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Prepn process of hydroprocessing catalyst

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the structural damage of alumina and affect the particle size of aluminum hydroxide , titanium distribution and other issues, to achieve the effect of improving performance

Active Publication Date: 2007-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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Problems solved by technology

Its disadvantage is that due to the strong acidity of titanium tetrachloride solution, it has a certain destructive effect on the structure of alumina.
The titanium-containing aluminum hydroxide obtained by this method has a relatively uniform distribution of titanium, but due to the addition of solid particles (although its particle size is less than 65 μm), aggregates will be produced when the sodium metaaluminate solution reacts with carbon dioxide to form a gel, which affects the aluminum hydroxide. particle size, and the distribution of titanium in aluminum hydroxide is also affected

Method used

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  • Prepn process of hydroprocessing catalyst

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Effect test

Embodiment 1

[0025] The preparation concentration is 30gAl 2 O 3 / l, sodium meta aluminate solution with Na to Al atomic ratio of 1.4. Take a certain amount of sodium metaaluminate solution and place it in the gel forming kettle, adjust the pH to 14, the temperature at 25°C, and start to pass in carbon dioxide gas with a concentration of 40v%. While the carbon dioxide is passed through, add the pH value under stirring. For the titanium trichloride solution of 2, when the pH value becomes 6.5, add sodium metaaluminate solution to make the pH value 10.5 and stir for 5-10 minutes; repeat the above steps once, and then the slurry pH value is 10.5 Stop the carbon dioxide gas at the time. The slurry was aged for 1.0 hour. Filter and wash with deionized water until the aluminum hydroxide contains Na + When the weight is less than 0.05wt%, dry (120°C) for 4 hours, and then crush to 180 mesh. Weigh 50g of the titanium-containing aluminum hydroxide dry rubber powder, add 35g of ammonium molybdate solutio...

Embodiment 2

[0027] Compared with Example 1, the atomic ratio of Na to Al in the sodium metaaluminate solution is changed to 1.6, and the amount of other materials and operating conditions are the same as in Example 1, that is, the product B of the example is cost.

Embodiment 3

[0029] Compared with Example 1, the process of changing the pH value of the sodium metaaluminate solution from 14 to 6.5 and then to 10.5 was repeated three times. The amount of other materials and operating conditions were the same as in Example 1, that is, the cost example product C.

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Abstract

The present invention relates to preparation process of hydrocarbon hydroprocessing catalyst, which has gamma-Al2O3 as carrier, VIB and VIII metal as the active component, and Ti, etc as the active assistant, with the assistant Ti being introduced in the pH swinging carbonization process for producing aluminum hydroxide. The process of preparing the catalyst is one complete mixing and kneading process including the steps of introducing Ti to aluminum hydroxide powder via adding Ti salt solution, adding Mo and / or W containing alkaline solution, mixing and kneading until the aluminum hydroxide powder is wetted completely by the alkaline solution, adding Co and / or Ni containing acid solution, mixing and kneading to obtain plastic material, extruding, drying, and roasting to obtain the catalyst. The catalyst has homogeneously distributed Ti component and obviously raised performance.

Description

Technical field [0001] The invention relates to a method for preparing a heavy hydrocarbon hydrotreating catalyst, in particular to a method for preparing a heavy and residual oil hydrodesulfurization catalyst. Background technique [0002] In recent years, people's attention has been paid to the residual oil hydrotreating process. With the need for deep processing of residual oil and increasing requirements for environmental protection, more extensive and in-depth research must be carried out on residual oil hydroprocessing catalysts to continuously develop new catalysts to meet actual needs. [0003] As we all know, catalyst physical and chemical properties, such as the most probable pore size, surface area, and average pore size, play an important role in the activity stability of the catalyst. For heavy distillate oil, especially residual oil, the content of metal impurities (such as Ni, V, etc.) is high. If the pore size of the catalyst is small (less than 10nm), the interna...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J23/883B01J23/882B01J21/06B01J21/04
Inventor 隋宝宽蒋绍洋赵愉生刘喜来
Owner CHINA PETROLEUM & CHEM CORP
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