aspen塔模拟教程Word下载.docx

aspen塔模拟教程Word下载.docx

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DIST

BOTTOMS

ThisexamplewillshowhowtouseRadfraconAspenPlustomodeldistillationcolumns.Thefeedshowninthediagramabovewillconsistof50lbmol/hrofMethanoland50lbmol/hrofwater.Apurityof99.5%isdesiredinboththebottomsanddistillateproductstreamsusingarefluxratioof1.5.

Ifyoudon’tknowhowtologontoAspenPlus,pleaseseethe“GettingStartedonAspenPlus”manual.

ChoosetheTemplateOption

Click“OK.”

Thiswindowallowsyoutoselectaparticularsimulationoption.Forthisexample,selectthe“GeneralwithEnglish

Units”option.Also,make

surethattheoptionintheRunTypeboxdisplays“Flowsheet”

Click“OK”

EachtimeAspenPlusisopenedandanewfileiscreatedoranexistingfileisopenedthisloginwindowappears.

EnterUnixhostfortheservertype,sylvan.che.sdsmt.eduforthenodename,andyourcorrectUsernameandPassword.

Anotherwindowwillappearindicatingtheconnectionwasestablished.

AspenPlusautomaticallyassignslabelstoeverystreamandblock.Toturnthisoptionoff,clickontheToolsmenuinthetoolbarandselectOptions.

IntheOptionswindow,clickonthefoldertablabeled“Flowsheet”.Next,clickontheseboxesunderthe"

StreamandBlocklabels."

Thecheckmarksintheboxesshoulddisappearindicatingthattheseoptionsaredisabled.

Click'

OK'

whenthrough.

Tostartthesimulation,clickontheColumnstabfoundintheselectionofpiecesofequipment.GotothedownarrowtotherightoftheRadFracselection.ClickonFract1,thesecondpicturefromtheleftinthetoprow.Next,movethecursor

intothewhiteareaandclickonthedesiredpositionforthecolumn.Apromptshouldappear

askingtoinputtheblock

ID,forthisexample“Dist”

waschosen.

TheFeed,DistillandBottomsstreamsneedtobecreated.

Tocreatethestreams,firstclickonthe“Material

Streams”boxatthe

bottomleftcornerofthewindow.Redandbluearrowsappeararoundthecolumn.

Aredarrowsignifies

astreamthatisrequiredforadesignspecification;

bluearrowssignifyanoptionalstream.

Clickontheredarrowontheleftsideofthecolumntoaddyourfeedstream.Forthissimulationthere

isonlyonefeedstream,ifthereweremorefeedstreamsusethebluearrowontheleftofthecolumntoaddmorestreams.

Enter“Feed”intheIDboxwhenpromptedforthissimulation.

Wenextneedtoaddtheproductstreams.Onlyoneoftheredarrowsneedstobechosenatthetopofthecolumn.Chosethebottomofthetworedarrowsatthetopofthecolumn.Thiscolumnwillhaveatotalcondenserandthereforeliquiddistillate.Label

thetopproductstream

“Distill”.

Nextaddthebottomproductstreamusingtheredarrow.Labeltheproduct“Bottoms”.

Allthenecessarystreamshavebeenaddedandnumericaldatacannowbeentered.

Nowwearereadytobeginenteringthenecessarynumericaldata.

Clickonthe“Next”buttontobeginenteringthedata.Thisbuttonisblueandislocatedinthetoolbaratthetopofthewindow.

Click“OK”.

Ifthisboxdoesn’tappearitisbecauseyourflowsheetisn’tcomplete.Aboxwillthenappeartellingyouwhatpartoftheflowsheetyouaremissing.

Thisboxshouldappearandatitleforthissimulationcannowbeenteredalthoughisnotmandatoryforthissimulation.ClickontheNextbuttontocontinueenteringnumericaldata.

Ifthisboxdoesn’tappearyoucangotoSetupontheleft-handsideoftheboxandclickonthat.

TheComponentsboxwillbethenexttoappear.Thisallowsustoenterallofthecomponentsthatwillbepresentwithinoursystem;

inthissimulationtheywillbeMethanolandWater.

Type“Methanol”underthecolumn“ComponentID”andpresstheEnterkey.

AspenPluswillnowsearchits

databaseandattempttomatchachemicalname

withtheComponentIDthatwasentered.If

thishappenstheotherthreeboxes（Type,ComponentName,andFormula）willfillautomaticallyandothercomponentscanthenbeentered.

Enter“Water”inthesecondrowunder“ComponentID”andhitEnterto

filltheotherthree

boxes.Wenowhaveenteredallthecomponentsnecessaryforthissimulation.Hit

the“Next”button

toproceed.

ThenextscreentoappearisthePropertySpecificationssheet.ThisallowsustochoosethebasemethodthatwewanttouseforthecalculationsAspenPluswillperform.WewillselectNRTLforthissimulation.

Click“Next.”

Thenextscreentoappearwillshowtheinteractionparametersforthecomponentsinoursystemusingthebasemethodweselected.Ifyouarehappywiththisnumbers（andwesurehopeyouare）click“Next.”

Apromptscreenwillappearaskingifwewanttoenteranymoredataorchangethepropertyspecifications.

Sinceevery