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《油頁(yè)巖熱解及燃燒的動(dòng)力學(xué)研究 畢業(yè)論文》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、摘要油頁(yè)巖是一種重要的化石能源，其儲(chǔ)量巨大，是石油和天然氣的重要替代能源。合理地開發(fā)利用油頁(yè)巖，對(duì)彌補(bǔ)能源資源不足，緩解國(guó)家石油短缺具有極為特殊的戰(zhàn)略意義。對(duì)油頁(yè)巖熱解及燃燒的動(dòng)力學(xué)進(jìn)行研究是保證油頁(yè)巖優(yōu)化轉(zhuǎn)化的前提，也是油頁(yè)巖綜合開發(fā)利用工作的基礎(chǔ)。關(guān)鍵詞油頁(yè)巖熱解燃燒等轉(zhuǎn)化率法動(dòng)力學(xué)AbstractOilshale,asoneoftheimportantfossilfuels,hasagreatdealofresources.Itistheimportantreplacementofoilandnaturalgas.Therea
2、sonableexploitationandutilizationofithasthespecialstrategicsignificancetomakeupthedeficiencyofenergyresourceandalleviatetheenergycrisis.Itisthefoundationofoilshaleoptimizeconversionthatthepyrolysisandcombustionkineticscharacteristicswasstudied.Inthepaper,thepyrolysisan
3、dcombustionkineticscharacteristicsofoilshalesamplesareinvestigatedbytheoreticalandexperimentalanalysis.Proximateanalysisandultimateanalysiswereconducted.ThepyrolysisbehaviorofHuadianandMaomingoilshalesampleswasstudiedonthethermogravimetricanalysis(TG，DTG)atdifferenthea
4、tingratesunderthenitrogenenvironment.Theapparentactivationenergyinpyrolysisreactionsofoilshalesampleshasbeenanalyzedbythreekindsofiso-conversionalmethods.TheSestak’scomplexmechanismwasusedtofitlinerforpyrolysisreactionmechanismofoilshale,andthedecompositionmechanismand
5、frequencyfactiorwereobtained.Theresultsshowedthattheactivationenergywasnotaconstantthroughoutthereactionprocess,andoilshalepyrolyticmechanismwascomplexandmainlyattributedtothenuclearmechanism.Furthermore,non-isothermalthermogravimetriccombustionexperimentsonoilshalesam
6、pleshavebeencarriedout.Twothermoanalyticalmethods(theCoats-Redfernmethodandisoconversionalmethod)areadoptedtocalculatetheapparentactivationenergyincombustionreactionofoilshalesamples.Theactivationenergycalculatedbytwomethodsshowedthatoilshalecombustionincludedtwophases
7、,andtheactivationenergyatlowtemperatureswaslowerthanathightemperatures.Theresultsanalyzedbytheisoconversionalmethodshowedoilshalecombustionwasacomplexmulti-stepreactionprocess,theCoats-Redfernmethodassumedthereactionmechanismanditwasnotreasonable.Inthemeantimetheresult
8、swerediscussed.Moreover,thecombustionperformanceofoilshaleanditssemi-cokearestudiedbyDSCandtheeffectofdifferentheatin
