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Sulfurized hydrogenation catalyst and its preparation method and application

A hydrogenation catalyst and sulfide-type technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low activity of sulfide-type hydrogenation catalysts, complicated preparation process, poor controllability, etc. , to achieve the effect of high utilization rate of active metal, low preparation cost and excellent degree of sulfidation

Active Publication Date: 2022-03-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the defects of low activity, relatively complicated preparation process, poor controllability and high cost of the prior art sulfurized hydrogenation catalyst, the present invention provides a new preparation method of sulfurized hydrogenation catalyst and the preparation method The obtained sulfurized hydrogenation catalyst and the application of the above sulfurized hydrogenation catalyst in hydrodesulfurization and / or hydrodenitrogenation, the method provided by the invention saves the sulfuration process, and the prepared catalyst active components are not only highly dispersed , and fully vulcanized, which promotes the production of more Co(Ni)-Mo(W)-S active centers, and finally significantly improves the hydrogenation performance of the catalyst

Method used

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  • Sulfurized hydrogenation catalyst and its preparation method and application
  • Sulfurized hydrogenation catalyst and its preparation method and application
  • Sulfurized hydrogenation catalyst and its preparation method and application

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preparation example Construction

[0023] The invention provides a kind of preparation method of vulcanization type hydrogenation catalyst, this method comprises the following steps:

[0024] (1) Prepare solution A containing VIB group metal salt, sulfur source and optionally a water-soluble organic dispersant, the sulfur source is a sulfur-containing substance that can be hydrolyzed at 50-100° C. under acidic conditions, and the solution A The pH value is 1-8;

[0025] (2) aging the solution A described in step (1) at 20-120° C. for 0.5-48 hours to obtain an aging product;

[0026] (3) using the aging product to impregnate the catalyst carrier;

[0027] (4) Roasting the impregnated solid material in step (3) in an inert or reducing atmosphere;

[0028] The method also includes the step of introducing Group VIII metal elements in step (1) and / or step (3).

[0029]In the present invention, solution A is adjusted to an appropriate pH value in step (1), and then aging treatment is carried out under the conditio...

Embodiment 1

[0061] (1) Prepare 40mL of a solution containing 2.4mol / L sodium molybdate and 8.0mol / L thioacetamide, add dropwise (speed is 1mL / min) 4.5mL absolute ethanol in the process of constant stirring, and then During the stirring process, 2.4mol / L hydrochloric acid was added dropwise to adjust the pH value to 6 to obtain solution A;

[0062] (2) aging the solution A obtained in step (1) at 60° C. for 24 hours to obtain an aging product;

[0063] (3) Add 9.0 g of nickel acetate to the aging product described in step (2), add water to constant volume or heat and concentrate to 48 mL, impregnate 60.0 g of γ-Al with a diameter of 1-5 mm in this solution 2 o 3 Granules (liquid absorption rate 0.8mL / g), immersion time is 1 hour;

[0064] (4) The solid product impregnated in step (3) was dried at 50° C. for 3 hours in a nitrogen atmosphere, and then 2 In the atmosphere, the temperature was raised to 300°C at a rate of 5°C / min and kept for 1h, and then the temperature was raised to 360°C...

Embodiment 2

[0073] (1) Prepare 40 mL of a solution containing 2.4 mol / L of sodium molybdate, 0.9 mol / L of nickel acetate, and 9.0 mol / L of thioacetamide, and add it dropwise during constant stirring (at a speed of 1 mL / min) 3mL of acetone, and then during stirring, dropwise add 2.4mol / L hydrochloric acid to adjust the pH value to 6 to obtain solution A;

[0074] (2) aging the solution A obtained in step (1) at 60° C. for 24 hours, adding water to constant volume or heating and concentrating to 48 mL to obtain an aging product;

[0075] (3) impregnate 60.0g of gamma-Al with a diameter of 1-5mm with the aging product described in step (2) 2 o 3 Granules (liquid absorption rate 0.8mL / g), immersion time is 2 hours;

[0076] (4) The solid product impregnated in step (3) was dried at 50° C. for 3 hours in a nitrogen atmosphere, and then 2 In the atmosphere, the temperature was raised to 300°C at a rate of 5°C / min and kept for 1h, and then the temperature was raised to 360°C at a rate of 20°C...

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Abstract

The invention relates to the field of hydrofining, and discloses a sulfurized hydrogenation catalyst and its preparation method and application. The preparation method comprises: (1) preparing a catalyst containing a VIB group metal salt, a sulfur source and optionally a water-soluble organic dispersant solution A, the pH value of the solution A is 1-8; (2) aging the solution A described in the step (1) at 20-120° C. for 0.5-48 hours to obtain an aging product; (3) using The aging product impregnates the catalyst carrier; (4) roasting the impregnated solid material in step (3) in an inert or reducing atmosphere; the method also includes introducing VIII in step (1) and / or step (3) Steps of group metal elements. The method provided by the invention omits the vulcanization process, and the prepared catalyst active components are not only highly dispersed, but also fully vulcanized, and finally the hydrogenation performance of the catalyst is obviously improved.

Description

technical field [0001] The invention relates to the field of hydrofining, in particular to a preparation method of a sulfurized hydrogenation catalyst, the sulfurized hydrogenation catalyst prepared by the method and its application in hydrodesulfurization and / or hydrodenitrogenation. Background technique [0002] Hydrogenation technology is the most important means of producing clean oil products, among which efficient hydrogenation catalyst is the core technology of hydrogenation technology. The main active component is VIB group metal W or Mo, the VIII group metal Ni or Co is the auxiliary active component, and γ-A1 2 o 3 or modified γ-A1 2 o 3 The supported catalyst is a hydrogenation catalyst widely used in industry at present. [0003] The traditional preparation technology mainly uses impregnation to introduce the oxidized precursor of the active component into the pores of the carrier, and then aging, drying, and roasting to obtain the hydrogenation catalyst. Am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J27/049B01J37/20B01J37/03B01J37/02B01J37/08B01J37/18C10G45/08
CPCC10G45/08B01J27/049B01J27/0515B01J37/0203B01J37/031B01J37/08B01J37/18B01J37/20C10G2300/202
Inventor 韩伟高杨龙湘云李明丰杨清河聂红邓中活
Owner CHINA PETROLEUM & CHEM CORP