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Hydrogenation catalyst and preparation method thereof

A technology of hydrogenation catalyst and alumina, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., and can solve the problems of metal and other impurities such as clogging

Active Publication Date: 2020-07-07
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 can take into account the hydrodeacidification activity and hydrodemetallization activity and the ability to accommodate impurities such as metals, some small-pore alumina will be distributed on the outer surface of the carrier during the preparation of the carrier, which is easily blocked by impurities such as metals.

Method used

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  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Prepare mixed solution

[0055] Dissolve 171.7g of ferric nitrate and 37.0g of ammonium dihydrogen citrate in water to prepare 2200mL mixed solution A, in which the concentration of ferric nitrate is 0.08g / mL and the concentration of ammonium dihydrogen citrate is 0.018g / mL.

[0056] (2) Carrier preparation

[0057] 1000g of small-pore alumina is made into spherical particles by rolling in a ball rolling machine. During the ball forming process, 1200mL of mixed solution A is sprayed at the same time. The speed of the ball rolling machine is 35 rpm. After the ball forming is completed, the obtained 0.4~0.5mm spherical alumina A; then weigh 100g of alumina A and put it into the rolling ball machine, sprinkle 700g of macroporous alumina evenly during the rolling process, and spray 840mL of mixed solution A at the same time, the rolling ball machine speed is 35 RPM, after ball forming, 0.8~1.0mm spherical alumina B is produced. Carry out water vapor treatment on alumi...

Embodiment 2

[0064] (1) Prepare mixed solution

[0065] Dissolve 227.3g of ferric nitrate and 53.0g of diammonium hydrogen citrate in water to prepare 1800mL mixed solution A, in which the concentration of ferric nitrate is 0.126g / mL and the concentration of diammonium hydrogen citrate is 0.027g / mL.

[0066] (2) Carrier preparation

[0067] 1000g of small-pore alumina is made into spherical particles by rolling in a ball rolling machine. During the ball forming process, 1200mL of mixed solution A is sprayed at the same time. The speed of the ball rolling machine is 35 rpm. After the ball forming is completed, the obtained 0.6~0.7mm spherical alumina A; then weigh 100g of alumina A and put it into the ball rolling machine, sprinkle 363g of macroporous alumina evenly during the rolling process, and spray 435mL of mixed solution A at the same time, the speed of the rolling ball machine is 35 RPM, after ball forming, 1.0~1.2mm spherical alumina B is produced. Carry out water vapor treatment ...

Embodiment 3

[0074] (1) Prepare mixed solution

[0075] Dissolve 235.7g of ferric nitrate and 59.0g of ammonium citrate in water to prepare 1800mL of mixed solution A, in which the concentration of ferric nitrate is 0.168g / mL and the concentration of ammonium citrate is 0.042g / mL.

[0076] (2) Carrier preparation

[0077] 1000g of small-pore alumina is made into spherical particles by rolling in a ball rolling machine. During the ball forming process, 1200mL of mixed solution A is sprayed at the same time. The speed of the ball rolling machine is 35 rpm. After the ball forming is completed, the obtained 0.8~1.0mm spherical alumina A; then weigh 100g of alumina A and put it into the ball rolling machine, sprinkle 114g of macroporous alumina evenly during the rolling process, and spray 95mL of mixed solution A at the same time, the speed of the ball rolling machine is 35 RPM, after ball forming, 1.0~1.2mm spherical alumina B is produced. Carry out water vapor treatment on alumina B, the te...

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Abstract

The invention discloses a hydrogenation catalyst and a preparation method thereof. The preparation method comprises the steps of dissolving iron-containing inorganic salt and ammonium citrate salt inwater, and obtaining a solution A; carrying out ball forming on the small-pore aluminum oxide, adding the solution A to obtain aluminum oxide A, putting the aluminum oxide A into a ball rolling machine, and uniformly adding the large-pore aluminum oxide and the solution A in the rolling process to obtain aluminum oxide B; treating and drying the aluminum oxide B to obtain aluminum oxide C; and loading an active metal component to obtain the catalyst. The catalyst obtained by the method provided by the invention has non-uniform pore distribution, not only has relatively high hydrodemetallization activity and capacity of accommodating impurities such as metal, but also has relatively high desulfurization activity, is not easily blocked by the impurities such as metal, and can ensure the stability of the catalyst in a long-period operation process of a device.

Description

technical field [0001] The invention belongs to the technical field of oil refining and chemical industry, and relates to a catalytic material and a preparation method thereof, in particular to a hydrogenation catalyst and a preparation method thereof. Background technique [0002] In recent years, the quality of crude oil has deteriorated day by day, but the demand for light oil products has increased year by year. Therefore, it is of great practical significance to develop deep processing of heavy oil and increase the added value of products. As the main processing method, hydrogenation technology is facing great challenges, and it is urgent to develop better hydrogenation processes and hydrogenation catalysts with higher activity. The reactivity of heavy oil hydrogenation catalysts depends not only on the intrinsic catalytic properties of the active components, but also on the properties of the catalyst support. The specific surface area, pore structure, and surface acid...

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J23/882B01J35/10C10G45/08
CPCB01J23/883B01J23/882B01J23/002C10G45/08B01J2523/00C10G2300/202C10G2300/205B01J35/615B01J35/635B01J2523/31B01J2523/68B01J2523/842B01J2523/847B01J2523/845Y02P20/52
Inventor 金浩杨光朱慧红刘璐孙素华杨涛
Owner CHINA PETROLEUM & CHEM CORP
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