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    Modeling PetroleumProcesses

    S T E A D Y S T A T E S I M U L A T I O N

    10

    AspenTec

    AspenPlus 7

    Vers

    ion

    GETTING STARTED

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    COP YRIG H T 19811999 Aspen Techn ology, In c.ALL RIG HTS RE SE RVED

    The flows heet g ra phics an d plot component s of Aspen P lus w ere developed by MY-Tech, Inc.

    Aspen Aerotran,Aspen Pinch

    ,ADVENT

    ,Aspen B -J AC

    ,Aspen Custom Modeler

    ,Aspen

    Dynamics,Aspen H etra n

    ,Aspen P lus

    , Aspen Tech

    , B -J AC

    ,BioPr ocess Simula tor (B P S)

    ,

    DynaP lus

    , ModelManager

    , Plantelligence

    , the P lan telligence logo

    , Polymers Plus, Properties

    Plus, S P E E D U P

    , an d the a spen leaf logo

    a re either registered tra demarks, or tra demarks of Aspen

    Technology, I nc., in th e U nited St a tes a nd/or other countries.

    BATCHFRACa nd R ATEF RAC

    a re tra demarks of Koch E ngineering Company, Inc.

    Activat or is a tra demark of Softw ar e Security, Inc.

    Rainbow SentinelSuperPro

    is a tr a dema rk of Rainbow Technologies, Inc.

    la n License Man ager is a tra demark of lan C omputer G roup, Inc., Mounta in View , Ca lifornia , U SA.

    Microsoft Windows, Window s NT, Windows 95 a nd Windows 98 are either registered t ra dema rks ortr a dema rks of Microsoft Corpora tion in the U nited S ta tes a nd/or other countries.

    All other bra nd a nd product n am es are t ra demarks or registered tra demarks of their respectivecompanies.

    The License Mana ger portion of this product is ba sed on:

    la n License Mana ger

    1989-1997 lan Computer G roup, Inc.All right s r eserved

    U se of Aspen P lus a nd This Ma nua l

    This ma nua l is intended a s a g uide to using Aspen Plus process modeling softw a re. This documenta tion conta ins

    AspenTech proprietar y a nd confidential informat ion and ma y not be disclosed, used, or copied wit hout t he prior

    consent of AspenTech or a s set forth in the a pplicable license agr eement. U sers a re solely responsible for t he

    proper use of Aspen P lus a nd t he application of the results obta ined.

    Although AspenTech has tested the software and reviewed the documentation, the sole warranty for Aspen Plus

    ma y be found in the a pplica ble license a greement betw een AspenTech a nd t he user. ASPENTECH MAKES NO

    WARRANTY OR REPRESENTATION, EITHER EXPRESS OR IMPLIED, WITH RESPECT TO THIS

    DOCUMENTATION, ITS QUALITY, PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR A

    PARTICULAR PURPOSE.

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    Modeling P et roleum P rocesses iiVersion 10.1-0

    Contents

    About This Manual

    Modeling P etroleum P rocesses wit h Aspen P lus ............................................................v

    Sessions in this B ook .......................................................................................................vi

    U sing B ackup Files..........................................................................................................vi

    For More Informa tion .....................................................................................................vii

    Technical Support ......................................................................................................... viii

    1 Blending Crude and Petroleum Fractions

    P etroleum P rocess Flowsheet ........................................................................................1-2

    St ar ting Aspen P lus.......................................................................................................1-4

    Specifying Title an d G lobal Options .............................................................................1-5

    Specifyin g Component s ................. .................. .................. .................. .................. ........1-7

    En tering Assa y Da ta .....................................................................................................1-9

    B lendin g th e Oils ................ .................. ................... .................. .................. ................ 1-16

    G enerat ing P seudocomponents ...................................................................................1-18

    Runn ing the Simu lat ion ..............................................................................................1-20

    Examining Results.......................................................................................................1-21

    P lotting Dist illat ion Cur ves ........................................................................................1-23

    Creating a Backup File.................................................................................................1-29Exit ing Aspen P lus ................ ................... .................. .................. .................. .............. 1-30

    2 Adding a Preflash Tower

    P reflash Tower Flowsh eet .............................................................................................2-2

    St ar ting Aspen P lus.......................................................................................................2-3

    Opening a n Exist ing Run ..............................................................................................2-4

    Sa ving a Run Un der a New Na me................................................................................2-5

    Ch a nging the Run Type ................................................................................................2-6

    Selecting a Dist illat ion Model .......................................................................................2-7

    Defining t he G ra phical Simu lat ion Flow sheet ............................................................2-8

    Specifying Properties...................................................................................................2-11

    En tering St ream Da ta .................................................................................................2-13

    Specifying the P reflash U nit .......................................................................................2-15

    Modifying Pseudocomponents.....................................................................................2-20

    Runn ing the Simu lat ion ..............................................................................................2-22

    Exa mining Sim ulat ion Results ...................................................................................2-23

    Exit ing Aspen P lus ................ ................... .................. .................. .................. .............. 2-29

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    iv Modeling P et roleum P rocesseVersion 10.1-

    3 Adding an Atmospheric Crude Distillation Unit

    Atm ospheric Cru de D istilla tion U nit Flowsh eet .........................................................3-2

    St a rting Aspen P lus.......................................................................................................3-4

    Opening a n Exist ing Run ..............................................................................................3-5

    Sa ving a Run Un der a New Na me................................................................................3-6Adding t he Cru de Dist illat ion U nit t o the Flowsheet .................................................3-7

    Specifying Steam Feeds to the Tower...........................................................................3-9

    Specifyin g th e Atmospheric Tower ................. .................. .................. .................. ......3-11

    Runn ing the Simu lat ion ..............................................................................................3-24

    Exa mining Simu lat ion Results ...................................................................................3-25

    Exa mining the P roduct St ream s.................................................................................3-27

    P lotting Dist illat ion Cur ves ........................................................................................3-29

    Exit ing Aspen P lus ................ .................. ................... .................. .................. .............. 3-32

    4 Adding A Vacuum Unit

    Vacuum U nit Flowsheet ................................................................................................4-2St a rting Aspen P lus.......................................................................................................4-4

    Opening a n Exist ing Run ..............................................................................................4-5

    Sa ving a Run Un der a New Na me................................................................................4-6

    Adding a Vacuum Tower to the Flowsheet...................................................................4-7

    Specifying the St eam Feed ............................................................................................4-9

    Specifying the Vacuum Un it .......................................................................................4-10

    Runn ing the Simu lat ion ..............................................................................................4-16

    Exa mining Simu lat ion Results ...................................................................................4-17

    P lotting Dist illat ion Cur ves ...........................................