A kind of residue hydrodemetallization catalyst and preparation method thereof

A residue hydrogenation and catalyst technology, which is used in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, catalyst carrier, etc. Reduce carrier utilization and other issues, to achieve the effect of promoting penetration and uniformity, improving 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 method has a double pore distribution, the pore size of the large pores is relatively large, resulting in a short time for the reaction molecules to stay in the pores, reducing the utilization rate of the carrier, and the stability needs to be further improved.

Method used

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  • A kind of residue hydrodemetallization catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Weigh 29 grams of activated carbon particles with a particle size of 8 µm, 280 grams of pseudo-boehmite (produced by Shandong Aluminum Industry Co., Ltd.), 0.6 grams of asparagus powder, 3.8 grams of ammonium heptamolybdate, and 5.4 grams of nickel nitrate hexahydrate , 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 700 ° C for 5 hours.

[0056] (2) Weigh 100 grams of the material in step (1), place 730 grams of ammonium bicarbonate solution with a mass concentration of 21.5%, and transfer the mixture into the autoclave to seal and be heated to 95°C at a speed of 15°C / min. After constant temperature for 3 hours, the temperature was raised to 130°C for 5.5 hours at a rate of 10°C / min, then the carrier was dried at 100°C for ...

Embodiment 2

[0060] The same as in Example 1, except that the particle size of the activated carbon in step (1) is 6 microns, and the amount of activated carbon added is 24 grams. The addition amount of ammonium heptamolybdate is 3.4 grams, and the nickel nitrate hexahydrate is 8.3 grams; the mass concentration of the ammonium bicarbonate solution in step (2) is 24.5%, the solution addition amount is 620 grams, the sealing pretreatment temperature is 100 ° C, and the treatment time is After 2 hours, the heat treatment temperature was 140°C, and the treatment time was 6 hours to obtain the modified alumina carrier S-2. Step (3) MoO in the active component impregnation solution 3 The hydrogenation demetallization catalyst Cat2 was prepared with a concentration of 7.1g / 100mL and a NiO concentration of 2.6g / 100mL. The content of molybdenum oxide in the catalyst was 8.3wt% and the content of nickel oxide was 3.4wt%.

[0061]The properties of catalyst Cat2 are shown in Table 1. In the modified...

Embodiment 3

[0063] The same as Example 1, except that the particle size of the activated carbon in step (1) is 9 microns, and the amount of activated carbon added is 21 grams. The addition amount of ammonium heptamolybdate is 2.9 grams, and the nickel nitrate hexahydrate is 7.2 grams; the mass concentration of the ammonium bicarbonate solution in step (2) is 16.5%, the solution addition amount is 1100 grams, the heat treatment temperature is 120 ° C, and the treatment time is 7.5 hours , the modified alumina carrier S-3 was obtained. Step (3) MoO in the active component impregnation solution 3 The hydrogenation demetallization catalyst Cat3 was prepared with a concentration of 6.3g / 100mL and a NiO concentration of 2.9g / 100mL. The content of molybdenum oxide in the catalyst was 7.5wt% and the content of nickel oxide was 3.6wt%.

[0064] The properties of catalyst Cat3 are shown in Table 1. In the modified alumina carrier S-3, the length of the rod-shaped modified alumina in the micron-sc...

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Abstract

The invention discloses a residual oil hydrogenation demetallization catalyst and a preparation method thereof. The catalyst includes a modified alumina-based carrier and a second active metal component, the modified alumina-based carrier is a modified alumina-based carrier containing the first active metal component, and the modified alumina-based carrier includes Main body modified alumina and rod-shaped modified alumina, the main modified alumina is modified alumina with micron-scale pores, wherein at least part of the rod-shaped modified alumina is distributed on the outer surface of the main modified alumina and In the micron-scale channel with a pore diameter D of 3-10 μm, the rod-shaped modified alumina has a length of 1-12 μm and a diameter of 100-300 nm. When the hydrodemetallization catalyst is used for the hydrodemetallization of heavy oil, 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): B01J27/19B01J23/883B01J37/08B01J35/10B01J32/00B01J21/04C10G45/08
CPCB01J27/19B01J23/883B01J37/082B01J21/04B01J35/1019B01J35/1042B01J35/109C10G45/08C10G2300/1037C10G2300/202Y02P20/52
Inventor 韩博季洪海凌凤香张会成王少军
Owner CHINA PETROLEUM & CHEM CORP
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