Hydrodemetallization catalyst and preparation method thereof

A hydrodemetallization and catalyst technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problem of short time and stability of reaction molecules staying in the channel It needs to be further improved, such as large pore size, to achieve the effect of promoting penetration and uniformity, overcoming the incompatibility between large pore size, specific surface area and mechanical strength, and improving activity.

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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  • Hydrodemetallization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Weigh 100 grams of activated carbon particles with a particle size of 5 µm, and impregnate them with active component impregnation solution I with a molybdenum oxide concentration of 2.8 g / 100ml and a nickel oxide concentration of 0.31g / 100ml. The modified physical pore expander was obtained by drying for 4 hours.

[0059] (2) Weigh 200 grams of pseudo-boehmite (produced by Shandong Aluminum Industry Co., Ltd.), 24 grams of modified physical pore-enlarging agent in step (1), 0.4 grams of scallop powder, mix the above physicals evenly, and add an appropriate amount of mass concentration Knead with 1.5% acetic acid aqueous solution, extrude, and dry the molded product at 100°C for 6 hours, and then bake the dried product at 600°C for 5 hours in an air atmosphere to obtain the modified alumina carrier SI.

[0060](3) Weigh 100 grams of modified alumina carrier SI from step (2), place it in 780 grams of ammonium bicarbonate solution with a mass concentration of 22.4%, t...

Embodiment 2

[0064] Same as Example 1, except that step (1) the activated carbon particle size is 7 microns, the concentration of molybdenum oxide in the active component impregnation solution I is 2.3g / 100ml, and the concentration of nickel oxide is 0.39g / 100ml; step (2) modified physical expansion The amount of pore agent added is 30.8 grams; the concentration of the ammonium bicarbonate solution in step (3) is 18.7%, the added amount of the solution is 1140 grams, the sealing pretreatment temperature is 90°C, the treatment time is 2 hours, and the heat treatment temperature is 135°C. The time is 7.5 hours, and the modified alumina carrier SII-2 is prepared. Step (4) MoO in the active component impregnation solution II 3 The concentration is 8.1g / 100ml, and the concentration of NiO is 2.4g / 100ml to prepare the hydrodemetallization catalyst Cat2. The content of molybdenum oxide in the catalyst is 8.45wt%, and the content of nickel oxide is 2.52wt%. The ratio of the content of the active ...

Embodiment 3

[0067] Same as Example 1, except that step (1) the activated carbon particle size is 9 microns, the molybdenum oxide concentration in the active component impregnation solution I is 3.2g / 100ml, and the nickel oxide concentration is 0.26g / 100ml; step (2) modified physical expansion The amount of the pore agent added is 19 grams; the concentration of the ammonium bicarbonate solution in step (3) is 24.6%, the added amount of the solution is 630 grams, the heat treatment temperature is 155 ° C, and the treatment time is 4.5 hours, and the modified alumina carrier SII- 3. Step (4) MoO in the active component impregnation solution II 3 Concentration is 6.9g / 100ml, NiO concentration is 3.3g / 100ml to prepare hydrodemetallization catalyst Cat3, molybdenum oxide content in the catalyst is 7.41wt%, nickel oxide content is 3.35wt%, wherein the rod-shaped part in the micron channel The ratio of the content of the active metal to the content of the active metal in the bulk phase of the ca...

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Abstract

The invention discloses a hydrodemetallization catalyst and a preparation method thereof. The hydrodemetallization catalyst comprises a modified alumina carrier SII and a second active metal component, the modified alumina carrier SII is a modified alumina carrier containing a first active metal component; the modified alumina carrier SII comprises main body parts and rod-like parts; wherein the main body parts are provided with micron-sized pore channels, at least a part of the rod-shaped parts are distributed on the outer surface of the main body parts and in the micron-sized pore channels with the pore diameter D of 3-10 microns, and the content of active metal on the rod-shaped parts in the micron-sized pore channels is higher than that of the active metal in a hydrodemetallization catalyst bulk phase. When the hydrodemetallization catalyst is used as a heavy oil hydrodemetallization catalyst, the hydrodemetallization catalyst has high activity and activity stability.

Description

technical field [0001] The invention relates to a hydrodemetallization catalyst and a preparation method thereof, in particular to a hydrodemetallization catalyst for heavy oil 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J35/10C10G45/08
CPCB01J23/883B01J23/002B01J35/1019B01J35/1042B01J35/1047B01J37/0018C10G45/08C10G2300/202C10G2300/1037B01J2523/00B01J2523/31B01J2523/68B01J2523/847
Inventor 韩博季洪海凌凤香张会成王少军
Owner CHINA PETROLEUM & CHEM CORP
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