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《NiWSAPO-11催化剂孔结构性质对其柴油异构降凝性能的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、石油学报(石油加212)ACTAPETROLEISINICA(PETROLEUMPROCESSINGSECTION)第31卷第6期2015年12月文章编号:1001—8719(2015)061394—08NiW/SAPO一11催化剂子L结构性质对其柴油异构降凝性能的影响魏晓鸣,柳云骐,刘晨光(中国石油大学化学工程学院重质油国家重点实验窒,山东青岛266580)摘要:选用SAPO-11分子筛代替传统的ZSM-5分子筛作为酸性载体,Ni和w作为金属组分制备异构降凝催化剂。利用扩孔剂炭黑对催化剂进行扩孑L处理,提高催化剂的传质性能,促进原料和产物分子的扩散。以长庆直馏柴油
2、为原料,采用高压固定床微反装置,考察了扩孔剂含量对催化剂异构降凝催化性能的影响。结果表明,随着扩孔剂含量的增加,催化剂的孔容不断增大,大孔数量不断增多,其柴油异构降凝性能逐渐加强。其中,7C/NiW/SAPO一11催化剂的异构降凝催化性能最好,在反应温度340℃、反应压力4.0MPa、空速1.0h、氢/油体积比500的条件下,凝点由0℃降至一11℃,柴油收率高达98。关键词:SAPO一¨;异构降凝;扩孔中图分类号:TE624.4文献标识码: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基金项目:国家重点基础研究“973”项目(2010CB226905)和国家自然科学基金项目(21006128,U1162203)资助第一作者:魏晓鸣,女,硕
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