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Method for preparing catalyst composition

A technology of catalysts and compositions, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of no active metal coordination effect, poor interaction catalyst strength, and high catalyst metal content

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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  • Method for preparing 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 mixed solution containing active metal Ni and W components is prepared according to the content ratio of the catalyst components. Nickel-containing salts can be nickel sulfate, nickel nitrate, nickel chloride and the like. The tungsten-containing salt can be sodium tungstate, ammonium metatungstate, etc. Then add the alkaline precipitant into the reaction tank equipped with clean water to form a gel. The gelation temperature is 30-80°C and the time is 0.5-3 hours. The pH value of the slurry in the reaction tank is in the range of 7.0-9.0. Adjust the adding speed of the two materials to make a gel-like mixture. After the gelation is completed, it can be aged at the gelation temperature for 1-5 hours. Gelling to form precipitates is the composite oxide Ni x ...

Embodiment 1

[0032] Add 1000mL of water into the dissolution tank, then add 33g of nickel chloride to dissolve, then add 30g of ammonium metatungstate to dissolve, and prepare acidic working solution A, the pH of solution A is 1.8. Add 350mL of water into the reaction tank, and the temperature rises to 70°C. Under the condition of stirring, the solution A and 18% ammonia water were added into the reaction tank in parallel to form a gel. The gelation temperature was 70° C., the gelation time was 0.5 hours, and the pH value of the slurry during the gelation process was 8.5. Aging for 1 hour after gel forming. Then filter, add 600ml of clean water, 25g of molybdenum trioxide and 47g of aluminum hydroxide to the filter cake, make a slurry and stir evenly, filter, dry the filter cake at 80°C for 5 hours, extrude it, wash it 3 times with clean water, and put the wet bar in After drying at 120°C for 5 hours and calcining at 500°C for 4 hours, the final catalyst A was obtained. The composition an...

Embodiment 2

[0034] According to the method of Example 1, according to the composition ratio of catalyst B in Table 1, aluminum chloride, nickel chloride, ammonium metatungstate and zirconium oxychloride were added to the dissolution tank to prepare acidic working solution A. Add 350mL of water into the reaction tank, and the temperature rises to 40°C. Under the condition of stirring, solution A 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 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, dry the filter cake at 70°C for 7 hours, then extrude it, wash it twice with clean water, wet the bar It was dried at 100°C for 8 hours and calcined at 550°C for 3 hours to obtain the final catalyst B. T...

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Abstract

The invention relates to a method for preparing catalyst compound. Wherein, it uses deposition method to generate the forward body of NixWyOz compound oxide; then mixing and beating with MoO3, filtering, shaping and activating to obtain the final catalyst. The deposition process comprises that adding the salt mixture with active metals Ni and W into the reaction pot, combining it with alkali deposit agent, to be put into reaction pot to form paste; the pH value of reaction pot is 7.0-9.0; obtaining the gel mixture as the forward body. The invention can improve the catalyst property, with high metal content.

Description

technical field [0001] The present invention relates to a preparation method of a catalyst composition, in particular to a preparation method of a bulk catalyst composition, in particular to a preparation method of a bulk catalyst for hydroconversion or hydrotreating of hydrocarbon oil, in particular The invention relates to a method for preparing a bulk catalyst for 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 experts including North America, Europe, and Japan have proposed the concept of ultra-low sulfur diesel (ULSD) and have continuously formulated new fuel specifications to limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/84C10G45/04
Inventor 徐学军冯小萍王继锋刘东香王海涛
Owner CHINA PETROLEUM & CHEM CORP
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