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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  • Summary
  • Abstract
  • Description
  • Claims
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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 prob

Method used

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  • Preparation process for hydrogenation catalyst composition

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Example Embodiment

[0019] The present invention provides a method for preparing a catalyst. A specific process step is as follows:

[0020] 1. Ni x W y O z Composite oxide precursor and MoO 3 Preparation of the mixture

[0021] According to the catalyst component content ratio, a salt mixed solution A containing active metal Ni and W components is prepared, and the nickel-containing salt can be nickel sulfate, nickel nitrate, nickel chloride, etc. The tungsten-containing salt may be sodium tungstate, ammonium metatungstate, and the like. According to the content ratio of the catalyst components, a salt mixture B containing additives (taking aluminum as an example) and auxiliary agents is prepared. The aluminum salt solution can be aluminum nitrate, aluminum sulfate, aluminum chloride, aluminum acetate, or the like. Additives generally include one or more of P, F, Ti, Si, B, Zr, etc. The material B and alkaline precipitation agent are co-flowed into a reaction tank filled with purified water to form ...

Example Embodiment

[0031] Example 1

[0032] Add 500 mL of water to the dissolution tank 1 to dissolve 40 g of nickel chloride, and then add 44 g of ammonium metatungstate to dissolve to prepare acidic working solution A. Add 500 mL of water to the dissolution tank 2, and then add 48 g of aluminum chloride to dissolve, and prepare acidic working solution B. Add 350 mL of water to the reaction tank, and the temperature rises to 60°C. Under the condition of stirring, the solution B and 18% ammonia water were co-flowed into the reaction tank 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 was added to the reaction tank, and 18% ammonia was added to make the slurry pH 8.5. Aging for 1 hour after gelation. Then filter, add 600ml purified water and 18g molybdenum trioxide to the filter cake, beat and stir evenly, filter, the filter cake is dried at 80℃ for 5 hours, then extruded, washed ...

Example Embodiment

[0033] Example 2

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

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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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