《加拿大会议报告》PPT课件

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1、MeijunWangTaiyuanUniversityofTechnologyChinaOctober26,2010StudyonSulfurTransferintoGaseousProductsduringPyrolysisofweaklyreductiveandreductiveCoalsOutline1Backgrounds2Experimental3Resultsanddiscussion4Conclusions5AcknowledgementsBackgroundsSulfurelementincoali

2、soneofthemainfactorsrestrictingcoal’seffectiveandcleanutilization.Pyrolysisisasimpleandeffectivemethodforthecleanconversionofcoal.thefactorsofdesulfurizationextentduringcoalpyrolysis:1)theinternalfactors(coalproperties);2)theexternalfactors(pyrolysisconditions

3、);Chinaisrichinweaklyreductivecoals,therearemanydifferentpropertiesbetweenweaklyreductivecoalsandreductivecoals.Thepurposeofthiswork:Tostudythedifferenceofsulfurtransitionbetweenweaklyreductiveandreductivecoalswithdifferentpropertiesduringpyrolysis.Experimenta

4、lTheexperimentalobject:threeweaklyreductivecoalsamplesfromNingxia(NX),Xinjiang(XJ),Shendong(SD)coalminesandareductivecoalsamplefromPingshuo(PS)coalminewererespectivelychosenfortheexperimentalworkinthisinvestigation.TABLE1.Ultimateandproximateanalysesofcoalsamp

5、lesSampleProximateanalysis(wt%)Ultimateanalysis(wt%,daf)H/CO/CMadAdVdafCHNSO*NX12.605.1630.9179.713.840.710.4615.280.580.14XJ7.514.6724.5283.263.440.770.3312.200.500.11SD9.804.5033.7279.534.160.910.4814.920.630.14PS2.2317.9337.1980.415.201.381.0611.950.780.11T

6、hreeweaklyreductivecoalspossesstheweaklyreductivepropertieswithlowerash,lower-sulfurcontents,lowerH/CatomicratiocomparedwithreductivePScoal.ExperimentalSampleAshcomposition/wt%SiO2Al2O3Fe2O3TiO2CaOMgOSO3K2ONa2OP2O5NX13.145.5922.150.4225.814.4213.720.283.90.05X

7、J13.310.5527.380.4432.521.968.780.071.10.75SD23.289.6615.980.8427.483.2314.230.082.30.03PS48.3144.662.251.971.330.130.210.170.060.51TABLE2.AshanalysisofcoalsusedinexperimentTABLE3.PetrographicanalysisofcoalsusedinexperimentSampleVitriniteInertiniteExiniteMiner

8、alRomax(%)NX22.875.30.81.10.41XJ2.791.92.43.00.63SD40.156.80.42.70.51PS44.642.17.26.10.61Therearelower-levelsiliconandaluminum,higher-levelalkalimetals,alkalineearthmetalsandironco