Preparation method of hydrogenation catalyst

A technology of hydrogenation catalyst and dosage, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of unfavorable active metal dispersion, loss of carrier pore structure, high viscosity of impregnation solution, etc. Achieve the effect of reducing competitive adsorption, reducing viscosity and acidity, and facilitating uniform dispersion

Active Publication Date: 2018-03-09
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

[0025] 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 pan 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.

[0026] Take out the modified macroporous alumina powder and 20g of small pore alumina powder (dry basis 75) and mix evenly, then add 2g of scallop powder, 25g of 10% phosphoric acid and 90ml of deionized water, knead, shape, and dry at 110°C for 4 hours , Calcined at 550°C for 3h to obtain an alumina carrier.

[0027] The alumina carrier that obtains is placed in the rolling pan, and under the condition of turning, spray 60ml into the rolling pan and contain 25.4g ammonium heptam...

Embodiment 2

[0029] 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.

[0030] Take out the modified macroporous alumina powder and 20g of small pore alumina powder (dry basis 75) and mix evenly, then add 2g of scallop powder, 20g of 10% nitric acid and 90ml of deionized water, knead, shape, and dry at 110°C for 4 hours , Calcined at 550°C for 3h to obtain an alumina carrier.

[0031]The alumina carrier that obtains is placed in the rolling pan, and under the condition of turning, spray 60ml into the rolling pan and contain 25.4g ...

Embodiment 3

[0033] 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 an atmosphere furnace and roast it for 2 hours, the protective gas is nitrogen, and the roasting temperature is 400°C.

[0034] Take out the modified macroporous alumina powder and 20g of small pore alumina powder (dry basis 75) and mix evenly, then add 2g of scallop powder, 20g of 10% nitric acid and 90ml of deionized water, knead, shape, and dry at 110°C for 4 hours , Calcined at 550°C for 3h to obtain an alumina carrier.

[0035] The alumina carrier that obtains is placed in the rolling pan, under the condition of turning, sprays 60ml into the rolling pan again and contains 25.4g a...

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Abstract

The invention provides a preparation method of a hydrogenation catalyst. According to the method, a part of active metal components and an organic complexing agent are introduced in a carrier moldingprocess, a carrier is molded through a certain calcining treatment procedure, and then a subsequent active metal soaking step is performed to obtain the hydrogenation catalyst. According to the hydrogenation catalyst prepared with the method provided by the invention, active metals are dispersed uniformly; the preparation method is simple and feasible, and is particularly suitable for an 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 a diesel ultra-deep hydrodesulfurization catalyst. 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 solution, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882B01J23/883B01J23/888C10G45/08
CPCB01J23/882B01J23/883B01J23/8885B01J35/1019B01J35/1038B01J37/0213C10G45/08
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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