Method for preparing residual oil hydro-demetallization catalyst

A technology for hydrogenation and demetallization of residual oil, which is applied in metal/metal oxide/metal hydroxide catalysts, catalyst carriers, chemical instruments and methods, etc. Polarity enhancement, maintaining uniform distribution

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the shaped support has not been roasted, the mechanical strength of the catalyst is not ideal

Method used

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  • Method for preparing residual oil hydro-demetallization catalyst
  • Method for preparing residual oil hydro-demetallization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh the pore volume as 0.9ml / g and the specific surface area as 220m 2 100 grams of γ-phase cylindrical strip-shaped alumina carrier / g is added in the polytetrafluoroethylene liner of the autoclave, and 150 ml of aqueous solution of 228 grams of xylitol (xylitol and Al 3+ The molar ratio is 1:1) and impregnated for 60 minutes. After impregnation, the autoclave was sealed and transferred to an oven for heat treatment at 80°C for 120 minutes, then heated to 180°C, carbonized under autogenous pressure for 9 hours, and naturally cooled to room temperature. The alumina carrier after hydrothermal treatment was dried at 120° C. for 3 hours. The dried carrier was activated in 15wt% hydrogen peroxide at 50°C for 3 hours, and then dried with 150ml of MoO 3 105 grams (molybdenum source comes from ammonium molybdate), NiO 15 grams (nickel source comes from nickel chloride) impregnating the above carrier for 3 hours, filter off the excess solution, and dry at 110°C for 8 hours. ...

Embodiment 2

[0025] With embodiment 1, just aluminum oxide carrier is dissolved with the aqueous solution of 136.5 grams of sorbitol (sorbitol and Al 3+ The molar ratio is 0.5:1) impregnation for 120 minutes, the heat treatment temperature is 130°C, and the heat treatment time is 60 minutes. During the carbonization treatment, the temperature was 200° C., and the carbonization time was 8 hours. The concentration of hydrogen peroxide during activation is 20wt%, the activation temperature is 55°C, and the activation time is 2 hours. Active component impregnation process with 150ml containing MoO 3 85 grams (molybdenum source comes from ammonium molybdate), NiO 10 grams (nickel source comes from nickel nitrate) impregnation solution. The residue hydrodemetallization catalyst C2 of the present invention is obtained.

Embodiment 3

[0027] With embodiment 1, just aluminum oxide carrier is dissolved with the aqueous solution of 81.9 gram mannitols (mannitol and Al 3+Mole is 0.3:1) impregnated for 60 minutes. The heat treatment temperature was 100° C., and the heat treatment time was 90 minutes. During the carbonization treatment, the temperature was 240° C., and the carbonization time was 12 hours. The concentration of hydrogen peroxide during activation is 10wt%, the activation temperature is 60°C, and the activation time is 4 hours. Active component impregnation process with 150ml containing MoO 3 115 grams (molybdenum source comes from ammonium molybdate), NiO 15 grams (nickel source comes from basic nickel carbonate) for impregnation. The residue hydrodemetallization catalyst C3 of the present invention is obtained.

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Abstract

The invention discloses a method for preparing a residual oil hydro-demetallization catalyst. The method comprises the following steps: (1) utilizing a polyhydric alcohol and / or a monosaccharide water solution for impregnation of an alumina carrier, carrying out hydrothermal carbonization treatment in a sealed vessel after the impregnation, and carrying out drying; (2) utilizing hydrogen peroxide for surface modification treatment of the alumina carrier which is hydrothermally carbonized in step (1), carrying out drying, loading the modified alumina carrier with active constituents, and carrying out drying again; (3) utilizing the alumina carrier which is loaded with the active constituents in step (2) for calcination in a nitrogen atmosphere or an inertia atmosphere, and then for calcination again in an oxygen-containing atmosphere to obtain the residual oil hydro-demetallization catalyst. The prepared residual oil hydro-demetallization catalyst is characterized in that the functions of the active constituents and a carrier are relatively poor, and the active constituents are uniformly distributed on the carrier, so that the active constituents are easy to vulcanize, and the demetallization activity and the desulfurization activity of the residual oil hydro-demetallization catalyst are obviously improved.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a preparation method of a residual oil hydrogenation demetallization catalyst. Background technique [0002] At present, the most common hydrogenation catalysts are generally supported catalysts with alumina, silica, etc. as the carrier, and metals such as Co, Ni, Mo, and W as active components. The active components are loaded on the carrier by impregnation or kneading, and then dried and calcined to obtain the catalyst. During the calcination process, the active metal component is easy to interact with the alumina support to form a strong M-O-Al bond, which will cause the active component to form a spinel phase and lose its activity, or prevent the active component from being completely vulcanized, thereby reducing the catalyst activity. . [0003] CN101439289A discloses a method for preparing a hydrogenation catalyst. The metal component of the catalyst is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J32/00C10G45/08
Inventor 马涛凌凤香王少军王敏赵荣林
Owner CHINA PETROLEUM & CHEM CORP
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