Enhancing oil-solid and oil-water separation in heavy oil recovery byCO(2)-responsive surfactants

Lu, Yi1; Li, Rui1; Manica, Rogerio1; Liu, Qingxia1; Xu, Zhenghe1,2

2020-09-24

10.1002/aic.17033

AICHE JOURNAL   影响因子和分区

0001-1541

1547-5905

Interfacial properties are of critical importance to various separation applications. In heavy oil recovery, for example, a low oil-water interfacial tension (IFT) benefits the separation of heavy oil from their host rocks, which becomes problematic in the later stage of oil-water separation. CO2-responsive surfactants were investigated to enhance the overall heavy oil recovery by switching their interfacial activity to the desired state in each stage. The surfactants at interfacially active state greatly enhanced the separation of heavy oil from hosting solids, as demonstrated by measuring contact angle and oil liberation using a custom-designed on-line visualization system. Meanwhile, the resulting heavy oil-in-water emulsions could also be easily demulsified by the bubbling of CO(2)gas, which switched off the interfacial activity of the surfactants. Furthermore, CO2-responsive surfactants could be partially recycled in process water to improve sustainability, making CO2-responsive surfactants to be promising chemical aids in heavy oil production and many other vital industries.

CO2-responsive surfactant POLY(N-ISOPROPYLACRYLAMIDE) MICROGELS heavy oil recovery BITUMEN LIBERATION oil-solid separation SANDS ORES oil-water separation INTERFACE switchable emulsion DISPLACEMENT REMEDIATION ADSORPTION RESISTANCE PETROLEUM OXIDATION

SCI ; EI

英语

通讯

Leading Talents Program of Guangdong Province[K17253301] ; National Natural Science Foundation of China[21938003]

Engineering

Engineering, Chemical

WOS:000572186000001

WILEY

20203909236681

Heavy oil production ; Crude oil ; Emulsification ; Contact angle ; Separation ; Carbon dioxide ; Enhanced recovery ; Emulsions

Oil Field Production Operations:511.1 ; Petroleum Deposits:512.1 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2

CHEMISTRY

Web of Science

1.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada;
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen, Peoples R China

Lu, Yi,Li, Rui,Manica, Rogerio,et al. Enhancing oil-solid and oil-water separation in heavy oil recovery byCO(2)-responsive surfactants[J]. AICHE JOURNAL,2020,67(1).

Lu, Yi,Li, Rui,Manica, Rogerio,Liu, Qingxia,&Xu, Zhenghe.(2020).Enhancing oil-solid and oil-water separation in heavy oil recovery byCO(2)-responsive surfactants.AICHE JOURNAL,67(1).

Lu, Yi,et al."Enhancing oil-solid and oil-water separation in heavy oil recovery byCO(2)-responsive surfactants".AICHE JOURNAL 67.1(2020).