Study of Oil/Water Interfacial Tension of Vacuum Residual Fractions from Iranian Light  Crude Oil

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Study of Oil/Water Interfacial Tension of Vacuum Residual Fractions from Iranian Light
Crude Oil

PENG Bo; LI Mingyuan; ZHAO Suoqi; WU Zhaoliang; Johan Sjoblom; Harald Hoiland

^a State Key Laboratory of Heavy Oil Processing, University of Petroleum, Beijing, 102249,
China
^b Department of Chemistry,University of Bergen,Allegate 4l,5007,Bergen,Norway

Received:1900-01-01 Revised:1900-01-01 Online:2003-12-28 Published:2003-12-28
Contact: PENG Bo

伊朗轻质原油减渣馏分油水界面张力的研究

彭勃^a,b; 李明远^a; 赵锁奇^a; 吴肇亮^a; Johan Sjoblom^b; Harald Hoiland^b

^a State Key Laboratory of Heavy Oil Processing, University of Petroleum, Beijing, 102249,
China
^b Department of Chemistry,University of Bergen,Allegate 4l,5007,Bergen,Norway

通讯作者: 彭勃

Abstract

Abstract: The vacuum residual from Iranian Light crude oil are separated into a series of 16 narrow
fractions according to the molecular weight by the supercritical fluid extraction and
fractional(SFEF)technologY.The chemical element and the UV spectrum of each fraction are
analyzed.The efiects of severalfactors on the interfacial tension are investigated,which
are the fraction concentration in oil phase,the ratio of oil component,the salts dissolved
in the water phase and the pH valne.The interfacial tension decreazes rapidly as the
concentration of the residual fraction in the oil increases,showing a higher interfacial
activity ofthe fraction.The interfacial tension changes,as the amount of absorption or the
state ofthe fractions in the interface changes resulting from difierent ratios of
oil,difierent kinds or concentratiohs of salts in water,and difierent pH values.It is
concluded that the interfacial tension changes regularly,corresponding to the regular
molecular parameters of the vacuum residual fractions.

Key words: crude oil emulsion, interfacialtension, vacuum residual, supercritical fluid extraction and fractionation

摘要： The vacuum residual from Iranian Light crude oil are separated into a series of 16 narrow
fractions according to the molecular weight by the supercritical fluid extraction and
fractional(SFEF)technologY.The chemical element and the UV spectrum of each fraction are
analyzed.The efiects of severalfactors on the interfacial tension are investigated,which
are the fraction concentration in oil phase,the ratio of oil component,the salts dissolved
in the water phase and the pH valne.The interfacial tension decreazes rapidly as the
concentration of the residual fraction in the oil increases,showing a higher interfacial
activity ofthe fraction.The interfacial tension changes,as the amount of absorption or the
state ofthe fractions in the interface changes resulting from difierent ratios of
oil,difierent kinds or concentratiohs of salts in water,and difierent pH values.It is
concluded that the interfacial tension changes regularly,corresponding to the regular
molecular parameters of the vacuum residual fractions.

关键词: crude oil emulsion;interfacialtension;vacuum residual;supercritical fluid extraction and fractionation

PENG Bo, LI Mingyuan, ZHAO Suoqi, WU Zhaoliang, Johan Sjoblom, Harald Hoiland. Study of Oil/Water Interfacial Tension of Vacuum Residual Fractions from Iranian Light
Crude Oil[J]. .

彭勃, 李明远, 赵锁奇, 吴肇亮, Johan Sjoblom, Harald Hoiland. 伊朗轻质原油减渣馏分油水界面张力的研究[J]. CIESC Journal.

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