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1、天津大學(xué)碩士學(xué)位論文十氫萘超臨界裂解脫氫的研究姓名：董飛申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工藝指導(dǎo)教師：張香文20030701AbstractAbstractIntllehypersonicflightover5Machastheavailableeffectivecoolantusedinhypersonicvehicles，thetraditionalfuelscarl’tmeetthedemandsathypersonicflightj

2、ustusingtheirphysicalheat—absorbedcapacities，Tomeetthischallenge，endothermicfuelsthatchemicallydecomposeintoenergeticgasesviacrackingreactionsandprovideextremelyhighheatsinkhavebeendevelopedThesefuelsprovidethecoolingfor

3、hypersonicflightandconvertthefuelintocomponentsthatcanbebumedinasupersoniccombustorNumerousstudieshavebeenpublishedontheendothermicfuels，whichincludedthechoiceoffuels，thetypesofendothermicreaction，theimprovementoffuelspe

4、rformanceandtestoffuelsonpracticalaircraftnepresentworkistostudytheendothermicreactionoffuelsThemaincontentswereasfollows：FirstlythephysicalpropertiesoffuelswerecalculatedbyusingSUPERSTRAPPsoftwarefcodedbyNISnTheresultss

5、howedthatthepropertiesoffuelsinsupercriticalstateweresignificantlydifferentfromthatinnormalpressure，thiswouldmaderesidenttimeoffuelsinreactorprolongedandwollldgavegreateffectonreactionoffuelsSecondly，thepyrolysisreaction

6、ofdecalinandMCHwerestudiedAfteranalyzingthecompositionsoftwofuelspyrolyticproducts，thepyrolysismechanismsofdecalinandMCHwerediscussedandtheirmaerokineticsequationsaremeasuredrespectivelyThirdlytheheatsinkvaluesofthetwofu

7、elsatdifferentpyrolytictemperatureswerecalculatedbyusingSUPERTRAPPsoftware(codedbyNIST)PyrolysisreactionofbothdecalinandMCHcallprovidehighheatsinkathighrectiontemperatureWhenthetemperatureis700℃thcheatsinkofdecalinandMCH

8、are243725kJ／kgand3119，29kJ／kgrespectivelythetwofuelscanofferenoughcoolingcapacityforhypersonicflightatabove5MachFinally，selectivityandcatalystlifetimeofendothermicfueldecalincatalyticdehydrogenationwasstudiedatnormalpres

9、sureandsupercriticalstateTheeffectsoftemperature，pressureandspacevelocityondecalindehydrogenationconversionwerestudiedTheusedcatalystwasanalyzedbyTGATheresultsshowedthattotaldehydrogenationconversionofdecalinenhancedsign

10、ificantlyDehydrogenationofcisdecalinwasmoreeasilythanthatoftransdecalinCarbondepositedoncatalysthaslesseffectonreactioninsupercriticalstatethannormalstateKeywords：endothermicfuels，pyrolysis，catalyticdehydrogenation，decal

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