袋式除尘器清灰后除尘空间浓度场分析陈红超

201620、。0.5～2.5m8.3%～41.7%。THEANALYSISOFPARTICLEDISPERSIONINDUSTREMOVALSPACINGAFTERBAGFILTER'SASHCLEANINGChenHongchaoShenHenggenCollegeofEnvironmentalSciencesandEngineeringDonghuaUniversityShanghai201620ChinaAbstractthemathematicalmodelofparticleconcentrationdistributionaroundthefilterbagwasestablishedthroughmomentumconservationequationafterthebagfilter’sashcleaning．thismodelwasappliedtocalculatetheparticledispersionbychangingthesizeofparticle、updraftspeedandbagspacingwithtimevarying．Thecalculationresultsshowthatthefineparticlesarefloatingunderthepocketabout0.5mto2.5m8.3%～41.7%ofbaglengthontheotherhandthecoarseparticlesaresuspendedinthelowerpartoffilterbagspacingthesmallerthebagspacingthehigherthefiltrationconcentrationaswellasthefiltrationspeedthehigherupdraftspeedtheclosertothetopoffilterbagwithparticlesuspendedinfiltrationspacingandtheloweraverageconcentrations．Keywordsbagfilterparticledispersionupdraftspeed1、、、。。、。“”。。2。XY1aX1b。3。Z1Jz=－Ddndz+Cs·n－n·uz129720116293DOI:10.13205/j.hjgc.2011.03.029a—XYb—X1nt=－ΔJz=D2nz2－Csnz+uznz20≤z≤ht＞044.180～150ms。、、。212400g/m2200Pa90%。21。160mm6000mm0.4MPa、100ms、4、200mm。0.10.30.51.01.82.63.44.25.05.8m4.2m3.05kPa15.23kPa1.0m。2、18℃pps1.04m/min0.5g/min95.7g/m31。1Pa/g·m－22004006008001000120010213346698910518152.75g/mL1.04m/min。13Y=2.53×10－5x2+0.05x+9.38R2=0.93120～160℃800～1500Pa140℃634～1057Pa。3423Pa3157g/m2。ΔP≥3kPa390%5%99%240mmnt=359g/m3。2。2/mm/g·m－32204762304112403592503182602844.24。n0|z=0=04u05uz=zhu00≤z≤h508201162936nzz=ht→0=－u'z|z=h67n0|z=0=1278nzz=h=0851d＞1μm。9Jz=nCs－uz=nπσd3pρp－ρg3πudp－uz=nd2pρp－ρg28u－Q－Q1A1－A()29uz=Q－Q1/A1－A2Q———Q1———A1———A2———。9Jz、、、、。、。66.1。dcj17.2μmσ=3.45。333。31μm83.8%。。。1.0m/min。23、4。3/μm/%0～0.576.60.5～1.07.21～512.55～101.4＞102.3343、45s。55s518201162930.3my=1200x0.3～0.5m359g/m31.8m。2.0m12g/m3。0.5～2.5m151129g/m358%、64%。0.5～3.0m5%～50%。55s6.25。200240260mm。65s220240260mm479359284g/m37220mm2.1m240260mm2.1m124129129g/m374%、64%、54%。65s6.30.51.02.0m/min0.671.342.68m/s5s7。772.64m/s2.0m/min37.13g/m30.3～0.7m0.67m/s0.5m/min257g/m30.3～4.0m。0.3～4.0m0.3～1.0m。80.671.342.68m/s0.671.342.68m/s2820116293100201370μm。。87。10.5～2.5m。0.5～3.0m5%～50%。2220240260mm124129129g/m274%、64%、54%。3。。1．D．20[e-mail]2010－08－17櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅36。4CODGB13456—92、。。1FisherR．ProgressinpollutionabatementinEuropeancokemakingindustryJ．IronmakingandSteelmaking1992196449-456．2HJ/T126—2003S．3LungenHansBodo．ThesituationoftheChinesecokemakingindustryJ．StahlundEisen20051251172-74．4NingPBartHJJiangYJetal．TreatmentoforganicpollutantsincokeplantwastewaterbythemethodofultrasonicirradiationcatalyticoxidationandactivatedsludgeJ．SeparationandPurificationTechnology2005412133-139．5．J200927413-16．6．J．20092713-4．7．-J．20082627-29．8．BAFJ．201028413-17．9GB13456—92S．10KanayaNGillBSGroverISetal．ViciafabachromosomalaberrationassaysJ．MutatRes1994310231-247．11．M．1998276-278．12RivettaANegriniNCocucciM．InvolvementofCa2+-calmodulininCd2+toxicityduringtheearlyphasesofradishRaphanussativusL．seedgerm[e-mail]2011－01－303820116293