大型亚临界无烟煤电站锅炉的开发设计

:1999-06-04:(1941-),,,1150046:1001-2060(1999)06-0443-04():300MWNOx,,,,W,NOx,:;;;;:TK2221,,,,,,6200MWHG-670/140-10,,,300MWHG-1021/1812-WM10,19961,212,,12,,,19972HG-1021/1812-WM10,,(MCR),330MW,1021t/h;300MW,911t/h11MW330300t/h1021911()MPa18.217.28540540t/h824.68741.6()MPa3.863.47()MPa3.653.27321.8316.754054027927214(84)199911©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.U,1HG-1021/18.2-WM10,,,,5%(1916MPa),,,,,,,,,,,132211Car%69.1257.0263.01Har%2.83.383.09Nar%0.970.840.91Oar%3.114.83.95Sar%0.341.330.83Aar%17.9921.6419.82War%5.6710.998.33Vdaf%7.0234.1614.5Qnet.arMJ/kg25.521.723.6DT130012001245ST150012501365FT1500132014002,11,3773,,,,,,,,NOxCE,:,,,200MW;,;WR,,,:,;WR4441999©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,;,,,;,,,,,;,;,,NOx,50mg/m3;WR,NOx,NOx;,,,,,,,,,,,,300MW,,300MW,2%,,4,2,,,(),CEWR,,,3,,,,,2,,,,,,,,,NOx,,8,NOx50mg/m3,,54461©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,CEWR,3,,WR,5HG-1021/1812-WM10119961168,212,,,11%,1675kJ/kg,40%50%,,,300MW,42%MCR,,,,300MW,(9117%),89%90%,W,q4:q4=32866AarQnet.ar(Cfhfh100-Cfh+Clzlz100-Clz)Aar,Qnet.ar2/3,,,q42,,,,CfhClz,q4,,,,,,,300MW,,,,,,HG-1021/1812-WM10,,300MW,6HG-1021/1812-WM10,,,,W,NOx,111,1993,(8)121HG-1021/1812-WM101,1994131300MW1300MW600MW,19961()6441999©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Onthebasisofthewaterwallthermodynamictestofa600MWboilerunitandthroughtheuseofafinite2ele2mentanalyticalmethodananalysiswasconductedofthedynamicvariationwithheattransferconditionsofmem2branewaterwalltubewalltemperaturedistributionofalow2circulationratioboiler.Theanalysisaimsatidenti2fyingtheunderlyingbasiccauseofwaterwalltubewalltemperaturefluctuations.Theresultsoftheanalysisshowthatthebasiccauseleadingtothefluctuationsofthewaterwalltubewalltemperatureliesinthedeteriora2tionofin2tubeheattransfer.Inthecourseofaheattransferdeteriorationtakingplaceinsidethetubesofasin2gle2sideheatedwaterwallthetemperaturedifferencebetweenthefire2facingtubeinnerandoutertubewallsur2facehasarelativelysmalltime2dependentfluctuation.However,thewaterwallperipheraltemperaturediffer2encesuffersadrasticfluctuationtriggeredbythewalltemperaturefluctuationsofthefire2facingouterwall.Keywords:waterwall,temperaturefield,finiteelement=Exergy2economicEvaluationofaHeatExchangerPerformance[,]/WuShuangying(ChongqingUniversity)//JournalofEngineeringforThermalEnergy&Power.-1999,14(6).-437440Basedontheexergy2economicanalysisofheatexchangerheattransferandflowprocesstheauthorhascomeupwithaheatexchangerperformanceevaluationindex,theso2calledcriterion,definedasthetotalcostperunitquantityofheattransferred.Furthermore,conductedwastheexergy2economicanalysisandoptimizationofthreetypesofheatexchangers,i.e.,down2flow,cross2flowandcounter2flow.Themethodsemployedandre2sultspresentedinthispapercanserveasaguideduringtheperformanceevaluationofheatexchangers.Keywords:heatexchanger,exergy2economicanalysis,performanceevaluation=DevelopmentandFabricationofaComputer2basedVisualSys2temforThree2dimensionalTemperatureFields[,]/ZhangShishuai,LuoJun,ZhuMaoshu,etal(CentralUniversityofScience&Technology)//JournalofEngineeringforThermalEnergy&Power.-1999,14(6).-441442Describedinthispaperisacomputer2basedvisualsystemforthevisualizationtreatmentofathree2dimensionaltemperaturefieldencounteredinengineeringthermophysicsbytheuseofcomputergraphicandimagetech2niques.Theabove2citedsystemincludesavarietyofmodules,whichareusedforperformingsuchfunctionsasthemodelbuildingofthethree2dimensionaltemperaturefield,colormapping,setting2upofavisualmodel,ex2tractionofasectionalplane,thesettingofvisualangle,etc.ThesystemisdevelopedandrealizedonaWindows95platformwiththehelpofVisualC.Keywords:three2dimensionaltemperaturefield,visualsystem,modelbuilding=TheDesignandDevelopmentofaLarge2sizedAnthracite2firedSub2critical2pressureUtilityBoilerwithaTangentialfiringSystem[,]/ChenJirong,GaoFeng(HarbinBoilerCo.Ltd.)//JournalofEngineeringforThermalEnergy&Power.-1999,14(6).-443446Thepresentpaperdescribesthetechnicalfeaturesandoperationalachievementsofa300MWsubcritical2pres2sure,natural2circulationandanthracite2firedboilerdevelopedanddesignedbyHarbinBoilerCo.Ltd(HBC).Itfocusesonsomeeffectivetechnicalmeasurestakentoensureagoodignition,stablecombustionandthoroughburn2off,astablecombustionwithoutrelyingonoilsupportevenatlowloadsandcompletecombustionoflowvolatilecoalaswellasaslag2freeoperationandareductioninNOxemissions.Withrespecttotheburnerdesignaself2stabilizingcombustiontechnologyincorporatingdoubleprimaryairchanneldevelopedjointlybyHBCandQinghuaUniversityhasbeenadopted.ThisitemoftechnologywasawardedaChinaNationalGoldenPrizeforoutstandingcreativeandinventivepatents.Themarkedflamestabilityatlowloadsandexcellentoverallper2formanceprovidedbytheabove2citedtechnologyhaveadvancedthedesignofhigh2capacityanthracite2firedboil2erstoanewlevel.Suchboilerswithatangentialfiringsystemenjoytheadvantagesoflowsteelconsumption,lowNOxemission,etc.Theirsuccessfuldevelopmenthasblazedanewtrailfortheutilizationoflowvolati