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时间:2020-01-13
《中东渣油固定床加氢试样胶体稳定性与组分性质关系的研究.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、石油化工2016年第45卷第9期PETROCHEMICAL TECHNOLOGY·1069·DOI:10.3969/j.issn.1000-8144.2016.09.008中东渣油固定床加氢试样胶体稳定性与组分性质关系的研究112222赵元生,赵愉生,张龙力,陈朋伟,赵瑞玉,杨朝合(1.中国石油石油化工研究院,北京102206;2.中国石油大学(华东),山东青岛266580)[摘要]采用固定床渣油加氢评价实验装置,在工业催化剂级配方及长周期运行条件下,研究了中东渣油加氢反应过程中试样的胶体稳定性,考察了试样组成、性质和结构变化对体系胶体稳定性的影响。实
2、验结果表明,控制适宜的渣油加氢反应条件有助于体系胶体稳定性的改善和保持;芳香分和胶质的含量越高越有利于体系胶体的稳定,且两者对体系胶体稳定性的作用相当,饱和分含量越高,体系胶体的稳定性越差;沥青质和胶质的平均相对分子质量差异越小,越有利于体系胶体的稳定性;随加氢反应的进行,沥青质芳香环系周边氢取代率增加,芳碳率降低,有利于体系胶体的稳定性。[关键词]中东渣油;固定床;加氢评价装置;胶体稳定性;沥青质;芳香烃[文章编号]1000-8144(2016)09-1069-06[中图分类号]TE624[文献标志码]ARelationshipbetweencoll
3、oidalstabilityvariationandfractionalpropertiesofMiddleEastresiduesamplesduringfix-bedhydrotreating112222ZhaoYuansheng,ZhaoYusheng,ZhangLongli,ChenPengwei,ZhaoRuiyu,YangChaohe(1.PetrochinaPetrochemicalResearchInstitute,Beijing102206,China;2.ChinaUniversityofPetroleum(EastChina),Q
4、ingdaoShandong266580,China)[Abstract]ColloidstabilityinMiddleEastresidualoilhydrotreatingwasresearchedinasetofcontinuousfixed-bedtestapparatusundercommercialoperatingconditions.Theeffectsofcompositions,propertiesandstructuresofsamplesduringhydrotreatingonthecolloidalstabilitywerei
5、nvestigated.Theresultsshowedthatthesuitableoperatingconditionswerebeneficialtotheimprovementofthecolloidalstability.Thehigherthecontentsofbothresinsandaromaticsinthesampleswere,thehigherthecolloidalstabilitywas,andtheireffectonthecolloidalstabilitywasequivalent.Onthecontrary,thei
6、ncreaseofsaturatescontentplayedanegativeroleonthecolloidalstability.Asthedifferencebetweentheaveragemolecularweightsofasphaltenesandresinswentdown,thecolloidalstabilityofthesampleswouldincrease.Asthehydrotreatingwenton,thesubstitutionrateofhydrogenonaromaticringsinasphaltenesincr
7、eased,whichwasbeneficialtotheimprovementofthecolloidalstability.[Keywords]MiddleEastresidualoil;fixed-bed;hydrotreatingevalationdevice;colloidalstability;asphaltenes;aromatics固定床渣油加氢技术因其设备结构简单、投口聚沉、生焦,从而堵塞孔道,使催化剂迅速失[4-5]资费用较低、处理渣油范围广等优点在石油炼制活。渣油各组分的组成、结构及极性均对体系[1-3][6]中的地位越来越重要。试
8、样的胶体性质对渣油胶体性质有影响。在加氢反应条件下,渣油四加氢过程有较大影响,当体系的胶体稳定
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