SSHT Process-a Low Cost Solution for Low Sulfur and Low Aromatics Diesel-中国期刊网

摘要 Theneedforcleanerfuelshasresultedinacontinuingworldwidetrendtoreducedieselsulfurandaromatics.Therearemanyapproachestoreducingsulfurandaromaticsindiesel.Mostofthemhaveacommondrawbackofhighcostbecauseofadoptingtwostagesofhydrotreatingandusingnoble-metalcatalyst,especiallyforreducingaromatics.TheattempttoresolvethisissuehasledtotherecentdevelopmentoftheSingleStageHydrotreating(SSHT)processbyResearchInstituteofPetroleumProcessing(RIPP),SINOPEC.TheSSHTprocessisasingle-stagehydrotreatingtechnologyforproducinglowsulfurandlowaromaticsdiesel.Theprocessusesoneortwonon-noble-metalcatalystssystemandoperatesatmoderatepressure.Whenrevampinganexistingunittomeetlowaromaticsdieselspecification,theonlythingtodoistoaddareactororreplacetheexistingreactor,Inpilotplanttests,theSSHTtechnologyhassuccessfullytreatedSRGO(StraightRunGasOil),LCO(LightCycleOil)ortheblendofthem.ItisshownthatbyusingtheSSHTprocessdieselwithsulfurof30ppmandaromaticsof15m%canbeproducedfromMiddle-EastSRGOanddieselwitharomaticscontentof25m%canbeproducedfromcrackedfeed,suchasFCC-LCO.Highdieselyieldandcetanenumbergain(fromcrackedfeedstocks)givetheSSHTtechnologyaperformanceadvantagecomparedtoconventionalhydrocrackingandhydrotreatingprocesses.Thelowerinvestmentandoperatingcostisanotheradvantage.ThefirstcommercialapplicationoftheSSHTtechnologyhasbeeninoperationsinceSeptember2001.

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SSHT Process-a Low Cost Solution for Low Sulfur and Low Aromatics Diesel

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SSHT Process-a Low Cost Solution for Low Sulfur and Low Aromatics Diesel

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