Breaking of Water-in-Crude Oil Emulsions. 5. Effect of Acid-Alkaline Additives on the Performance of Chemical Demulsifiers

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• 作者：Iris Silva ; Belsay Borges ; Ronald Blanco ; Miguel Rond贸n ; Jean-Louis Salager ; Juan C. Pereira
• 刊名：Energy & Fuels
• 出版年：2014
• 出版时间：June 19, 2014
• 年：2014
• 卷：28
• 期：6
• 页码：3587-3593
• 全文大小：332K
• 年卷期：v.28,no.6(June 19, 2014)
• ISSN：1520-5029

文摘

The objective is to understand the effects of organic acid and amine additives on the performance of commercial demulsifiers in breaking water-in-crude-oil (W/O) emulsions, according to the proportional regime test developed in previous articles. Both hydrophilic (ethylamine and acetic acid) and hydrophobic (hexanoic acid and hexylamine) species were tested, and all were found to exhibit different effects. The water-soluble species have essentially no effect, despite a change in aqueous phase pH. Hexanoic acid was found to increase the stability of the W/O emulsions, whereas the hexylamine was found to reduce it. Explanations of the effect of these additives on the interfacial formulation are proposed.