Residue hydrodemetallization catalyst and preparation method thereof

A technology of hydrodemetallization and residual oil hydrogenation, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., and can solve the problem of short residence time of reaction molecules in pores , the stability needs to be further improved, and the carrier utilization rate is reduced to achieve the effect of promoting penetration and uniformity, increasing coverage, and enhancing mechanical strength

Active Publication Date: 2022-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the catalyst prepared by this technology has a double pore distribution, the pore size of the large pore part is relatively large, resulting in a short time for the reaction molecules to stay in the pore channel, which reduces the utilization rate of the carrier, and the stability needs to be further improved.

Method used

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  • Residue hydrodemetallization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Weigh 100 grams of activated carbon particles with a particle size of 6 µm, and immerse them with active component impregnation solution I with a molybdenum oxide concentration of 3.30g / 100ml and a nickel oxide concentration of 0.56g / 100ml. The modified physical pore expander was obtained by drying for 4 hours.

[0055] (2) Weigh 200 grams of pseudo-boehmite (made by aluminum sulfate method), step (1) 23.5 grams of modified physical pore expander, 0.4 grams of succulent powder, 1.9 grams of ammonium heptamolybdate, and 2.95 grams of nickel nitrate hexahydrate gram, the above-mentioned physical mixing is uniform, an appropriate amount of acetic acid aqueous solution with a mass concentration of 1.5% is added and kneaded, extruded into strips, and the molded product is dried at 100 ° C for 6 hours, and the dried product is in an air atmosphere, calcined at 600 ° C for 5 hours to obtain modified Alumina support SI.

[0056] (3) Weigh 100 grams of modified alumina carr...

Embodiment 2

[0060] The same as Example 1, except that the particle size of the activated carbon in step (1) is 5 microns, the concentration of molybdenum oxide in the active component impregnation solution I is 3.55 g / 100mL, and the concentration of nickel oxide is 0.45g / 100mL; step (2) modified physical expansion. The addition amount of the pore agent is 27 grams, the addition amount of ammonium heptamolybdate is 1.76 grams, and the nickel nitrate hexahydrate is 2.82 grams; the concentration of the ammonium bicarbonate solution in step (3) is 17.5%, the solution addition amount is 1150 grams, and the sealing pretreatment temperature is 90 °C, the treatment time is 2 hours, the heat treatment temperature is 145 °C, and the treatment time is 7 hours, and the modified alumina carrier SII-2 is obtained. Step (4) MoO in the active component impregnation solution II 3 The hydrodemetallization catalyst Cat2 was prepared with a concentration of 4.7g / 100mL and a NiO concentration of 2.75g / 100mL. T...

Embodiment 3

[0063] Same as Example 1, except that the particle size of the activated carbon in step (1) is 9 microns, the concentration of molybdenum oxide in the active component impregnation solution I is 2.15 g / 100mL, and the concentration of nickel oxide is 0.71g / 100mL; step (2) modified physical expansion The addition amount of the pore agent is 30.8 grams, the addition amount of ammonium heptamolybdate is 2.24 grams, and the nickel nitrate hexahydrate is 2.41 grams; the concentration of the ammonium bicarbonate solution in step (3) is 16.5%, the solution addition amount is 980 grams, and the heat treatment temperature is 125 ℃, the treatment time is 8 hours, and the modified alumina carrier SII-3 is prepared. Step (4) MoO in Active Component Impregnation Solution II 3 The hydrodemetallization catalyst Cat3 was prepared with a concentration of 4.95g / 100mL and a NiO concentration of 3.15g / 100mL. The molybdenum oxide content in the catalyst was 5.34wt% and the nickel oxide content was ...

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Abstract

The invention discloses a residual oil hydrogenation demetallization catalyst and a preparation method thereof. The method includes: (1) impregnating the physical pore-enlarging agent with the impregnating liquid I containing the first active metal component, and then drying to obtain a modified physical pore-enlarging agent; (2) using the modified physical pore-enlarging agent obtained in step (1) The pore expander is kneaded with pseudo-boehmite and the second active metal component source, and then dried and roasted to obtain the modified alumina carrier SI; (3) The modified alumina carrier SI obtained in step (2) is immersed in ammonium bicarbonate solution, and then sealed for heat treatment. After heat treatment, the material is dried and roasted to obtain the modified alumina carrier SII; The aluminum carrier SII is dried and calcined to obtain the hydrodemetallization catalyst. When the hydrodemetallization catalyst prepared by the method is used as a heavy oil hydrodemetallization catalyst, it has high activity and activity stability.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a residual oil hydrodemetallization catalyst and a preparation method thereof. Background technique [0002] With the intensification of crude oil deterioration and heaviness, the efficient conversion of heavy oil and the improvement of the yield of light oil have become an important trend in the development of oil refining technology. Residual oil fixed-bed hydrogenation technology is an effective means to achieve high-efficiency conversion of heavy oil. Using this technical route can effectively remove impurities such as metals, sulfur, nitrogen and carbon residues in the residual oil, provide high-quality feed for catalytic cracking, and meet stricter environmental regulations while increasing the production of light oil products. In the process of heavy oil processing, the metal compounds in it will be decomposed, and the metal impurities will be deposited on the inner an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J23/883B01J35/10C10G45/08
CPCB01J27/19B01J23/883B01J23/002B01J35/1019B01J35/1042B01J37/0018C10G45/08C10G2300/1037C10G2300/202B01J2523/00B01J2523/31B01J2523/68B01J2523/847
Inventor 韩博季洪海凌凤香张会成王少军
Owner CHINA PETROLEUM & CHEM CORP
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