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Modelling And Advanced Control For Polyethylene Production In A Fluidized Bed Catalytic Reactor
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Book Synopsis Modelling and Advanced Control for Polyethylene Production in a Fluidized-bed Catalytic Reactor by : Ahmmed S Ibrehem
Download or read book Modelling and Advanced Control for Polyethylene Production in a Fluidized-bed Catalytic Reactor written by Ahmmed S Ibrehem and published by . This book was released on 2011 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis MODELLING AND ADVANCED CONTROL FOR POLYETHYLENE PRODUCTION by : Ahmmed Saadi Ibrahem
Download or read book MODELLING AND ADVANCED CONTROL FOR POLYETHYLENE PRODUCTION written by Ahmmed Saadi Ibrahem and published by LAP Lambert Academic Publishing. This book was released on 2010-11-16 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: A modified model for the gas-phase polymerization of polyethylene in fluidized-bed catalyst reactors (FBR) using Ziegler-Natta catalyst is presented in this study. This mathematical model accounts for mass and heat transfer between the bubbles and the clouds without chemical reaction, between the clouds and the emulsion without chemical reaction, and between emulsion and solid with chemical reaction that occurs at the surface of the catalyst particles. The model also, accounts for the effect of catalyst particles type for the rate of adsorption, desorption and catalyst surface reaction on the site of reaction. In this work, the concentration and temperature profiles in the bubble, cloud and emulsion phases are calculated. The effect of important reactor parameters such as superficial gas velocity, catalyst injection rate, catalyst particle growth and minimum fluidization velocity on the dynamic behavior of the FBR is investigated.
Book Synopsis Model Predictive Control Application to a Fluidized Bed Reactor Used for Polyethylene Production by : Alejandro Veiga Rúa
Download or read book Model Predictive Control Application to a Fluidized Bed Reactor Used for Polyethylene Production written by Alejandro Veiga Rúa and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling, Simulation and Control of a Fluidized Bed Reactor for the Gas Phase Polymerization of Olefins by : Bodo Lagemann
Download or read book Modelling, Simulation and Control of a Fluidized Bed Reactor for the Gas Phase Polymerization of Olefins written by Bodo Lagemann and published by . This book was released on 1989 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluidized-Bed Reactors: Processes and Operating Conditions by : John G. Yates
Download or read book Fluidized-Bed Reactors: Processes and Operating Conditions written by John G. Yates and published by Springer. This book was released on 2016-09-27 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fluidized-bed reactor is the centerpiece of industrial fluidization processes. This book focuses on the design and operation of fluidized beds in many different industrial processes, emphasizing the rationale for choosing fluidized beds for each particular process. The book starts with a brief history of fluidization from its inception in the 1940’s. The authors present both the fluid dynamics of gas-solid fluidized beds and the extensive experimental studies of operating systems and they set them in the context of operating processes that use fluid-bed reactors. Chemical engineering students and postdocs as well as practicing engineers will find great interest in this book.
Book Synopsis Mathematical Modeling of a Gas-phase Fluidized Bed Reactor for Production of Polyethylene Using Ziegler-Natta Catalysis by : Farzaneh Rafi
Download or read book Mathematical Modeling of a Gas-phase Fluidized Bed Reactor for Production of Polyethylene Using Ziegler-Natta Catalysis written by Farzaneh Rafi and published by . This book was released on 1986 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling and Simulation of Catalytic Reactors for Petroleum Refining by : Jorge Ancheyta
Download or read book Modeling and Simulation of Catalytic Reactors for Petroleum Refining written by Jorge Ancheyta and published by John Wiley & Sons. This book was released on 2011-04-20 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling and Simulation of Catalytic Reactors for Petroleum Refining deals with fundamental descriptions of the main conversion processes employed in the petroleum refining industry: catalytic hydrotreating, catalytic reforming, and fluid catalytic cracking. Common approaches for modeling of catalytic reactors for steady-state and dynamic simulations are also described and analyzed. Aspects such as thermodynamics, reaction kinetics, process variables, process scheme, and reactor design are discussed in detail from both research and commercial points of view. Results of simulation with the developed models are compared with those determined at pilot plant scale as well as commercial practice. Kinetics data used in the reactor model are either taken from the literature or obtained under controlled experiments at the laboratory.
