Vacuum gas oil hydrofinishing catalyst carrier and method for preparing it (options)

摘要

1. A catalyst carrier for hydrofining a vacuum gas oil containing 30-80 wt.% Alumina in the form of boehmite or pseudoboehmite and 20-70 wt.% Alumina obtained by pretreating aluminum hydroxide with a 1-7% nitric acid solution at a solution temperature of 5 -10 ° C and dried by spraying in a stream of hot air at a temperature of 190-210 ° C to obtain particles, 80% of which are smaller than 45 microns, while the carrier has a pore volume of 0.54-0.70 cm / g and the coefficient mechanical strength 2.6-3.5 kg / mm. 2. A method of preparing a carrier of a vacuum gas oil hydrofining catalyst according to claim 1, comprising peptizing aluminum hydroxide with a solution of nitric acid, introducing a pore-forming agent, mixing and molding the mixture into granules, drying and calcining, characterized in that 20-70 wt.% Aluminum hydroxide is treated with 1- 7% solution of nitric acid at a solution temperature of 5-10 ° C and dried by spraying in a stream of hot air at a temperature of 190-210 ° C to obtain particles, 80% of which are smaller than 45 microns, mixed with 30-80 m C.% aluminum hydroxide in the form of boehmite or pseudoboehmite, suspended, the resulting mixture is peptized with a 2-10% solution of nitric acid, the pore-forming agent polymethylsilaxane is added in an amount of 0.03-0.09 ml / g, mixed until a homogeneous mass is obtained, molded into granules, dried and calcined. 3. A carrier of a vacuum gas oil hydrofining catalyst containing alumina and silica, characterized in that it contains 27.3-49.6 wt.% Alumina and 2.7-31.4 silica in the form of a mesoporous aluminosilicate with a SiO mass ratio: AlO = 0.1: 0.65, while the carrier contains, wt.%: Has a pore volume of 0.57-1.02 cm / g and a coefficient of mechanical strength of 2.7-4.0 kg / mm. 4.