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Modeling Of Fluid Phase Equilibria By Pc Saft Eos Solubility Of Gases Vapor In Polythylene
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Book Synopsis Modeling of Fluid Phase Equilibria by PC-Saft EOS: Solubility of Gases/Vapor in Polythylene by :
Download or read book Modeling of Fluid Phase Equilibria by PC-Saft EOS: Solubility of Gases/Vapor in Polythylene written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The prediction or correlation of thermodynamic properties and phase equilibria with equations of state remains an important goal in chemical and related industries. Although the use of equations of state has for a long time has been restricted to systems of simple fluids, there is an increasing demand for models that are also suitable for complex and macromolecular compounds. Due to its ability to describe the thermodynamics of symmetric as well as asymmetric systems, the most common approaches for modeling gas-polymer solubility have been based on the PC-SAFT EOS. It has wide applicability starting from low molecular weight organic compounds to highly non-ideal macro-molecular weight system such as polymer In the present work, PC-SAFT equation of state of Gross & Sadowski, 2001 has been used to model solubility of various gases /vapors in liquid polyethylene to demonstrate the suitability of PC-SAFT EOS for polymer-solvent system.
Book Synopsis Modeling and Simulation of Solid-Liquid Equilibrium by Perturbed-Chain Statistical Associating Fluid Theory by :
Download or read book Modeling and Simulation of Solid-Liquid Equilibrium by Perturbed-Chain Statistical Associating Fluid Theory written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Solubility of polyethylene in mixed xylene was determined experimentally at atmospheric pressure by an indigenously developed laser based technique. In this work, PC-SAFT equation of state was used to model solid-liquid equilibrium (SLE). With the experimental SLE data available in literature for low molecular weight n-alkanes and aromatic compounds both at atmospheric and elevated pressure, the suitability of the developed SLE model based on PC-SAFT equation of state was tested. Subsequently a sensitivity study was performed to understand the effects of different parameters that affect the solubility of polyethylene. The validated model was then used to correlate the experimentally determined solubility data for polyethylene system.
Book Synopsis Working Guide to Vapor-Liquid Phase Equilibria Calculations by : Tarek Ahmed
Download or read book Working Guide to Vapor-Liquid Phase Equilibria Calculations written by Tarek Ahmed and published by Gulf Professional Publishing. This book was released on 2009-08-27 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Working Guide to Vapor-Liquid Phase Equilibria Calculations offers a practical guide for calculations of vapor-phase equilibria. The book begins by introducing basic concepts such as vapor pressure, vapor pressure charts, equilibrium ratios, and flash calculations. It then presents methods for predicting the equilibrium ratios of hydrocarbon mixtures: Wilson's correlation, Standing's correlation, convergence pressure method, and Whitson and Torp correlation. The book describes techniques to determine equilibrium ratios of the plus fraction, including Campbell's method, Winn's method, and Katz's method. The remaining chapters cover the solution of phase equilibrium problems in reservoir and process engineering; developments in the field of empirical cubic equations of state (EOS) and their applications in petroleum engineering; and the splitting of the plus fraction for EOS calculations. - Includes explanations of formulas - Step by step calculations - Provides examples and solutions
Book Synopsis CRC Handbook of Thermodynamic Data of Polymer Solutions at Elevated Pressures by : Christian Wohlfarth
Download or read book CRC Handbook of Thermodynamic Data of Polymer Solutions at Elevated Pressures written by Christian Wohlfarth and published by CRC Press. This book was released on 2005-01-27 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides the only complete collection of high-pressure thermodynamic data that is essential for understanding polymer solutions. It contains data on vapor-liquid equilibria and gas solubilities, liquid-liquid equilibria, high-pressure fluid phase equilibria for polymer systems in supercritical fluids, enthalpic and volumetric data, as well as second virial coefficients all at elevated pressures. It covers all areas needed by researchers and engineers who handle polymer systems in supercritical fluids; materials science and technological applications such as computerized predictive packages; and chemical and biochemical processes, such as synthesis and characterization, fractionation, separation, purification, and finishing of polymers and related materials.
Book Synopsis Modeling of Solid-Liquid Equilibrium by : Sunil Maity
Download or read book Modeling of Solid-Liquid Equilibrium written by Sunil Maity and published by LAP Lambert Academic Publishing. This book was released on 2009-10 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The knowledge of solid-liquid equilibrium (SLE) and availability of a validated computer based model is of great technical interest for developing and designing separation processes, such as crystallization and fractionation and solving industrial problems. The latest version of Statistical Associating Fluid Theory (SAFT), Perturbed Chain-SAFT (PC-SAFT), is very much successful for highly non-ideal macro-molecular weight system such as polymers. With the experimental SLE data available in literature for low molecular weight n-alkanes and aromatic compounds both at atmospheric and elevated pressure, the suitability of the developed SLE model based on PC-SAFT was tested. Subsequently sensitivity study was performed for polyethylene. The solubility of two different grade of polyethylene in mixed xylene was then determined using indigenously developed laser based technique. The viscosity average molecular weight, specific gravity, and melting point of the polyethylene samples were determined using standard technique. The validated model was then used to correlate the experimentally determined solubility of polyethylene in xylene.
