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Phase Equilibrium Engineering

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Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Alberto Brignole,Selva Pereda
Publisher : Newnes
Release : 2013-04-02
ISBN : 044459471X
Language : En, Es, Fr & De

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Book Description :

Traditionally, the teaching of phase equilibria emphasizes the relationships between the thermodynamic variables of each phase in equilibrium rather than its engineering applications. This book changes the focus from the use of thermodynamics relationships to compute phase equilibria to the design and control of the phase conditions that a process needs. Phase Equilibrium Engineering presents a systematic study and application of phase equilibrium tools to the development of chemical processes. The thermodynamic modeling of mixtures for process development, synthesis, simulation, design and optimization is analyzed. The relation between the mixture molecular properties, the selection of the thermodynamic model and the process technology that could be applied are discussed. A classification of mixtures, separation process, thermodynamic models and technologies is presented to guide the engineer in the world of separation processes. The phase condition required for a given reacting system is studied at subcritical and supercritical conditions. The four cardinal points of phase equilibrium engineering are: the chemical plant or process, the laboratory, the modeling of phase equilibria and the simulator. The harmonization of all these components to obtain a better design or operation is the ultimate goal of phase equilibrium engineering. Methodologies are discussed using relevant industrial examples The molecular nature and composition of the process mixture is given a key role in process decisions Phase equilibrium diagrams are used as a drawing board for process implementation

Phase Equilibria in Chemical Engineering

Phase Equilibria in Chemical Engineering Book
Author : Stanley M. Walas
Publisher : Butterworth-Heinemann
Release : 2013-10-22
ISBN : 1483145085
Language : En, Es, Fr & De

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Book Description :

Phase Equilibria in Chemical Engineering is devoted to the thermodynamic basis and practical aspects of the calculation of equilibrium conditions of multiple phases that are pertinent to chemical engineering processes. Efforts have been made throughout the book to provide guidance to adequate theory and practice. The book begins with a long chapter on equations of state, since it is intimately bound up with the development of thermodynamics. Following material on basic thermodynamics and nonidealities in terms of fugacities and activities, individual chapters are devoted to equilibria primarily between pairs of phases. A few topics that do not fit into these categories and for which the state of the art is not yet developed quantitatively have been relegated to a separate chapter. The chapter on chemical equilibria is pertinent since many processes involve simultaneous chemical and phase equilibria. Also included are chapters on the evaluation of enthalpy and entropy changes of nonideal substances and mixtures, and on experimental methods. This book is intended as a reference and self-study as well as a textbook either for full courses in phase equilibria or as a supplement to related courses in the chemical engineering curriculum. Practicing engineers concerned with separation technology and process design also may find the book useful.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082550
Language : En, Es, Fr & De

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Book Description :

This volume on phase equilibrium engineering (PEE) aims to fill the gap between the books on reactors and separation process design and the textbooks on chemical engineering thermodynamics. The goal is to change the focus from the use of thermodynamic relationships to compute phase equilibria to the design and control of the phase conditions that a process needs. In this way, phase equilibrium thermodynamics is put to work. The main goal of PEE is the design of the system conditions to achieve the desired phase equilibrium scenario that the process at hand requires. In this chapter, the philosophy of phase equilibrium thermodynamic modeling is discussed in the context of process development and chemical plant operation. Typical phase scenarios that are encountered in separation, materials, and chemical process are presented as well as the problem of phase design and the PEE tools.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082658
Language : En, Es, Fr & De

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Book Description :

The benefits of using SCF as reaction media have promoted an intense research and development activity in this field. In this chapter, several case studies demonstrate the advantages of working under supercritical conditions. In particular, gas–liquid catalyzed reactions are one of the areas where the use of supercritical fluids is very attractive. In general, these reactions are diffusion-controlled and the use of supercritical fluids increases the reaction rate by eliminating the gas–liquid interface. In this chapter also, the interesting properties of operation under near-critical conditions are analyzed: higher solubility of reactants and products in the supercritical phase, reduced deposition of reacting components on the catalyst pores, diffusion coefficients higher than in liquids, independent control of the concentration of permanent gases like H2, O2, or CO in the reaction mixture, higher thermal capacity, and low interfacial tension The hydrogenation of low volatile liquids, using solid–fluid heterogeneous catalysts, is presented to show the advantages of working under supercritical conditions. In this case study, the selection of the process conditions that guarantees operation under a supercritical single-phase state is discussed as a typical phase equilibrium engineering problem. Finally, for reactions in which the SCF plays a role not only as solvent but also as a reactant, the problem of phase condition design and cosolvent selection is addressed.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082615
Language : En, Es, Fr & De

