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DESIGN II for Windows Training Document

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DESIGN II for Windows Training Document

    Table of Contents

    Chapter 1: Introduction

    Welcome to DESIGN II for Windows Training ! ................................................................................................................................ 1 The Objective .................................................................................................................................................................................... 1 Prerequisites ..................................................................................................................................................................................... 1 What you’ll learn to do...................................................................................................................................................................... 1 Manual Outline .................................................................................................................................................................................. 1 Chapter 1: Introduction ................................................................................................................................................................... 1 Chapter 2: Getting Started .............................................................................................................................................................. 1 Chapter 3: Tutorial .......................................................................................................................................................................... 1 Chapter 4: Modules and Features ................................................................................................................................................... 1 Chapter 5: Thermodynamic Overview and Methods ......................................................................................................................... 1 Chapter 6: Mixture Calculations ...................................................................................................................................................... 1 Chapter 7: Advanced Features ....................................................................................................................................................... 2 Chapter 2: Getting Started

    DESIGN II for Windows Benefits ...................................................................................................................................................... 3 The ability to get the right answer quickly ....................................................................................................................................... 3 High personal productivity ............................................................................................................................................................... 3 Solid Communication Skills .............................................................................................................................................................. 3 DESIGN II for Windows features ...................................................................................................................................................... 3 Basic Windows Concepts ................................................................................................................................................................. 5 Title bar/window frame/window control boxes: ................................................................................................................................. 5 Menu bar: ...................................................................................................................................................................................... 5 Drawing Area: ................................................................................................................................................................................ 6 Status Line: .................................................................................................................................................................................... 6 Key Points:..................................................................................................................................................................................... 6 DESIGN II for Windows New Features ............................................................................................................................................. 6 DESIGN II for Windows V10.23 ......................................................................................................................................................... 6 Graphical User Interface Enhancements V10.23 ............................................................................................................................. 6 Simulator Kernel Enhancements V10.23 ......................................................................................................................................... 7 Graphical User Interface ................................................................................................................................................................... 9 Browser box ................................................................................................................................................................................... 9 Selection Tool, Stream .................................................................................................................................................................. 10 Text, Drawing Elements, & Equipment Tool ................................................................................................................................... 11

    Chapter 3: Tutorial

    Exercise: High ethane recovery plant ............................................................................................................................................ 13 What You'll Learn In This Session .................................................................................................................................................. 13 Start Up DESIGN II for Windows .................................................................................................................................................... 14 Using Edit Functions .................................................................................................................................................................... 15 Using View Functions ................................................................................................................................................................... 17 View a Help File .............................................................................................................................................................................. 20 Lay Out the Equipment ................................................................................................................................................................... 20 Add Streams and Labels ................................................................................................................................................................ 21 Add a Title to the Drawing .............................................................................................................................................................. 25 Specify the Feed Stream ................................................................................................................................................................ 27 Enter Equipment Specifications ..................................................................................................................................................... 30 Specify the Thermodynamic Methods ........................................................................................................................................... 32 Save and Name the Flowsheet ....................................................................................................................................................... 33 View the Input File .......................................................................................................................................................................... 33

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    Table of Contents

     Execute the Simulation ................................................................................................................................................................... 34 View the Simulation Results ........................................................................................................................................................... 36 Transfer Data to Excel Spreadsheet .............................................................................................................................................. 37 View Results ................................................................................................................................................................................... 38 Changing the PSD File .................................................................................................................................................................... 41

Chapter 4: Modules and Features

    Equipment Modules ........................................................................................................................................................................ 43

    Distillation Columns ...................................................................................................................................................................... 44 Column Conventions .................................................................................................................................................................... 46 Heat and Material Specifications ................................................................................................................................................... 46 Optional Column Description......................................................................................................................................................... 48 Optional Output Information .......................................................................................................................................................... 49 Convergence Techniques ............................................................................................................................................................. 49 Reactors ...................................................................................................................................................................................... 51 Basic Flowsheet Strategies ........................................................................................................................................................... 55 Repositioning Equipment .............................................................................................................................................................. 55 Sharing Specs.............................................................................................................................................................................. 56 Flowsheets with Recycles .............................................................................................................................................................. 56

    Recycle Strategies ....................................................................................................................................................................... 57 Analyze your flowsheet. ................................................................................................................................................................ 57 Recycle Commands ..................................................................................................................................................................... 60 Selecting Recycle Streams ........................................................................................................................................................... 60 Recycle Convergence Methods..................................................................................................................................................... 61 Tolerance and Number of Iterations .............................................................................................................................................. 61 Setting Your Own Calculation Order.............................................................................................................................................. 61 Working Through a Flowsheet ...................................................................................................................................................... 62 Additional Commands ................................................................................................................................................................... 62

