Patent application number | Description | Published |
20100051509 | Halogen-free ionic liquids in naphtha desulfurization and their recovery - Ionic liquids of the general formula C | 03-04-2010 |
20110215052 | Process of recovery of exhausted ionic liquids used in the extractive desulfurization of naphthas - A process for recovering ionic liquids comprising the steps of: providing a first ionic liquid mixture, the first ionic liquid having a halogen metallate anion, the mixture containing an organic solvent; adjusting the pH of the mixture to pH 7-10 by the addition of a base to form a first precipitate; separating the first precipitate from the mixture; removing the organic solvent from the first mixture to form a second precipitate and separating the second precipitate from the first mixture; acidifying the resulting mixture to pH 2-7 by the addition of an acid; and drying the mixture to obtain a second ionic liquid having a halogen anion. | 09-08-2011 |
20120318714 | Ionic liquid catalyst for the improvement of heavy crude and vacuum residues - Heavy crude oil residue and vacuum residue is upgraded using an ionic liquid catalyst formulated with metals of Group VIB and VIIIB of the periodic table, which catalyst is highly miscible in the hydrocarbon phase. The combination of different metals and acidity from the protons that make up the ionic liquid breaks the links C—S, C—N and C—O of the resins and asphaltenes and increases API gravity, decreases viscosity, removes sulfur and nitrogen compounds, and results in conversion of 50 to 70% of the waste oil and heavy crude oil into lighter distillates. | 12-20-2012 |
20130118955 | DESULFURIZATION OF HYDROCARBONS BY IONIC LIQUIDS AND PREPARATION OF IONIC LIQUIDS - The present invention relates to an improved desulfurization process using an ionic liquid compound of general formula C | 05-16-2013 |
20140367098 | HYDROPHOBIC COMPOUND EMULSIONS FREE OF SILICON AND FLUORINE FOR AN OIL RECOVERING METHOD THAT MODIFIES THE WETTABILITY OF ROCKS FROM HYDROPHILIC TO OLEOPHILIC - An oil recovery method by the modification of the rock wettability from hydrophilic to oleophilic using hydrophobic compounds. Specifically, the method relates to the application of oil-type emulsions in water based on hydrophobic compounds free of silicon and fluorine to increase the oil recovery in mature sandstone-type reservoirs after the injection of water. | 12-18-2014 |
20150027928 | Ionic liquids, methylcarbonate- or carboxylates-based, obtaining process and use thereof - Methylcarbonate-based ionic liquids (LIs) or carboxylates, derived from aliphatic or aromatic carboxylic acids are provided for the extraction of nitrogen compounds from hydrocarbon mixture (HCs) by liquid-liquid selective extraction, at room temperature and atmospheric pressure, where the LIs are immiscible with the HCs. This process is performed through an extraction by stifling two phases, followed by separation, or in a continuous flow system where the nitrogenous compounds are transferred to the phase formed by the LI and the total nitrogen content is substantially reduced in the HCS phase. The ionic liquids have the general formula C+A−, where:
| 01-29-2015 |