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Physical Property Methods and Models 11.1 Contents • Iii SRK Part Number: Aspen Physical Property System 11.1 September 2001 Copyright (c) 1981-2001 by Aspen Technology, Inc. All rights reserved. Aspen Plus®, Aspen Properties®, Aspen Engineering Suite , AspenTech®, ModelManager , the aspen leaf logo and Plantelligence are trademarks or registered trademarks of Aspen Technology, Inc., Cambridge, MA. BATCHFRAC and RATEFRAC are trademarks of Koch Engineering Company, Inc. All other brand and product names are trademarks or registered trademarks of their respective companies. This manual is intended as a guide to using AspenTech’s software. This documentation contains AspenTech proprietary and confidential information and may not be disclosed, used, or copied without the prior consent of AspenTech or as set forth in the applicable license agreement. Users are solely responsible for the proper use of the software and the application of the results obtained. Although AspenTech has tested the software and reviewed the documentation, the sole warranty for the software may be found in the applicable license agreement between AspenTech and the user. ASPENTECH MAKES NO WARRANTY OR REPRESENTATION, EITHER EXPRESSED OR IMPLIED, WITH RESPECT TO THIS DOCUMENTATION, ITS QUALITY, PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. Corporate Aspen Technology, Inc. Ten Canal Park Cambridge, MA 02141-2201 USA Phone: (1) (617) 949-1021 Toll Free: (1) (888) 996-7001 Fax: (1) (617) 949-1724 URL: http://www.aspentech.com Division Design, Simulation and Optimization Systems Aspen Technology, Inc. Ten Canal Park Cambridge, MA 02141-2201 USA Phone: (617) 949-1000 Fax: (617) 949-1030 Contents For More Information.......................................................................................................viii Technical Support.............................................................................................................viii Contacting Customer Support ................................................................................ix Hours ......................................................................................................................ix Phone ......................................................................................................................ix Fax ...........................................................................................................................x E-mail ......................................................................................................................x Overview of Aspen Physical Property Methods 1-1 Overview ..........................................................................................................................1-1 Thermodynamic Property Methods..................................................................................1-2 Equation-of-State Method ....................................................................................1-3 Activity Coefficient Method.................................................................................1-8 Equation-of-State Models...................................................................................1-20 Activity Coefficient Models ...............................................................................1-29 Transport Property Methods...........................................................................................1-32 Viscosity and Thermal Conductivity Methods...................................................1-32 Diffusion Coefficient Methods...........................................................................1-33 Surface Tension Methods ...................................................................................1-34 Nonconventional Component Enthalpy Calculation ......................................................1-34 References ......................................................................................................................1-36 Property Method Descriptions 2-1 Overview ..........................................................................................................................2-1 Classification of Property Methods and Recommended Use ...........................................2-1 IDEAL Property Method..................................................................................................2-7 Property Methods for Petroleum Mixtures.....................................................................2-10 Liquid Fugacity and K-Value Model Property Methods....................................2-11 BK10...................................................................................................................2-11 CHAO-SEA........................................................................................................2-12 GRAYSON/ GRAYSON2 .................................................................................2-13 MXBONNEL......................................................................................................2-15 Petroleum-Tuned Equation-of-State Property Methods.....................................2-15 PENG-ROB ........................................................................................................2-16 RK-SOAVE........................................................................................................2-17 Physical Property Methods and Models 11.1 Contents • iii SRK ....................................................................................................................2-18 Common Models ................................................................................................2-20 Equation-of-State Property Methods for High-Pressure Hydrocarbon Applications.....2-21 BWR-LS .............................................................................................................2-22 BWRS.................................................................................................................2-23 LK-PLOCK ........................................................................................................2-25 PR-BM................................................................................................................2-26 RKS-BM.............................................................................................................2-27 Common Models ................................................................................................2-28 Flexible and Predictive Equation-of-State Property Methods........................................2-29 PRMHV2............................................................................................................2-31 PRWS .................................................................................................................2-32 PSRK ..................................................................................................................2-33 RK-ASPEN.........................................................................................................2-34 RKSMHV2 .........................................................................................................2-35 RKSWS ..............................................................................................................2-36 SR-POLAR.........................................................................................................2-37 Common Models ................................................................................................2-38 Liquid Activity Coefficient Property Methods...............................................................2-40 Equations of State...............................................................................................2-40 Activity Coefficient Models ...............................................................................2-47 Common Models ................................................................................................2-56 Electrolyte Property Methods.........................................................................................2-56 AMINES.............................................................................................................2-58 APISOUR ...........................................................................................................2-60 ELECNRTL........................................................................................................2-61 ENRTL-HF.........................................................................................................2-63 ENRTL-HG ........................................................................................................2-63 PITZER...............................................................................................................2-64 B-PITZER...........................................................................................................2-66 PITZ-HG.............................................................................................................2-68 General and Transport Property Model Parameter Requirements......................2-68 Solids Handling Property Method ..................................................................................2-69 Steam Tables...................................................................................................................2-73 STEAM-TA........................................................................................................2-73 STEAMNBS/STEAMNBS2 ..............................................................................2-74 Property
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