Book Synopsis Vapor-liquid Phase Equilibria of Nonideal Fluids with a Ge-EoS Model by : Socrates Ioannidis
Download or read book Vapor-liquid Phase Equilibria of Nonideal Fluids with a Ge-EoS Model written by Socrates Ioannidis and published by . This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study dealt with the prediction and correlation of vapor-liquid equilibria behavior of nonideal fluids. The thermodynamic formalism of the GE-EoS models, which combines the two traditional methods gamma-phi and phi-phi used so far for low and high pressure phase equilibria correlations respectively, has been combined with the 1FGE model, based on one-fluid theory, to produce a more consistent approach to the phase equilibrium problem. In the first part of our study we examine the predictive abilities of our model for vapor-liquid equilibria of highly nonideal fluids. The results establish the fact that the Huron-Vidal mixing rule with a one parameter version of the lFGE model, is able to successfully utilize available experimental information at low pressures for phase equilibria predictions of multicomponent mixtures over an extended range of pressures and temperatures. In the second part of the study we perform an analysis of the correlative abilities of the 1FGE model, as applied to hydrogen-hydrocarbon mixtures. The results of this part suggest that the unique local composition character of the 1FGE model, along with its one size and one temperature-dependent energy parameter, make it able to adequately describe vapor-liquid equilibria behavior of multicomponent mixtures for this highly asymmetric class of mixtures. Moreover, it is shown that the model parameters for binary hydrogen-hydrocarbon mixtures can be correlated to the acentric factor of the hydrocarbon. The important class of the refrigerant mixtures was modeled in the third part of this study. The lFGE model was introduced into the Wong-Sandler mixing rule, based on the infinite pressure state thermodynamic formalism. The results for these systems showed that a limited amount of experimental data, either at low or high pressures can be utilized to provide a parameter which is practically independent of the temperature set used. As shown from the results, this single parameter can be used to extend vapor-liquid equilibria predictions over a range of conditions for this difficult class of systems. More importantly, we set a heuristic rule able to screen multiparameter and one parameter models. A coordination temperature-parameter planet can be used as a predictive tool from a limited amount of information. Our model comes in lieu of the GE models based on two-fluid theory, which are inconsistent with the one fluid character of an EoS. The 1FGE-EoS framework proposed in this work meets current needs in the area of Applied Thermodynamics, which require that the model's parameters can be obtained from a limited information of experimental data and can give for accurate phase equilibria predictions of nonideal mixtures from low to high pressures.
Book Synopsis Phase Behavior by : Curtis H. Whitson
Download or read book Phase Behavior written by Curtis H. Whitson and published by Society of Petroleum Engineers. This book was released on 2000 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase Behavior provides the reader with the tools needed to solve problems requiring a description of phase behavior and specific pressure/volume/temperature (PVT) properties.
Book Synopsis Thermodynamic Models by : Michael L. Michelsen
Download or read book Thermodynamic Models written by Michael L. Michelsen and published by . This book was released on 2007 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phase Equilibrium in Process Design by : H. R. Null
Download or read book Phase Equilibrium in Process Design written by H. R. Null and published by John Wiley & Sons. This book was released on 1970 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Techniques to Facilitate the Use of Equations of State for Complex Fluid-phase Equilibria by : Robert J. Topliss
Download or read book Techniques to Facilitate the Use of Equations of State for Complex Fluid-phase Equilibria written by Robert J. Topliss and published by . This book was released on 1985 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluid Phase Equilibria with Theoretical and Semi-empirical Equation of State Models by : El-Houari Benmekki
Download or read book Fluid Phase Equilibria with Theoretical and Semi-empirical Equation of State Models written by El-Houari Benmekki and published by . This book was released on 1988 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phase Equilibria and Fluid Properties in the Chemical Industry by : American Institute of Chemical Engineers
Download or read book Phase Equilibria and Fluid Properties in the Chemical Industry written by American Institute of Chemical Engineers and published by . This book was released on 1980 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Asphaltene Deposition by : Francisco M. Vargas
Download or read book Asphaltene Deposition written by Francisco M. Vargas and published by CRC Press. This book was released on 2018-05-16 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: As global consumption of fossil fuels such as oil increases, previously abundant sources have become depleted or plagued with obstructions. Asphaltene deposition is one of such obstructions which can significantly decrease the rate of oil production. This book offers concise yet thorough coverage of the complex problem of asphaltene precipitation and deposition in oil production. It covers fundamentals of chemistry, stabilization theories and mechanistic approaches of asphaltene behavior at high temperature and pressure. Asphaltene Deposition: Fundamentals, Prediction, Prevention, and Remediation explains techniques for experimental determination of asphaltene precipitation and deposition and different modeling tools available to forecast the occurrence and magnitude of asphaltene deposition in a given oil field. It discusses strategies for mitigation of asphaltene deposition using chemical inhibition and corresponding challenges, best practices for asphaltene remediation, current research, and case studies.
