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A kind of preparation method of heavy oil hydrogenation demetallization catalyst

A heavy oil hydrogenation and catalyst technology, which is 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, and achieve the benefit of transmission Mass and diffusion, high metal capacity, and the effect of extending the operating cycle

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 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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  • A kind of preparation method of heavy oil hydrogenation demetallization catalyst
  • A kind of preparation method of heavy oil hydrogenation demetallization catalyst
  • A kind of preparation method of heavy oil hydrogenation demetallization catalyst

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Experimental program
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Effect test

preparation example Construction

[0037] Preparation of pretreatment material A:

[0038] Get the waste catalyst pulverized to more than 230 mesh, roast at 750 DEG C for 8 hours, weigh 100 grams of the above-mentioned waste catalyst, place 700 grams in an aqueous ammonium bicarbonate solution with a mass percentage concentration of 20%, and transfer the mixture into the autoclave After sealing, heat treatment was performed at 145°C for 6 hours, and then the powder was dried at 110°C for 6 hours. The above alumina was immersed and soaked for 1.5 hours with a solution of polyethylene glycol-6000 with a concentration of 30% by mass (ie, the average molecular weight was 6000), and then the carrier was dried at 120 ° C for 6 hours to obtain the pretreatment material A-I.

[0039] Take the waste catalyst pulverized to more than 230 meshes, roast at 800 ° C for 8 hours, weigh 100 grams of the above-mentioned waste catalyst, place 600 grams in an aqueous ammonium bicarbonate solution with a mass percentage concentrati...

Embodiment 1

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

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

Embodiment 2

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

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Abstract

The invention discloses a preparation method of a heavy oil hydrogenation demetallization catalyst, comprising: (1) pulverizing the spent hydrogenation catalyst, and then roasting; (2) immersing the material obtained in step (1) into an aqueous solution of ammonium bicarbonate Sealing heat treatment, drying, soaking in polyethylene glycol solution, and drying to obtain pretreatment material A; (3) activating kaolin at high temperature, then immersing in ammonium bicarbonate aqueous solution for sealing heat treatment, and drying the material after heat treatment to obtain Pretreatment material B; (4) Pseudo-boehmite, pretreatment material A, and pretreatment material B are kneaded and formed, and the molded product is dried and roasted to obtain a carrier, and the hydrogenation active component is loaded on the carrier to obtain a catalyst . The method utilizes waste catalyst and kaolin to prepare a hydrodemetallization catalyst, reduces production cost and reduces environmental pollution at the same time. The hydrodemetallization catalyst has a suitable macropore content and 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 hydrodemetallation 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 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 and outer surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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