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Investigation Of Robust Techniques For The Design Of Chemical Processes Under Uncertainty
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Book Synopsis Investigation of Robust Techniques for the Design of Chemical Processes Under Uncertainty by : Luis Felipe Dominguez Palomeque
Download or read book Investigation of Robust Techniques for the Design of Chemical Processes Under Uncertainty written by Luis Felipe Dominguez Palomeque and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty by : Robert Koller
Download or read book Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty written by Robert Koller and published by . This book was released on 2017 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimization of multiproduct processes is vital for process performance, especially during dynamic transitions between operating points. However, determining the optimal operating conditions can be a challenging problem, since many aspects must be considered, such as design, control, and scheduling. This problem is further complicated by process disturbances and parameter uncertainty, which are typically randomly distributed variables that traditional methods of optimization are not equipped to handle. Multi-scenario approaches that consider every possible realization are also impractical, as they quickly become computationally prohibitive for large-scale applications. Therefore, new methods are emerging for generating robust solutions without adding excessive complexity. This thesis focuses on the development of two of those optimization methods for the integration of design, control, and scheduling for multi-product processes in the presence of disturbances and parameter uncertainty. Firstly, a critical set method is presented, which decomposes the overall problem into flexibility and feasibility analyses. The flexibility problem is solved under a critical (worst-case) set of disturbance and uncertainty realizations, which is faster than considering the entire (non-critical) set. The feasibility problem evaluates the dynamic feasibility of the entire set, and updates the critical set accordingly, adding any realizations that are found to be infeasible. The algorithm terminates when a robust solution is found, which is feasible under all identified scenarios. To account for the importance of grade transitions in multiproduct processes, the proposed framework integrates scheduling into the dynamic model by the use of flexible finite elements. The critical set method is applied to two case studies, a continuous stirred-tank reactor (CSTR) and a plug flow reactor (PFR), both subject to process disturbance and parameter uncertainty. The proposed method is shown to return robust solutions that are of higher quality than the traditional sequential method, which determines the design, control, and scheduling independently. This work also considers the development of a back-off method for integration of design, control, and scheduling for multi-product systems subject to disturbances and parameter uncertainty. The key feature of this method is the consideration of stochastic random variables for the process disturbance and parameter uncertainty, while most works discretize these variables. This method employs Monte Carlo (MC) sampling to generate a large number of random realizations, and simulate the system to determine feasibility. Back-off terms are determined and incorporated into a new flexibility analysis to approximate the effect of stochastic uncertainty and disturbances. The back-off terms are refined through successive iterations, and the algorithm converges, terminating on a solution that is robust to a specified level of process variability. The back-off method is applied to a similar CSTR case study for which optimal design, control, and scheduling decisions are identified, subject to stochastic uncertainty and disturbance. Another scenario is analyzed, where the CSTR is controlled in open-loop, and the control actions are determined directly from the optimization. The back-off method successfully produces solutions in both scenarios, which are robust to specified levels of variability, and consider stochastic representations of process disturbance and parameter uncertainty. The results from the case studies indicate that there are interactions between optimal design, control, scheduling, disturbance, and uncertainty, thus motivating the need for integration of all these aspects using the methods described in this thesis. The solutions provided by the critical set method and the back-off can be compared, since the methods are applied to the same CSTR case study, aside from the differences in disturbance and uncertainty. The back-off method offers a slightly improved solution, though the critical set method demands much less computational time. Therefore, both methods have benefits and limitations, so the optimal method would depend on the available computational time, and the desired quality and robustness of the solution.
Book Synopsis FOCAPD-19/Proceedings of the 9th International Conference on Foundations of Computer-Aided Process Design, July 14 - 18, 2019 by : Salvador Garcia Munoz
Download or read book FOCAPD-19/Proceedings of the 9th International Conference on Foundations of Computer-Aided Process Design, July 14 - 18, 2019 written by Salvador Garcia Munoz and published by Elsevier. This book was released on 2019-07-09 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: FOCAPD-19/Proceedings of the 9th International Conference on Foundations of Computer-Aided Process Design, July 14 - 18, 2019, compiles the presentations given at the Ninth International Conference on Foundations of Computer-Aided Process Design, FOCAPD-2019. It highlights the meetings held at this event that brings together researchers, educators and practitioners to identify new challenges and opportunities for process and product design. - Combines presentations from the Ninth International Conference on Foundations of Computer-Aided Process Design, FOCAPD-2019
Book Synopsis Chemical Process Design by : Alexandre C. Dimian
Download or read book Chemical Process Design written by Alexandre C. Dimian and published by John Wiley & Sons. This book was released on 2008-04-09 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical how-to-do book deals with the design of sustainable chemical processes by means of systematic methods aided by computer simulation. Ample case studies illustrate generic creative issues, as well as the efficient use of simulation techniques, with each one standing for an important issue taken from practice. The didactic approach guides readers from basic knowledge to mastering complex flow-sheets, starting with chemistry and thermodynamics, via process synthesis, efficient use of energy and waste minimization, right up to plant-wide control and process dynamics. The simulation results are compared with flow-sheets and performance indices of actual industrial licensed processes, while the complete input data for all the case studies is also provided, allowing readers to reproduce the results with their own simulators. For everyone interested in the design of innovative chemical processes.
