固體磷酸催化FCC汽油烷基化脫硫的研究.pdf

1、天津大學(xué)碩士學(xué)位論文固體磷酸催化FCC汽油烷基化脫硫的研究姓名：張麗萍申請學(xué)位級別：碩士專業(yè)：化學(xué)工藝指導(dǎo)教師：李永紅20070601ABSTRACTThetechniqueforlowsulfurgasolinehasbecomeanimportantresearchdutyinpetrochemicalindustrysincethelegislationofenvironmentalprotectionismoreandmores

2、trictThiophenesulfidesaccountedforaboveeightypercentofthefluidcatalyticcrackinggasoline(FCC)SohowtopromotethiophenesulfidestransformduringtheprocessofFCCgasolinedesulfurizationwasthekeyofreducingsulfurcontentWhilesolidph

3、osphoricacidcatalystpreparedbykieselguhrandphosphoricacidwasanimportantwayofrealizingenvironmentalfriendlycatalysiscraftAseriesofsolidphosphoricacidcatalystswerepreparedbyimpregnationmethodusingonhophosphoricacid，pyropho

4、sphoricacidasmaterials，withtkieselguhrandMCM41mesoporousmolecularsieveassupportTheeffectsofdifferentpreparationfactors，suchasweightratioofpyrophosphoricacidtoorthophosphoricacid，weightratiooftotalacidtokieselgulucalcinat

5、iontemperatureandcalcinationtime，andreactionconditions，suchasweightratioofcatalysttogasoline，reactiontemperatureandreactiontime，onFCCgasolinealkylationdesulfurizationwereinvestigatedThestabilityofthebestcatalystWasalsopr

6、eliminarystudiedTheresultsindicatedthatthemainfactorsofinfluenceonthecatalyticperformanceofSPACweretheweightratiooftotalacidtOsupport，theinfluenceoftheweightratioofpyrophosphoricacidtoorthophosphoricacidandcalcinationtim

7、ewassmallerWhilethereactiontemperaturewas150“(2andreactiontimeWaslh，thesulfurcontentinoilfractionunder100“(2wasreducedfrom16043mg‘L—to3586mg‘L1，between100“Cand120“Cfrom30574mg‘L～t08076mg‘L。1andabove120“(2from42149mg。L—to

8、53319mg‘L～ThestabilityresultsshowedthatwhenFCCgasolinematerialWaspretreatedafterresinadsorption，theactivityofthecatalystafterusedfivetimesinsequenceincatalyzingalkylationreactionwasstable；whenFCCgasolinematerialwasnotpre

9、treated，theactivityofthecatalystWasstillverystableComparisonwiththeperformanceofthetwocatalystspreparedwithdifferentsupports，theresultsindicatedthatsurfaceareaofsupportshasnotinfluenceontheperformanceofthecatalyst，themai

10、nfactorofinfluenceontheactivityofcatalystwastherelativelyproportionoforthophosphoricacidsiliconandpyrophosphoricacidsiliconTheresultshaveshownthattheoptimumpreparationconditionsofSPACbythesupportofkieselguhrorMCM一41mesop