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Book Description :

This chapter starts with the analysis of the distillation path of binary mixtures on the general phase behavior P–T diagram of binary mixtures. The univariant lines of these diagrams limit the region of vapor–liquid equilibria where binary distillation can be applied. On this basis, the conditions under which distillation is possible for types I, II, IV, and V of binary mixtures are discussed. Furthermore, in this chapter, the principles of fractional distillation, as well as the computational procedures, are discussed. The thermodynamic modeling of a train of distillation columns to separate the components of an ethane-cracked gas mixture is used to develop a strategy for an equation of state parameter tuning. This strategy is based on the analysis of the distillation column phase equilibrium sensitivity and leads to an unique matrix of equation of state dominant binary parameters for the whole fractionation train. The chapter ends with a list of phase equilibrium engineering guidelines to make a realistic design/simulation of distillation columns.

Thermodynamics of Phase Equilibria in Food Engineering

Thermodynamics of Phase Equilibria in Food Engineering Book
Author : Camila Gambini Pereira
Publisher : Academic Press
Release : 2018-10-17
ISBN : 0128115572
Language : En, Es, Fr & De

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Book Description :

Thermodynamics of Phase Equilibria in Food Engineering is the definitive book on thermodynamics of equilibrium applied to food engineering. Food is a complex matrix consisting of different groups of compounds divided into macronutrients (lipids, carbohydrates, and proteins), and micronutrients (vitamins, minerals, and phytochemicals). The quality characteristics of food products associated with the sensorial, physical and microbiological attributes are directly related to the thermodynamic properties of specific compounds and complexes that are formed during processing or by the action of diverse interventions, such as the environment, biochemical reactions, and others. In addition, in obtaining bioactive substances using separation processes, the knowledge of phase equilibria of food systems is essential to provide an efficient separation, with a low cost in the process and high selectivity in the recovery of the desired component. This book combines theory and application of phase equilibria data of systems containing food compounds to help food engineers and researchers to solve complex problems found in food processing. It provides support to researchers from academia and industry to better understand the behavior of food materials in the face of processing effects, and to develop ways to improve the quality of the food products. Presents the fundamentals of phase equilibria in the food industry Describes both classic and advanced models, including cubic equations of state and activity coefficient Encompasses distillation, solid-liquid extraction, liquid-liquid extraction, adsorption, crystallization and supercritical fluid extraction Explores equilibrium in advanced systems, including colloidal, electrolyte and protein systems

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Martín Cismondi,Marcelo S. Zabaloy
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082593
Language : En, Es, Fr & De

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Book Description :

This chapter illustrates the wide variety of binary fluid phase equilibrium diagrams that can be obtained using models based on equations of state (EOS). It also highlights the need for paying attention to the predicted binary key lines, such as the critical and the liquid–liquid–vapor equilibrium lines, when fitting binary interaction parameters of an EOS model. In addition, efficient algorithms for the EOS-based automated computation of complete Univariant Lines Phase Equilibrium Diagrams and of complete restricted binary phase equilibrium diagrams, such as isoplethic, isothermal, or isobaric diagrams, are described.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082585
Language : En, Es, Fr & De

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Book Description :

In previous chapters, we have seen the fundamental criteria for phase equilibria and how the phenomenological phase behavior and separation technology of real mixtures are determined by their constituent molecular interactions. Our purpose in this chapter is to present the properties of fluids and the models for the prediction of thermodynamic properties and phase equilibria. These models are classified as predictive models using only pure component properties and semiempirical models based on a molecular thermodynamic approach. Finally, the chapter highlights the importance of the class of mixture and molecular interactions of its components in the selection of thermodynamic models for phase equilibrium calculations.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082666
Language : En, Es, Fr & De

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Book Description :

