Method for preparing hydrogenation catalyst composite

A hydrogenation catalyst and composition technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of high catalyst metal content, loss of activity, no discovery Active metal coordination effect and other problems, to achieve the effect of simple and reliable preparation process and overcoming difficult preparation

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
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  • 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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  • Method for preparing hydrogenation catalyst composite
  • Method for preparing hydrogenation catalyst composite
  • Method for preparing hydrogenation catalyst composite

Examples

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preparation example Construction

[0019] The catalyst preparation method provided by the present invention, 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 the active metal Ni component and additives according to the content ratio of the catalyst components. The nickel-containing salt can be nickel sulfate, nickel nitrate, nickel chloride, etc. Auxiliaries generally include one or more of P, F, Ti, Si, B, Zr, etc., and aluminum salts, such as aluminum chloride, aluminum nitrate, and aluminum sulfate, can also be added as needed. The solution B containing the active metal W component is prepared according to the content ratio of the catalyst components. The W component in the solution B exists in the form of sodium tungstate, and the solution B is an alkaline solution. Add material A and material B concurrently into a reaction tank with clean water to form a gel. The g...

Embodiment 1

[0030] Add 500mL of water into the dissolution tank 1, and dissolve 42g of nickel chloride to prepare an acidic working solution A. Add 500mL of water into the dissolution tank 2, add 35g of sodium tungstate to dissolve, adjust the pH value with 77g of sodium metaaluminate, and prepare alkaline working solution B. Add 350mL of water into the reaction tank, and the temperature rises to 60°C. Under the condition of stirring, add solution A and solution B into the reaction tank in parallel to form gel, the gel forming temperature is 60°C, the gel forming time is 0.5 hour, and the pH value of the slurry during the gel forming process is 8.0. Aging for 1 hour after gel forming. Then filter, add 600ml of clean water and 12g of molybdenum trioxide to the filter cake, beat and stir evenly, filter, dry the filter cake at 80°C for 5 hours, then extrude it, wash it with clean water for 3 times, and dry the wet bar at 120°C for 5 hours , and calcined at 500°C for 4 hours to obtain the f...

Embodiment 2

[0032] According to the method of Example 1, according to the composition ratio of the catalyst B in Table 1, nickel chloride, zirconium oxychloride and aluminum chloride were added into the dissolution tank 1 to prepare an acidic working solution A. Add sodium tungstate to the dissolution tank 2 and adjust the pH value with sodium hydroxide to prepare alkaline working solution B. Add 350mL of water into the reaction tank, and the temperature rises to 40°C. Under the condition of stirring, add solution A and solution B into the reaction tank in parallel to form a gel, the gel forming temperature is 40°C, the gel forming time is 2 hours, and the pH value of the slurry during the gel forming process is 8.5. 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, dry the filter cake at 70°C for 7 hours, then extrude it, wash it twice with clean water, wet the ba...

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Abstract

The invention discloses a method for preparing a hydrogenation catalyst composite, comprising the following steps of: (1) preparing a NixWyOz composite oxide precursor by using a coprecipitation method; (2) pulping, mixing and filtering the NixWyOz composite oxide precursor and MoO3; and (3) forming and activating the NixWyOz composite oxide precursor and the MoO3 to form a final catalyst, wherein the process of manufacturing the NixWyOz composite oxide precursor comprises the steps of: preparing acid solution A containing an active metal Ni component according to a component content proportion of the catalyst; preparing solution B containing an active metal W component according to the component content proportion of the catalyst; merging the solution A and the solution B, and adding the mixture of the solution A and the solution B into a reaction tank to gelatinize; and generating a deposited mixture to obtain the precursor containing the composite oxide NixWyOz. The catalyst prepared by the method has the advantages of uniform dispersion of metals, high use performance, and particularly higher activity for deep impurity removal process of hydrocarbon. The method is simple and convenient, and has low metal loss. The method is mainly used for preparing a bulk phase catalyst 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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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888C10G45/08
Inventor 徐学军王继锋刘东香王海涛冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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