Residual oil hydrodemetallization catalyst and preparation method thereof

A technology for hydrodemetallization and residue hydrogenation, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., and can solve the problem that the reaction molecules stay in the pores for a short time. , the stability needs to be further improved, the carrier utilization rate is reduced, etc., to achieve the effect of promoting penetration and uniformity

Active Publication Date: 2020-05-05
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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  • Residual oil 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 impregnate them with active component impregnation solution I with a concentration of molybdenum oxide of 3.30g / 100ml and a concentration of nickel oxide of 0.56g / 100ml. The modified physical pore expander was obtained by drying for 4 hours.

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

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

Embodiment 2

[0060] Same as Example 1, except that step (1) the particle size of activated carbon is 5 microns, the concentration of molybdenum oxide in the active component impregnation solution I is 3.55g / 100mL, and the concentration of nickel oxide is 0.45g / 100mL; step (2) modified physical expansion The addition of pore agent is 27 grams, the addition 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%, and the addition of the solution is 1150 grams. The temperature is 90°C, the treatment time is 2 hours, the heat treatment temperature is 145°C, and the treatment time is 7 hours to prepare the modified alumina carrier SII-2 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. The content of molybdenum oxide in the catalyst was 5.65wt%, a...

Embodiment 3

[0063] Same as Example 1, except step (1) the particle size of activated carbon is 9 microns, the concentration of molybdenum oxide in the active component impregnation solution I is 2.15g / 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 support SII-3 is prepared. Step (4) MoO in the 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 content of molybdenum oxide in the catalyst was 5.34wt%, and the content of nickel oxide was 3....

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Abstract

The invention discloses a residual oil hydrodemetallization catalyst and a preparation method thereof. The method comprises the following steps: (1) impregnating an impregnation liquid I containing afirst active metal component in a physical pore-enlarging agent, and then drying to prepare a modified physical pore-enlarging agent; (2) mixing, kneading and molding the modified physical pore-enlarging agent obtained in the step (1), pseudo-boehmite and a second active metal component source, drying and roasting to obtain a modified aluminum oxide carrier SI; (3) immersing the modified alumina carrier SI obtained in the step (2) into an ammonium bicarbonate solution, then carrying out sealed heat treatment, and drying and roasting a material obtained through heat treatment to obtain a modified alumina carrier SII; and (4) impregnating the modified alumina carrier SII obtained in the step (3) with an impregnation liquid II containing a third active component, and carrying out drying and roasting so as to obtain the hydrodemetallization catalyst. The hydrodemetallization catalyst prepared by the method has high activity and activity stability when used as a heavy oil hydrodemetallization catalyst.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a residual oil hydrogenation demetallization 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 products have become an important trend in the development of refining technology. The fixed bed hydrogenation technology of residual oil is an effective means to realize the efficient conversion of heavy oil. Adopting this technical route can effectively remove impurities such as metals, sulfur, nitrogen and residual carbon in residual oil, provide high-quality feed for catalytic cracking, and meet stricter environmental protection regulations while increasing production of light oil products. In the process of heavy oil processing, the metal compounds in it will decompose, and the metal impurities will deposit...

Claims

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Application Information

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Patent Type & Authority Applications(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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