Book Synopsis Optimization of Chemical Processes Under Uncertainty in the Case of Insufficient Process Data at the Operation Stage by : Ivan Datskov
Download or read book Optimization of Chemical Processes Under Uncertainty in the Case of Insufficient Process Data at the Operation Stage written by Ivan Datskov and published by . This book was released on 2004 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 21st European Symposium on Computer Aided Process Engineering by : E. N. Pistikopoulos
Download or read book 21st European Symposium on Computer Aided Process Engineering written by E. N. Pistikopoulos and published by Elsevier. This book was released on 2011-07-21 with total page 2087 pages. Available in PDF, EPUB and Kindle. Book excerpt: The European Symposium on Computer Aided Process Engineering (ESCAPE) series presents the latest innovations and achievements of leading professionals from the industrial and academic communities. The ESCAPE series serves as a forum for engineers, scientists, researchers, managers and students to present and discuss progress being made in the area of computer aided process engineering (CAPE). European industries large and small are bringing innovations into our lives, whether in the form of new technologies to address environmental problems, new products to make our homes more comfortable and energy efficient or new therapies to improve the health and well being of European citizens. Moreover, the European Industry needs to undertake research and technological initiatives in response to humanity's "Grand Challenges," described in the declaration of Lund, namely, Global Warming, Tightening Supplies of Energy, Water and Food, Ageing Societies, Public Health, Pandemics and Security. Thus, the Technical Theme of ESCAPE 21 will be "Process Systems Approaches for Addressing Grand Challenges in Energy, Environment, Health, Bioprocessing & Nanotechnologies."
Book Synopsis Statistical Approaches With Emphasis on Design of Experiments Applied to Chemical Processes by : Valter Silva
Download or read book Statistical Approaches With Emphasis on Design of Experiments Applied to Chemical Processes written by Valter Silva and published by BoD – Books on Demand. This book was released on 2018-03-07 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimized operating conditions for complex systems can be attained by using advanced combinations of numerical and statistical methodologies. One of the most efficient and straightforward solutions relies on the application of statistical methods with an emphasis on the design of experiments (DoEs). Throughout the book, the design and analysis of experiments are conducted involving several approaches, namely, Taguchi, response surface methods, statistical correlations, or even fractional factorial and model-based evolutionary operation designs. This book not only presents a theoretical overview about the different approaches but also contains material that covers the use of the experimental analysis applied to several chemical processes. Some chapters highlight the use of software products to assist experimenters in both the design and analysis stages. It helps graduate students, teachers, researchers, and other professionals who are interested in chemical process optimization and also provides a good basis of theoretical knowledge and valuable insights into the technical details of these tools as well as explains common pitfalls to avoid. The world's leading pharmaceutical companies and local governments are trying to achieve their eradication.
Book Synopsis 27th European Symposium on Computer Aided Process Engineering by :
Download or read book 27th European Symposium on Computer Aided Process Engineering written by and published by Elsevier. This book was released on 2017-09-21 with total page 3064 pages. Available in PDF, EPUB and Kindle. Book excerpt: 27th European Symposium on Computer Aided Process Engineering, Volume 40 contains the papers presented at the 27th European Society of Computer-Aided Process Engineering (ESCAPE) event held in Barcelona, October 1-5, 2017. It is a valuable resource for chemical engineers, chemical process engineers, researchers in industry and academia, students, and consultants for chemical industries. - Presents findings and discussions from the 27th European Society of Computer-Aided Process Engineering (ESCAPE) event
Book Synopsis Advanced Control of Chemical Processes 1994 by : D. Bonvin
Download or read book Advanced Control of Chemical Processes 1994 written by D. Bonvin and published by Elsevier. This book was released on 2014-05-23 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication brings together the latest research findings in the key area of chemical process control; including dynamic modelling and simulation - modelling and model validation for application in linear and nonlinear model-based control: nonlinear model-based predictive control and optimization - to facilitate constrained real-time optimization of chemical processes; statistical control techniques - major developments in the statistical interpretation of measured data to guide future research; knowledge-based v model-based control - the integration of theoretical aspects of control and optimization theory with more recent developments in artificial intelligence and computer science.