Book Synopsis Modeling of a fluidized bed reactor for ethylene polymerization by : J. Mazák
Download or read book Modeling of a fluidized bed reactor for ethylene polymerization written by J. Mazák and published by . This book was released on 1996 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Reaction Kinetics, Modelling and Control of Solid Catalyzed Gas Phase Olefin Polymerization Reactors by : Kyu-Yong Choi
Download or read book The Reaction Kinetics, Modelling and Control of Solid Catalyzed Gas Phase Olefin Polymerization Reactors written by Kyu-Yong Choi and published by . This book was released on 1984 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gas Fluidization written by M. Pell and published by Elsevier. This book was released on 2012-12-02 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a much-needed fluidization handbook for practising engineers. There are few plants which do not have a fluid bed process operating somewhere on the site, yet engineers rarely have any formal training in the subject. College courses often emphasize academic issues rather than industrial needs, and a study of the literature reveals an overwhelming abundance of correlations and experimental data.As this is a practical book, the author has minimized theoretical development of fundamental equations in favor of giving correlations which have been developed for large scale equipment. In some cases, where several correlations might apply, the author has chosen one or two which work best according to his own experience. Design procedures are described which should assist the designer and the operator of fluid beds to improve his process and to avoid some often-encountered pitfalls. The material will also be useful as a supplementary text to a course on fluidization, the emphasis on commercial design being a stimulating counterpoint to a strongly academic viewpoint.
Book Synopsis Dynamic Modelling and Control of Gas-phase Ethylene Polymerisation in Fluidised Bed Reactor by : R. T. H. Maessen
Download or read book Dynamic Modelling and Control of Gas-phase Ethylene Polymerisation in Fluidised Bed Reactor written by R. T. H. Maessen and published by . This book was released on 1999 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design, Construction, Modeling, Identification and Multivariable Constraint Control of a Pilot Plant Fluidized Bed Catalytic Reactor by : Jeffrey D. Kelly
Download or read book Design, Construction, Modeling, Identification and Multivariable Constraint Control of a Pilot Plant Fluidized Bed Catalytic Reactor written by Jeffrey D. Kelly and published by . This book was released on 1991 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Reactor Modeling by : Hugo A. Jakobsen
Download or read book Chemical Reactor Modeling written by Hugo A. Jakobsen and published by Springer Science & Business Media. This book was released on 2014-04-02 with total page 1589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Reactor Modeling closes the gap between Chemical Reaction Engineering and Fluid Mechanics. The second edition consists of two volumes: Volume 1: Fundamentals. Volume 2: Chemical Engineering Applications In volume 1 most of the fundamental theory is presented. A few numerical model simulation application examples are given to elucidate the link between theory and applications. In volume 2 the chemical reactor equipment to be modeled are described. Several engineering models are introduced and discussed. A survey of the frequently used numerical methods, algorithms and schemes is provided. A few practical engineering applications of the modeling tools are presented and discussed. The working principles of several experimental techniques employed in order to get data for model validation are outlined. The monograph is based on lectures regularly taught in the fourth and fifth years graduate courses in transport phenomena and chemical reactor modeling and in a post graduate course in modern reactor modeling at the Norwegian University of Science and Technology, Department of Chemical Engineering, Trondheim, Norway. The objective of the book is to present the fundamentals of the single-fluid and multi-fluid models for the analysis of single and multiphase reactive flows in chemical reactors with a chemical reactor engineering rather than mathematical bias. Organized into 13 chapters, it combines theoretical aspects and practical applications and covers some of the recent research in several areas of chemical reactor engineering. This book contains a survey of the modern literature in the field of chemical reactor modeling.
Book Synopsis Multiscale Modeling of Fluidized Bed Reactor for Production of Polysilicon by : Soham Dutta
Download or read book Multiscale Modeling of Fluidized Bed Reactor for Production of Polysilicon written by Soham Dutta and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Process Engineering Control by : Paul Serban Agachi
Download or read book Advanced Process Engineering Control written by Paul Serban Agachi and published by Walter de Gruyter GmbH & Co KG. This book was released on 2023-11-20 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a mature topic in chemical engineering, the book provides methods, problems and tools used in process control engineering. It discusses: process knowledge, sensor system technology, actuators, communication technology, and logistics, design and construction of control systems and their operation. The knowledge goes beyond the traditional process engineering field by applying the same principles, to biomedical processes, energy production and management of environmental issues. The book explains all the determinations in the "chemical systems" or "process systems", starting from the beginning of the processes, going through the intricate interdependency of the process stages, analyzing the hardware components of a control system and ending with the design of an appropriate control system for a process parameter or a whole process. The book is first addressed to the students and graduates of the departments of Chemical or Process Engineering. Second, to the chemical or process engineers in all industries or research and development centers, because they will notice the resemblance in approach from the system and control point of view, between different fields which might seem far from each other, but share the same control philosophy.