    Chapter 5: Thermodynamic Overview and Methods

    Thermodynamic and Transport Property Options ......................................................................................................................... 63 Component Properties ................................................................................................................................................................... 64 Component Property Estimation Techniques ................................................................................................................................ 65 Specific Thermodynamic Methods ................................................................................................................................................. 66

    Historical Perspective ................................................................................................................................................................... 66 Data Regression Methods ............................................................................................................................................................ 66 Renon Equation ............................................................................................................................................................................ 67 Tabular K-values, Enthalpies, and Densities .................................................................................................................................. 68 User Provided Thermodynamic Equations ..................................................................................................................................... 69 Hydrocarbon System K-Values, Enthalpies and Densities .............................................................................................................. 69 Lee-Kesler-Ploecker (1978) .......................................................................................................................................................... 71 Hydrocarbon-Water-Sour Gas Systems ........................................................................................................................................ 72 Immiscible .................................................................................................................................................................................... 72 GPA Water .................................................................................................................................................................................. 72 Solubility of Water on a Component Basis ..................................................................................................................................... 73 NO IMMiscible calculation ............................................................................................................................................................. 73 Selecting K-value Methods ........................................................................................................................................................... 73 Special K-value Options ................................................................................................................................................................ 73 Enthalpy and Entropy Options ...................................................................................................................................................... 75 Selecting Enthalpy Options ........................................................................................................................................................... 76 Density Options ............................................................................................................................................................................ 76 Petroleum Fractions ..................................................................................................................................................................... 77

    Chapter 6: Mixture Calculations

    Component Mixture Calculations ................................................................................................................................................... 79

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    Table of Contents

     Setting STP/NTP Conditions ......................................................................................................................................................... 79 Additional Stream Properties ......................................................................................................................................................... 79 Hydrate Formation ........................................................................................................................................................................ 79 COFreeze .................................................................................................................................................................................. 79 2 Critical Temperature and Pressure ................................................................................................................................................ 79 Saturate Feeds with Water ........................................................................................................................................................... 80 Bubble, Dew and Water-Dew points ............................................................................................................................................. 80 Heating Values and Wobbe Index ................................................................................................................................................. 80 Reid Vapor Pressure .................................................................................................................................................................... 81 Heating and Cooling Curves ......................................................................................................................................................... 81 Lost Work Analysis ...................................................................................................................................................................... 81

    Chapter 7: Advanced Features

    Equipment Module Highlights ........................................................................................................................................................ 84

    Phase Envelope ........................................................................................................................................................................... 84 Phase Map ................................................................................................................................................................................... 86 Flash and Multiflash...................................................................................................................................................................... 87 Polytropic Compressor ................................................................................................................................................................. 88 Compressor ................................................................................................................................................................................. 89 Inline Fortran ................................................................................................................................................................................... 90

    Typical Fortran Applications .......................................................................................................................................................... 90 Basic Rules .................................................................................................................................................................................. 90 Special Inline Fortran Commands ................................................................................................................................................. 90 Functions and Subroutines ........................................................................................................................................................... 91 Component Point Property Subroutines......................................................................................................................................... 91 Critical point values ...................................................................................................................................................................... 91 Normal boiling point, Mol weight .................................................................................................................................................... 91 Correlation constants .................................................................................................................................................................... 92 Utility Subroutines ........................................................................................................................................................................ 92 Thermodynamic Library Subroutines ............................................................................................................................................. 92 DESIGN II Flash Subroutine (Use with CALL) ............................................................................................................................... 92 User Libraries............................................................................................................................................................................... 93 ADD Modules ............................................................................................................................................................................... 93 Passing Data Between Modules .................................................................................................................................................... 93 Custom Distill Specifications ......................................................................................................................................................... 94

    Case Studies ................................................................................................................................................................................... 94

    Case Study: Entering Commands ................................................................................................................................................. 95 Case Study: Change and Step Examples ...................................................................................................................................... 95 Building Tables ............................................................................................................................................................................. 96 Case Study Plots.......................................................................................................................................................................... 96 Limiting Output ............................................................................................................................................................................. 96 Specifying Streams for Linked Flowsheets ................................................................................................................................... 97 Using Flowsheet Links ................................................................................................................................................................... 98 Simulating Linked Flowsheets ..................................................................................................................................................... 100

    Flowsheet Linking Notes ............................................................................................................................................................. 101

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Table of Contents

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    Chapter 1: Introduction

    Welcome to DESIGN II for Windows Training !

