预览加载中，请您耐心等待几秒...

渤海直馏柴油碱洗染色原因分析与对策研究.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

渤海直馏柴油碱洗染色原因分析与对策研究 Abstract Bohaiatmosphericandvacuumdistillationdieselalkalinewashingdyedphenomenonhasbecomeacommonproblemintherefiningindustry.Thispaperanalyzesthereasonsforthisphenomenonandproposesfeasiblecountermeasures. Introduction Bohaiatmosphericandvacuumdistillationdieselisanimportantproductofoilrefining.Withtheincreaseindemandfordieselfuel,therefiningindustrycontinuouslyimprovesthequalityofdieselfuel.However,duringtheproductionprocess,thereisanabnormalphenomenonofdieselfuelbeingcoloredanddiscoloredafteralkalinewashing,whichseriouslyaffectsthequalityofdieselfuelandtheeconomicbenefitsoftheenterprise.ThispaperanalyzesthereasonsforthealkalinewashingdyedphenomenonintheproductionofBohaiatmosphericandvacuumdistillationdiesel,andputsforwardtargetedsolutionstoprovideatheoreticalbasisforsolvingthisproblem. Causesofalkalinewashingdyedphenomenon (1)Incompleteneutralizationofacidsubstances Intheproductionprocess,duetoequipmentcorrosionandotherfactors,thereareacidsubstancesinthedieselfuel,whichneedtoberemovedbyalkalinewashing.However,iftheneutralizationofacidsubstancesisnotcomplete,itwillleadtotheformationofcoloredcomplexesanddiscolorationproblemsduringthealkalinewashingprocess. (2)Formationofasphalteneagglomerates Asphalteneagglomeratesareformedduetotheagglomerationofasphaltenemoleculesinthepresenceofapolarsolvent.Intheproductionprocess,ifthetemperatureofthefeedstockistoohigh,thedegreeofpolymerizationofasphaltenemoleculesisincreased,whichmakesiteasiertoformasphalteneagglomerates.Afteralkalinewashing,theformationanddepositionofasphalteneagglomerateswillcausediscolorationofthedieselfuel. (3)Formationofnon-polarcomplexes Non-polarcomplexesareformedbythecombinationofhydrocarbonsandpolarimpurities.Intheproductionprocess,duetothepresenceofdissolvedpolarimpurities,non-polarcomplexeswillbeformedafterthehydrocarbonsareseparated.Iftheneutralizationofpolarimpuritiesisnotcompleteduringalkalinewashing,itwillcausetheformationofnon-polarcomplexes,whichwillleadtodiscolorationofdiesel