Hitachi的研究动向EnergySystem(能源系统)CombustionTechnologies(燃烧技术)CAEsystemforfurnacedesign(计算机辅助工程应用于炉膛设计)Combustionandfluegastreatmentsystem(燃烧和烟气处理系统)Newpowergenerationsystem(新的发电系统)Coalgasification(煤气化)Materials/Structure(材料/结构)Newheatresistancematerial(新材料的耐热性)Structuralanalysis/residuallifeevaluation(结构分析/剩余寿命评估)Instrumentation/control(仪表/控制)Noiseandvibrationcontrol(噪声和振动控制)Optimalcontrol(最优控制)Sensingtechnology(传感技术)CAEsystemforfurnacedesignSimulationofCombustionandHeatTransfer(燃烧和传热的数值模拟)Hitachihavealsodevelopedahighlyaccuratesimulationmodelforanalysisofcombustion,heattransferandwater/steamcharacteristicsinaboiler.(日立公司还开发了一个高度精确的仿真模型用于分析燃烧,传热和锅炉中的水/蒸汽特性。)Methodofcalculation(计算方法)Turbulentflow(湍流)k-εmodel,3Dcalculation(k-ε模型,3维计算)SIMPLEmethod(Semi-ImplicitMethodforPressureLinkedEquations)(半隐式方法求解压力方程组)Radiation(辐射)DT(DiscreteTransfer)method(DT模型,离散项)Combustion(gasphase)(燃烧,气相)Eddydissipationmodel(majorspecies)(涡扩散,主要种类)Steadystateassumption(nitrogenspecies,XN)(稳态假设,含氮成分)Equilibriumassumption(radicals)(平衡假设,自由基)Combustion(solidphase)(燃烧,固相)Twocompetingreactionsmodel(pyrolysis)(双竞争反应模型,热解)Reactionanddiffusioncontrol(heterogeneousreaction)(反应与扩散控制模型,非均相反应)Conclusion(结论)1.ASimplifiedNOxreactionmodelwasdevelopedforanalyzingcombustionperformancesofutilityboilers.(一种氮氧化物反应的简化模型被发展用于分析电站锅炉燃烧性能。)2.Themodelexpressedlow-NOxcombustionperformancesofutilityboilers.(该模型反映了电站锅炉低氮氧化物燃烧性能。)3.Optimumcombustionsystemcanbeproposedbasedonthisanalysiscombiningourlow-NOxburners.(优化燃烧系统,并以此此基础上提出我们的低氮氧化物燃烧器。)Usingtheseadvancedcombustionmodelingtechniqueswecananalyzethecurrentoperatingconditions,reviewresultsandproposeoptimalsolutionsbaseduponactualoperatingparameters.(利用这些先进的燃烧建模技术,我们可以分析当前操作条件,审查结果和建议后,根据实际操作参数提出最佳解决方案。)EnvironmentalSystem(环境系统)Incinerator(焚烧炉)Fluidizedbedincinerator(流化床)Refusederivedfuel(垃圾衍生燃料)Fluidizedbedthermaldecompositiongasificationfusionsystem(流化床热解气化系统)Resourcerecycle(资源回收)Ashmeltingfurnace(灰熔融炉)Recycleplaza,arecyclecenter(回收广场,回收中心)Voluminoustrashtreatmentarrangement(大量医疗垃圾处置)GlasspotautocolorscreeningapparatusPlasticwastetopowergeneration(塑料垃圾发电)Cleanpowergeneration(清洁发电)Wasteheatboiler(余热锅炉)LowNOxburner(低NOx燃烧器)Environmentalprotection-gaspurification(环保-气体净化)Fluegasdesulfurizationsystem(烟气脱硫系统)NOxremovalsystem(脱硝系统)Dioxincrackingcatalyst(二恶英裂化催化剂)Catalystbagfilter(催化剂袋式除尘器)Environmentalservice-environmentconsultant(环境服务-环境顾问)Dioxinanalysisservice(二恶英分析服务)Environmentalservice-analysis/instrumentation(环境服务-分析/仪器)Acousticgasthermometer/flowmeter(声波气体温度计/流量计)Socialenvironmentalprotection(社会环境的保护)Smallarmfireevaluationsystem(小型火灾评价系统)Basictargetpracticesystem(实践体系的基本目标)AppliedtargetpracticesystemAircraftfire-hazardfire-fightingdrillarrangementsystem(飞机火灾危害的消防演习安排制度)日立目前的主要方向还是在其开发的低NOx燃烧器上。