Book Synopsis Process and Chemical Engineering by :
Download or read book Process and Chemical Engineering written by and published by . This book was released on 2002 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Determination and Equation of State Modeling of High-pressure Fluid Behavior by : Yue Wu
Download or read book Experimental Determination and Equation of State Modeling of High-pressure Fluid Behavior written by Yue Wu and published by . This book was released on 2013 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-pressure solution behavior such as density and phase behavior is a critical fundamental property for the design and optimization of various chemical processes, such as distillation and extraction in the production and purification of oils, polymers, and other natural materials. In this Ph. D. study, solution behavior data are experimentally determined and equation of state (EoS) modeled for n-hexadecane, n-octadecane, n-eicosane, methylcyclohexane, ethylcyclohexane, cis-1,2-dimethylcyclohexane, cis-1,4-dimethylcyclohexane, trans-1,4-dimethylcyclohexane, o-xylene, m-xylene, p-xylene, and 2-methylnaphthalene at temperatures to 525 K and pressures to 275 MPa. A variable-volume view cell coupled with a linear variable differential transformer is used for the high-pressure determination. The reported density data are less than 0.4% of available literature data, which is within the estimated accumulated experimental uncertainty, 0.75%. Special attention is paid to the effect of architectural differences on the resultant high-pressure solution behavior. The reported data of low molecular weight hydrocarbons are modeled with Peng-Robinson (PR) equation of state (EoS), high-temperature high-pressure volume-translated cubic (HTHP VT-cubic) EoS, and perturbed-chain statistical fluid theory (PC-SAFT) EoS. The three pure-component parameters in PC-SAFT EoS can be either obtained from literature or from a group contribution (GC) method. Generally, PR EoS gives the worst predictions and HTHP VT-cubic EoS provides modest improvements over the PR EoS, but both of the equations underpredict the densities at high pressures. On the other hand, PC-SAFT EoS, with parameters from the literature or from a GC method, gives the improved density predictions with respect to PR EoS and HTHP VT-cubic EoS, although an overprediction of densities is found at high pressures. Model calculations also highlight the capability of these equations to account for the different densities observed for the hydrocarbon isomers. However, none of the EoS investigated in this study can fully account for the effect of isomeric structural differences on the high-pressure densities. For a better prediction of densities at high pressures, a new set of PC-SAFT pure-component parameters are obtained from a fit of the experimental density data obtained in this study and the mean absolution percent deviation is within 0.4%. The experimental technique and PC-SAFT EoS modeling method are extended to a star polymer-propane mixture. Star polymers with a fixed number of arms have a globular structure that does not promote chain entanglements. Star polymers can be synthesized with a large number of functional groups that can be readily modified to adjust their physical properties for specific applications in the areas of catalysis, coatings, lubrication, and drug delivery. In this study, a star polymer with a divinylbenzene core and statistically random methacrylate copolymer arms is synthesized with reversible addition-fragmentation-transfer method and fractionated with supercritical carbon dioxide and propane to obtain fractions with low molecular weight polydispersity. The phase behavior and density behavior are experimentally determined in supercritical propane for fractionated star polymers and the corresponding linear copolymer arms at temperatures to 423 K and pressures to 210 MPa. Experimental data are presented on the impact of the molecular weight, the backbone composition of the lauryl and methylmethacrylate repeat units in the copolymer arms, and the DVB core on the polymer-propane solution behavior. The star polymer is significantly more soluble due to its unique structure compared with the solubility of the linear copolymer arms in propane. The resultant phase behavior for the two homopolymers and the copolymers in propane are modeled using the PC-SAFT and copolymer PC-SAFT EoS, which give reasonable predictions for both phase behavior and density behavior. Model calculations are not presented for the phase behavior of the star polymers in propane since the PC-SAFT approach is not applicable for star polymer structures.
Book Synopsis Equation-of-state Modeling of Phase Equilibria in Petroleum Fluids by : Marianne Jørgensen
Download or read book Equation-of-state Modeling of Phase Equilibria in Petroleum Fluids written by Marianne Jørgensen and published by . This book was released on 1996 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fluid Phase Equilibrium as Modeled by the Statistical Associated Fluid Theory (SAFT) Equation of State by : Brian A. Ott
Download or read book Fluid Phase Equilibrium as Modeled by the Statistical Associated Fluid Theory (SAFT) Equation of State written by Brian A. Ott and published by . This book was released on 2009 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
