Download or read book Synthesis and Optimization of Reactor Networks and Reactor Separator Recycle Systems written by Antonis Constantinos Kokossis and published by . This book was released on 1992 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Nonisothermal Chemical Reactor Networks and Reactor Separator Recycle Systems written by C. A. Schweiger and published by . This book was released on 1997 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Chemical Reactor Networks written by Diane Hildebrandt and published by . This book was released on 1995 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "An interesting problem in chemical reactor theory is finding bounds or targets on a given performance index in a reacting system. Moreover, performance of the reactor subsystem has a key impact on the design of other processing subsystems. It determines the recycle structure of the process, the separation sequence and has a strong influence on the energy and environmental considerations. However, this area of process synthesis has seen relatively little development when compared to heat integration and separation synthesis. As with the design of heat exchanger networks, this approach has evolved into the (discrete and continuous) optimization of network superstructures as well as the performance targeting of the optimal network prior to its construction. In this study we review both methods for reactor network synthesis but concentrate on advances with the latter approach. The targeting approach is based on geometric interpretations of reaction and mixing. It uses a constructive approach to find the attainable region; that is, it effectively captures all possible reactor structures and finds the bounds on the performance of a reacting system. The approach also generates reactor structures which are candidates for the optimal system. It is however severely limited by the dimensionality of the problem and in practice only 2 and 3 dimensional problems have been solved. Nevertheless, insights gained from this geometric approach have led to an understanding of more general properties of optimal reactor structures. In particular the reactors that make up optimal structures are parallel -- series systems of plug flow reactors, CSTR's and differential side stream reactors. Furthermore, the number of parallel structures is related to the dimensionality of the problem. In addition, these properties can be embedded within optimization formulations in order to deal with more complex problems. In particular, we describe several formulations that incorporate simpler properties derived from attainable region concepts. At this point, this approach is not as rigorous as the geometric approach but readily extendable to more complex reaction systems. In addition, it can be integrated with other process subsystems and allows for simultaneous approaches for heat integration, separation structures and reactor network design. In this way, trade-offs resulting from different parts of the process are properly taken into account in the optimization. All of these concepts will be illustrated with numerous examples. Finally, future work will concentrate on the extension of geometric concepts to more general reactor systems as well as to separation systems. These will also lead to more compact optimization formulations and the consideration of larger and more complex process problems."
Download or read book Nonlinear and Mixed Integer Optimization written by Christodoulos A. Floudas and published by Oxford University Press on Demand. This book was released on 1995-10-05 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a void in chemical engineering and optimization literature, this book presents the theory and methods for nonlinear and mixed-integer optimization, and their applications in the important area of process synthesis. Other topics include modeling issues in process synthesis, and optimization-based approaches in the synthesis of heat recovery systems, distillation-based systems, and reactor-based systems. The basics of convex analysis and nonlinear optimization are also covered and the elementary concepts of mixed-integer linear optimization are introduced. All chapters have several illustrations and geometrical interpretations of the material as well as suggested problems. Nonlinear and Mixed-Integer Optimization will prove to be an invaluable source--either as a textbook or a reference--for researchers and graduate students interested in continuous and discrete nonlinear optimization issues in engineering design, process synthesis, process operations, applied mathematics, operations research, industrial management, and systems engineering.
Download or read book Optimization Methods for Reactor Network Synthesis written by Arthur Eduardo Pastore de Lima (Ph.D.) and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We develop optimization-based approaches for reactor network synthesis suitable for simultaneous process synthesis. We propose reactor network models that consider additional degrees of freedom in terms of the number and composition of inlet and outlet streams, and candidate sets of reactions that can be (de)activated in different reactors. These features provide flexibility to the models, allowing a rich connectivity of the reactor network with other subsystems (e.g., separation and heat exchanger networks) and the formulation of new problems for reactor network synthesis during the early stages of chemical process design. Accordingly, we propose a generalized superstructure-based framework for reactor network synthesis that allows seamless coupling with approaches for separation network synthesis. The candidate reactions are modeled through tasks assigned to reactors. We develop a graph theoretic approach to systematically build the reactor network superstructure. First, we represent the reactions and tasks through multiple graphs and identify competition among tasks with similar roles. Second, we propose integer optimization models based on task competition to determine the number of candidate reactors and interconnecting streams required in the superstructure. Finally, we formulate and solve the optimization model for the integrated synthesis problem. Furthermore, we propose modeling methods that allow us to account for costs in attainable region-based approaches for reactor-separation network synthesis. This approach allows us to determine the bounds of productivity (targets) of a desired component achievable by any reactor-separation network, for a given reaction system and feed stream. We holistically analyze cost trade-offs within the attainable region as well as provide a method to obtain practical targets to be used as benchmarks. We accurately identify the attainable region using the continuous stirred tank reactor (CSTR) equivalence principle and introduce separation models accounting for costs to perform the required separation tasks. Finally, we show how some subregions, typically close to the attainable region boundary, are expensive to achieve.
