水煤浆气化原料的成浆性研究

334201010COALCONVERSIONVol.33No.4Oct.2010*(IRT0620).1);,200237;3);2),(),212006:20100506;:20100611水煤浆气化原料的成浆性研究*邵守言1)王忠华2)王辅臣3)在实验室条件下研究了从低煤化度烟煤到高煤化度无烟煤,以及石油焦等不同气化原料煤的成浆性.为提高低煤化度烟煤的成浆浓度,在保证其混合原料灰熔融特征温度满足液态排渣前提下,将低煤化度烟煤与一种或两种煤化度较高的煤或者石油焦配比,考察了它们的成浆性.结果表明,煤化度适中的QD煤单独制浆浓度达到70%,黏度536mPas,流动性为A;通过不同煤种的级配,三种原料配合的料浆浓度为62%时,黏度在340mPas~550mPas之间,可以获得符合液态排渣气化要求的混合料水煤浆,扩大了气化原料来源.水煤浆,成浆性,配煤,无烟煤,石油焦TQ517.4+30引言,,,,.,.2007,.,.,[15],.[6]1实验部分1.1SHSFHNQDZJSYJ1SYJ2DTMLPC,1.1,SHSF,10%,,,,SFSF,SHSF..1(%)Table1Proximateandultimateanalysisofcoalsamples(%)SampleProximateanalysisMadAdVdafFCdafUltimateanalysisCHNStO*SHcoal10.426.1636.7763.2380.604.481.000.4413.48SFcoal11.507.1637.8062.2084.434.711.020.509.34HNcoal2.1118.0240.2659.7482.75.331.460.3410.17QDcoal1.1323.2935.9664.0484.115.271.360.269.00ZJcoal2.3520.3240.3959.6181.545.421.440.3111.29SYJ10.430.999.4690.5489.483.461.340.045.68SYJ22.800.289.1790.8392.125.132.020.520.21DTcoal2.9320.0132.4167.5983.957.000.680.647.73MLcoal1.6421.8712.1887.8291.035.291.241.161.28PCcoal1.2710.809.2390.7792.305.081.230.530.86*Oxygencontentbydifference.1.2:,,,,30min.1.3[6]:1):NDJ1B360r/min,,30,5min,11min~15min,.2):,.A,,;B,,;C;D.3):D25mm!250mm,,7d.=(cm)(cm)!100%(1)4):25.9g.=(cm)(cm)!100%(2)5):=(g)(g)+(g)(3)2结果与讨论2.12.2Table2SlurryabilityofsinglecoalSampleConcentration/%Viscosity/(mPas)Perforationratio/%Waterprecipitationratio/%FluiditySHcoal60110052.156.13C+SFcoal6096419.442.78C+HNcoal655461002.30A+QDcoal705361001.32A+ZJcoal688791001.33A+DTcoal6410401002.15B-MLcoal654931002.05A+PCcoal643881003.95BSYJ1683421003.95ASYJ2644301002.10B+2,SHSF60%,C,,SHSF(10%),,1000mPas.,.,,;,;,2:,,..,NicoletMagnaIR550,4000cm-1~400cm-1,KBr,,1.1Fig.1FTIRspectraofcoals1,.3400cm-1∀OH,2920cm-12851cm-1∀CH2∀CH3,1600cm-1,CC,1100cm-1~1300cm-1∀C∀O∀C∀,900cm-1~700cm-1C∀H.2,SF,∀CH2∀CH3.SF,11.5%,SF.SYJ2,∀C∀H∀CC∀,SYJ2,.DTPCZJ,,,,.2742.2,,,?,;,,,,,.,,,.,16%,1300,SF/HNSF/ZJ70#30.3.3Table3SlurryabilityofblendcoalsSampleMassratioConcentration/%Viscosity/(mPas)Perforationratio/%Waterprecipitationratio/%Fluidity70#30608431002.36BSF#HN80#20609001002.44B-90#10609601002.64C70#30608231002.53BSF#ZJ80#20608891002.65B-90#10609451002.78C3,,HNZJ,,.ZJHN,,ZJHNSF,,HNZJ,,,.HNZJSF,HNZJSF.,.,,,,,,,,,HNZJ,.SF,SF.DTMLPC,,.SFDTMLPC,20%,.SF2.2SFFig.2EffectonviscosityandrateofseparatedwaterofSFcoalblendedwithdifferentcoalsa∀∀∀Viscosity;b∀∀∀Rateofseparatedwater