反应温度对加氢残渣油四组分含量和结构的影响.pdf

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1、第4l卷第3期燃料化学学报Vo1．41NO．32013年3月JournalofFuelChemistryandTechnologyMar．2013文章编号：0253-2409(2013)03-0309-05反应温度对加氢残渣油四组分含量和结构的影响孙昱东，杨朝合，谷志杰，韩忠祥(1．中国石油大学(华东)化学工程学院，山东青岛266555；2．北京石油化工工程公司西安分公司，陕西西安710075)摘要：以沙轻减渣为原料，在高压釜内研究了不同反应温度下加氢反应前后渣油的四组分含量及其结构组成变化。结果表明，加氢残渣油中的饱和分含量明显增加，而芳香分和胶质的含量均降低，四组分含量随反应温度的升

2、高均呈现规律性变化。加氢后四组分的H／C摩尔比和平均相对分子质量均降低，芳碳分率增加。随反应温度升高，四组分的H／C摩尔比和平均相对分子质量降低，烷基碳分率降低；芳香分、胶质和沥青质的芳碳分率增加；胶质和沥青质的总环数和芳环数均降低。渣油加氢过程中四组分都发生了明显的氢解和脱烷基反应。加氢反应中，胶质和沥青质结构单元间的各种桥键可发生明显地断裂，导致其结构单元数减少，且结构单元数随反应温度的升高而减少。关键词：渣油加氢；反应温度；四组分；含量；结构组成中图分类号：TE624文献标识码：AInfluenceofreactiontemperatureonthecontentandstruct

3、ureoffourfractionsinresiduehydrotreatingSUNYu—dong，YANGChao—he，GUZhi-jie，HANZhong—xiang(1．CollegeofChemicalEngineering，ChinaUniversityofPetroleum(EastChina)，Qingdao266555，China；2．Xi’anBranch，BeijingPetrochemicalEngineeringCO．，LTD，Xi’an710075，China)Abstract：Thechangesofthecontentandstructureoffour

4、fractionsinthevacuumresidueofSaudiArabialightcrudeoil(ALVR)pre—andposthydrotreatingwereinvestigatedinanautoclaveatdifferentreactiontemperatures．Theresultsshowedthatafterthehydrotreafing，thesaturatecontentisincreasedgreatlY，whilethearomaticandresincontentsaredecreasedinthehydrotreatedresidue；theco

5、ntentsoffourfractionschangesregularlywiththeincreaseofthereactiontemperature．TheCmolratioandmolecularweightoffourfractionsinthehydrotreatedresiduearedecreasedwhilethefractionofaromaticcarbons()isincreasedaftertIlehydrotreating．Withtheincreaseofreactiontemperature．theCmolratio．molecularweightandth

6、efractionofparaffincarbons()offourfractionsaredecreased，whileandthecontentofresinandasphalteneareincreasedinthehVdrotreatedresidue；meanwhile，thetotalringsandaromaticringsofresinandasphaltenearedecreased．Thefourfractionsintheresiduehaveundergonehydrogenolysisandhydrodealkylationduringthehydrotreat

7、ing．Bridgebondsbetweentheunitsofresinandasphaltenemaybreakbyhydrotreating，leadingadecreaseoftheunitnumberofresinandasphaltene，whichismoreprominentathigherreactiontemperature．Keywords：residuehydrotreating；reactiontemper