基于AspenPlus的粉煤气化模拟

June2008ChemicalFertilizerDesign46320086基于AspenPlus的粉煤气化模拟,,,,,(,430223):以AspenPlus为模拟工具,选择反应平衡模型,并应用Gibbs自由能最小化方法建立了Shell粉煤气化模型;通过对神华沾化和天碱煤种的气化模拟,对建立的模型进行了检验,结果表明:用N2输送粉煤的气化过程能够很好地模拟,而用CO2输送粉煤的气化过程模拟偏差较大以沾化煤种为例,检验了气化炉散热损失取煤总热值约2%的合理性;研究了不同操作条件下的气化性能,结果表明:提高温度和压力可使气化过程得到强化:AspenPlus软件;粉煤气化;模拟:TQ422.6:A:1004-8901(2008)03-0014-06PulverizedCoalGasificationSimulationBasedonAspenPlusSoftwareZHANGZongfe,iTANGLianying,LUQingyuan,ZhangWeixing,HEZhengzhao,BIDonghuang(ChinaWuhuanChemicalEngineeringCorporation,WuhaiHubei430223China)Abstract:TakingtheAspenPlussoftwareasthesimulationtoo,lbyselectingthereactionbalancemodelandusingtheminimizingmethodoftheGibbsfreeenergytheShellpulverizedcoalgasificationmodelwasestablished;throughthesimulationforthecoalkindsusedintheShenHuaCoalGasificationPlant,ZhangyiChemicalFertilizerPlantandTianjingalkaliplantstheestablishedmodelhasbeeninspected,theresultindicatesthatthegasificationprocessforusingthenitrogengastotransportthepulverizedcoalcanbesmoothlysimulated,butforusingtheCO2gastotransportthepulverizedcoalthesimulationdeviationforgasificationprocessisrelativelybigger.TakingthecoalkindusedinZhangyiChemicalFertilizerplantastheexample,thereasonableness,takingabout2%ofthetotalheatvalueofcoalastheheatdispersalloss,wasinspected;thegasificationpropertyunderdifferentoperatingconditionswasstudied,theresultindicatesthatincreasingthetemperatureandthepressurecanmakethegasificationprocesstobestrengthened.Keywords:AspenPlussoftware;pulverizedcoalgasification;simulation,,,Shell,100mN2CO2,4,1500,,[(CO+H2)90%],900,[1]:,,,;;[2]AspenPlus,,AspenPlus,,AspenPlusAspenPlus,[3-6]AspenPlus,AspenPlusShell,,1,Shell5,Shell[1],:(1983-),,,2006,,,14,+O2CO2+H2O2CO+O2=2CO22H2+O2=2H2OCH4+2O2=CO2+2H2O2C+O2=2CO,,,C+CO2=2COC+H2O=CO+H2CH4+H2O=CO+3H2CH4+CO2=2H2+2COCO2+H2=CO+H2O,,,[2](1)CmHn+(m+n/4)O2=mCO2+(n/2)H2OCmHn+(m/2)O2=mCO+(n/2)H22CO+O2=2CO22H2+O2=2H2OCH4+2O2=2H2O+CO2(2),(O2),C+O2=CO22C+O2=2COC+H2O=H2+COC+2H2O=2H2+CO2(3),,C+CO2=2COC+2H2=CH41/2S2+H2=H2S1/2S2+CO=COS(4),,CO+H2O=H2+CO2CO+3H2=CH4+H2OCO2+4H2=CH4+2H2O2CO+2H2=CH4+CO2H2S+CO=COS+H222:,,;,,,(),,[7]2,,Gibbs,,[8],,Gibbs,,,,[9]3,2Dcomp,RyieldRyield(CSH2N2O2Cl2)(Ash),(QDcomp)BurnDcomp,(UBC)Dcomp2,,(UBC)(Ash)BurnBurnGibbs,Gibbs15第3期AspenPlus,(QLoss)(Ash)1CoalAsh(NC),COH2CO2CH4ArN2H2SCOSH2OO2HClHCN1AspenPlus,,(,),RKSoaveRKSoave,CO2H2SH2,,,RKSoaveAspenPlus,,AspenPlusHCOALGEN,11BoieKirov1.01325105Pa,298.15KDCOALIGT,99.5%,2%4,,,2%4.12