利用aspenplus进行物性参数的估算讲解

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1纯组分物性常数的估算1.1、乙基2-乙氧基乙醇物性的输入由于Aspen Plus软件自带的物性数据库中很难查乙基2-乙氧基乙醇的物性参数, 使模拟分离、确定工艺条件的过程中遇到困难,所以采用物性估算的功能对乙基2-乙氧基乙醇计算。

已知:最简式:(C6H4O)分子式:(CH>CH-O-CH-CH-O-CH-CH-OH)沸点:195C1.2、具体模拟计算过程乙基2-乙氧基乙醇为非库组分,其临界温度、临界压力、临界体积和临界压缩因子及理想状态的标准吉布斯自由能、标准吉生成热、蒸汽压、偏心因子等一些参数都很难查询到,根据的已知标准沸点TB,可以使用aspen plus软件的Estimation In put Pure Component(估计输入纯组分)对纯组分物性的这些参数进行估计。

为估计纯组分物性参数,则需1.在Data (数据)菜单中选择Properties(性质)2.在Data Browser Menu(数据浏览菜单)左屏选择Estimation(估计)然后选Input(输入)3.在Setup(设置)表中选择Estimation(估计)选项,Identifying Parameters to be Estimated(识别估计参数)4.单击Pure Component(纯组分)页5.在Pure Component页中选择要用Parameter(参数)列表框估计的参数6.在Component(组分)列表框中选择要估计所选物性的组分如果要为多组分估计选择物性可单独选择附加组分或选择 All (所有)估计所有组分的物性7. 在每个组分的Method (方法)列表框中选择要使用的估计方法可以规定一个以上 的方法。

具体操作过程如下:1打开一个新的运行,点击 Date/Setup Pl 'I Setup Specifications ■ Data BrowserInput Complete 2、在 Setup/Specifications-Global 页上改变 Run Type 位 property Estimation 母 Special ions <<]|A T "71 »\ ol^l N*|iet 990口岂©©co 岂」1「i ra-fr “ Q EL Specifications Simulation Options Stream Class Substreams Units-Sets Custom Units Report Options - .. r Properties Streams Blocks Reactions 匚onvergm 匚耳 Flowsheeting Options Medel Analysis Tools EO Configuratfon^/Global ^Descriptioini | Accounting | Diagnodics |Tsit tc M e-ack 匚n 丄 ct r sport ■file. E'ilp.r 3 <■!■>! <<IRT T] »| Q |^| N >|fl*w £#r th*Jnput Complete3、在 Components-specifications Selection 页上输入乙基 2-乙氧基乙醇组分,将其 Component ID 为 DIMER4、在 Properties/Molecular Structure -Object Manager 上,选择 DIMER ,然后点 EditSetupComponent'sPropertiesFlowsheeting OptionsResults Summary /Global p/De«iiptiQn | Title: Accouning | Diagnostics | I 纯组分物性墾教的店尊 U nits of rneaswement METCB^j- 荷匚吐▼ Global settingsRun t^pe;Pioperty Estimahon zi Input mockS 柜 ady-State 创 Stream class: CONVEHJ Ffcw basis: |MoleA Ambient pressure: d Ambient temp.: 师 |Fd Valid phases: 厂 Use free water calculationsSetupInput dais : Output resdts:5、在Gage neral 页上输入乙基2-乙氧基乙醇的分子结构圧卜讷叩 匡岂 Components B- Vj Properties 二|Property Methods 由岂 E^timabori B-圉 Molecular Stryrture & DIMER 由 V Parameters 口 Data] ffi-T l Advanced 匡二 A owsheeting Options 匡•划 Results Summary Atom number: atom hype 匚口irKpctidercBAtom number 1 2 3 q 5 5 7Alam 卯e c c 0 c c 0 c4pn;富“ Tnaber i£entiry:x< an in the nLe^vle. Xc^tn. FK E viLl 占】.印:町the trpe ar Kt ^as enttrsd Input Complete6、转到Properties/Parameters/PureComponent Object Managet ,点击“ NEW ”® DIMER耳如m ■州圧•书时叩 吁岂Components B 剧Propetlies Property MethodsEstimabonMolecular StryrtureParameters 日刘 PureCj&mponentResulte Not Available -^Propertes ProjMrty Methods ・ Data BrokerJ Prepay Metlwds 三砺I till« — 」时 | I |工令TB母二j Binary Interaction□ Electrolyte PairH 口 Electrolyte Temary■Jj UNIFAC Group口 UNIFAC Group BinaryResults£j Dau 庄…二]Advanced 吁二I Flowsheeting Options £ 口 Re-suhs Su mmaiy Slalus匸亠 RewalNew... FuidimalGioip | FcrmJa | ShwclureAtenfl AliOffnS 8i«'dNumberTjps Number Type ■C2 c Single tend2 C3 0 Single bond2 Q ■1 cSingle band4C 5 c Single bond 5 C B Q Single bandB 0 7 c Sing letond 7 c B c Single bandBc 9 0 Single bondDelire- mdecule iU connedivilii然后创建一个标量(Scalar )参数TBResults Nat Available 、输入DIMER 的标准沸点(TB ) 195C Obiect manager Mame T^pe I 3 二j PircComponert New Pure Component Parameters u v Edt Hide 2d 也岂“:甲由:B . I . ........ 1!.:■田. Setup Comportents Propertits 二| PtQ^erty Methods 卤 Estimation型 Mdecular Structure'| Parameters2j Pure Component 田••二j Binary Interaction二| ElBctrolyte Pair :—二| Electrolyte- Terna ry 二 UNUFAC Group •二 UNIFAC Group Binary 由 l | Results 口 Data •二j Advanced Flowsheet] ng Options Results SumiTiflry广 esrrela i H >:>ILCOILV«ILl:L OHEll lltlfl-r HAST IlBdTiA or «CC<pi Properties Parameters Pure ComponentTB - Data Browser 口 |E |QTB 日 包币 |ENG 73 ^1^1 AH 弓 >〉| 口匸 | 附|M a '-a 田;由. Setup Components Properties h ] Property Methods / Estimation Molecular Structure = 0 TB s Binary Interaction 匚 E ettrolyte Pair r — Elert no lyte Ternary : UNIFAC Group ;■■■■□ UNIFAC Group Binary 0-0 ResuKs Pa r-a meters |-岂 Pu re Component /input Parameters Unite Data Component Componsml : DIMER - T TB C 1 195 Ftire component scalar par^neters a 申“口 io•…口 Oats Jj Advanced Flows heating OptionsResults SummaryInput CompleteInput Complete9、运行该估算,并检查其结果。

