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Preparation method of heavy oil hydrodemetallization catalyst

A heavy oil hydrogenation 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 that the pore volume of the catalyst needs to be further improved

Active Publication Date: 2020-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method utilizes spent catalysts to prepare new hydrotreating catalysts, the pore volume of the catalysts needs to be further improved.

Method used

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  • Preparation method of heavy oil hydrodemetallization catalyst
  • Preparation method of heavy oil hydrodemetallization catalyst
  • Preparation method of heavy oil hydrodemetallization catalyst

Examples

Experimental program
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preparation example Construction

[0037] Preparation of pretreatment material A:

[0038] Take the spent catalyst crushed to more than 230 mesh, roast it at 750°C for 8 hours, weigh 100 grams of the above spent catalyst, place it in 700 grams of ammonium bicarbonate aqueous solution with a concentration of 20% by mass, and transfer the mixed material into an autoclave Heat treatment at 145°C for 6 hours after sealing, and then dry the powder at 110°C for 6 hours. The aluminum oxide was submerged in a solution of polyethylene glycol-6000 (average molecular weight 6000) with a concentration of 30% by mass for 1.5 hours, and then the carrier was dried at 120°C for 6 hours to obtain the pretreated material A-I.

[0039] Take the spent catalyst crushed to more than 230 mesh, roast it at 800°C for 8 hours, weigh 100 grams of the above spent catalyst, place it in 600 grams of ammonium bicarbonate aqueous solution with a concentration of 22.5% by mass, and transfer the mixed material into an autoclave Heat treatment ...

Embodiment 1

[0044] Weigh 100 grams of pseudo-boehmite, 20 grams of the above-mentioned pretreatment material A-I, 16 grams of the pretreatment material B-I, 2 grams of scallop powder, mix the above-mentioned materials evenly, add an appropriate amount of aqueous solution containing 3 grams of acetic acid and knead, squeeze The strips are formed, and the formed product is dried at 140°C for 6 hours, and the dried product is calcined at 700°C for 5 hours in air to prepare an alumina carrier.

[0045] Weigh 50 grams each of the above-mentioned alumina supports, add 100 mL of Mo-Ni-P solution (to make the final catalyst contain MoO 3 10.3wt%, containing NiO 3.1wt%) impregnated for 2 hours, filtered off the excess solution, dried at 120°C, and then roasted at 450°C for 5 hours to obtain the demetallization catalyst Cat-1 of the present invention, the catalyst properties are shown in Table 1 .

Embodiment 2

[0047] Same as Example 1, except that the amount of pretreatment material A-I was 25 grams, and the amount of pretreatment material B-I was 14 grams, and the demetallization catalyst Cat-2 of the present invention was obtained. The properties of the catalyst are shown in Table 1.

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Abstract

The invention discloses a preparation method of a heavy oil hydrodemetallization catalyst, and the method comprises the following steps: (1) pulverizing a waste hydrotreating catalyst, and roasting; (2) soaking the material obtained in the step (1) into an ammonium bicarbonate aqueous solution, carrying out sealed heat treatment, drying, soaking with a polyethylene glycol solution, and drying to obtain a pretreated material A; (3) performing high-temperature activation treatment on kaolin, then soaking into an ammonium bicarbonate aqueous solution, performing sealed heat treatment, and dryingthe material subjected to heat treatment to obtain a pretreated material B; and (4) kneading and molding pseudo-boehmite, the pretreated material A and the pretreated material B, drying and roasting the molded product to obtain a carrier, and loading a hydrogenation active component onto the carrier to obtain the catalyst. According to the method, the hydrodemetallization catalyst is prepared fromthe waste catalyst and kaolin, environmental pollution is reduced while the production cost is reduced, the content of macropores of the hydrodemetallization catalyst is appropriate, and the hydrodemetallization catalyst has high hydrodemetallization activity and hydrodesulfurization activity.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a preparation method of a heavy oil hydrodemetallization catalyst. 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. During the processing of heavy oil, 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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IPC IPC(8): B01J23/883B01J23/94B01J35/10B01J37/02C10G45/08
CPCB01J23/883B01J23/94B01J37/0201C10G45/08C10G2300/701C10G2300/205C10G2300/202C10G2300/206C10G2300/1077B01J35/394B01J35/615B01J35/635
Inventor 季洪海凌凤香王少军张会成沈智奇
Owner CHINA PETROLEUM & CHEM CORP
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