Patent ID: 6156190
Filing Date: 2000-12-05
Classification: B01J,C10G

Abstract:
A conversion process of hydrocarbon oils comprising at least a hydrodemercaptanization process which comprises contacting a feedstock having a total sulfur content not higher than 0.35 wt %, a mercaptan sulfur content higher than 20 ppm with a hydrofining catalyst under the conditions of the hydrodemercaptanization process and recovering a product having a decreased mercaptan sulfur content, wherein the conditions of said hydrodemercaptanization involve a H/oil volume ratio not less than 5, and that said hydrofining catalyst comprises a tungsten oxide and/or a molybdenum oxide, a nickel oxide and a cobalt oxide supported on an alumina carrier, in which, based on the weight of the catalyst, the content of said tungsten oxide and/or molybdenum oxide is from 4 wt % to less than 10 wt %, the content of nickel oxide is 1 to 5 wt %, the content of cobalt oxide is 0.01-1 wt % and the ratio of the total atom number of nickel and cobalt to that of nickel, cobalt, tungsten and/or molybdenum is 0.3 to 0.9.