点击次数：
论文类型：期刊论文
发表时间：2018-11-01
发表刊物：JOURNAL OF MOLECULAR LIQUIDS
收录刊物：SCIE
卷号：269
页面范围：23-28
ISSN号：0167-7322
关键字：CO2; Non-ionic surfactant; Extraction; Material exchange
摘要：The effects of some designed non-ionic surfactants (Guerbet alkyl polyoxyethylene ethers and linear alkyl polyoxyethylene ethers) on the exchange of materials between crude oil and scCO(2) were investigated at 359 K. The efficiency of the surfactants was demonstrated by extraction tests, volume change rate tests and compositional analysis of the produced oil. Firstly, extraction tests have shown that the addition of these surfactants can help scCO(2) extract more crude oil. Secondly, adding these surfactants significantly increased the volume change rate of the oil droplets. At 15 MPa, the addition of C16(3) increased the volume change rate from 15.862% to 20.165%, indicating more materials were extracted from the oil drop. Finally, by analyzing the recovered oil content, we found that surfactants can promote the exploitation of crude oil. C16(3) + CO2 can recover more short-chain alkanes (C5-C20) than CO2. (C) 2018 Elsevier B.V. All rights reserved.