,3,29.88MJ/kg,42,wd/%MAVFC173459,wd/%CHNSClO75.074.490.960.420.0112.053/MPa4.04.154.155.05/8080180300/kgs-121.591.517.572.164H2OH2COCO2N2H2S/1.8428.7264.231.24.140.12414501.7828.1364.231.2014.1440.1241421.1:()0.35174.25,6,23.88MJ/kg1550,150075,wd/%,wd/%MAVFCCHNSClO216.333449.774.04.81.61.70.017.96/MPa4.04.04.154.155.05/808080180300/kgs-127.620.952.7420.550.927H2OH2COCO2N2H2S/6.33822.27860.8214.705.2280.44915006.12022.62960.8854.4555.2240.5031500.4:()0.229464.38,9,28.5813MJ/kg,162008年第46卷108,wd/%,wd/%MAVFCCHNSClO112.14245.983.94.780.780.710.0110.239/MPa4.04.154.155.05/8080180300/kgs-123.344.0418.950.7610H2OH2COCO2N2H2S/6.6219.71367.8025.2270.2990.18316004.9221.2169.313.930.2880.1821601:()9.39384.423.88MJ/kg27.62kg/s3600s/h=2374436.16MJ/h,80000MJ/h,3.369%(1)=+=CmT+Hm,C,kJ/kg;m,kg/s;T,;H251kJ/kg(2)C=0.712+0.25110-3(tz1+tz2),tz1,;tz2,50tz1=1500,tz2=50,=1.10105kJ/kg;m=27.62(1-2%)16.3%+0.95=5.36kg/s,T=1500-80=1420,35012.4MJ/h=-=80000MJ/h-35012.4MJ/h=44987.6MJ/h:44987.6MJ/h/2374436.16MJ/h100%=1.895%2%5,5.1,,1111/MPa/()/%H2OH2COCO2CH42.01417.21.74728.24264.4201.1842.07310-23.01419.81.76328.19164.4171.1954.38710-23.51420.61.77328.16164.4151.2015.81310-24.01421.21.78328.12864.4131.2087.39510-211,,,,,,,5.2,,02.0%,1212:,,CO2,COH2;,,CO2H2H2CO2,CO12/%/%H2OH2COCO2/%CO+H2/0.01.8928.1164.561.0494.45516310.51.8728.1365.541.0695.45515891.01.8428.1464.511.0994.38715461.51.8228.14764.481.1394.34415042.01.8028.14864.451.1794.29514625.3,,CO,,,COCO2H2O;,,,COCO22,,,CO17第3期AspenPlusH2CO2H2O,,COH2O,CO2H2[10]:,,,,;,,,,0.8~0.82,3235.4,C+H2O(g)=CO+H2,H2CO;,45,,,CO,,,H2CO2,CO,H2,H2,,,,,;,,,,45CO;H2;CO26(1)AspenPlus,Gibbs,,:N2,CO2(2),:,,COH2,CH4CO2H2O;,,,,,,,;H2,,(H2O);,(3),2%,CO2(下转第26页)182008年第46卷,,,44,(1),,(,1.6t)(2),,,()(3),,3,,,0.5~0.8t()(4)-,,,,(5),,,,99.5%,,(6)2(:ZL-95-1-13028.5:ZL-2004-10022020.5)(7),2010~200kt/a60,100kt/a17,200kt/a620074,100kt/a,4(1),,,,,LPG,(2),:2007-12-24(上接第18页):[1],,,,,.Shell[J].,2002,25(6):381-384.[2].AspenPlus[J].,2006,31(8):10-13.[3],,,.Gibbs[J].,2004,27(4):27-33.[4]AspenTechnology.AspenPlusUserGuide.USA:AspenTechnology,2000.[5]AspenTechnology.AspenPlusPhysicalPropertyMethodsandModels.USA:AspenTechnology,2000.[6]AspenTechnology.AspenPlusGettingStartedSolids.USA:AspenTechnology,2000.[7],,,,.()[J].(),2004,38(10):1361-1366.[8]SMITHWR,MISSENRW.Chemicalreactionequilibriumanalysis:theoryandalgorithms[M].NewYork:Wiley,1982.[9],,,,,.Gibbs[J].,2005,23(2):129-133.[10].[M].:,2001.:2008-03-12262008年第46卷