煤粉锅炉风粉两相流在线监测技术研究

上海交通大学硕士学位论文煤粉锅炉风粉两相流在线监测技术研究姓名：杨向东申请学位级别：硕士专业：动力工程指导教师：陈汉平;马骏驰20071101III#12IVABSTRACTThisarticlestudieslasermeasurementtechnologyinthetwo-phaseflowofthecoal-firedpowerplantbioleronceWindpowderpulverizedcoalboileron-linemeasurementoftwo-phaseflowapplications,on-linemeasurementdevicesmadethesystemdesign,sitedevelopmentenvironmentandpollutioncontrolprobeplugphenomenasuchasadaptationtechnology.Windpowdermadefromtwo-phaseflow-measuringdeviceinthecountry,aftertheJianbiPowerPlant#12furnaceengineeringtestconducted.Testsshowthatthedevicehasapulverizedcoalfineness,concentration,speedandvolumeofpowdersuchassolidphaseparametersofanumberofon-linemonitoringfunction,themeasurementresultssuperiortothetraditionalmethod,theinformationderivedfromtheplantmillingoperationcontrolsystemequipmentguidesignificance.Realizedcoalfineness,concentration,speedandreal-timemonitoringofpowder.Keywords:two-phaseflow;Turbidimetry;coalparticlecoalconcentration,coalspeed11.1QWmg/m3212H31-11-1[4]1231212312331.2400[5]TurbidimetryExtinctionFaradayTyndall4.X[123]31.35#12330MW12362.12.1I0-dl=Idl2-12.1Fig.2.1TheSchematicsofExitinction7L2-1-⌡⌠II01/IdI=⌡⌠L0dl2-2I=I0exp-L2-32-3Beer-LambertNDMonodispersion=NKext=4ND2Kext2-4KextExtinctionCoefficientDmm=-iMieKext2-42-3lnI/I0=4ND2KextL2-5=4⌡⌠baNDD2KextdD2-62-3lnI/I0=4L⌡⌠baNDD2KextdD2-7abND2-52-7II0Lm8NDCv=6⌡⌠baNDD3dD2-72.2Beer-Lambert2-8I/I0=exp-4LND2KextmD2-82.2ALAL2-8I/I0=exp-4AnND2KextmD2-9nAD2.2Fig.2.2TheSchematicsofcoalparticlemeasurement9IAAIS1S=S1/AS1poissionI2-102-11[7]=I0e-=I0e-l2-10=2=I02=/N/S2-11=nS1KextmDN=nl=2e-2⌡⌠0d2-12=sinexp-sinT-12-13=D/,:S1=2I02(AE)2-14N=LAE2-152-102-1510S1N113.1I0I3.10.6328m10mmBeer-LambertI,A/D3.1Fig.3.1TheSchematicsofcoalparticlemeasurementDevice12123.1.1(1)IICD2-102-15I0II0IAmm2LmmS1Nmm/mm3(2)3-13-274m9m[8]3-174m123456m67.176.774.370.268.476.31/cm31474699971220209036903-29m123456m9.38.79.210.411.312.91031/cm3151.5284.4393.2384.4382.3347.413(3)Ggfm2c=G/fg/m2·sSieving[9]190m200m2250.01200m341090m55200m90mR200=A20025×100R90=A200+A9025×100R200=200m%R90=90m%A200=200m14A90=90m30m100m3.1.2(1)2I1I2I2I13.1I1(t)I2(t)12,R12()=limT1T⌡⌠0TI1(t-)-I2(t)dt2-16FFT)I1I2R12(),15R12()Lv=L/2-17vm/sLmsvCSW3.6vCS2-17WT/Hg/mm3vm/sCSmm221632#12#12330MW#12SG-1036/17.5-M8671036t/h17.5MPa,541,854.2t/h3.73/3.53MPa,321/541,1355HP-863OFASOFA3-33-3ABCar61.8854.6957.92Har3.43.703.68Oar10.786.828.09Nar0.801.081.17Star0.440.460.55Aar9.1022.021.39Mt13.6011.257.20MadMf3.680.941.27Var26.3427.0727.33Vdaf34.0840.4638.27Qnet,arMJ/kg23.4721.7622.76