Hydrotreating catalyst and preparation method thereof

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of limited metal active sites, increase catalyst pore volume, Reduce the mechanical strength and other problems, to achieve the effect of reducing nitrogen content, improving mechanical strength, and increasing distribution

Active Publication Date: 2016-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The bulk phase hydrogenation catalyst disclosed by CN102049265A adds ammonium bicarbonate during the coprecipitation process, and the bulk phase hydrogenation catalyst disclosed by CN102451703A adds carbon dioxide during the coprecipitation process to generate carbonate or bicarbonate. It releases a certain amount of gas during the roasting process. Under the impact o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] Dissolve nickel chloride, ammonium metatungstate and aluminum chloride solutions in clean water respectively to prepare a mixed solution containing acidic components. The weight concentration of NiO in the mixed solution is 20g / L, WO 3 The weight concentration is 40g / L, Al 2 o 3 The weight concentration is 26g / L. Raise the temperature of the mixed solution of the acidic components to 60°C. Under stirring, add ammonia water with a concentration of 10wt% dropwise into the acidic solution for reaction. The value is 7.8. Aging for 2 hours after gel forming. Then filter, the filter cake is subjected to hydrothermal treatment under water vapor containing urea, hydrothermal treatment conditions: the molar ratio of urea to the total amount of active metal tungsten and nickel atoms is 5:1, the temperature is 240°C, the pressure is 5.0MPa, and the treatment time is 3 hours After the material after hydrothermal treatment is beaten and stirred evenly, molybd...

Example Embodiment

[0037] Example 2

[0038] 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 an acidic working solution. The temperature of the acidic component mixed solution was raised to 50°C. Under the condition of stirring, ammonia water with a concentration of 12wt% was added dropwise to the acidic solution for reaction, the gelling temperature was 50°C, the gelling time was 1.5 hours, and the pH value of the slurry during the gelling process was 8.0. Aging for 2 hours after gel forming. Then filter, the filter cake is subjected to hydrothermal treatment under water vapor containing urea, hydrothermal treatment conditions: the molar ratio of urea to the total amount of active metal tungsten and nickel atoms is 4:1, the temperature is 250°C, the pressure is 4.0MPa, and the treatment time is 5 hours , After the...

Example Embodiment

[0039] Example 3

[0040] According to the method of Example 1, according to the composition ratio of catalyst C in Table 1, nickel chloride, phosphoric acid, aluminum chloride, and ammonium metatungstate were added to the dissolution tank to prepare an acidic working solution. Raise the temperature of the mixed solution of the acidic components to 45°C, and under stirring, add ammonia water with a concentration of 10wt% dropwise into the acidic solution for reaction, the gelling temperature is 45°C, the gelling time is 1.2 hours, the pH The value is 7.6. Aging for 2 hours after gelling. Then filter, the filter cake is subjected to hydrothermal treatment under water vapor containing urea, hydrothermal treatment conditions: the molar ratio of urea to the total amount of active metal tungsten and nickel atoms is 3:1, the temperature is 230°C, the pressure is 6.0MPa, and the treatment time is 4 hours After the hydrothermally treated material is beaten and stirred evenly, molybd...

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Abstract

The invention discloses a hydrotreating catalyst and a preparation method thereof. The catalyst is a bulk-phase catalyst; components of the hydrotreating catalyst comprise hydrogenation active metal ingredients W, Ni and Mo, and aluminum oxide, wherein the W and the Ni exist in the form of a compound oxide: NixWyOz; the Mo exists in the form of MoO3. The active-site density of the active metal W and Ni in the epiphase of the catalyst is high; the utilization rate of hydrogenation active metal is high; meanwhile, the pore structures of the catalyst are reasonable; the active metal is more uniformly dispersed; the mechanical strength is high; the hydrotreating catalyst is particularly suitably applied to the ultra-deep hydrodesulfurization and denitrification reactions of a diesel fraction.

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 clean fuel. The development and use of ultra-low sulfur or even sulfur-free gasoline and diesel is the trend of clean fuel development in the world today. The use of traditional hydrodesulfurization catalysts can also achieve deep desulfurization or even ultra-deep desulfurization of diesel oil by increasing the severity of the reaction, such as increasing the reaction temperature, hydrogen partial pressure or reducing the reaction space velocity, but the increase in t...

Claims

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Application Information

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