简介：Thelimestone-gypsumfluegasdesulfurization(FGD)processhasbecomethemostwidespreadprocessintheworldforsulfurremoval.Theswirl-et-absorbingwetlimestone-gypsumsinteringFGDtechnologywasdevelopedforsinteringfluegasdesulfurization,andthisprocessproducesvolumesofwastewaterwithvariouscontaminantsthatrequirestreatmentbeforedisposalorreuse.Inthisstudy,thewastewaterqualityfromthreedifferentsinteringFGDsystemsatBaosteelGroupwasinvestigatedandcomparedwithwastewaterfrompowerplantFGD.AtreatmentprocesswasproposedwhichissuitableforsinteringFGDwastewater.Aftertreatmentwithaneutralization,coagulationandsedimentationprocess,heavymetalsinthesinteringFGDwastewaterwerereducedtoalevelmeetingtherelevantemissionstandards,butthepHandammoniaconcentrationweretoohigh,andafurthertreatmentprocesswasneeded.DuetocertainsimilaritiesandcomplementaritiesbetweensinteringFGDwastewaterandcokingwastewater,itisentirelyfeasibletomixthepretreatedsinteringFGDwastewaterintoabiologicalcokingwastewatertreatmentsystem.ThisstudyindicatesthatitisentirelyfeasibletomixpretreatedsinteringFGDwastewaterintothebiologicaltreatmentsystemsusedforcokingwastewaterfromtheironandsteelindustries.

简介：TheresearchbackgroundandtechnicalfeaturesofBaosteelsinteringfluegasdesulphurization(FGD)—swirl-jet-absorbingwetlimestone-gypsumsinteringFGDtechnology,processandequipmentareintroducedinthispaper.MaincontentsandachievementsofthepilotexperimentandtheengineeringpracticeofBaosteelFGDareanalyzedanddiscussedsystematically.PastengineeringpracticeexperiencesindicatethatBaosteelFGDhasthefollowingmerits:wideapplicabilitytosinteringfluegasfeatures,suchasfrequentlychangingtemperatures,unstableSO2concentration,intensivelyfluctuatingflowrates,etc.,highpollutantsremovalefficiency,lowinvestmentandenergyconsumption;stableandreliableoperation,utilizablebyproduct(gypsum),etc.ItindicatesthatBaosteelsinteringFGDisofextensiveapplicationvaluefortheFGDoflargeandmedium-scaledsinteringmachines.

简介：Becauseofthelowtemperature,largewastegasvolume,highpollutantcontent,andcomplicatedcompositions,wasteheatrecoveryandemissiongastreatmentofsinteringfluegashavealwayspresentedachallengeinthesteelindustry,andthisissuehasattractedwidespreadattentionbothlocallyandabroad.Recently,basedonthefirstdomesticpilotplantanddemonstrationproject,Baosteelhasperformedaseriesofinnovativeresearchanddevelopmentinvestigationsonitssinteringfluegasrecirculating(SFGR)process,inwhichthesystemdesignandoptimization,dioxin-relatedcontaminantsourcesuppression,orematchingstructureoptimization,wear-resistantdesignofcyclingfansandpipelines,high-efficiencydustremovalequipment,systemcontrolandstableoperationstrategy,fluegasmixingandswitchingcontrol,circularhoodsealing,oxygencontentconditioning,recirculationsinteringsystemprocesscontrol,andmodeldevelopmenthavebeenstudied,andacompletesetofequipmentandtechnologyfortheSFGRprocesshasbeeninitiallydeveloped.TheinvestigationresultssuggestthattheSFGRprocesscannotonlysignificantlyreduceexhaustgasvolumeandpollutantemissionsbutalsorecoverlow-temperaturewasteheatandreducetheenergyconsumptionofsintering;therefore,theoveralltechnologiespossessgreatvalueinenergysavings,pollutionemissionreduction,andsinteringorequality/yieldimprovement.

简介：一张有磁力地稳定的使流体化的床(MSFB，？500公里榼？？

简介：Thecharacteristicsofthedesulphurizedgypsumproducedinthefluegasdesulphurization(FGD)processoftheBaosteelsinteringplantareinvestigatedinthisstudy.Accordingtothetechnicalandqualityrequirementsofgypsuminthecementindustry,thefeasibilityofusingdesulphurizedgypsumasacementretarderisalsostudied.Theresultsshowthatdesulphurizedgypsumcanbeusedasacementretarderinsteadofnaturalgypsum.

