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1、摇第36卷第7期煤摇摇炭摇摇学摇摇报Vol.36摇No.7摇摇2011年7月JOURNALOFCHINACOALSOCIETYJuly摇2011摇摇摇文章编号:0253-9993(2011)07-1189-06基于ChemCAD的气流床粉煤加压气化工艺参数仿真优化12张进春,侯锦秀(1郾河南理工大学能源科学与工程学院,河南焦作摇454000;2郾河南理工大学安全科学与工程学院,河南焦作摇454000)摘摇要:基于ChemCAD仿真软件,采用Gibbs最小自由能方法作为气化反应模型,建立了Shell粉煤加压气流床气化仿真模型。针对氧煤比、蒸汽煤比和气化压力3个主要工艺参数,安排了3
2、因子3水平的全析因仿真实验,分析了各工艺参数对气化性能的影响。结果表明:氧煤比是影响产气率和粗煤气有效成分的重要因素,同时对消耗指标的亦有显著影响。产气率等效益指标随氧煤比的增加而增加,而消耗指标则随氧煤比的增加而减少;蒸汽煤比可以提高产气率,但主要影响H的含2量,各消耗指标会随着蒸汽煤比的增加而减少;压力对煤气化性能指标影响不显著。进而,采用综合平衡优化方法,对煤气化工艺参数进行了综合优化,以协调各指标间可能的冲突,寻找到一组使各指标尽可能最优工艺参数的组合。关键词:ChemCAD;气流床;煤气化;参数优化中图分类号:TQ546郾2摇摇摇文献标志码:AEntrained鄄flo
3、wpressurizedcoalgasificationsimulationandparametersoptimizationbasedonChemCAD12ZHANGJin鄄chun,HOUJin鄄xiu(1郾SchoolofEnergyScienceandEngineering,HenanPolytechnicUniversity,Jiaozuo摇454000,China;2郾SchoolofSafetyScienceandEngineering,HenanPol鄄ytechnicUniversity,Jiaozuo摇454000,China)Abstract:Thesimu
4、lationmodeloftypicalentrainedflowpressurizedcoalgasification,Shellcoalgasificationprocess,wasfoundedbasedonChemCADsimulationsoftware.TheminimumGibbsfreeenergymethodwasusedasthereactionmodelofthecoalgasification.Inordertoanalysistheeffectofthemainprocessparameters,oxygen鄄coalratio,steam鄄coalra
5、tioandpressure,ontheperformanceofthecoalgasification,fullfactorialsimulationexperimentswerecarriedout.Theresultsshowthattheoxygen鄄coalratioisanimportantfactortothegasproductionrateandthecomponentofthesyngas,andalsoimpactsignificantlytotheconsumingindicatorsofthecoalgasification.Theefficiencyi
6、ndicatorssuchasgasproductionrateincreasewiththeoxygen鄄coalratioincreasing,whiletheconsumptionindicatorsreduce.Thesteam鄄coalratiocanenhancethesyngasproductionrate,butmainlyaffecttheamountofHinthesyngas.The2consumingindicatorsofthecoalgasificationarealsoaffectedbythesteam鄄coalratio.Theeffectofp
7、ressureonthegas鄄ificationperformanceisnotsignificant.Then,anintegratedbalancedoptimizationmethodwasputforwardtooptimizetheparametersbasedonthemethodofmaineffectanalysisandrangeanalysis.Thismethodcanfindasetofprocessparameterstooptimizeallthei
