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Hydrofining catalyst as well as preparation method and application thereof

A hydrofining and catalyst technology, applied in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as high hydrodesulfurization activity, and does not involve research on the oxidation and desulfurization performance of multi-stage porous TS-1 molecular sieves , to enhance the oxidation activity, promote the formation of hydroxyl groups, and inhibit the polymerization reaction

Pending Publication Date: 2020-08-25
深圳市汇德丰控股集团有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

CN108452843A discloses a TS-1 molecular sieve, γ / Al 2 o 3 , Heteropolyacid diesel hydrotreating catalyst, which has the characteristics of specific pore size, large pore volume, high hydrodesulfurization activity, etc. It is used as a diesel hydrotreating catalyst, but does not involve hierarchical pores with meso-micropore characteristics Study on Oxidative Desulfurization Performance of TS-1 Molecular Sieve

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  • Hydrofining catalyst as well as preparation method and application thereof
  • Hydrofining catalyst as well as preparation method and application thereof

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preparation example Construction

[0027] On the one hand, the invention provides a kind of preparation method of hydrorefining catalyst, and this preparation method comprises the following steps:

[0028] 1) Put the TS-1 zeolite raw powder in an alkaline solution for constant temperature treatment, and then cool, filter, wash, dry and roast to obtain a solid product A;

[0029] 2) ion-exchanging the solid product A with an ammonium nitrate solution to obtain a hierarchically porous TS-1 zeolite molecular sieve;

[0030] 3) Mixing the hierarchically porous TS-1 zeolite molecular sieve with alumina to form a catalyst carrier; wherein, based on the total mass of the catalyst carrier, the mass fraction of the hierarchically porous TS-1 zeolite molecular sieve is 10 %-40%;

[0031] 4) impregnate the hierarchically porous TS-1 zeolite molecular sieve with the solution containing the molybdenum source and the cobalt source by an equal volume impregnation method, after the impregnation is completed, dry and roast to ...

Embodiment 1

[0048] Take 10 g of TS-1 zeolite raw powder and place it in 200 mL of 0.2 mol / L sodium hydroxide aqueous solution, and stir in a constant temperature water bath at 65°C for 4 hours. After the constant temperature treatment was completed, it was rapidly cooled to room temperature, the solid was filtered, washed with deionized water, and dried at 90°C for 3h, and then the dried solid was calcined at 600°C for 12h to obtain a solid product A. The solid product A is ion-exchanged three times with ammonium nitrate solution to obtain a multi-order porous TS-1 zeolite molecular sieve.

[0049] The multi-stage porous TS-1 zeolite molecular sieve is ground with alumina powder to obtain a catalyst carrier, wherein, based on the total mass of the catalyst carrier, the mass ratio of the multi-stage porous TS-1 zeolite molecular sieve is 10%.

[0050] A solution was prepared with ammonium metamolybdate as the molybdenum source and cobalt nitrate hexahydrate as the cobalt source, and the ca...

Embodiment 2

[0054] Take 10 g of TS-1 zeolite raw powder and place it in 200 mL of 0.1 mol / L sodium hydroxide aqueous solution, and stir in a constant temperature water bath at 70°C for 2 h. After the constant temperature treatment was completed, it was rapidly cooled to room temperature, the solid was filtered, washed with deionized water, and dried at 100°C for 2h, and then the dried solid was calcined at 500°C for 12h to obtain a solid product A. The solid product A is ion-exchanged three times with ammonium nitrate solution to obtain a multi-order porous TS-1 zeolite molecular sieve.

[0055] The multi-stage porous TS-1 zeolite molecular sieve is ground with alumina powder to obtain a catalyst carrier, wherein, based on the total mass of the catalyst carrier, the mass ratio of the multi-stage porous TS-1 zeolite molecular sieve is 25%.

[0056] Using ammonium metamolybdate as the molybdenum source and cobalt nitrate hexahydrate as the cobalt source, a solution was prepared, and the cat...

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Abstract

The invention discloses a preparation method of a hydrofining catalyst. The preparation method comprises the following steps: preparing a hierarchical pore TS-1 zeolite molecular sieve; making preparation of a CoMo / TS-1 / Al2O3 composite material; and processing the CoMo / TS-1 / Al2O3 composite material with an alkaline solution. The invention also discloses the catalyst prepared by the preparation method and application of the catalyst in hydrofining of diesel oil. The catalyst disclosed by the invention is high in hydrodesulfurization activity, stable in activity and strong in raw material adaptability, and can completely meet the production requirements of clean diesel oil in national V and VI standards. The hydrogenation performance of the catalyst is the best, the desulfurization rate reaches over 99%, the denitrification rate reaches over 97%, the diesel oil yield is over 96%, the oil product density is reduced to below 0.8 g / mL the polycyclic aromatic hydrocarbon content is smaller than 11%, and the hydrodesulfurization, denitrification and polycyclic aromatic hydrocarbon saturation performance is stable.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a hydrofinishing catalyst suitable for a diesel hydrofinishing process, a preparation method and application thereof. Background technique [0002] With the development of today's society and economy, people pay more and more attention to environmental protection, so the quality requirements for oil products are also getting higher and higher. This puts forward stricter restrictions on the content of sulfur and aromatics in diesel. The urgent task of the current world oil processing industry is to produce clean diesel with low sulfur, low aromatics and low nitrogen. Therefore, research on catalysts and technologies suitable for deep desulfurization of diesel oil is an urgent problem for my country's oil refining industry. The development of new and efficient deep hydrodesulfurization catalysts has become an economical and effective means to solve this problem. The ...

Claims

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Application Information

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IPC IPC(8): B01J29/89B01J35/10B01J37/02B01J37/30C10G45/08
CPCB01J29/89B01J37/0201B01J37/30C10G45/08B01J2229/38B01J2229/20C10G2300/202C10G2400/04B01J35/394B01J35/60
Inventor 肖洁
Owner 深圳市汇德丰控股集团有限公司
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