Process for the preparation of lubricating base oils
AssigneeShell Oil Company
InventorsPierre Grandvallet, Daniel G. P. Allais, Pierre E. J. G. Dejaifve
Life of this patent
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Abstract
A process for the preparation of a lubricating base oil, comprising treating a hydrocarbonaceous product with hydrogen, at elevated temperature and pressure and in the presence of a catalyst, which hydrocarbonaceous product has been prepared by contacting hydrocarbons and/or derivatives thereof with an active hydrogen-containing system by a process which comprises generating a hydrogen-containing plasma and allowing contact of the hydrocarbons and/or derivatives thereof in liquid form with the plasma-generated system and recovering the hydrocarbonaceous product.
Claims18
A process for the preparation of a lubricating base oil, comprising treating a hydrocarbonaceous product with hydrogen, under hydrogenation conditions at an elevated temperature and pressure and in the presence of a catalyst, which hydrocarbonaceous product has been prepared by contacting hydrocarbons, having a viscosity index of at least 140, and/or derivatives thereof with an active hydrogen-containing system by a process which comprises generating a hydrogen-containing plasma and allowing contact of the hydrocarbons and/or derivatives thereof in liquid form with the plasma-generated system and recovering the hydrocarbonaceous product, and wherein a lubricating base oil having a substantially unchanged viscosity index from said hydrocarbonaceous product is recovered from said treating with hydrogen in the presence of a catalyst.
A process for the preparation of a lubricating base oil, comprising treating a hydrocarbonaceous product with hydrogen, at a temperature from about 150.degree. C. to about 300.degree. C. and a hydrogen partial pressure from about 40 bar absolute to about 140 bar absolute, wherein said hydrocarbonaceous product is provided at a space velocity of from 0.2 kg/l/h to about 2 kg/l/h, and in the presence of a catalyst comprising cobalt, nickel, molybdenum, or tungsten, which hydrocarbonaceous product has been prepared by contacting a lubricating base oil comprising functional groups, and having a viscosity index of at least 140, with an active hydrogen-containing system by a process which comprises generating a hydrogen-containing plasma and allowing contact of the hydrocarbons and/or derivatives thereof in liquid form with the plasma-generated system and recovering the hydrocarbonaceous product, and wherein a lubricating base oil having a substantially unchanged viscosity index from said hydrocarbonaceous product is recovered from said treating with hydrogen in the presence of a catalyst.
Dependencies are inferred from the claim text.