We know you are eager to get started on understanding and using DESIGN II for Windows. To give you a good idea of what this manual will cover, we have outlined the material for you. Take time to read this outline and you will be better prepared for the material presented. Plus, looking this outline over may start you thinking about some questions about DESIGN II for Windows or the training course. It's more than just simulation. It's a new, intuitive way to do your job faster, easier, and smarter.

    The Objective

     The objective of this manual is to introduce you to DESIGN II for Windows and to give you the skills needed to perform additional process engineering tasks in the Windows environment. These tasks include creating process simulation (or flow) diagram sketches, creating input files, executing the simulation, reviewing results, loading the results into a spreadsheet, and creating reports. You will get step-by-step guidance on how to get your job done.

    Prerequisites

    General knowledge of computers and windows-based interfaces is recommended. However, a brief review of Windows conventions is included in the first section.

    What You Will Learn In This Training

After finishing this training manual, you will be able to:

     start/quit DESIGN II for Windows;

     use the DESIGN II for Windows graphical user interface

     create and modify process flow sketches;

     create input files and run flowsheet simulations;

     review simulation results several ways

     transfer results to spreadsheets or reports;

     print results and reports

    Manual Outline

     This manual consists of the following different sections:

    Chapter 1: Introduction A brief introduction of the contents. Chapter 2: Getting Started We will cover the benefits of DESIGN II for Windows, basic Windows concepts, overview of Version 8.00- 8.15 new features, and the graphical user interface (GUI).

    Chapter 3: Tutorial We will cover feed stream characterization, use of menus, thermodynamic choices, equipment specification, creation of input files, flowsheet simulation, review of results, transfer of data to spreadsheet files, and printing results. Chapter 4: Modules and Features We will cover distillation columns, reactors, and basic recycle loops. Chapter 5: Thermodynamic Overview and Methods We will briefly cover all thermodynamic and thermophysical property options available in DESIGN II for Windows. We will cover equation details, with particular emphasis on cubic equations of state, appropriate temperature and pressure ranges, and composition limits. Chapter 6: Mixture Calculations We will cover standard/normal conditions, hydrate prediction, CO freeze-up, critical properties, vapor phase saturation with water, Reid 2vapor pressure and heating/cooling curves.

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Introduction Chapter 7: Advanced Features We will cover use of Phase Map, Phase Envelope, Flash, Multiflash, Compressor, Polytropic compressor, Inline Fortran, Case Study and multiple Flowsheet Linking to perform daily engineering tasks.

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    Chapter 2: Getting Started

    DESIGN II for Windows Benefits

     Process engineers turn ideas into reality. But in today‟s working environment, these engineers must also tackle the challenges of:

     reduced resources and budgets

     multiple projects with tight schedules

     increased regulations, environmental and safety requirements This list goes on. . . Many of our clients--engineers--tell us that to be effective and efficient in this workplace, you need:

     The ability to get the right answer quickly.

     High personal productivity

     Solid communication skills Let‟s examine these needs briefly. #1. Ability to get the right answers quickly. A poor answer means downtime, project delays, and increased capital costs. You need a tool that helps you get the right answer every time, with results you‟re confident in. #2. High personal productivity. Working on multiple or large projects, you face deadlines and intense pressures. You need a practical easy-to-use tool, created for the real-world, that helps you meet your milestones for all your projects on-time. #3. Solid communication skills. It‟s vital that you effectively communicate results to managers, vendors, co-workers, and clients. You need a tool that helps you get the message across quickly and accurately.

    DESIGN II for Windows is the tool for you.

    The ability to get the right answer quickly

The core of DESIGN II for Windows has been used and expanded for about 30 years, with excellent results correlating to real-world plants. Calculations are performed rigorously for a wide range of process engineering requirements. To get accurate results, you need a large selection of thermodynamic methods so you can choose the one that suits your application best.

    High personal productivity

     (The standard Microsoft Windows interface provides an intuitive, graphically-based way to work with the program, and you don‟t need to remember character-based syntax. Only the correct degrees of freedom are displayed. Input is automatically checked for you. To work quickly, you can drag and drop equipment and streams into place on the process flow sketch.

    Solid Communication Skills

     (Integrated transfer of results from DESIGN II for Windows to Microsoft Excel spreadsheet and word processor documents. Compliance with Windows standards allows copy/paste of results to many other programs. To communicate results, you can easily add process data to Excel with the click of a button.

    DESIGN II for Windows features

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     Getting Started

     So here‟s your chance to learn about the power and flexibility of DESIGN II for Windows features.

