SOLVENT REFINING PROCESS OF A LUBRICATING OIL FRACTION USING N-METHYL-2-PYRROLIDONE

摘要

P SOLVENT REFINING PROCESS OF A LUBRICATING OIL FRACTION IN WHICH THE FRACTION RICH IN AROMATIC PRODUCTS IS SEPARATED FROM A LIQUID HYDROCARBON FEED MIXTURE HAVING A BOILING POINT RANGE EXCEEDING THE POINT D BOILING OF N-METHYL-2-PYRROLIDONE AND COMPRISING AROMATIC HYDROCARBONS AND NON-AROMATIC HYDROCARBONS. A SOLVENT-RICH PHASE DESCENDES INTO THE EXTRACTION TOWER 2 BY FORMING A MIXTURE PRIMARY EXTRACTION RICH IN AROMATIC AND UNSATURATED PRODUCTS EXTRACTED FROM THE PRODUCT OF FOOD, THIS MIXTURE IS EXTRACTED FROM THE BOTTOM OF THE EXTRACTION TOWER 2 BY THE DUCT 4. A PHASE RICH IN OIL MOUNTED INSIDE THE TOWER EXTRACTION 2 AND EXCEEDED FROM THE EXTREMITY OF EXTRACTION TOWER 2 BY DUCT 5 AS A PRIMARY MIXTURE OF RELATIVELY POOR N-METHYL-2-PYRROLIDONE REFINED AND RICH IN PARAFFINIC COMPOUNDS. / P