046喷雾除尘技术在宝钢BSSF渣处理装置上的应用研究

20093喷雾除尘技术在宝钢BSSF渣处理装置上的应用研究刘茵,李永谦,肖永力(宝钢研究院,上海201900):对宝钢BSSF钢渣处理装置排放尾气所挟带的粉尘进行了粒径分析,结合并应用湿法除尘机理实施了喷雾除尘净化方案试验表明:常规喷嘴雾化除尘方案在液气比为0.79L/m3时除尘效率波动较大,平均值仅能达到69%;当在烟囱内增设三道高效气雾两相流喷枪后,在液气比为0.84L/m3时,除尘效率提高到94%,尾气中粉尘浓度低于40mg/m3(干),达到了国家的排放标准:渣处理;喷雾除尘;粒径分布;除尘效率:X703:B:1008-0716(2009)03-0021-03ResearchandApplicationofWetScrubberinBSSFSlagTreatmentSystematBaosteelLIUYin,LIYongqianandXIAOYongli(BaosteelResearchInstitute,Shanghai201900,China)Abstract:AschemeforwetscrubberwascarriedoutonthebasisoftheanalyticalresultsoftheparticlesizedistributionofthefluegasfromtheBSSFslagtreatmentsystematBaosteelandthemechanismofwetscrubber.Theresultsshowedthatthededustefficiencyofthesystemwiththecon-ventionalnozzleswasonlyupto69%withtheliquid-gasratio0.79L/m3,whilethededustingeff-iciencyreached94%withthetwo-phasethree-stagejetsprayersinthechimneywhentheliquid-gasratiowas0.84L/m3.Thedustconcentrationincleanedfluegaswaslessthan40mg/m3,whichsatisfiedthenationalemissionstandard.Keywords:slagtreatmen;twetscrubber;particlesizedistribution;dedustefficiency0BSSF,,,,,,,1#[e-mail],,BSSFBSSF1,50mg/m3:,,,,,,(),,,,2120093,,;1,,,1.1BSSF,,110~20min,10~15min2~6m3/h(),68~110,13%~15%,3~6m/s(),400mg/m3()1.2,(),[1]:,10m,100%;,2m100%;0.2m1m,,1m,BSSF1,1,:1m4%;1~2m9%,2m87%,10m56%,,2m100%,87%400mg/m3(),52mg/m3(),图1宝钢BSSF渣处理装置尾气挟带粉尘的粒度分布Fig.1ParticlesizedistributioninthefluegasfromtheBSSFatBaosteel1Table1ParticlesizedistributioninthefluegasfromtheBSSF/m/%1#2#3#/%13.343.333.823.501~210.077.858.938.952~1037.8126.5630.1831.521048.8162.2657.0556.04100.03100.0099.98100.002,,,(2),,,,,,0.80L/m3,12,,,,0.9L/m323,BSSF,,22刘茵等BSSF图2除尘系统布置示意图Fig.2Schematicdiagramofthewetscrubbersystem2Table2Processparametersofthewetscrubbersystem/MPa1.01.001.00/MPa0.600.60/(Lm-3)0.790.84413mg/m3()(185~769mg/m3()),100mg/m3(),1300,BSSF,(),,3图3宝钢BSSF渣处理装置实施除尘前排放尾气粉尘浓度Fig.3Dustconcentrationinthefluegasbeforededusting,0.79L/m3,,4,,53mg/m3(),287mg/m3(),128mg/m3(),69%,6m,,,,0.84L/m3,69%94%,,40mg/m3()(26mg/m3())[1],10m,10m86%,1.5m,,4,,,,,,图4宝钢BSSF渣处理装置除尘后排放浓度和液气比的关系Fig.4Relationshipbetweentheliquid-gasratioandthedustconcentrationinfluegasafterdedusting,,,,,BSSF,,,,,,,;,(下转第46页)232009311,72h,,,()12,,,图11不同冲杯力对钢板耐蚀性的影响Fig.11Effectofdifferentdrawingforcesonthesheetscorrosionresistance3,图12冲杯深度对涂层腐蚀蔓延宽度的影响Fig.12Effectofdrawingdepthonthecoatingswidthspreading,:(1),;(2),;(3),[1].[J].,2000(2):60-63.(:2008-08-18)(上接第23页),,4(1)BSSF,10~600m,2~10m31%,1m4%,(2),,0.79L/m369%(3),0.84L/m3,94%,40mg/m3()[1],,,.[J].,1998,27(1):47-50.(:2009-02-02)46