Reducción de la acidez de un crudo de petróleo con una solución alcohólica de líquido iónico 2-metilimidazol

Abstract

The objective of the investigation was the reduction of the acidity of a Colombian crude (Total Acid Number (TAN) of 4,9 mg KOH/ g crude) utilizing an ionic liquid formed in-situ with ethanolic solution 2-methylimidazole to extract the acid compounds. Experimental designs were realized 2[3] with a point and a half and triplicated whose independent variables were: relationship crude: reactives, in between reactives (2-methylimidazole: Ethanol) and the period; the dependent variable was the percentage of the reduction of acidity. The best conditions for the majority acid extraction were: a relationship between crude: reactive (1: 0,2 w: w), a relation 2-methylimidazole: ethanol at (20% w/v), and an agitation period of 3 minutes. The maximum acidity removal percentage was 83%. The 2-methylimidazole demonstrated to be an alternative organic base for the reduction of the acidity mixture of oil, substituting the inorganic bases commonly utilized that generated problems like emulsions and loss of oil. The ethanol was an excellent solvent due to the acid mixture was soluble in it and there was no loss of oil in the process.

Keywords

• Crude
• naphtenic acids
• tan.