提高冰粉生成甲烷水合物转化率的实验研究-能源与环境工程专业论文.docx

提高冰粉生成甲烷水合物转化率的实验研究TheExperimentalResearchofimprovingiceconversioningeneratingmethanehydrateAbstractNaturalgashydratehasbeenrecognizedasallimportantpotentialstrategicresourcethatCallreplacetraditionalfossilenergybecauseofitswide distribution，abundantreserves，highenergydensityandcleancombustion．TobeRerunderstandthephysicochemicalpropertiesofgashydrate，itisverynecessarytoconductthestudyonthegashydrateformationanddissociation．However，itisreallyuneconomicalanduneasytoobtainnaturalhydrate-bearingsamplesfromtheseabed，andsynthesizing gashydrateinlaboratorybysimulatingin—situconditionshasbecomeanecessarywayintheresearches．Thoughtherearemanywaystosynthesizegashydrateinlaboratory，studiesontheeffectofwaterforminthehydrateformationfoundthaticeWasmucheasiertogeneratethehydratewithmethanethanwater．Infact，gashydrateformedfromiceandgasmixturesisoneoftheprimarymethodstosimulatethegashydrateformationinthecryolithozone andhavecomprehensiveunderstandingofhydrateformationkinetics．Unfortunately，thesaturationofmethanehydratesynthesizedinlaboratoryisnothighenoughtosimulatenaturalstorageconditions，SOexploringmethodsto obtainhydrate埘mllighsaturationbecomeverynecessary．Inthispaper，aseriesofexperimentsofforminghydratefromicepowdersindifferentconditionshavebeencarriedoutwithconstantvolumemethodtoevaluatetheeffectsoffactorssuchaspressure，temperature，porousmediumandchemicaladditives，hopingtocomeupwithmethodstoobtainhydratewithhighsaturation．Basedontheexperimentalresultsandtheanalysis，thefollowingconclusionshavebeendrawn．Initialpressurehasadirecteffectontheformationofgashydrate，andthiseffectismoreobviouswhenthetemperatureisclosertofreezingpoint．SecondarypressurizationCanimprovethesaturationofgashydratetoacertainextent．Whentheinitialpressureisnothigh，thesecondarypressurizationhasallobviouseffectonimprovingthesaturationofgashydrate．Temperatureisveryimportanttotheformationofmethanehydrate，andlowtemperatureisgoodforthehydrategenerating．Heatingwillobviouslyincreasethehydratesaturation．Heatinghasamoreob