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Process for preparation of hydrogenation catalyst composition

A technology of hydrogenation catalyst and composition, applied in refining to remove heteroatoms, etc., can solve the problems of loss of activity, high content of catalyst metal, and no coordination effect of active metal found.

Active Publication Date: 2007-04-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • 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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  • Process for preparation of 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] A salt mixture containing active metal Ni and W components is prepared according to the proportion of catalyst components. Nickel-containing salts can be nickel sulfate, nickel nitrate, nickel chloride, basic nickel carbonate and the like. The tungsten-containing salt can be sodium tungstate, ammonium metatungstate, tungstic acid, etc. After mixing evenly, add concentrated ammonia water to the above mixture under stirring until a dark blue solution A is formed, and the pH value of solution A is 10.0-13.0. The weight concentration of ammonia water is generally 15% to 35%. 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 solutio...

Embodiment 1

[0032] Add 500mL of water into the dissolution tank 1, dissolve 28g of nickel chloride, then add 52g of ammonium metatungstate to dissolve, then add 25% ammonia water until a dark blue solution A is formed, and the pH of the solution is 11.0. Add 500mL of water into the dissolution tank 2, then add 64g 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 25% 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 add solution A into the reaction tank, raise the temperature to 80°C, distill ammonia for 2 hours, the pH value is 8.0, and age for 2 hours after gel formation. Then filter, add 600ml of clean water and 18g of molybdenum trioxide to the filter cake, beat and st...

Embodiment 2

[0034] According to the method of Example 1, according to the component content ratio of catalyst B in Table 1, nickel chloride and ammonium metatungstate are added to the dissolution tank 1, and then 30% ammonia water is added until a dark blue solution A is formed, and the pH value of the solution is is 12.0. 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 30% 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 into the reaction tank, raise the temperature to 95°C, distill ammonia for 3 hours until the pH value is 7.5, and age for 1 hour after gel formation. Then filter, wash the filter cake twice w...

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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, mixing mixture B with strong aqua to get the gel and adding A to the gel; heating the material to vaporize the ammonia until the ph value reaches 7.5-9.0. The metal in the catalyst spreads uniformly and the volume of the bore is very large, so the catalyst can process heavy materials. The activity during the deep de-impurity process is even higher. 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): C10G45/04
Inventor 徐学军刘东香王继锋王海涛冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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