Hydrotreating catalyst and preparation method thereof

A catalyst and hydrogen treatment technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of no active metal coordination effect and interaction catalyst strength Poor, high catalyst metal content and other problems, to achieve the effect of reducing the preparation cost, increasing the pore size and pore volume, and improving the pore structure

Active Publication Date: 2011-05-11
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
CN 1342102A discloses a mixed metal catalyst, which is obt

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  • Hydrotreating catalyst and preparation method thereof
  • Hydrotreating catalyst and preparation method thereof
  • Hydrotreating catalyst and preparation method thereof

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preparation example Construction

[0028] The invention provides the preparation method of catalyst, a kind of concrete process step is as follows:

[0029] 1. Ni x W y o z Complex oxide precursors and MoO 3 Preparation of the mixture

[0030] Prepare a salt mixed solution containing active metal Ni, W, Al 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. The aluminum salt solution may be aluminum nitrate, aluminum sulfate, aluminum chloride or aluminum acetate. Then, water-soluble nitrogen-containing compound and precipitant ammonia water are simultaneously added into the reaction tank equipped with clean water to form a gel. The gelation temperature is 30-80°C, and the time is 0.5-5.0 hours. The pH value of the slurry in the reaction tank is 7.0 Within the range of ~9.0, adjust the adding speed of the three materials to make a gel-like mixture. After gelling, it can...

Embodiment 1

[0038] Add 1000mL of water into the dissolution tank, add 40g of nickel chloride and 34g of ammonium metatungstate to dissolve, and add the solubility to 10.9g / cm -3 495 milliliters of aluminum chloride solution, preparation acid working solution A, the pH value of solution A is 1.8, gets 160g ammonium bicarbonate and is made into the aqueous solution that molar concentration is 2.5mol / l. Add 350mL of water into the reaction tank, and the temperature rises to 70°C. Under the situation of stirring, solution A, ammonium bicarbonate aqueous solution, and concentration are 18% (weight) ammonia water and flow into the reaction tank in parallel to form a gel. The gelation temperature is 70° C., and the gelation time is 0.5 hour. The value is 8.5. Aging for 1 hour after gel forming. Then filter, add 600ml of clean water and 6.3g 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...

Embodiment 2

[0040] According to the method of Example 1, according to the component content ratio of catalyst B in Table 1, add aluminum chloride, nickel chloride, ammonium metatungstate and zirconium oxychloride to prepare acidic working solution A in the dissolution tank, take 100g Ammonium bicarbonate is made into a solution with a molar concentration of 2.0 mol / l. Add 350mL of water into the reaction tank, and the temperature rises to 55°C. Under the situation of stirring, solution A, ammonium bicarbonate aqueous solution and concentration are 10% (weight) ammonia water and flow into the reaction tank to form gel, the gel forming temperature is 55 ℃, the gel forming time is 2 hours, the pH The value is 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...

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Abstract

The invention discloses a bulk hydrotreating catalyst and a preparation method thereof. The catalyst comprises three active metal components, namely Mo, W and Ni, and the sum of active metal oxides is 30 to 70 weight percent. In the method, a proper amount of water-soluble nitrogen-containing compound is added in the bulk catalyst gelatinating process, the pore structure of the catalyst is improved, more metal active sites are exposed on the surface of the catalyst, the utilization rate of active metals is improved, the catalyst has obviously high activity compared with the common bulk catalyst under the condition of the same metal content, and the consumption of the active metals for the common bulk catalyst can be reduced and the preparation cost of the catalyst can be reduced under thecondition of the equivalent activity. In addition, the bulk catalyst has increased pore diameter and pore volume, the Ni-W high active center is fully utilized, complicated macromolecules are easier to contact the active center, and the effect is particularly more obvious when the catalyst treats distillates with high macromolecule content.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst and a preparation method thereof, in particular to a high-activity bulk phase hydrogenation treatment catalyst and a preparation method thereof. Background technique [0002] At present, in the world, crude oil is becoming increasingly heavy and inferior, coupled with the continuous development of the world economy and increasingly stringent environmental protection regulations, it is necessary to produce a large amount of light and clean fuels, all of which require the improvement and improvement of the existing refining technology. Produce products that meet the requirements at the lowest cost. Crude oil and various distillates obtained from crude oil contain impurities such as sulfur, nitrogen, oxygen and metals. The existence of these impurities not only affects the stability of the oil, but also emits SO during use. x , NO x and other harmful gases pollute the environment. During the ...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J27/19B01J35/10C10G45/08
Inventor 王海涛徐学军王继锋刘东香冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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