Preparation method of high-activity hydrodemetalization catalyst for residuum

A technology for hydrogenation and demetallization of residual oil, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problems of unsatisfactory mechanical strength of catalysts, and achieve easy Effects of vulcanization, desulfurization activity improvement, and demetallization activity improvement

Active Publication Date: 2014-05-14
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 roaste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

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

Example Embodiment

[0024] Example 2

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

Example Embodiment

[0026] Example 3

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

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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 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 composed of one or two of Co and Ni and one or two of Mo and W, us...

Claims

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Application Information

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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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