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ID:41390478
大小:1.25 MB
页数:11页
时间:2019-08-23
《疏水性油水分离膜及其过程研究进展》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、化工进展·3082·CHEMICALINDUSTRYANDENGINEERINGPROGRESS2014年第33卷第11期进展与述评疏水性油水分离膜及其过程研究进展11211杨振生,李亮,张磊,王志英,李柏春12(河北工业大学化工学院,天津300130;河北冀衡(集团)药业有限公司,河北衡水053000)摘要:油水分离是治理含油废水和含水油液的重要工业过程。本文概括了疏水性油水分离膜的类型与制备方法,包括常规分离膜和高度疏水/超亲油分离膜。前者为常规微滤、超滤及纳滤过程用膜;后者由构筑高度疏水(水滴接触角≥120°)表面方法得到,形式有金属网膜、纤维膜、滤纸、复合膜及不对称膜,其
2、为制备耐污染的疏水性油水分离膜提供了新思路。指出了疏水性膜用于油水分离的过程原理及应用现状:含油废水除油中,疏水性膜可实现O/W乳液的破乳、粗粒化油滴、滤除油滴及吸附油分子几方面的功能;含水油液除水中,膜被用来截留水滴,可直接得到净化的油品。最后,指出了其过程规模化应用前尚需解决的重要问题,特别是高度疏水/超亲油分离膜的制备、相关过程研究的深入及其规模化试验等方面需着力加强。关键词:膜;油;废水;分离;高度疏水;超亲油中图分类号:TQ028.8;X703文献标志码:A文章编号:1000–6613(2014)11–3082–08DOI:10.3969/j.issn.1000-661
3、3.2014.11.041Progressofhydrophobicmembraneandprocessforoil/waterseparation11211YANGZhensheng,LILiang,ZHANGLei,WANGZhiying,LIBaichun1(SchoolofChemicalEngineeringandTechnology,HebeiUniversityofTechnology,Tianjin300130,China;2HebeiJiheng(Group)PharmaceuticalCompanyLimited,Hengshui053000,Hebei,Ch
4、ina)Abstract:Thispapersummarizedthetypesofhydrophobicporousmembraneforoil/waterseparation,includingconventionalmembranesandhighlyhydrophobic/superolephilicmembranes.Conventionalmembranesareformicrofiltration,ultrafiltrationandnanofiltrationprocesscurrently.Withgreaterwatercontactangle(≥120°),
5、thehighlyhydrophobic/superolephilicmembranehavehighlyhydrophobicsurfaceandcovermodifiedmeshes,modifiedfibers,modifiedfilterpaper,compositemembranesandasymmetrymembranes.Itispossiblethatthefoulingresistantmembraneforoil/waterseparationliesonhighlyhydrophobic/superolephilicmembranes.Principlesa
6、ndcurrentapplicationsofoil/waterseparationprocesswithhydrophobicmembranewerediscussed.Indispositionprocessofoilywastewater,themembranestakepartindemulsificationofO/Wemulsion,coalescenceofoildroplets,filtrationofoildropletsandadsorptionofoilmoleculesrespectively.Inpurificationprocessofwateryoi
7、l,themembranesactasselectivemedia,wherecontinuousoilphaseispermeatedandwaterdropletsisrejected.Thepreparationofhighlyhydrophobic/superolephilicmembranes,thesystematicinvestigationtooil/waterseparationprocessandthelargescaletestswithindustrial
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