cao催化热解微拟球藻制取生物油实验与机理-研究

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1、万方数据青岛科技大学研究生学位论文EXPERIA皿三NTALINⅣESTIGATl0NANDMECHANISMQNNANNoCHLoRoPSisSPPYROLYSISINTHEPRESENCE0FCAOABSTRACTEnergyisthefundamentaldrivingforceoftheeconomicgrowthandtheworld’Sdevelopmentaswellasthematerialbasisforhumanlife．Inrecentyears，therapiddevelopmentofthewor

2、ldeconomyhasledtotheglobalshortageoffossilfuelsSOthattheirpriceshaveincreasedsignificantly．Moreover,theuseoffossilfuelshasalsobroughtaboutaveryprominentenvironmentalproblem．Therefore，acceleratingthedevelopmentandutilizationofnewenergysourceshasbecomeacommonactiona

3、roundtheworld．Recently,theutilizationofbiomassfortransportfuels，chemicalcommodities，powergenerationandreductionofC02emissionsisgrowinginterest．Thus，biomasshasthepotentialofbeinganimportantrenewableenergysource．Inthisthesis，Nannochloropsissp．catalyticpyrolysisproce

4、ssinpresenceofCaOisinnovativelyexplored，themainresultsandconclusionsaresummarizedasfollows：Firstly，ThesurfaceofCalciumoxide(CaO)wasrenewedbyusinghydration-calcinationandthermalcalcinationsmethods，respectively．ThestructureandpropertyofrenewedCaOwascharacterizedbyBE

5、T,XRD，SEMandC02-TPDtechniques．Meanwhile，thecatalyticpyrolysisofNannochloropsissp．wasinvestigatedinafixed-bedreaetonItindicatesthattwopreparationmethodsforCaOobviouslyincreasethespecificsurfacearea，meso-porenumbers，andporevolume．TherenewedsurfaceCaOcatalystswereoft

6、ypicalface-centeredstructureandofhighercatalystactivity,andcouldimprovebio—oilproductquantity．TheyieldofBio—oilproducedonthehydration—calcinationCaOwas28．65％，whichwasofhighercalorificvalue(38．600kJ‘91)，lowerkineticviscosity(8．011mm2。s-1)，and万方数据CaO催化热解微拟球藻制备生物油实验与

7、机理研究lowermoisturecontent(2．49％)．Themainingredientsofbio—oilfromcatalyticpyrolysisofNannochloropsissp．wereC12-C17saturatednormalalkanes，whicharemoresuitableforbeingupgradedtobio-diesel．Secondly，ThecatalyticpyrolysisofNannochloropsissp，wascarriedoutinabench—scalefix

8、edbedreactorusingHydrationCaOcatalyst．TheeffectoftheHydrationCaOdosageonpyrolysisproductyieldandbio-oilcompositionswasinvestigated．Theregenerationcharac