Demulsification of Heavy Crude Oil Emulsions Using Ionic Liquids

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• 作者：Elis芒ngela B. Silva ; Denisson Santos ; Douglas R. M. Alves ; Milson S. Barbosa ; Regina C. L. Guimar茫es ; Bianca M. S. Ferreira ; Ricardo A. Guarnieri ; Elton Franceschi ; Cl谩udio Dariva ; Alexandre F. Santos ; Montserrat Fortuny
• 刊名：Energy & Fuels
• 出版年：2013
• 出版时间：October 17, 2013
• 年：2013
• 卷：27
• 期：10
• 页码：6311-6315
• 全文大小：245K
• 年卷期：v.27,no.10(October 17, 2013)
• ISSN：1520-5029

文摘

The use of ionic liquids (ILs) as demulsifiers of water-in-crude oil emulsions represents a new field of study. The main purpose of this work is to investigate the effect of five ILs, [Cb>4b>mim]⁺[NTfb>2b>]^{鈭?/sup>, [Cb>8b>mim]+[NTfb>2b>]鈭?/sup>, [Cb>12b>mim]+[NTfb>2b>]鈭?/sup>, [Cb>4b>py]+[NTfb>2b>]鈭?/sup>, and [Cb>8b>mim]+[ [OTf]鈭?/sup>, and a set of operation parameters on the demulsification process, including the heating type (conventional and microwave), IL concentration (0.74鈥?.9 渭mol/g), effect of alkyl chain length, and effect of cation and anion type on demulsification efficiency. The results indicated that the demulsification was favored when more hydrophobic ILs and longer cation alkyl chains were employed, such as [Cb>12b>mim]+[NTfb>2b>]鈭?/sup>, reaching values close to 92% of water removal. Moreover, the joint use of microwaves and hydrophobic ILs allowed us to maximize the demulsification efficiency.}