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 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 of the above-mentioned self-made clover-shaped alumina (water content 25%) and transfer it to the polytetrafluoroethylene lining of the autoclave, add 150 ml of aqueous solution containing 228 grams of xylitol to it, and make the alcohol and Al 3+ The molar ratio is 1:1, impregnated for 60 minutes, the autoclave is sealed and transferred to an oven at 150°C, heat treated 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. Use 150ml with MoO 3 105 grams, 15 grams of NiO impregnating solution impregnated the above-mentioned carrier for 3 hours, filtered off the excess solution, and dried at 110°C for 8 hours. Baking at 350°C for 2 hours. The residue hydrodemetallization catalyst C1 of the present invention was prepared.

example 2

[0025] With example 1, just alumina support is dissolved with the aqueous solution impregnation of 136.5 gram sorbitols with 150ml, makes alcohol and Al 3+ The mole ratio is 0.5:1, immersion for 80 minutes, heat treatment temperature is 200°C, and treatment time is 6 hours to obtain residue hydrodemetallization catalyst C2 of the present invention.

example 3

[0027] Same as Example 1, except that the alumina carrier is impregnated with 81.9 grams of mannitol in 150ml of aqueous solution, so that alcohol and Al 3+ The mole ratio is 0.3:1, the impregnation is 90 minutes, the temperature during heat treatment is 175°C, and the treatment time is 12 hours to obtain the residual oil hydrodemetallation 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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