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A kind of preparation method of hydrogenation catalyst

A technology of hydrogenation catalyst and addition amount, applied in catalyst activation/preparation, chemical instrument and method, physical/chemical process catalyst, etc., can solve the problems of unfavorable active metal dispersion, loss of carrier pore structure, high viscosity of impregnating liquid, etc. Achieve the effect of reducing competitive adsorption, reducing viscosity and acidity, and facilitating uniform dispersion

Active Publication Date: 2019-12-13
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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  • A kind of preparation method of hydrogenation catalyst
  • A kind of preparation method of hydrogenation catalyst
  • A kind of preparation method of hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Place 100g of macroporous alumina powder (85 on dry basis) in a rolling pan, and spray 80ml containing 18.5g of cobalt nitrate and 1.1g of citric acid into the macroporous alumina powder in the rolling pan under rotating conditions. After spraying, the solution will continue to rotate for 30 minutes, then stand for 3 hours, dry at 110°C for 3 hours, put it in an atmosphere furnace for 2h, the protective gas is nitrogen, and the roasting temperature is 300°C.

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

[0027] Place the obtained alumina carrier in a rolling pan, and spray 60ml of an aqueous solution containing 25.4g of ammonium heptamolybdate and 3.2g of glycerol into the rolling pan under rotating conditions. After spraying the solution...

Embodiment 2

[0029] Place 100g of macroporous alumina powder (85 on dry basis) in a rolling pan, and spray 80ml of macroporous alumina powder in the rolling pan with 18.5g of cobalt nitrate and 3.0g of oxalic acid in an atomized manner under rotating conditions. After spraying the aqueous solution and the solution, continue to rotate for 30 minutes in a rolling pan, then leave it for 3 hours, dry at 110°C for 3 hours, and put it in an atmosphere furnace for 2 hours. The protective gas is nitrogen and the roasting temperature is 350°C.

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

[0031] Place the obtained alumina carrier in a rolling pan, and spray 60ml of an aqueous solution containing 25.4g of ammonium heptamolybdate and 4.5g of ethylene glycol into the rollin...

Embodiment 3

[0033] Place 100g of macroporous alumina powder (85 on dry basis) in a rolling pan, and spray 80ml of 18.5g nickel nitrate and 3.5g tartaric acid into the macroporous alumina powder in the rolling pan under rotating conditions. After spraying the aqueous solution and the solution, continue to rotate for 30 minutes in the rolling pan, then leave it for 3 hours, dry at 110°C for 3 hours, then put it in an atmosphere furnace for 2 hours, the protective gas is nitrogen, and the roasting temperature is 400°C.

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

[0035] Place the obtained alumina carrier in a rolling pan, and spray 60ml of aqueous solution containing 25.4g ammonium heptamolybdate and 3g triethylene glycol into the rolling pan under rotating condi...

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Abstract

The invention provides a preparation method of a hydrogenation catalyst. This method introduces some active metal components and organic acid complexing agents during the carrier forming process, shapes the carrier through a certain roasting process, and then performs subsequent active metal impregnation steps to obtain a hydrogenation catalyst. The hydrogenation catalyst prepared by the method of the present invention has active metals uniformly dispersed and the preparation method is simple and easy to implement, and is especially suitable for ultra-deep hydrodesulfurization reactions of diesel fuel.

Description

Technical field [0001] The invention relates to a preparation method of a hydrogenation catalyst, in particular to a preparation method of a diesel ultra-deep hydrodesulfurization catalyst. Background technique [0002] As the world’s crude oil production is becoming increasingly heavier, and today’s demand for clean oil products continues to increase, the hydrodesulfurization process technology of petroleum fractions plays an increasingly important role in the production of clean oil products. The requirements for high activity of hydrogen catalysts are also increasing. [0003] For ultra-deep hydrodesulfurization catalysts, Co-Mo-S and Ni-Mo-S type II active center theories have been widely accepted by major research and development institutions, and new high-activity hydroprocessing catalysts have been developed based on this. The main improvements include the choice of carrier, the application of additives, the complexation of the impregnating solution, the vulcanization proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J23/883B01J23/888C10G45/08
CPCC10G45/08B01J23/882B01J23/883B01J23/8885B01J37/0213B01J35/633B01J35/615
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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