HGI/547365DT110013701190ST114015001500FT122015001500SiO2%32.0455.8455.93Al2O3%17.0731.8927.45Fe2O3%19.293.833.9917CaO%16.301.904.17MgO%0.780.781.44SO3%7.821.082.08TiO2%0.651.301.19K2O%0.550.881.54Na2O%0.850.400.32HP-843ABCDE3.2HPCERP80CERPRPHPHPRPOFA6700mmSOFANOX183.2#12Fig.3.2DistributionofBoilerwindof#12BiolerofJianbiPowerplant002003003-4kJ/H176106m/s43.6-47.6%74.132819%25%75m/s26.6-30.6%20.980Pa500Pa1000R90%18-22%14mm1530:,:1:::G6-45-13NO.20F:40.7-66.6m3/s15000Pa:1480r/minYKK5604W6Kv/1400kW2::HP:HP843:45.5T/H68.1T/H204kPaR9018-22YHP5606W6Kv/400kW3:::CS2024-HP:660T/H4:::9-19NO16D-6:37837M3/H5898Pa#2#3#1#4513.5kPa14.5kPa26m/s31m/s36T/H40.2A:6.61kPa:27621:3.5kPa:61T/H:81:28-31m/s:11.65kPa4.73kPa1.0%-1.8%R20017.6%-26.8%R90331223.2Fig.3.2TheSchematicsofMonitoringDevicesystemwithcoalparticleinthetwo-phaseflow25mm600mm12mm237200mUSB210µm200µm0.05kg/m310kg/m35m/s35m/s1010100450-20+55090%090%1/51/3009025mm600mmAC100240V3.420202425mm600mm310mm13502.5-32.5-3,3mm13-33-3HRA859/cm23.6-3.92%981%0Mpa550kg/cm21600g0.000326mm0.15MPa,58L/min253-43-4223mmg/m3mg/m311400.10.1MPa200.6MPa0.1MPa200.6MPa31-2mm0.15MPa900(3.3)2643.3Fig.3.2TheSchematicsofValvechart#1227#12#121241AA1233.032.233.228.50.010.020.030.040.0m/s1234A4.1AFig.4.1DistributionofSpeedofAPowdermillA410%412#1228a0510152025303540196191286381476571666761856951104611411236133114261521161617111806190119962091a1a2a3a44.2AFig.4.2Real-timedatamonitoringofSpeedofAPowdermillBB1239.030.125.724.80.010.020.030.040.0m/s1234B4.3BFig.4.3DistributionofSpeedofBPowdermillm/ss#1229B13430%B12b05101520253035404550196191286381476571666761856951104611411236133114261521161617111806190119962091b1b2b3b44.4BFig.4.4Real-timedatamonitoringofSpeedofBPowdermillCC12m/ss#123025.333.032.432.30.010.020.030.040.0m/s1234C4.5CFig.4.5DistributionofSpeedofCPowdermillC#2#3#4#1C12c051015202530354045196191286381476571666761856951104611411236133114261521161617111806190119962091c1c2c3c44.6Cm/ss#1231Fig.4.6Real-timedatamonitoringofSpeedofCPowdermillD28.729.830.029.10.05.010.015.020.025.030.035.040.0m/s1234D4.7DFig.4.7DistributionofSpeedofDPowdermillD5%#1232d051015202530354045196191286381476571666761856951104611411236133114261521161617111806190119962091d1d2d3d44.8DFig.4.8Real-timedatamonitoringofSpeedofDPowdermillEE1228.528.722.525.10.05.010.015.020.025.030.0m/s1234E4.9EFig.4.9DistributionofSpeedofEPowdermillm/ss#1233E314%12e05101520253035196191286381476571666761856951104611411236133114261521161617111806190119962091e1e2e3e44.10EFig.4.10Real-timedatamonitoringofSpee