     Microsoft Windows compliance

     Copy simulation results to other Windows programs easily. Point-and-click building of flowsheets

     Quickly place equipment, streams, and text. Pull-down menus and pop-up dialog boxes

     Easily specify basic thermodynamic options and components. Wide range of common unit operations

     Choose from distillation, compressors, pumps, expanders, heat exchangers, reactors, separators, flow meters, valves, etc.

     Inline Fortran capabilities

     Add custom, proprietary calculations or access/ modify equipment and stream parameters during flowsheet simulation. Variety of thermodynamic options

     Select from natural gas processing and refining, petrochemical and chemical, or specialized thermodynamic methods. Equipment performance modules

     Size process lines, depressurization, line pressure drop with or without heat transfer to surroundings, heat exchanger rating, preliminary separator sizing, orifice meters, Glitsch tray sizing, etc. Power user features

     Case studies, interactive processing, and optimization are provided to speed your efforts to examine “what if “ or to find the best answer quickly.

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     Getting Started

    Basic Windows Concepts

Working With Program Components

    Window components The DESIGN II for Windows screen is made up of the following components:

     Title bar/window frame/window control boxes

     Menu bar

     Tool bar

     Browser

     Drawing area

     Status line

    Refer to the graphic on the next page showing you where these components are located on-screen.

     Title bar/window frame/window control

    boxes Menu bar

    Tool bar

    Browser

    Drawing area

    Status line

     Figure 2.1: Basic Windows Graphical User Interface

     Title bar/window frame/window control boxes These are standard windows components. Use them as you normally would with other Windows applications. For details, refer to your Windows User documentation.

    Menu bar To open a main menu item, click on its name. Its menu displays. To select an item from the menu, drag the highlight over it and click.

    Another option is to click on a main menu item, then drag the highlight over the desired item and release the mouse button.

    A menu shortcut uses the keyboard. Each main menu item has an underlined letter in its name. To open a menu, hold down the Alt key and press the key corresponding to the underlined letter. For example, the File menu has the letter F underlined. To WinSim Inc DESIGN II for Windows Training Guide Confidential Information Page 5

     Getting Started

     open the File menu, hold down the Alt key and press the letter f key (this is not case sensitive, so you do not need to hold down

    the Shift key). The menu opens.

    Some menu items produce a sub menu, called a slide right menu. If a menu item has an associated slide right menu, a black arrowhead appears next to the item, pointing to the right. To open a slide right menu, highlight the menu item; the slide right menu displays. Move the cursor over the slide right menu, and then drag the highlight over the desired item and click.

    Tool bar The toolbar displays commonly used DESIGN II for Windows functions, represented as buttons. Each button also has an equivalent item listed on a menu, or a Browser function. Click on the desired button to perform the function. Drawing area This is where you will draw your flowsheet. You can turn on a grid for aligning objects (see the Options/Preferences chapter for details).

    Status line View the drawing status (Ready) and the X/Y coordinates of the cursor position in the Drawing area. Key Points: When using Windows, remember the following guidelines from the Windows graphical user interface philosophy:

     User actions always produce an immediate and visible result.

     Program control is effected by direct manipulation of visual elements with the mouse. Typically the manipulation follows an object-action metaphor: select an object, then specify the action to be taken on it.

     User-program interaction is highly unstructured. At any time, a number of visual elements are present on the screen which, the user may choose to manipulate.

     Applications usually provide a way to undo or reconsider “dangerous” actions.

    DESIGN II for Windows New Features

     The program is always improving. New features are constantly being added, existing options expanded and core kernel calculations fine tuned. We listen and implement all of your requests. The following features were added to the program in the current Version 10.23 (for all details on earlier Versions please refer to program‟s main menu Help…Release Notes).

    DESIGN II for Windows V10.23 December 2010

    Please note that the password algorithm was changed for 10.20 release. All passwords issued before version 10.20 will not work. Please contact WinSim for a new password if needed (your new password was emailed to the contact person). Your MSS (maintenance, support and service agreement) or PUA (program usage agreement) must be current in order to get a new password. Please note that version 10.23 PSD files cannot be read by version 10.22 or earlier versions of DESIGN II for Windows. However, version 10.23 of DESIGN II for Windows can read all previous version's PSD files.

Graphical User Interface Enhancements V10.23

Added stream mass flowrate to the list of controller variables.

    Enabled the new Exchange data with Spreadsheet to work with Excel 2010 and XLSX files. Added the Visual Basic / C++ / Microsoft Excel VB programming guide to the Help menu. Added support for the new Depressurizer functions for an optional minimum vapor volume fraction of the tank to be vented as vapor only instead of mixed phase, a maximum run time and an optional valve reseat pressure. Added a scrollable edit box for long *.XLS filenames in the 'variables to transfer' set-up dialogs. Added "º" symbol to the temperature units for Celsius.

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