Download or read book Chemical Reactor Network Targeting and Integration written by Subash Balakrishna and published by . This book was released on 1995 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "While synthesis strategies are well developed for energy integration and separation systems, relatively little work has been done in synthesizing reactor networks. This is due to the complex and nonlinear behavior of the reacting system, coupled with combinatorial aspects that are inherent in all synthesis problems. This paper provides a brief summary of work to date in this area and focuses on targeting approaches for reactor network synthesis. As with energy integration, reactor network targeting seeks to describe the performance of the network without its explicit construction. Once obtained, a network is then determined that is guaranteed to match this target. To achieve these properties, we rely on recent concepts of attainable regions and we extend these to simple optimization formulations. With these formulations network targets can be achieved for isothermal and nonisothermal systems with complex kinetics. Moreover, these optimization formulations can easily be coupled to other process systems such as heat integration and separation sequence. As a result, they provide a framework for integrated process design. This strategy is illustrated with detailed examples. Finally, limitations of the current approach are summarized and topics for future work are outlined."
Download or read book Advances in Non volatile Memory and Storage Technology written by Yoshio Nishi and published by Elsevier. This book was released on 2014-06-24 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: New solutions are needed for future scaling down of nonvolatile memory. Advances in Non-volatile Memory and Storage Technology provides an overview of developing technologies and explores their strengths and weaknesses. After an overview of the current market, part one introduces improvements in flash technologies, including developments in 3D NAND flash technologies and flash memory for ultra-high density storage devices. Part two looks at the advantages of designing phase change memory and resistive random access memory technologies. It looks in particular at the fabrication, properties, and performance of nanowire phase change memory technologies. Later chapters also consider modeling of both metal oxide and resistive random access memory switching mechanisms, as well as conductive bridge random access memory technologies. Finally, part three looks to the future of alternative technologies. The areas covered include molecular, polymer, and hybrid organic memory devices, and a variety of random access memory devices such as nano-electromechanical, ferroelectric, and spin-transfer-torque magnetoresistive devices. Advances in Non-volatile Memory and Storage Technology is a key resource for postgraduate students and academic researchers in physics, materials science, and electrical engineering. It is a valuable tool for research and development managers concerned with electronics, semiconductors, nanotechnology, solid-state memories, magnetic materials, organic materials, and portable electronic devices. - Provides an overview of developing nonvolatile memory and storage technologies and explores their strengths and weaknesses - Examines improvements to flash technology, charge trapping, and resistive random access memory - Discusses emerging devices such as those based on polymer and molecular electronics, and nanoelectromechanical random access memory (RAM)
Download or read book Proceedings of the 1st Annual Gas Processing Symposium written by Hassan E. Alfadala and published by Elsevier. This book was released on 2008-11-26 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the cleanest source of fossil energy with the most advantageous CO2 footprint, natural gas continues to increase its share in the global energy market. This book provides state-of-the-art contributions in the area of gas processing. Special emphasis is given to Liquified Natural Gas (LNG); the book also covers the following gas processing applications in parallel sessions:* Natural Gas processing and treatment * Gas To Power and water* Gas To Liquid (GTL)* Gas To Petrochemicals, including olefins, ammonia and methanol* Provides a state-of-the-art review of gas processing technologies* Covers design, operating tools, and methodologies* Includes case studies and practical applications
Download or read book Synthesis Design and Resource Optimization in Batch Chemical Plants written by Thokozani Majozi and published by CRC Press. This book was released on 2015-03-04 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The manner in which time is captured forms the foundation for synthesis, design, and optimization in batch chemical plants. However, there are still serious challenges with handling time in batch plants. Most techniques tend to assume either a fixed time dimension or adopt time average models to tame the time dimension, thereby simplifying the resu
Download or read book Encyclopedia of Optimization written by Christodoulos A. Floudas and published by Springer Science & Business Media. This book was released on 2008-09-04 with total page 4646 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the Encyclopedia of Optimization is to introduce the reader to a complete set of topics that show the spectrum of research, the richness of ideas, and the breadth of applications that has come from this field. The second edition builds on the success of the former edition with more than 150 completely new entries, designed to ensure that the reference addresses recent areas where optimization theories and techniques have advanced. Particularly heavy attention resulted in health science and transportation, with entries such as "Algorithms for Genomics", "Optimization and Radiotherapy Treatment Design", and "Crew Scheduling".