LowNOxBurner(低NOx燃烧器)TheHitachiLtd.Groupisacutelyawareoftheneedtorespondtoglobalenvironmentalissuesandthereforededicatesgreatdealofcontinuousprofessionalresearchefforttorealizeimprovementstoitsvariousproductlines.(日立集团有限公司是深刻认识到应对全球性环境问题,因此致力于专业研究的不断努力,以实现改善其各种产品线。)ForpulverizedcoalcombustionwefirstlydevelopedauniqueLow-NOxburnersystem,theHT-NRburner,basedontheconceptofIn-flameNOxreduction.(对于煤粉燃烧我们首先开发了独特的低氮氧化物燃烧器系统,即HT–NR燃烧器,其设计理念就是“减少火焰NOx的排放。”)Thissophisticatedandprovenreliabledesign,togetherwithrecognitionwithintheIndustryofHitachi'scontinuouscontributiontoLowNOxcombustiontechnology,meritedtheprestigiousAwardoftheJSMEMedal(JapanSocietyofMechanicalEngineers)andthePremierPrizefromtheDirector-GeneraloftheEnvironmentalAgency.(这个复杂和成熟可靠的设计,加上日立继续不断的开发低NOx燃烧技术产业,获得“日本机械工程师协会奖”和日本能源署的环境大臣奖励)ContinuationofresearcheffortbyHitachileadtodevelopmentofasecond-generationLow-NOxburner,designatedHT-NR2,withfurtherenhancedNOxdecompositioncapability.(日立继续开展研究工作,开发了第二代低氮氧化物燃烧器HT-NR2,其氮氧化物分解能力进一步增强。)ThewidelyacclaimedHT-NR2burnerhasprovenextremelyreliableandhasmanyapplicationsinboththedomesticandforeignindustrialandpowerboilermarkets.(广受好评的HT-NR2燃烧器已被证明非常可靠,并已在国内和国外的工业和电力锅炉市场中的许多应用。)OngoingdevelopmentworkbyHitachiresultedintheintroductionofathirdgenerationLow-NOxburner,designatedHT-NR3,featuringfurtherreducedNOxemissionlevels,improvedcombustionefficiencyandeaseofmaintenance,developedthroughdesignsimplificationapplication.Thislatestdesignutilizesawiderandshorter,highlystableflameforexcellentfuelcombustioncharacteristicswithextremelyLowNOxlevels.(日立正在进行第三代低氮氧化物燃烧器HT-NR3的开发,它具有进一步减少氮氧化物的排放水平,提高燃烧效率,便于维护,通过设计简化应用开发。这个最新的设计具有更广泛,高度稳定的火焰,具有极为出色的低氮氧化物排放水平的燃烧器。)FeatureandHistory(特征及历史)1.RapidignitionwithFlameStabilizingRing(USPatentNo.4,545,307DatedOct8,85).2.Effectiveseparationofouterairtoproducereducingconditionsinthecenterzone.3.PCconcentrationforhighercombustionefficiencyinreducingconditionEnhancementoftheabovefeatureswasachievedbythedevelopmentindicated.ConceptofIn-FrameNOxReductionComparisonofFlames(比较火焰)Stableandbrilliantflamesareestablishedfromtheedgesoftheburners.AwiderandshorterflameisobtainedintheHT-NR3design,whichrealizesextremelyLowNOxandhighcombustionefficiency.(燃烧器的边缘建立了稳定和灿烂的火焰。在HT-NR3设计中可以得到更宽和更短的火焰,从而实现非常低氮氧化物排放和高燃烧效率。)HT-NRHT-