Book Synopsis 29th European Symposium on Computer Aided Chemical Engineering by : Anton A. Kiss
Download or read book 29th European Symposium on Computer Aided Chemical Engineering written by Anton A. Kiss and published by Elsevier. This book was released on 2019-06-28 with total page 1886 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 29th European Symposium on Computer Aided Process Engineering, contains the papers presented at the 29th European Symposium of Computer Aided Process Engineering (ESCAPE) event held in Eindhoven, The Netherlands, from June 16-19, 2019. It is a valuable resource for chemical engineers, chemical process engineers, researchers in industry and academia, students, and consultants for chemical industries. - Presents findings and discussions from the 29th European Symposium of Computer Aided Process Engineering (ESCAPE) event
Book Synopsis Proceedings of the 8th International Conference on Foundations of Computer-Aided Process Design by :
Download or read book Proceedings of the 8th International Conference on Foundations of Computer-Aided Process Design written by and published by Elsevier. This book was released on 2014-07-14 with total page 835 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume collects together the presentations at the Eighth International Conference on Foundations of Computer-Aided Process Design, FOCAPD-2014, an event that brings together researchers, educators, and practitioners to identify new challenges and opportunities for process and product design. The chemical industry is currently entering a new phase of rapid evolution. The availability of low-cost feedstocks from natural gas is causing renewed investment in basic chemicals in the OECD, while societal pressures for sustainability and energy security continue to be key drivers in technology development and product selection. This dynamic environment creates opportunities to launch new products and processes and to demonstrate new methodologies for innovation, synthesis and design. FOCAPD-2014 fosters constructive interaction among thought leaders from academia, industry, and government and provides a showcase for the latest research in product and process design. - Focuses exclusively on the fundamentals and applications of computer-aided design for the process industries. - Provides a fully archival and indexed record of the FOCAPD14 conference - Aligns the FOCAPD series with the ESCAPE and PSE series
Book Synopsis Robust Algorithms for Optimization of Chemical Processes in the Presence of Model-Plant Mismatch by : Jasdeep Singh Mandur
Download or read book Robust Algorithms for Optimization of Chemical Processes in the Presence of Model-Plant Mismatch written by Jasdeep Singh Mandur and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Process models are always associated with uncertainty, due to either inaccurate model structure or inaccurate identification. If left unaccounted for, these uncertainties can significantly affect the model-based decision-making. This thesis addresses the problem of model-based optimization in the presence of uncertainties, especially due to model structure error. The optimal solution from standard optimization techniques is often associated with a certain degree of uncertainty and if the model-plant mismatch is very significant, this solution may have a significant bias with respect to the actual process optimum. Accordingly, in this thesis, we developed new strategies to reduce (1) the variability in the optimal solution and (2) the bias between the predicted and the true process optima. Robust optimization is a well-established methodology where the variability in optimization objective is considered explicitly in the cost function, leading to a solution that is robust to model uncertainties. However, the reported robust formulations have few limitations especially in the context of nonlinear models. The standard technique to quantify the effect of model uncertainties is based on the linearization of underlying model that may not be valid if the noise in measurements is quite high. To address this limitation, uncertainty descriptions based on the Bayes' Theorem are implemented in this work. Since for nonlinear models the resulting Bayesian uncertainty may have a non-standard form with no analytical solution, the propagation of this uncertainty onto the optimum may become computationally challenging using conventional Monte Carlo techniques. To this end, an approach based on Polynomial Chaos expansions is developed. It is shown in a simulated case study that this approach resulted in drastic reductions in the computational time when compared to a standard Monte Carlo sampling technique. The key advantage of PC expansions is that they provide analytical expressions for statistical moments even if the uncertainty in variables is non-standard. These expansions were also used to speed up the calculation of likelihood function within the Bayesian framework. Here, a methodology based on Multi-Resolution analysis is proposed to formulate the PC based approximated model with higher accuracy over the parameter space that is most likely based on the given measurements. For the second objective, i.e. reducing the bias between the predicted and true process optima, an iterative optimization algorithm is developed which progressively corrects the model for structural error as the algorithm proceeds towards the true process optimum. The standard technique is to calibrate the model at some initial operating conditions and, then, use this model to search for an optimal solution. Since the identification and optimization objectives are solved independently, when there is a mismatch between the process and the model, the parameter estimates cannot satisfy these two objectives simultaneously. To this end, in the proposed methodology, corrections are added to the model in such a way that the updated parameter estimates reduce the conflict between the identification and optimization objectives. Unlike the standard estimation technique that minimizes only the prediction error at a given set of operating conditions, the proposed algorithm also includes the differences between the predicted and measured gradients of the optimization objective and/or constraints in the estimation. In the initial version of the algorithm, the proposed correction is based on the linearization of model outputs. Then, in the second part, the correction is extended by using a quadratic approximation of the model, which, for the given case study, resulted in much faster convergence as compared to the earlier version. Finally, the methodologies mentioned above were combined to formulate a robust iterative optimization strategy that converges to the true process optimum with minimum variability in the search path. One of the major findings of this thesis is that the robust optimal solutions based on the Bayesian parametric uncertainty are much less conservative than their counterparts based on normally distributed parameters.
