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1、活性半焦用于油田含油污水除油的研究第4卷第2期2010年2月Vo1.4.No.2Feb.2010活性半焦用于油田含油污水除油的研究张建侯影飞周洪洋李春虎(1.胜利油田胜利勘察设计研究院,东营257026;2.中国海洋大学海洋化学理论与工程技术教育部重点实验室,青岛2661003.中国海事局烟台溢油应急技术中心,烟台264000))摘要以经济廉价的半焦为原料,制备用于处理油田含油污水的吸附剂.采用高温焙烧活化,水蒸气活化,高压水热活化以及硝酸,氢氧化钾活化等方法对半焦进行活化处理,通过静态吸附实验测定除油率来评价活化效果,重点讨论
2、了氢氧化钾活化条件对除油效果的影响.结果表明:KOH与半焦质量比为6:1,8O℃浸渍3h,550oC焙烧1.5h时,制备的活性半焦吸附除油效果最好,除油率可以达到75.6%;活性半焦对油的吸附符合Freundlich吸附方程.利用酸碱滴定法对样品表面酸碱官能团进行分析,发现K0H活化后半焦表面碱性亲油官能团明显增多;通过SEM对半焦的微观结构进行分析,发现KOH活化后半焦产生大量有利于吸附的孔结构.关键词含油污水活性半焦吸附除油中图分类号X703文献标识码A文章编号1673—9108(2010)02—0355—05Studyon
3、oilremovalfromoilfieldwastewaterusingactivatedsemicokeZhangJianHouYingfei?ZhouHongyangLiChunhu(1.ShengliEngineeringDesignandConsultingCompanyLtd.,SINOPEC,Dongying257026,China;2.KeyLaboratoryofMarineChenfistryTheoryandTechnology,MinistryofEducation,CollegeofChemistrya
4、ndChemicalEngineering,OceanUniversityofChina,Qingdao266100,China;3.YantaiOilSpillResponseTechnicalCenter,ChinaMaritimeSafetyAdministration,Yantai264000,China)AbstractThecheapsemicokewaschosenastherawmaterialtopreparesorbentsofoilremovalfromoil—fieldwastewater.Differe
5、ntmodificationmethodstorawsemicokewereperformedasfollowed:calcinationinN,atmosphere,steamactivation,high—pressurehydrothermalchemicalactivation,HNO3andK0Hactivation.Theactivationeffectwasevaluatedbydeterminationoftheoilremovalrateandbymeansofstaticadsorptionexperi—me
6、nt.Theeffectsofconditionsofpotassiumhydroxideactivationontheoi1remova1ratewereinvestigatedem—phatically.TheresultsshowedthattheoptimumoilremovalrateobtainedcouldbeuDto75.6%whenthesemi—cokeactivatedbyKOHundertheoptimalconditionsofmassratioofKOH/semicoke6:1,impregnatin
7、gattem—peratureof80℃for3handcalciningattemperatureof550℃for1.5h.Thesorptionofoi1tothemodifiedsemicokefittedcloselytoFreundlichequation.Anevidentincreaseofthebasicityfunctionalgroupcontentcouldbeobservedaccordingtotitrationofsurfaceacidityandbasicity.ItwasfoundbySEMan
8、alysisthatalargenun—berofporecanalwhichwasbeneficialtoadsorptionformedinsemicoke.Keywordsoilywastewater;activatedsemicoke;adsorptio