Download or read book Synthesis of Optimal Chemical Reactor Networks written by Ajay Lakshmanan and published by . This book was released on 1996 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "The reactor is the most influential unit operation in many chemical processes. Reaction systems and reactor design often determine the character of the flowsheet. However, research in reactor network synthesis has met with limited success because of nonlinear reaction models, uncertain rate laws, and numerous possible reactor types and networks. In this paper we take advantage of attainable region properties derived from geometric targeting techniques to design a concise reactor modules [sic] for reactor network synthesis. The reactor module is made up of a continuous stirred tank reactor (CSTR) and a plug flow reactor (PFR) (for two dimensional targeting) or a differential sidestream reactors (DSR) (for higher dimensions). These modules are used to synthesize the optimal reactor network target with respect to a specific objective function and the problem is formulated as a compact MINLP. This new algorithm overcomes many of the drawbacks of existing algorithms. Finally, we solve several example problems to illustrate the feasibility of the proposed algorithm and discuss applications to simultaneous reactor network and process synthesis."
Download or read book Re Engineering the Chemical Processing Plant written by Andrzej Stankiewicz and published by CRC Press. This book was released on 2018-12-14 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first guide to compile current research and frontline developments in the science of process intensification (PI), Re-Engineering the Chemical Processing Plant illustrates the design, integration, and application of PI principles and structures for the development and optimization of chemical and industrial plants. This volume updates professionals on emerging PI equipment and methodologies to promote technological advances and operational efficacy in chemical, biochemical, and engineering environments and presents clear examples illustrating the implementation and application of specific process-intensifying equipment and methods in various commercial arenas.
Download or read book Systematic Methods of Chemical Process Design written by Lorenz T. Biegler and published by Prentice Hall. This book was released on 1997 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last 20 years, fundamental design concepts and advanced computer modeling have revolutionized process design for chemical engineering. Team work and creative problem solving are still the building blocks of successful design, but new design concepts and novel mathematical programming models based on computer-based tools have taken out much of the guess-work. This book presents the new revolutionary knowledge, taking a systematic approach to design at all levels.
Download or read book Exergy Energy System Analysis and Optimization Volume II written by Christos A. Frangopoulos and published by EOLSS Publications. This book was released on 2009-05-13 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exergy, Energy System Analysis, and Optimization theme is a component of the Encyclopedia of Energy Sciences, Engineering and Technology Resources which is part of the global Encyclopedia of Life Support Systems (EOLSS), an integrated compendium of twenty one Encyclopedias. These three volumes are organized into five different topics which represent the main scientific areas of the theme: 1. Exergy and Thermodynamic Analysis; 2. Thermoeconomic Analysis; 3. Modeling, Simulation and Optimization in Energy Systems; 4. Artificial Intelligence and Expert Systems in Energy Systems Analysis; 5. Sustainability Considerations in the Modeling of Energy Systems. Fundamentals and applications of characteristic methods are presented in these volumes. These three volumes are aimed at the following five major target audiences: University and College Students, Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers and NGOs.
Download or read book Reactor Network Targeting for Waste Minimization written by Ajay Lakshmanan and published by . This book was released on 1994 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "While process synthesis has matured in the areas of heat exchanger and separation synthesis, reactor network synthesis still remains a challenging problem. Advances in this area have been due to recent developments in methods for superstructure optimization as well as powerful concepts for reactor network targeting before a network is actually developed. In this paper we apply the latter approach to the synthesis of waste minimizing process flowsheets. This area has attracted much interest in the past five years, especially since waste minimization at the source is the most effective way to develop clean and efficient processes. Moreover, the characteristics of these flowsheets are primarily influenced by the reactor network. This study deals with targeting concepts introduced by Horn (1964), developed by Glasser, Hildebrandt and Crowe (1987) and adapted to an optimization framework by Balakrishna and Biegler (1992). Also, we apply concepts of waste minimization and multicriterion optimization, to incorporate the tradeoffs of minimum waste and maximum profit. This approach will be demonstrated on the Williams Otto and Van de Vusse flowsheets, where the potential for developing profitable waste minimizing processes will be shown. Moreover, we demonstrate the ability of the targeting procedure to integrate the energy and separation subsystems as well. This further increases the potential for process improvement."
Download or read book Optimization Based Approaches to Chemical Reactor Network Synthesis written by Luke Ekem Kweku Achenie and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Reactor Network Synthesis Using Stochastic Optimization Methods written by E. C. Marcoulaki and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
