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Hydrotreatment catalyst and its preparation method

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc., can solve the problem that it is difficult to achieve deep desulfurization and denitrification, the activity of the catalyst system is not sufficient, and it is difficult to meet the product quality Requirements and other issues to achieve the effect of high HDS and HDN activity

Active Publication Date: 2006-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This catalyst has the same disadvantages as USP 6281333, and it is difficult to meet the requirements of deep desulfurization and denitrogenation
[0012] Although the catalysts mentioned above have different degrees of improvement in activity compared with the previous catalysts, mainly reflected in the improvement of the desulfurization activity of alkyl sulfur-containing compounds and dibenzothiophene to a certain extent, but for the complex structure Sulfur-containing compounds, such as 4,6-dimethyldibenzothiophene, etc., the activity of these catalyst systems is still insufficient, so that it is difficult to meet the current increasingly high product quality requirements

Method used

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  • Hydrotreatment catalyst and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Modified alumina prepared according to the method provided by the invention.

[0059] Add 10L of 40g Al to a 100L plastic tank 2 o 3 / L of sodium metaaluminate solution and 2L concentration of 15g SiO 2 / L sodium silicate solution, mix well, raise the temperature to 75°C, then gradually add Al with a concentration of 20g 2 o 3 / L, the temperature is the aluminum sulfate solution of 75 ℃, stop adding aluminum sulfate solution when the pH value of slurry is 8.0, continue to stir at constant temperature for 5 minutes, then add the dilute nitric acid solution that concentration is 5wt%, adjust the pH value of slurry to be 2.5 , stirred at constant temperature for 5 minutes, then added the sodium metaaluminate solution of the above properties, adjusted the pH value of the slurry to 9.0, continued to stir at constant temperature for 5 minutes, repeated swinging the pH value twice, and then added 2L of 8g TiO 2 / L of titanium sulfate solution, and control the addition rate...

Embodiment 2

[0061] Modified alumina prepared according to the method provided by the invention.

[0062] Compared with Example 1, the difference is that the amount of sodium silicate solution added and the amount of titanium sulfate solution are different, and all the other are the same as Example 1 to obtain modified alumina, which has the following characteristics: (1) the silicon dioxide content is 0.2wt%, (2) titanium dioxide content is 20wt%, (3) specific surface area is 310m 2 / g, (4) The pore volume is 0.80ml / g, (5) The pore volume with a pore diameter of 8nm to 15nm accounts for 75% of the total pore volume, (6) The amount of infrared acid ≥ 350°C is 0.04mmol / g, of which B acids accounted for 42% of the total acids.

Embodiment 3

[0064] Modified alumina prepared according to the method provided by the invention.

[0065] Compared with Example 1, the difference is that the amount of sodium silicate solution added and the amount of titanium sulfate solution are different, and all the other are the same as Example 1 to obtain modified alumina, which has the following characteristics: (1) the silicon dioxide content is 19.6wt%, (2) titanium dioxide content is 0.4wt%, (3) specific surface area is 366m 2 / g, (4) The pore volume is 1.04ml / g, (5) The pore volume with a pore diameter of 8nm to 15nm accounts for 85% of the total pore volume, (6) The amount of infrared acid ≥ 350°C is 0.10mmol / g, of which B acids accounted for 54% of the total acids.

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Abstract

The invention discloses the hydrotreatment catalyst and preparing method. The catalyst contains the 1wt%-20wt% organic auxiliary agent, using the aluminum oxide modified by titanium and silicon as carrier, and using the metals in the VIB and VIII as active metal componemt. The method comprises the following steps: using the modified aluminum oxide as carrier, after soaking the catalyst carrier in the active metal and organic auxiliary agent, drying at the 200íµ, and getting the catalyst. The said catalyst can be used for hydrotreating process of fraction of petroleum, especially for hydrodesulphurization and hydrodenitrification process of middle distillate oil.

Description

technical field [0001] The invention relates to a hydrotreating catalyst, which is especially suitable for hydrodesulfurization and hydrodenitrogenation processes of distillate oil. The present invention also relates to a preparation method of the catalyst. Background technique [0002] As the society attaches great importance to the environment and human health, environmental protection regulations have increasingly strict requirements on the sulfur content of petroleum products, especially diesel fractions. At present, the sulfur content of diesel fractions is 0.05wt% ~ 0.1wt%, which is acceptable Yes, but soon the sulfur content will be required to be less than 0.05wt%, and the foreseeable future will require the sulfur content to be less than 350ppm or even lower. Whether this standard can be achieved largely depends on the content of sulfur-containing compounds such as 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene that are difficult to remove in the raw mat...

Claims

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Application Information

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IPC IPC(8): C10G45/04B01J32/00
Inventor 刘全杰方向晨徐会青贾立明王旭王伟
Owner CHINA PETROLEUM & CHEM CORP
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