The application of the principles of phase equilibrium engineering to the development of two innovative technologies for the production of biofuels is discussed in this chapter. The first technology is the production of biodiesel by transesterification of vegetable oils with supercritical methanol; the second, the extraction and dehydration of alcohols by near-critical dual effect solvents that exhibit good solvent power to extract alcohols and water entrainment effect to dehydrate the extracted alcohol. In the first case, the complexity of the reacting system, the large size asymmetry, and strong molecular interactions of the mixture components: methanol, vegetable oils, fatty esters, and glycerin precluded the design and analysis of the process conditions based on thermodynamic model predictions. Therefore, in this case, a systematic approach based on experimental studies was used to unveil the phase scenario and the physical properties required for the design and optimization of this technology. The conceptual design of extraction and dehydration of alcohols by near-critical solvents followed a different path. The process development was initially based on very limited experimental information. In this case, an equation of state for highly nonideal systems was the main tool for exploration of the process conditions over a wide range of pressures, temperatures, and compositions. This equation of state was based on a group contribution approach (GC-EOS) that allowed extrapolating the scarce experimental information available not only in pressure, temperature, and composition but also in molecular structure. The basic conceptual design was later confirmed by experimental information and pilot plant studies. In this case, the design of the experimental studies was guided by the process conceptual design. The experimental results provided key information for the upgrading of the thermodynamic model.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082631
Language : En, Es, Fr & De

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Book Description :

In this chapter, the problem of sustainability of the chemical and pharmaceutical industries and the principles of green chemistry are outlined. In particular, the need for secure and environmentally safe solvents (ESSs) is pointed out. There are several ESS alternatives under study nowadays, like ionic liquids, polymeric solvents, and simple liquids like fatty esters; however, an increasing attention is being paid to supercritical fluids (SCFs) for a wide variety of applications in the chemical and pharmaceutical as well as in the materials and electronic industry. In the present chapter after an introduction to the fundamentals of SCF extraction, PEE principles are applied to several case studies of SCF—substrate mixtures of natural products with different types of phase behavior. Finally the application of SCF for supercritical micronization is reviewed and a case study is presented.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082569
Language : En, Es, Fr & De

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Book Description :

The design of the phase scenario that meets the process needs defines a phase equilibrium engineering problem. The first step in the design of the phase scenario is to consider the mixture(s) to be handled in the process. What are the components, their chemical nature, composition, physical state, pressure, and/or temperature? This is a critical step and quite often one goes back to this step in the search of an answer to solve the phase design problem. The phase behavior of the mixture is closely determined by the molecular interactions of the components of the mixture. Therefore, an introduction to the different types of molecular interactions is provided in this chapter. Finally, a classification of molecules and families of separation problems is given, which shows the strong connection between the classes of molecules and the proper separation technologies.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 012808264X
Language : En, Es, Fr & De

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Book Description :

In this chapter, supercritical fluid extraction and fractionation of natural oil mixtures are presented as an alternative to traditional methods like steam distillation, liquid solvent extraction, or vacuum distillation. In the search of alternatives to traditional methods, the principles of phase equilibrium engineering are followed to analyze the SCF extraction and continuous fractionation of natural products. The fundamentals of these high pressure technologies, which combine the principles of distillation and extractive distillation, are presented together with the limitation of simple countercurrent fractionation, which in the end justifies the need of external reflux. Through several case studies, the optimization and solvent selection are analyzed for processes in which the fractionation is driven by the pressure, temperature, and flow rate of the SCF.

Phase Equilibrium Engineering

Phase Equilibrium Engineering Book
Author : Esteban Brignole,Selva Pereda
Publisher : Elsevier Inc. Chapters
Release : 2013-04-02
ISBN : 0128082623
Language : En, Es, Fr & De

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Book Description :

In this chapter, two well-known separation processes are introduced: homogeneous and heterogeneous azeotropic distillation. Since these technologies are reviewed in many separation process textbooks, the aim here is only to highlight the underlying phase equilibrium engineering principles of homogeneous and heterogeneous azeotropic distillation. Moreover, these types of distillations require the selection of a proper solvent to accomplish the mixture fractionation. Besides discussing the solvent functionality to make a proper selection, in the second part of the chapter we show how to design adequate solvents for liquid extraction and extractive distillation by computer-aided molecular design of solvents.

