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烧结厂转运点高浓度粉尘的吸尘罩捕收规律 被引量:2

Collecting Rules of High Concentration Dust in Sintering Transfer Station by Exhaust Hood
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摘要 通过对烧结厂皮带机转运点扬尘理化特性、吸尘罩内粉尘流、抽风参数与所捕收粉尘粒度与质量变化规律等的研究,探讨了吸尘罩对高浓度粉尘的捕收规律.结果表明,该处扬尘浓度大于3000mg/m^3,真密度为4.040g/cm^3,球形度为0.51-0.93,TFe和CaO的总含量高达62%-64%(Cω).随抽气速度增大,吸尘罩内粉尘浓度逐渐升高,抽吸气流的捕尘作用逐渐取代诱导气流的扬尘作用,当抽气量增加到一定值后,抽吸气流开始激发附着在料床上静止的粉尘.随抽气速度增大,吸尘罩所捕收粉尘的总质量和最大粒度不断增大,呼吸性粉尘量大幅降低.为避免大量激发料床上静止的粉尘,吸尘罩的经济抽风速度应不高于9.20m/s,捕收的粉尘颗粒小于112.62μm的占97%. Dust emission in sintering ore transfer station of belt conveyor is chosen to determine its physical and chemistry property, observe the dust flow in exhaust hood, and study the relation between the granularity or total quantity of collected dust and the suction parameters for obtaining the collecting rules of high concentration dust with exhaust hood. The result indicates that the concentration of emission dust is more than 3 000 mg/m3, its true density 4.040 g/cm3, and particle sphericity 0.51-0.93, and the content of total-iron (TFe) and calcium oxide (CaO) reaches 62%-64%. With increasing of suction velocity, the dust concentration in exhaust hood rises gradually, and the dust emission processing aroused by induced air is replaced by collecting processing of suction flow. When the suction airflow increases to a certain value, it has an effect on raising motionless dust attached on materials bed. With rising of suction velocity, the total quantity and maximum granularity of collected dust increase. But, the ratio of respirable dust is obviously reduced. In order to avoid a large amount of dust being blown away from material bed, the energy-saving suction velocity should not exceed 9.20 m/s. And the sizes of 97% particles in all collected dust should be less than 112.62 μm.
出处 《过程工程学报》 CAS CSCD 北大核心 2014年第1期90-95,共6页 The Chinese Journal of Process Engineering
基金 国家重点基础研究发展计划(973)基金资助项目(编号:2012CB214900)
关键词 烧结矿 转运点 高浓度粉尘 吸尘罩 粉尘捕收 sintering ore conveyor transfer station high concentration dust exhaust hood dust collecting
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参考文献16

  • 1Eckhoff R K. Current Status and Expected Future Trends in Dust Explosion Research[J].JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES,2005,(02):225-237.
  • 2Petavratzi E,Kingman S,Lowndes I. Particulates from Mining Operations:A Review of Sources,Effects and Regulations[J].Minerals Engineering,2005,(12):1183-1199.
  • 3Peukert W,Wadenpohl C. Industrial Separation of Fine Particles with Difficult Dust Properties[J].Powder Technology,2001,(01):136-148.
  • 4张桂芹,刘泽常,王兆军,齐磊,王磊.物料下落过程中可吸入颗粒物产生特性及控制技术[J].环境工程学报,2007,1(2):82-87. 被引量:7
  • 5张桂芹,刘泽常,李敏,Wilhelm Hoeflinger,Gerd Mauschitz.工业粉体下落过程粉尘排放特性的实验研究[J].环境科学与技术,2006,29(11):3-4. 被引量:6
  • 6Faschingleitner J,H(o)flinger W. Evaluation of Primary and Secondary Fugitive Dust Suppression Methods Using Enclosed Water Spraying Systems at Bulk Solids Handling[J].Advances in Polymer Technology,2011,(02):236-244.
  • 7Wypych P,Cook D,Cooper P. Controlling Dust Emissions and Explosion Hazards in Powder Handling Plants[J].Chemical Engineering Progress,2005,(03):323-326.
  • 8Ansart R,Letourneau J,Ryck A. Dust Emission by Powder Handling:Influence of the Hopper Outlet on the Dust Plume[J].Powder Technology,2011,(02):418-424.
  • 9Ansart R,Ryck A,Dodds J A. Dust Emission in Powder Handling:Free Falling Particle Plume Characterization[J].CHEMICAL ENGINEERING JOURNAL,2009,(04):415-420.
  • 10Chen X L,Wheeler C A,Donohue T J. Evaluation of Dust Emissions from Conveyor Transfer Chutes Using Experimental and CFD Simulation[J].International Journal of Mineral Processing,2012,(01):101-108.