简介：Themajoraimscombustionengineersallovertheworldarestrivingatareconservationofenergyandallevia-tionofenvironmentalpollution,forwhichthemonitoringandcontrolofthefurnaceprocessareofprimeimportancetoattainanoptimizedconditionofcombustion.Oxygencontentinfluegasisgenerallyusedasanindicatorofwhethertherightamountofcombustionairissupplied.However,itcannotdirectlyreflectthedegreeofperfectionofthecombustionprocesstakingplaceinthefurnace.OntheotherhandCOisaproductofchemicalreactionwhichdirectlyreflectsthe

简介：1GeneraldescriptionLuohuangpowerplantislocated25kmnortheastofChongqingcity,Sichuan,jointlyownedbyHuanengInternationalPowerDevelopmentCompany(HIPDC)andChongqingMunicipal-ityGovernment.Two360MWcoalfiredunitscompletewithFGDsystem,startedconstructioninSeptember1988,werefirstsyn-chronizedinJuneandDecember1991,andunderwentfullloadtestsinSeptember1991andMarch1992respectively.SincethentheunitshavebeenplayingavitalroleincontributingtothepowersupplyofSichuanandChongqing.SouthwestElectricPowerDesignInstituteundertookthe

简介：Themaintechnologiesforreducingfluegasheatlossofpulverizedcoal-firedboilersareintroduced,andthesuitabilityofthesetechnologiesforboileroperationandtheprinciplesforselectionofthesetechnologiesareexplored.Themainconclusionsare:1)thenon-equilibriumcontroloverfluegasflowratesattheinletoftheairheaterandthereversalrotationoftheairheaterrotatorshouldbepopularizedasregulartechnologiesinlargeboilers;2)increasingtheareaoftheairheatertoreducethefluegasheatlossinpulverizedcoal-firedboilersshouldbethetopoptionandincreasingtheareaoftheeconomizerbethenextchoice;3)low-pressureeconomizertechnologycouldsaveenergyunderspecialconditionsandshouldbecomparedwiththetechnologyofincreasingeconomizerareaintermsoftechnicaleconomicswhenthelatterisfeasible;4)thehotprimaryairheaterisonlysuitabletothepulverizingsystemwithalargeamountofcoldairmixed.

简介：对待热的激活的碳(TAC)上的元素的水银俘获用实验室规模被学习固定的床反应堆。TAC的能力被学习在N2和基线气体气氛下面执行Hg0俘获，普通的酸气体成分的效果个别地被评估避免源于多重部件的共存的复杂并发症。结果建议激活的碳(交流)上的功能的组(SFG)是的那表面对当酸气体不在时的Hg0俘获重要。同时，酸气体部件的存在在TAC戏上结合了有缺点的graphitic格子在有效Hg0的一个重要角色俘获。HCl的存在，NO2，并且显著地个别地不由于Hg0的异构的氧化在TAC上在基本气体提高Hg0俘获在有缺点的graphitic格子在TAC上在碳表面和催化作用上创造的酸的地点上。同样，SO2的存在在大约20%改进Hg0俘获。这改进多半在碳表面上由于催化作用由SO2在AC表面和元素的水银的氧化上源于硫组的免职。而且，当酸气体在烟道气体是在场的时，O2在Hg0氧化和俘获上展出synergistic效果。

简介：Thepresentpaperdescribesthestatisticalmodelingandoptimizationofamultistagegas-solidfluidizedbedreactorforthecontrolofhazardouspollutantsinfluegas.Inthiswork,westudythehydrodynamicsofthepressuredropandminimumfluidizationvelocity.Thehydrodynamicsofathree-stagefluidizedbedarethencomparedwiththoseforasingle-stageunit.Itisobservedthatthetotalpressuredropoverallstagesofthethree-stagefluidizedbedislessthanthatofanidenticalsingle-stagesystem.However,theminimumfluidizationvelocityishigherinthesingle-stageunit.Underidenticalconditions,theminimumfluidizationvelocityishighestinthetopbed,andlowestinthebottombed.Thissignifiesthatthebehaviorofsolidschangesfromawell-mixedflowtoaplug-flow,withintermediatebehaviorinthemiddlebed.

简介：Theinfluencesofmagnesiumandferricionsintheirdifferentratiosontherateofgypsumcrystallizationwerestudiedundertheconditionssimilartothoseofwetflue-gasdesulfurization(WFGD).TheresultsshowthatadditionofbothMg2+andFe3+increasedinductiontimeanddecreasedthegrowthefficiencyupto50%comparedwiththebaseline(withoutimpurities)dependingontheconcentrationandthetypeofimpurity.TheeffectsofMg2+andFe3+onthesurfaceenergyandtherateofnucleationwereestimatedbyemployingtheclassicalnucleationtheory.Thesurfaceenergydecreasedby8%and14%withtheadditionof0.02mol/Lmagnesiumorferricions,respectively,comparedtothebaseline.Mg2+andFe3+madethegrowthrateofthe(020),(021)and(040)facesofgypsumcrystalamuchgreaterreduction,whichleadstotheformationofneedlecrystalscomparedtothebaselinewhichfavorstheformationofplateorflakes.Furthermore,anedgedetectionprogramwasdevelopedtoquantifytheeffectsofimpuritiesonthefiltrationrateofgypsumproduct.Theresultsshowthattheinhibitionefficiencyofthepresenceof0.02mol/LMg2+andFe3+onthefiltrationrateofgypsumcrystalrangesfrom22%to39%.

简介：摘要：本系统基于西门子wincc6.0与西门子S7-400系列PLC设计的工程监控系统，成功的实现了烧结烟气脱硫系统的远程控制与上位机监控，满足了生产的工艺要求。该系统投入使用后，运行稳定减排郊果明显。

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