Phase Equilibrium in Mixtures

Phase Equilibrium in Mixtures Book
Author : Anonim
Publisher : Unknown
Release : 1969
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Phase Equilibrium in Mixtures book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Crc Handbook of Phase Equilibria and Thermodynamic Data of Polymer Solutions at Elevated Pressures

Crc Handbook of Phase Equilibria and Thermodynamic Data of Polymer Solutions at Elevated Pressures Book
Author : CHRISTIAN. WOHLFARTH
Publisher : CRC Press
Release : 2021-06-30
ISBN : 9781032098821
Language : En, Es, Fr & De

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Book Description :

Thermodynamic data of polymer solutions are paramount for industrial and laboratory processes. These data also serve to understand the physical behavior of polymer solutions, study intermolecular interactions, and gain insights into the molecular nature of mixtures. Nearly a decade has passed since the release of a similar CRC Handbook and since then a large amount of new experimental data have been published, which is now compiled in this book. The CRC Handbook of Phase Equilibria and Thermodynamic Data of Polymer Solutions at Elevated Pressures features nearly 500 newly published references containing approximately 175 new vapor-liquid equilibrium data sets, 25 new liquid-liquid equilibrium data sets, 540 new high-pressure fluid phase equilibrium data sets, 60 new data sets describing PVT properties of polymers, and 20 new data sets with densities or excess volumes. The book is a valuable resource for researchers, specialists, and engineers working in the fields of polymer science, physical chemistry, chemical engineering, materials science, biological science and technology, and those developing computerized predictive packages.

Phase Equilibria Phase Diagrams and Phase Transformations

Phase Equilibria  Phase Diagrams and Phase Transformations Book
Author : Mats Hillert
Publisher : Cambridge University Press
Release : 2007-11-22
ISBN : 1139465864
Language : En, Es, Fr & De

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Book Description :

Computational tools allow material scientists to model and analyze increasingly complicated systems to appreciate material behavior. Accurate use and interpretation however, requires a strong understanding of the thermodynamic principles that underpin phase equilibrium, transformation and state. This fully revised and updated edition covers the fundamentals of thermodynamics, with a view to modern computer applications. The theoretical basis of chemical equilibria and chemical changes is covered with an emphasis on the properties of phase diagrams. Starting with the basic principles, discussion moves to systems involving multiple phases. New chapters cover irreversible thermodynamics, extremum principles, and the thermodynamics of surfaces and interfaces. Theoretical descriptions of equilibrium conditions, the state of systems at equilibrium and the changes as equilibrium is reached, are all demonstrated graphically. With illustrative examples - many computer calculated - and worked examples, this textbook is an valuable resource for advanced undergraduates and graduate students in materials science and engineering.

High Pressure Chemical Engineering

High Pressure Chemical Engineering Book
Author : P.R. von Rohr,C. Trepp
Publisher : Elsevier
Release : 1996-09-23
ISBN : 9780080533957
Language : En, Es, Fr & De

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Book Description :

This present volume contains the text of all contributions (oral and posters), except for the four invited papers, which were presented at the 3rd International Symposium on High Pressure Chemical Engineering on October 7-9, 1996. The symposium was divided into three major sections, namely - Chemical reaction engineering - Separation processes and phase equilibria - Plant, apparatus, machinery, measurements, control.

Industrial Internship in Chemical Engineering

Industrial Internship in Chemical Engineering Book
Author : Paul Karl Behrens
Publisher : Unknown
Release : 1979
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Industrial Internship in Chemical Engineering book written by Paul Karl Behrens, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Physical and Chemical Equilibrium for Chemical Engineers

Physical and Chemical Equilibrium for Chemical Engineers Book
Author : Noel de Nevers
Publisher : Wiley-Interscience
Release : 2002-01-09
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Introduction to equilibrium - Basic thermodynamics - The simplest phase equilibrium examples and some simple estimating rules - Minimization of Gibbs Free energy - Vapor pressure, the clapeyron equation, and single pure chemical species phase equilibrium - Partial molal properties - Fugacity, ideal solutions, activity, activity coefficient - vapor-liquid equilibrium (VLE) at low pressures - Correlating and predicting nonideal VLE - Vapor-liquid equilibrium (VLE) at high pressures - Liquid-liquid, liquid-solid, and gas-solid equilibrium -Chemical equilibrium - Equilibrium in complex chemical reactions - Equilibrium with gravity or centrifugal force, osmotic equilibrium, equilibrium with surface tension - The phase rule.

Molecular Thermodynamics of Fluid phase Equilibria

Molecular Thermodynamics of Fluid phase Equilibria Book
Author : J. M. Prausnitz,Ruediger N. Lichtenthaler,Edmundo Gomes de Azevedo
Publisher : Prentice Hall
Release : 1999
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Appropriate for chemical engineering students, Molecular Thermodynamics of Fluid-Phase Equilibria presents a broad introduction to the thermodynamics of phase equilibria in chemical engineering design, especially in separation operations.