二级参考文献22

  • 1周涛,杨瑞昌,赵磊.层流环形通道热泳脱除可吸入颗粒物技术研究[J].环境工程,2005,23(1):33-35. 被引量:2
  • 2陈砚雄,冯万静.钢铁企业粉尘的综合处理与利用[J].烧结球团,2005,30(5):42-46. 被引量:47
  • 3张殿伟,郭培民,赵沛.现代炼铁技术进展[J].钢铁钒钛,2006,27(2):26-32. 被引量:23
  • 4[1]Chow J.C.Welcome to a special issue on PM2.5:A fine particle standard.J.Air & Waste Manage.Assoc.,1999,49:112 ~ 117
  • 5[2]Marcazzan G.M.,Ceriani M.,Valli G.,et al.Source apportionment of PM10 and PM2.5 in Milan (Italy) using receptor modelling.The Science of the Total Environment,2003,317:137 ~ 147
  • 6[5]Christoph Hueglin,Robert Gehrig,Urs Baltensperger,et al.Chemical characterization of PM2.5,PM10 and coarse particles at urban,near-city and rural sites in Switzerland.Atmospheric Environment,2005,39:637 ~ 651
  • 7[7]Plinke M.D.,Leith,D.Holstein,M.G.Boundy.Experimental examination of factors that affect dust generation.Am.Ind.Hyg.Assoc.J.,1991,52:521 ~ 528
  • 8[8]Heitbrink W.A.,Baron P.A.,Willeke K.An investigation of dust generation by free falling powders.Am.Ind.Hyg.Assoc.J.,1992,53:617~624
  • 9N.N.WHO,Geneva:Guidelines for Air Quality[S].1999.
  • 10Chow J C,Watson J G,Houck J E,et al.A laboratory resuspension chamber to measure fugitive dust size distributions and chemical compositions[J].Atmosphere Environment,1994,28(21):3463-3481.

共引文献78

同被引文献27

  • 1陈泽,董旭东,卞涛,刘建宇.采煤工作面职业病危害防治研究[J].煤炭工程,2022,54(S01):230-234. 被引量:8
  • 2赵永岭,刘泽勤,赵敬华,王亚南,孙尔雁,姜胜磊.微粒羽流自由降落过程特性的探讨[J].郑州大学学报(工学版),2007,28(3):69-72. 被引量:3
  • 3马云东,罗根华,郭昭华.转载点粉尘颗粒扩散运动规律的数值模拟[J].安全与环境学报,2006,6(2):16-18. 被引量:29
  • 4张桂芹,刘泽常,李敏,Wilhelm Hoeflinger,Gerd Mauschitz.工业粉体下落过程粉尘排放特性的实验研究[J].环境科学与技术,2006,29(11):3-4. 被引量:6
  • 5HEMEON W D L. Plant and Process Ventilation [M], New York,USA: Industrial Press, 1963: 45—48.
  • 6MORRISON J N. Controlling dust emissions at belt conveyortransfer points [J]. Trims AIME, 1971, 250(1): 47.
  • 7AMOS U, ABRAHAM D. Exhaust volume model for dustemission control of belt conveyor transfer points [J]. PowderTechnology, 1998,96(2): 139—147.
  • 8PETER W, DAVE C, PAUL C. Controlling dust emissions andexplosion hazards in powder handling plants [J]. ChemicalEngineering and Processing, 2005, 44: 323—326.
  • 9LI Xiao-chuan, LI Qiang, ZHANG Dong, et al. Model forinduced airflow velocity of falling materials in semi-closedtransfer station based on similitude theory [J]. Advanced PowderTechnology, 2014, 211(2): 139—147.
  • 10CHEN X L,WHEELER C A, DONOHUE T J. Evaluation ofdust emissions from conveyor transfer chutes using experimentaland CFD simulation [J]. International Journal of MineralProcessing, 2013, 110/111(6): 101-108.

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