估算结果自动写入到窗体文件中r -------------------------------------------------------------------------------------茁 Properties Estimation Results - Data Browser<>|^| «|[A F ~2] »| 蛋 N >8、然后转至U Properties/Estimation/Set up 页上,选择 Estimation all missing Parameters ◎ InpiJt>1^1 «||A T ~~H »I Lilial H *| 3“也& —i 由.1口 -------------- I ...... ---------- - 5rtLip Cnmpcnents Properties 口 Property Methods 5 E^tirmatiom ® input h & Compare | | Results | | Compare Results i/j Mlolecul^r Structure Parameters 口 Data 二I AdvancedFlowsheeting Option 弓 Results Summary'/Setup Pune Component | T-Dependent j Binaiy j UNIFAC Droup 口口面幅 C Do not estanate ar^ paiameters 冷E 囲!皿迦匹(.西[更啓邑该 C Eslimate only the selected parameters i- Parameter ®pag F" Pue component scalar parameters 時 Rue comporveilt lempsalure-dependerit propaty cocr^alion paraneteis |7 Binaiy interaction parameters 硬UNI FA 匚jgioup p 吕旧e 風初占Reajlrs S 12 1-Setup Compcriien Properties 二I Property Methods 1^1 Estirriatiori ❸ Input :-iQj Corriipare {S| Results 囚 Compare Results 划 Mioleculair Stmcture Parameters 二| Data 二I Advanced FI QW ^ heeting Options Rei-Lilti- Summary f7\] Run Status Pure Componenl T -Dependerit | Binary | UNIFAC Group | Properly Nlaffne Parameter EstimatedvalueUnit-s Method MOLECULAR WEIGHT MW1341753& FOHMULA CRITICAL TEMPERATURE TC627.594188 K JOBACK — CRITICAL PRESSUREPC 3318194.71 N/SQM JOBACK CRITICAL VOLUME杞 0.4285 CUM/KMOL JOBACK CPITICALCOMFflES.RACzc 0.271214S2 EFIN IT I IDEAL GAS CP AT 900 K1775U4.90G J/KMOLK BENSON AT 500 K2G4294.092 KMOLK BENSON ATIOKK38G292.527 VKMDL-K BENSON STD. HT.DFFORMATIONDHFORM ■564638000 J<MDL BENSON SID FREE ENERGY FORMUGFORM ■347160000 JnKMaL JOGACK VAPOR PRESSURE AT IB1D131E723 N/SQM RIEDEL AT 0屮T 匚 1000313.9Q N/SQMR I EO EL ATTC 331818471N/SQM RIEDEL ACEfJTFtlC F^JCTDF ; OMEGA 0 52834051DEFINITIHEATOFVAPAT TB DHVLB 537QB7141 J/KMDL DEFIHITI -Component: [DIMLR 三j 卜 annuls |C6H14O3其模拟结果如下:2与温度相关的纯组分物性参数的估算利用aspe n pluS 寸乙基2-乙氧基乙醇与温度相关的纯组分物性参数的估算,过程与纯 组分物性参数的估算过程一样,只是在过程中选择Estimation In put T-Depe nde nt 估计输入 受温度影响参数),计算受温度影响的物性的参数。