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Preparation process for hydrogenation catalyst composition

A technology of hydrogenation catalyst and composition, which is applied in the direction of refining to remove heteroatoms, etc. It can solve the problems of poor interaction catalyst strength, no active metal coordination effect, high catalyst metal content, etc.

Active Publication Date: 2007-04-25
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high metal content of the catalyst prepared by this method, there is often a lack of sufficient interaction between the metal and alumina, resulting in poor catalyst strength
The active component part is composed of a large number of metals, and some internal metal components cannot be fully utilized during the formation of Ni-Mo or Ni-Mo-W powder, resulting in loss of activity, and this problem cannot be solved by simple bonding
CN1342102A discloses a mixed metal catalyst, which is obtained by co-precipitating three active metals. Its main disadvantage is that no coordination effect between different active metals has been found
In the prior art, only the types and contents of metals are emphasized, and how to improve the coordination and cooperation between different metals is not involved

Method used

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  • Preparation process for hydrogenation catalyst composition

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preparation example Construction

[0019] The invention provides the preparation method of catalyst, a kind of concrete process step is as follows:

[0020] 1. Ni x W y o z Complex oxide precursors and MoO 3 Preparation of the mixture

[0021] Prepare the salt mixed solution A containing active metal Ni and W components according to the content ratio of the catalyst components. The nickel-containing salt can be nickel sulfate, nickel nitrate, nickel chloride, etc. The tungsten-containing salt can be sodium tungstate, ammonium metatungstate, etc. A salt mixture material B containing additives (taking aluminum as an example) and auxiliary agents is prepared according to the content ratio of the catalyst components. The aluminum salt solution may be aluminum nitrate, aluminum sulfate, aluminum chloride or aluminum acetate. Auxiliaries generally include one or more of P, F, Ti, Si, B, Zr, etc. Put the material B and alkaline precipitant into the reaction tank equipped with clean water to form gel, the gel fo...

Embodiment 1

[0032] Add 500mL of water into the dissolution tank 1, dissolve 40g of nickel chloride, then add 44g of ammonium metatungstate to dissolve, and prepare acidic working solution A. Add 500mL of water into the dissolution tank 2, then add 48g of aluminum chloride to dissolve, and prepare acidic working solution B. Add 350mL of water into the reaction tank, and the temperature rises to 60°C. Under the condition of stirring, the solution B and 18% ammonia water were added into the reaction tank in parallel to form a gel. The gelation temperature was 60° C., the gelation time was 0.5 hours, and the pH value of the slurry during the gelation process was 9.0. Then solution A is added in the reaction tank, and then 18% ammonia water is added to make the pH value of the slurry be 8.5. Aging for 1 hour after gel forming. Then filter, add 600ml of clean water and 18g of molybdenum trioxide to the filter cake, beat and stir evenly, filter, dry the filter cake at 80°C for 5 hours, then ex...

Embodiment 2

[0034] According to the method of Example 1, according to the composition ratio of the catalyst B in Table 1, nickel chloride and ammonium metatungstate were added into the dissolution tank 1 to prepare the acidic working solution A. Add aluminum chloride and zirconium oxychloride to the dissolution tank 2 to prepare acidic working solution B. Add 350mL of water into the reaction tank, and the temperature rises to 40°C. Under the condition of stirring, the solution B and 10% ammonia water were added into the reaction tank in parallel to form a gel, the gel forming temperature was 40°C, the gel forming time was 2 hours, and the pH value of the slurry during the gel forming process was 10.0. Then add solution A in the reaction tank, and then add 10% ammonia water to make the pH value of the slurry be 8.0. Aging for 2 hours after gel forming. Then filter, wash the filter cake twice with 500mL of clean water, add clean water and molybdenum trioxide, beat and stir evenly, filter,...

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Abstract

The invention relates to the preparing method of a catalyst compound. The invention adopts coprecipitation to produce compound oxide predecessor, then pulp the predecessor and MoO3. After mixing the pulp, filtering, shaping and activating, the producers can get the catalyst. The producing procedure of NixWyOz includes the following steps: preparing the mixture that contains Ni and W, adding strong aqua to get A solution; preparing the mixture B that contains the added sunstances, mix mixture B with strong aqua to get the gel and add A to the gel; heating the material to vaporize the ammonia until the pH value reaches 7.0-9.0. The metal in the catalyst spreads uniformly. It has high using efficiency, especially in the process of deep de-impurity process of alkanes. The invention is characterized by simple method and low metal loss rate and it's mainly used to produce catalysts with higher metal content.

Description

technical field [0001] The present invention relates to a preparation method of a hydrogenation catalyst composition, in particular to a preparation method of a bulk catalyst composition, in particular to a preparation method of a bulk catalyst for hydrocarbon oil hydroconversion or hydrotreating, in particular It is a preparation method of a bulk catalyst used in the deep desulfurization, denitrogenation and other impurity removal processes of hydrocarbon oil. Background technique [0002] Fuel contains S, N and other impurities and aromatics (especially polycyclic aromatics), which will form harmful substances such as SOx, NOx and solid particles during use, which not only endanger human health, but also form acid rain in the air, causing greater pollution and destruction. In the past ten years, many countries including North America, Europe, and Japan have proposed the concept of ultra-low sulfur diesel (ULSD) and continuously formulated new fuel specifications to limit ...

Claims

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Application Information

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IPC IPC(8): C10G45/06
Inventor 徐学军王海涛王继锋刘东香冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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