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Preparation method of hydrogenation catalyst

A technology of hydrogenation catalyst and alumina, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. It can solve problems such as unfavorable active metal dispersion, loss of carrier pore structure, and high viscosity of impregnating liquid. Achieve the effect of reducing competitive adsorption, reducing viscosity and acidity, and facilitating uniform dispersion

Active Publication Date: 2019-09-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the above method for preparing the catalyst, the active metal component is added after the carrier is molded in the form of impregnating solution containing organic additives. Due to the high content of active metal required by the ultra-deep hydrodesulfurization catalyst, the impregnating solution needs The content of added additives is also high, and the viscosity of the impregnating liquid is relatively high, which is not conducive to the dispersion of active metals, so the preparation is difficult or even impossible to industrialize.
At the same time, the addition of a large amount of organic acid will lead to the loss of the support pore structure and the decrease of the lateral pressure strength of the catalyst.

Method used

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  • Preparation method of hydrogenation catalyst
  • Preparation method of hydrogenation catalyst
  • Preparation method of hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Put 100g of macroporous alumina powder (dry basis 85) in a rolling pan, and spray 80ml of 18.5g of cobalt nitrate and 1.1g of citric acid into the macroporous alumina powder in the rolling pan under the condition of rotation. After the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 3 hours, dry it at 110°C for 3 hours, put it into an atmosphere furnace and roast it for 2 hours, the protective gas is nitrogen, and the roasting temperature is 300°C. Modified macroporous alumina powder.

[0037] Put 1 L of aluminum sulfate solution (concentration of 0.2 mol / L) in a raw material tank, and the raw material tank is placed at room temperature at 20°C; 1 L of sodium metaaluminate solution (concentration of 0.3 mol / L) in another raw material tank In the tank, the raw material tank is heated by hot water circulation to control the temperature at 80°C. Add 300 g of sodium dodecylbenzenesulfonate into the sodium metaaluminate solution ...

Embodiment 2

[0041] Put 100g of macroporous alumina powder (dry basis 85) in the rolling pan, and spray 80ml of 18.5g of cobalt nitrate and 3.0g of oxalic acid into the macroporous alumina powder in the rolling pan under the condition of rotation. Aqueous solution, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 3 hours, dry it at 110°C for 3 hours, put it into an atmosphere furnace and roast it for 2 hours, the protective gas is nitrogen, and the roasting temperature is 350°C, and the improved Permanent macroporous alumina powder.

[0042] Put 1 L of aluminum sulfate solution (concentration: 0.2 mol / L) in a raw material tank, and the raw material tank is kept at room temperature, with a temperature of 20°C. 1 L of sodium metaaluminate solution (concentration: 0.3 mol / L) was placed in another raw material tank, and the temperature of the raw material tank was controlled at 85 °C by hot water circulation heating. The anionic surfactant...

Embodiment 3

[0046] Put 100g of macroporous alumina powder (dry basis 85) in a rolling pan, and spray 80ml of 18.5g of nickel nitrate and 3.5g of tartaric acid into the macroporous alumina powder in the rolling pan under rotating conditions. Aqueous solution, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 3 hours, dry it at 110°C for 3 hours, put it into the atmosphere furnace and roast it for 2 hours, the protective gas is nitrogen, and the roasting temperature is 400°C. Permanent macroporous alumina powder.

[0047] Put 1 L of aluminum sulfate solution (concentration: 0.2 mol / L) in a raw material tank, and the raw material tank is kept at room temperature, with a temperature of 20°C. 1 L of sodium metaaluminate solution (concentration: 0.3 mol / L) was placed in another raw material tank, and the temperature of the raw material tank was controlled at 85 °C by hot water circulation heating. Replace the anionic surfactant with 90 g of ...

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Abstract

The invention provides a preparation method of a hydrogenation catalyst. According to the method, part of an active metal component and an organic acid complexing agent are introduced in a supporter forming process, a supporter is formed by a certain baking process, and then a subsequent active metal impregnation step is performed to obtain the hydrogenation catalyst. The hydrogenation catalyst provided by the invention has active metal uniformly dispersed, is simple and easy to prepare and is especially suitable for ultra-deep hydrodesulfurization reaction of diesel oil.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation catalyst, in particular to a preparation method suitable for an ultra-deep hydrodesulfurization catalyst for diesel oil. Background technique [0002] As the world's crude oil production is becoming more and more heavy, and the demand for clean oil products is increasing today, in the process of producing clean oil products, the hydrodesulfurization process technology of petroleum fractions plays an increasingly important role. The high activity requirements of hydrogen catalysts are also increasing. [0003] For ultra-deep hydrodesulfurization catalysts, the type II active center theory of Co-Mo-S and Ni-Mo-S has been widely accepted by major research and development institutions, and new high-activity hydrotreating catalysts have been developed based on this. The main improvement schemes include the choice of carrier, the application of additives, the complexation of impregnation solut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/85B01J23/882B01J23/883B01J23/888B01J37/02C10G45/08
Inventor 孙进郭蓉周勇杨成敏段为宇姚运海丁莉刘丽
Owner CHINA PETROLEUM & CHEM CORP
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