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A kind of preparation method of highly active residual oil hydrodemetallization catalyst

A technology for hydrogenation and demetallization of residue oil, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. The effect of improving sulfidation, desulfurization activity, and demetallization activity

Active Publication Date: 2016-01-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Weigh 100 grams (25% water content) of the above-mentioned self-made clover-shaped alumina and transfer it into the polytetrafluoroethylene lining of the autoclave, add 150 ml of the aqueous solution dissolved in 228 grams of xylitol, and make the alcohol and Al 3+ The molar ratio was 1:1, immersion for 60 minutes, the autoclave was sealed and transferred to an oven, sealed at 150°C, heat-treated under autogenous pressure for 9 hours, and cooled to room temperature naturally. The alumina carrier after hydrothermal treatment was dried at 120°C for 3 hours. With 150ml containing MoO 3 105 g, 15 g of NiO impregnating solution impregnated the above-mentioned carrier for 3 hours, filtered off excess solution, dried at 110 ° C for 8 hours, the dried material was first roasted at 550 ° C under nitrogen atmosphere for 5 hours, and then in an air atmosphere at Bake at 350°C for 2 hours. The residue hydrodemetallization catalyst C1 of the present invention is prepared.

example 2

[0025] The same as Example 1, except that the alumina carrier was impregnated with 150 ml of an aqueous solution containing 136.5 grams of sorbitol, so that the alcohol and Al were impregnated. 3+ The molar ratio is 0.5:1, the immersion is 80 minutes, the temperature during heat treatment is 200° C., and the treatment time is 6 hours, so as to prepare the residue hydrodemetallation catalyst C2 of the present invention.

example 3

[0027] The same as Example 1, except that the alumina carrier was impregnated with 150 ml of an aqueous solution containing 81.9 g of mannitol, so that the alcohol and Al were impregnated. 3+ The molar ratio is 0.3:1, the immersion is 90 minutes, the temperature during heat treatment is 175° C., and the treatment time is 12 hours, so as to prepare the residue hydrodemetallation catalyst C3 of the present invention.

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PUM

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Abstract

The invention discloses a preparation method of high-activity hydrodemetalization catalyst for residuum. The method comprises the following steps: (1) dipping a formed alumina carrier with polyol and / or monosaccharide aqueous solution, and conducting hydrothermal carbonization treatment in a sealed container after dipping; (2) drying the alumina carrier subjected to hydrothermal carbonization treatment in the step (1), loading active components Mo and Ni, and then drying again; and (3) roasting the alumina loaded with active components obtained in the step (2) in nitrogen atmosphere, and then roasting in the air atmosphere to finally prepare the hydrodemetalization catalyst for residuum. The active components of the catalyst prepared by the method distributes uniformly on the carrier, have weak interaction with the carrier, and are easy for full sulfuration, so as to significantly improve the metal removal and desulfurization activity of the catalyst.

Description

technical field [0001] The invention 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 carriers, and metals such as Co, Ni, Mo, W, etc. as active components. The active component is 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 easily interacts with the alumina carrier to form a strong M-O-Al bond, which causes the active component to form a spinel phase and lose its activity, or the active component cannot be completely vulcanized, thereby reducing the catalyst activity. . [0003] CN101439289A discloses a preparation method of a hydrogenation catalyst. The catalyst metal component is composed of one or two metal components including Co and Ni and one or two metal components...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883B01J37/02C10G45/08
Inventor 季洪海沈智奇凌凤香王少军杨卫亚王丽华郭长友
Owner CHINA PETROLEUM & CHEM CORP
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