DOI: 10.1016/j.jcou.2018.05.012
Scopus记录号: 2-s2.0-85047151559
论文题名: Use CO2-Triggered switchable water additive to reversibly emulsify and demulsify diesel
作者: Wang S. ; Liu D. ; Zhao J. ; Li X. ; Xu D. ; Gu Y. ; Lu H.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 239
结束页码: 245
语种: 英语
英文关键词: Carbon dioxide
; Diesel emulsion
; Recyclable
; Switchable water additive
Scopus关键词: Carbon dioxide
; Demulsification
; Emulsification
; Infill drilling
; Nuclear magnetic resonance
; Rock drills
; Solutions
; Environmental friendly methods
; Optimization strategy
; Possible mechanisms
; Provide guidances
; Recyclable
; Surface activities
; Switching performance
; Water additives
; Ionic strength
英文摘要: In this paper, a practical and environmental friendly method was successfully developed by using CO2-Triggered switchable water additive to reversibly emulsify and demulsify diesel, aims to provide guidance for recovering oil substances in waste oil-based drill cuttings. In this new method, N, N, N', N'-tetramethyl-1, 6-hexanediamine(TMHDA) was a switchable water additive whose aqueous solution can switch the ionic strength by addition and removal CO2. Then it can be used to separate diesel through reversibly emulsification and demulsification. The nuclear magnetic resonance hydrogen spectrum (1H NMR) and conductivity demonstrated TMHDA have better switching performance. Then, diesel/naphthenic acid mixtures have been used for modeling the application of recovering oil substances in waste oil-based drill cuttings. When the acid value≥1.76mgKOH/g (the oil and TMHDA solution were 5mL), diesel can be emulsified. The material produced by TMHDA and naphthenic acid have a strong surface activity so that the oil/water interfacial tension was less than 0.1mN·m-1. The demulsification performance was illustrated by change of the ionic strength, pH and the content of oil in the aqueous phase during the breaking process. Brief provided two optimization strategies of recycling of TMHDA additive. Finally, the possible mechanism of the new method was discussed. © 2018 Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111857
Appears in Collections: 气候减缓与适应
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作者单位: College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, 610500, China; Engineering Research Center of Oilfield Chemistry, Southwest Petroleum University, Ministry of Education, Chengdu, 610500, China
Recommended Citation:
Wang S.,Liu D.,Zhao J.,et al. Use CO2-Triggered switchable water additive to reversibly emulsify and demulsify diesel[J]. Journal of CO2 Utilization,2018-01-01,26