Book Synopsis Modeling and Control of a Multizone Circulating Reactor for Polyethylene Production by : Ang Wee Lee
Download or read book Modeling and Control of a Multizone Circulating Reactor for Polyethylene Production written by Ang Wee Lee and published by . This book was released on 2007 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Model Based Approach for the Plant-wide Economic Control of Fluid Catalytic Cracking Unit by : Redah Mousa Alsabei
Download or read book Model Based Approach for the Plant-wide Economic Control of Fluid Catalytic Cracking Unit written by Redah Mousa Alsabei and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid catalytic cracking (FCC) is one of the most important processes in the petroleum refining industry for the conversion of heavy gasoil to gasoline and diesel. Furthermore, valuable gases such as ethylene, propylene and isobutylene are produced. The performance of the FCC units plays a major role on the overall economics of refinery plants. Any improvement in operation or control of FCC units will result in dramatic economic benefits. Present studies are concerned with the general behaviour of the industrial FCC plant, and have dealt with the modelling of the FCC units, which are very useful in elucidating the main characteristics of these systems for better design, operation, and control. Traditional control theory is no longer suitable for the increasingly sophisticated operating conditions and product specifications of the FCC unit. Due to the large economic benefits, these trends make the process control more challenging. There is now strong demand for advanced control strategies with higher quality to meet the challenges imposed by the growing technological and market competition. According to these highlights, the thesis objectives were to develop a new mathematical model for the FCC process, which was used to study the dynamic behaviour of the process and to demonstrate the benefits of the advanced control (particularly Model Predictive Control based on the nonlinear process model) for the FCC unit. The model describes the seven main sections of the entire FCC unit: (1) the feed and preheating system, (2) reactor, (3) regenerator, (4) air blower, (5) wet gas compressor, (6) catalyst circulation lines and (7) main fractionators. The novelty of the developed model consists in that besides the complex dynamics of the reactorregenerator system, it includes the dynamic model of the fractionator, as well as a new five lump kinetic model for the riser, which incorporates the temperature effect on the reaction kinetics; hence, it is able to predict the final production rate of the main products (gasoline and diesel), and can be used to analyze the effect of changing process conditions on the product distribution. The FCC unit model has been developed incorporating the temperature effect on reactor kinetics reference construction and operation data from an industrial unit. The resulting global model of the FCC unit is described by a complex system of partial-differential-equations, which was solved by discretising the kinetic models in the riser and regenerator on a fixed grid along the height of the units, using finite differences. The resulting model is a high order DAE, with 942 ODEs (142 from material and energy balances and 800 resulting from the discretisation of the kinetic models). The model offers the possibility of investigating the way that advanced control strategies can be implemented, while also ensuring that the operation of the unit is environmentally safe. All the investigated disturbances showed considerable influence on the products composition. Taking into account the very high volume production of an industrial FCC unit, these disturbances can have a significant economic impact. The fresh feed coke formation factor is one of the most important disturbances analysed. It shows significant effect on the process variables. The objective regarding the control of the unit has to consider not only to improve productivity by increasing the reaction temperature, but also to assure that the operation of the unit is environmentally safe, by keeping the concentration of CO in the stack gas below a certain limit. The model was used to investigate different control input-output pairing using classical controllability analysis based on relative gain array (RGA). Several multi-loop control schemes were first investigated by implementing advanced PID control using anti-windup. A tuning approach for the simultaneous tuning of multiple interacting PID controllers was proposed using a genetic algorithm based nonlinear optimisation approach. Linear model predictive control (LMPC) was investigated as a potential multi-variate control scheme applicable for the FCCU, using classical square as well as novel non-square control structures. The analysis of the LMPC control performance highlighted that although the multivariate nature of the MPC approach using manipulated and controlled outputs which satisfy controllability criteria based on RGA analysis can enhance the control performance, by decreasing the coupling between the individual low level control loops operated by the higher level MPC. However the limitations of using the linear model in the MPC scheme were also highlighted and hence a nonlinear model based predictive control scheme was developed and evaluated.