2,,DTMLPC,.,SFDT,.,282010.,,,,,,,.,,,Zeta,,.,,,,SFMLML.2.3SYJSYJ,.SYJ,Hardgrove()95,SF50(,,).SYJ,SYJ;SYJ,,10%,20%~40%,.,SYJ90%200,,20065%~85%.SYJ,SYJ,,,.,SYJ,SYJ.SFSYJ4.4,SYJ4SFSYJTable4EffectofSFcoalblendedwithSYJonslurryabilityofCWSSFcoal/SYJ(massratio)Concentration/%Rateofthrough200mesh/%Viscosity/(mPas)FluidityWaterprecipitationratio/%100#06062.0659B-3.9770#306067.4413A6.626167.4582B5.2360#406169.2507B4.6750#506077.0454B5.846277.0726C-5.1040#606372.8588B-5.3730#706274.6390A6.066474.6630B-4.760#1006480.0266A6.71,,,,,,SYJ70%,B.SF,SYJ,.,,;SYJ,,SFSH,,,.2.4,SYJSF,,305.5,SF,SYJ2,,SFSYJ2.,SFSYJ280%~90%,HNQDZJ,,SYJ.3结论1)SYJ,.SHSF,,,,;,,2945Table5EffectofblendingcoalonslurryabilityofCWSSampleMassratioConcentration/%Viscosity/(mPas)Perforationratio/%Waterrecipitationratio/%Fluidity50#10#40625051005.77B+SF/HN/SYJ250#15#35625321006.12B+50#20#30625481007.74B+50#10#40623451004.61BSF/QD/SYJ250#15#35625251004.67B50#20#30625401005.23B50#10#40623601004.45BSF/ZJ/SYJ250#15#35625001004.57B50#20#30625701004.87B,QD,70%,536mPas,A.2),SFSH,,,SYJ,62%,340mPas~550mPas,B,.[1],,.[J].,2008,31(4):7274.[2],,.[J].,2009,32(3):3539.[3],,.[J].,2009(2):69.[4],,.[J].,2005,33(2):155160.[5],,.[J].,2007,29(4):4143.[6],.Texaco[J].,2002(2):1620.STUDYONSLURRYABILITYOFCOALWATERSLURRYUSEDFORCOALGASIFICATIONShaoShouyanWangZhonghua*andWangFuchen(KeyLabofCoalGasificationofMinistryofEducation,EastChinaUniversityofScienceandTechnology,200237,Shanghai;*JiangsuSopoGroupCompanyLimited,212006Zhenjiang,Jiangsu)ABSTRACTRaingingfrombituminouscoalsthatcontainlowdegreeofcodificationtohighrankanthracite,aswellaspetroleumcokesforcoalgasificationwerecarriedoutinthelab.Underthepremiseofassuringthemixedcoalsashfusiontemperatureistomeetwithdischargingliquidash,somehigherrankcoaland/orpetroleumcokesarechosenasincreasingconcentrationoflowrankCWSbyblending.Theslurryabilityofmixedcoalswaterslurrywasalsoinvestigated.ThetestresultsshowthattheCWS∃sconcentrationofhighrankcoalishigherthanthatoflowrankcoal,theCWS∃sconcentrationofmiddlerankcoalisabout70%,theapparentviscosityis536mPas,andtheflowagepropertyisgivenAgrade.WhentheCWS∃sconcentrationistokeepin62%,theCWS∃sapparentviscosityof3kindsoffeedstockblendwhichcontainslowrankcoalis340mPas550mPas,andcansatisfytheneedofCWS∃sgasificationtechnologyofliquidashdischarge.KEYWORDScoalwaterslurry,slurryability,blendingcoal,anthracite,petroleumcoke302010