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《NiWSAPO-11催化劑孔結(jié)構(gòu)性質(zhì)對其柴油異構(gòu)降凝性能的影響.pdf》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、石油學(xué)報(石油加212)ACTAPETROLEISINICA(PETROLEUMPROCESSINGSECTION)第31卷第6期2015年12月文章編號:1001—8719(2015)061394—08NiW/SAPO一11催化劑子L結(jié)構(gòu)性質(zhì)對其柴油異構(gòu)降凝性能的影響魏曉鳴,柳云騏,劉晨光(中國石油大學(xué)化學(xué)工程學(xué)院重質(zhì)油國家重點實驗窒,山東青島266580)摘要:選用SAPO-11分子篩代替?zhèn)鹘y(tǒng)的ZSM-5分子篩作為酸性載體,Ni和w作為金屬組分制備異構(gòu)降凝催化劑。利用擴孔劑炭黑對催化劑進行擴孑L處理,提高催化劑的傳質(zhì)性能,促進原料和產(chǎn)物分子的擴散。以長慶直餾柴油
2、為原料,采用高壓固定床微反裝置,考察了擴孔劑含量對催化劑異構(gòu)降凝催化性能的影響。結(jié)果表明,隨著擴孔劑含量的增加,催化劑的孔容不斷增大,大孔數(shù)量不斷增多,其柴油異構(gòu)降凝性能逐漸加強。其中,7C/NiW/SAPO一11催化劑的異構(gòu)降凝催化性能最好,在反應(yīng)溫度340℃、反應(yīng)壓力4.0MPa、空速1.0h、氫/油體積比500的條件下,凝點由0℃降至一11℃,柴油收率高達98。關(guān)鍵詞:SAPO一¨;異構(gòu)降凝;擴孔中圖分類號:TE624.4文獻標(biāo)識碼:Adoi:10.3969/j.issn.10018719.2015.06.021EffectofPoreStructureofN
3、iW/SAPO一11onItsCatalyticPerformanceforDieselFuelHydroisomerizationDewaxingWEIXiaoming。LIUYunqi.LIUChenguang(StateKeyLaboratoryofHeavyOilProcessing,KeyLaboratoryofCNPCCatalysis,ChinaUniversityofPetroleum,Qingdao266580,China)Abstract:HydroisomerizationdewaxingcatalystNiW/SAPO一11wasprepar
4、edwithSAPO一11zeoliteasacidiccarrierinsteadofZSM一5zeoliteandNiWdoublemetalsastheactivecomponents.Inthecatalystpreparationpore—enlargingreagent(carbonblack)wasusedtoelevatemasstransferperformanceofthecatalystandpromotethediffusionprocessofthematerialsandproducts.Thehydroisomerizationdewa
5、xingperformanceofthepreparedC/NiW/SAPO一11catalystwasevaluatedwithChangqingstraight—rundieseloilasrawmaterialinthehigh—pressurefixed—bedmicroreactor.Theinfluenceofpore—enlargingreagentonthehydroisomerizationdewaxingperformanceofcatalystswasinvestigated.Experimentalresultsshowedthatthepo
6、revolumeandthenumberoflargeporeofC/NiW/SAPO一11catalystsincreasedwiththeincreaseofpore—enlargingreagentcontent,sothehydroisomerizationdewaxingperformanceofcatalystswasimproved.With7C/NiW/SAPO—llascatalystunderthereactionconditionsof340℃,4.0MPa、LHSV1.0andH2/oilvolumeratio500,thebesthydro
7、isomerizationdewaxingperformancecouldbeobtained,thatis。thefreezingpointofdieselfueldroppedfrom0~Cto——28~Cwiththedieselyieldashighasto98.Keywords:SAPO一11;hydroisomerizationdewaxing;poreexpansion收稿日期:20140707基金項目:國家重點基礎(chǔ)研究“973”項目(2010CB226905)和國家自然科學(xué)基金項目(21006128,U1162203)資助第一作者:魏曉鳴,女,碩