Production of base oil from hydrocarbon charging material, involves performing simultaneous hydrogenation and isomerization of charging material and contact deparaffination of the effluent under specific conditions

摘要

The method involves performing simultaneously hydrogenation and isomerization of charging material containing n-paraffin using a catalyst (I), and contact deparaffination of effluent using a second catalyst (II). Both the steps are performed at specific conditions. The method involves performing: (a) simultaneously hydrogenation and isomerization of charging material containing n-paraffin using a catalyst (I) containing noble metals precipitated on amorphous acid support; and (b) contact deparaffination of the effluent from step (a). The charging material contains less than 1000 ppm of sulfur, less than 200 ppm of nitrogen, less than 50 ppm of metal and 0.2 wt.% or less of oxygen. Step (a) is performed in the presence of hydrogen at 200-500[deg]C, a pressure of 2-25 MPa and a space velocity of 0.1-10/hour. The distribution of noble metal in the first catalyst (I) is 20-100%. Step (b) is performed at 200-500[deg]C, a pressure of 1-25 MPa, a space velocity of 0.05-50/hour and in the presence of a second catalyst (II) containing molecular sieve and hydrogenation-dehydrogenation component, and 50-2000 l of hydrogen per liter of effluent.