简介：Factorsaffectingfoulingofdepentanizerinethyleneunitswereexploredthroughstudyofthecompositionofpyrolysisgasoline,C5distillateandfoulingdepositsfromthedepentanizerwhiletakingintoconsiderationtheprocessingparameters.Avarietyofantifoulingmeasures,inparticulartheinjec-tionofaspecialanti-foulingagentintotheCsgasphasepipelineandtheC5distillaterefluxpipelinewereintroduced.Commercialevaluationtestofamultifunctionalanti-foulingagent,theRIPP-1404anti-foulingagent,wasalsodescribed.

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简介：TheVRDSfeedstockprocessedinrefineriesalongtheYangtzeRiverhasspecialcharacteristics,includinghighFeandCacontent,andlowsulfurandhighnitrogencontent.Dependinguponfeedstockpropertiesandoperatingconditions,someapproacheshavebeendevelopedbytheSINOPECResearchInstituteofPetroleumProcessing(RIPP),whichincludeinstallingthedecalcificationfacility,developingnewguardcatalystsandHDCCRcatalysts,implementinganewcatalystgradingapproach,developingahighlyefficientdistributiontechnologyandapplyingRICPprocessinsomerefineries.Theapplicationeffectshaverevealedthattheintegratedtechnology,whichcanbeconducivetothelong-cycleoperationdevelopedbyRIPP,canmaximizethedepositsuptakecapacityoftheguardreactorandtheactivityofgradingcatalysts.