 written by Surekha Bhanot and published by Allied Publishers. This book was released on 2000 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimal State Estimation for Process Monitoring Fault Diagnosis and Control written by Ch. Venkateswarlu and published by Elsevier. This book was released on 2022-01-31 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimal State Estimation for Process Monitoring, Fault Diagnosis and Control presents various mechanistic model based state estimators and data-driven model based state estimators with a special emphasis on their development and applications to process monitoring, fault diagnosis and control. The design and analysis of different state estimators are highlighted with a number of applications and case studies concerning to various real chemical and biochemical processes. The book starts with the introduction of basic concepts, extending to classical methods and successively leading to advances in this field. Design and implementation of various classical and advanced state estimation methods to solve a wide variety of problems makes this book immensely useful for the audience working in different disciplines in academics, research and industry in areas concerning to process monitoring, fault diagnosis, control and related disciplines. - Describes various classical and advanced versions of mechanistic model based state estimation algorithms - Describes various data-driven model based state estimation techniques - Highlights a number of real applications of mechanistic model based and data-driven model based state estimators/soft sensors - Beneficial to those associated with process monitoring, fault diagnosis, online optimization, control and related areas
Download or read book Distillation Control written by Cecil L. Smith and published by John Wiley & Sons. This book was released on 2012-04-13 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn to Design the Best Control Configuration for Any Distillation Column Today, distillation is by far the most common separation technique used in the chemical and petroleum industries. All distillation columns need to be carefully controlled in order to meet specified production and quality levels. Distillation Control enables readers to do this by approaching the subject from a process to develop, analyze, and troubleshoot all aspects of column controls. Readers are efficiency and effectiveness and minimizing coats. Distillation Control begins with a chapter dedicated to underlying principles, including separation processes, reflux and boilup ratios, and composition dynamics. Next, the author covers such critical topics as: Composition control Pressure control and condensers Reboilers and feed preheaters Application of feedforward Unit optimization Complex towers As readers progress through the text, they’ll discover that the best control configuration for a distillation column is largely determined using steady-state process characteristics. The stage-by-stage separation models that the author sets forth for column design, therefore, provide information that is essential in developing the optimal control configuration. In addition to its clear explanations, Distillation Control is filled with clear diagrams and illustrations that clarify complex concepts and guide readers through multi-step procedures. Engineers as well as other professionals working in process facilities that use distillation to separate materials will fin that this book enables them to implement the latest tested and proven distillation control methods to meet their particular processing needs.
Download or read book Design of Distillation Column Control Systems written by P. Buckley and published by Butterworth-Heinemann. This book was released on 1986 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: A distillation column is both multivariable and nonlinear - and it consumes immense quantities of energy. Yet, despite the desigh challenges it presents, it is still the most popular unit operation for refining in industrial plants today. Much has been published on the subject of distillation column design, but much remains to be explained. That is why this book is unique. In a departure from the more traditional empirical and theoretical approaches, it introduced the reader to the practical realm, by presenting quantitative design techniques that have been demonstrated to be useful and valid over the course of hundreds of actual applications. The book is divided into three main parts. Part I, an introduction, presents an industrial perspective of control objectives. It discusses briefly the relationship between column design features and column controllability. It thus provides a short refresher course for chemical engineers and background for those trained in other branches of engineering. Part II, Concepts and Configurations, discusses column overhead and base arrangements, typical control schemes, and some hardware considerations. Part III is dedicated to quantitative design. Mathematical models are presented for pressure and differential pressure controls, liquid level control, and composition control of binary distillation. Emphasis on topics of primary interest to the control engineer Essentially nonmathematical treatment Ideal for those involved in troubleshooting existing columns as well to design engineers
Download or read book Multivariable Inferential Feedback Control of a Distillation Column written by Mosbah Hekmat Ahmet and published by . This book was released on 2003 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