Book Synopsis Robust Design Methodology for Reliability by : Bo Bergman
Download or read book Robust Design Methodology for Reliability written by Bo Bergman and published by John Wiley & Sons. This book was released on 2009-08-18 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on deep theoretical as well as practical experience in Reliability and Quality Sciences, Robust Design Methodology for Reliability constructively addresses practical reliability problems. It offers a comprehensive design theory for reliability, utilizing robust design methodology and six sigma frameworks. In particular, the relation between un-reliability and variation and uncertainty is explored and reliability improvement measures in early product development stages are suggested. Many companies today utilise design for Six Sigma (DfSS) for strategic improvement of the design process, but often without explicitly describing the reliability perspective; this book explains how reliability design can relate to and work with DfSS and illustrates this with real–world problems. The contributors advocate designing for robustness, i.e. insensitivity to variation in the early stages of product design development. Methods for rational treatment of uncertainties in model assumptions are also presented. This book promotes a new approach to reliability thinking that addresses the design process and proneness to failure in the design phase via sensitivity to variation and uncertainty; includes contributions from both academics and industry practitioners with a broad scope of expertise, including quality science, mathematical statistics and reliability engineering; takes the innovative approach of promoting the study of variation and uncertainty as a basis for reliability work; includes case studies and illustrative examples that translate the theory into practice. Robust Design Methodology for Reliability provides a starting point for new thinking in practical reliability improvement work that will appeal to advanced designers and reliability specialists in academia and industry including fatigue engineers, product development and process/ quality professionals, especially those interested in and/ or using the DfSS framework.
Book Synopsis Frontiers in Chemical Engineering by : National Research Council
Download or read book Frontiers in Chemical Engineering written by National Research Council and published by National Academies Press. This book was released on 1988-02-01 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the next 10 to 15 years, chemical engineers have the potential to affect every aspect of American life and promote the scientific and industrial leadership of the United States. Frontiers in Chemical Engineering explores the opportunities available and gives a blueprint for turning a multitude of promising visions into realities. It also examines the likely changes in how chemical engineers will be educated and take their place in the profession, and presents new research opportunities.
Author :Institute for Operations Research and the Management Sciences. National Meeting Publisher :INFORMS ISBN 13 :1877640239 Total Pages :349 pages Book Rating :4.8/5 (776 download)
Book Synopsis Tutorials in Operations Research by : Institute for Operations Research and the Management Sciences. National Meeting
Download or read book Tutorials in Operations Research written by Institute for Operations Research and the Management Sciences. National Meeting and published by INFORMS. This book was released on 2008 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Data Mining written by and published by BoD – Books on Demand. This book was released on 2022-03-30 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability of big data due to computerization and automation has generated an urgent need for new techniques to analyze and convert big data into useful information and knowledge. Data mining is a promising and leading-edge technology for mining large volumes of data, looking for hidden information, and aiding knowledge discovery. It can be used for characterization, classification, discrimination, anomaly detection, association, clustering, trend or evolution prediction, and much more in fields such as science, medicine, economics, engineering, computers, and even business analytics. This book presents basic concepts, ideas, and research in data mining.
Book Synopsis 28th European Symposium on Computer Aided Process Engineering by : Stefan Radl
Download or read book 28th European Symposium on Computer Aided Process Engineering written by Stefan Radl and published by Elsevier. This book was released on 2018-06-26 with total page 1766 pages. Available in PDF, EPUB and Kindle. Book excerpt: 28th European Symposium on Computer Aided Process Engineering, Volume 43 contains the papers presented at the 28th European Society of Computer-Aided Process Engineering (ESCAPE) event held in Graz, Austria June 10-13 , 2018. It is a valuable resource for chemical engineers, chemical process engineers, researchers in industry and academia, students, and consultants for chemical industries. Presents findings and discussions from the 28th European Society of Computer-Aided Process Engineering (ESCAPE) event
