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Distillate hydrogenation catalyst and its preparation method

A hydrotreating and catalyst technology, applied in the petroleum industry, refining hydrocarbon oil, etc., can solve problems such as unsatisfactory effects, and achieve the effect of high denitrification 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

Since the catalyst carrier uses unmodified alumina, its physical and chemical properties determine that its application is limited, especially for the saturation of aromatic hydrocarbons.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Modified alumina prepared according to the method provided by the invention.

[0051] 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

[0053]Modified alumina prepared according to the method provided by the invention.

[0054] 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

[0056] Modified alumina prepared according to the method provided by the invention.

[0057] 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 comprises molecular screen, modified aluminum oxide, active metal and organic auxiliary agent. The method comprises the following steps: using the aluminum oxide modified by titanium and silicon 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 hydrogenation treatment catalyst and a preparation method thereof, and is especially suitable for the hydrogenation desulfurization, hydrogenation denitrogenation and hydrogenation dearomatization processes of distillate oil and the preparation method thereof. Background technique [0002] The purpose of hydrotreating is to remove impurities in raw materials, such as sulfur, nitrogen, aromatics, residual carbon, metals, etc. With the increasing demand of human beings for light oil products, the quality requirements of environmental protection regulations on oil products are becoming more and more stringent, and crude oil is getting worse and worse, so hydroprocessing technology is even more important. [0003] At present, the method of desulfurization, denitrogenation and dearomatization of diesel fractions generally adopts a two-stage method, that is, the first stage of hydrodesulfurization and denitrogenation, and the secon...

Claims

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Application Information

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IPC IPC(8): C10G45/12
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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