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Vulcanized hydrogenation catalyst, preparation method therefor and application thereof

A hydrogenation catalyst and a sulfurized state technology are applied in the field of preparation of sulfurized hydrogenation catalysts, and can solve the problems of low sulfurization degree and the like

Active Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The object of the present invention is to overcome the defect that the degree of sulfidation obtained by sulfurizing the hydrogenation catalyst by the existing method is low, and to provide a method for preparing a sulfided hydrogenation catalyst capable of increasing the degree of sulfidation, obtained by the method Sulfide state hydrogenation catalyst and the application of said sulfide state hydrogenation catalyst in hydrodesulfurization reaction and / or hydrodearomatization reaction

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  • Vulcanized hydrogenation catalyst, preparation method therefor and application thereof

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preparation example Construction

[0024] The preparation method of the sulfurized state hydrogenation catalyst provided by the invention comprises the following steps:

[0025] (1) Prepare a hydrogenation catalyst in an oxidized state, the hydrogenation catalyst in an oxidized state includes a carrier and a nitrogen-containing organic substance and an active metal oxide supported on the carrier, and the nitrogen-containing organic substance has at least one at 200-400°C exothermic peak;

[0026] (2) In the presence of a sulfidation medium, the temperature of the oxidized hydrogenation catalyst is sequentially raised from room temperature at a rate of 1-20°C / h to each exothermic temperature of the nitrogen-containing organic compound between 200-400°C Constant temperature vulcanization at the temperature corresponding to the peak value for 1-5 hours, and then increase the temperature at a rate of 1-20 °C / h from the highest exothermic peak value of the nitrogen-containing organic matter between 200-400 °C The t...

Embodiment 1

[0045] This example is used to illustrate the sulfided hydrogenation catalyst provided by the present invention and its preparation method.

[0046] Prepare oxidation state hydrogenation catalyst A1 according to a conventional method, which includes alumina carrier and NiO and MoO supported on alumina carrier 3 Active metal components and nitrilotriacetic acid, wherein the molar ratio of carbon atoms to Ni metal atoms in the oxidation state hydrogenation catalyst A1 is 6:1, based on the total weight of the oxidation state hydrogenation catalyst, NiO and MoO 3The mass content is respectively 3% and 15%. Oxidized state hydrogenation catalyst A1 can decompose and release CO at 230°C-295°C and 300°C-400°C through the temperature-programmed oxidation method (heating rate is 10°C / min, the same below). 2 , CO 2 The temperatures corresponding to the release peaks were 230°C, 290°C and 370°C, respectively. The oxidized state hydrogenation catalyst A1 is vulcanized by a dry vulcaniza...

Embodiment 2

[0054] This example is used to illustrate the sulfided hydrogenation catalyst provided by the present invention and its preparation method.

[0055] Oxidation state hydrogenation catalyst B1 was prepared according to a conventional method, which included an alumina support and NiO and WO supported on the alumina support. 3 Active metal components and ethylenediaminetetraacetic acid, wherein the molar ratio of carbon atoms to Ni metal atoms in the oxidation state hydrogenation catalyst B1 is 8:1, based on the total weight of the oxidation state hydrogenation catalyst, NiO and WO 3 The mass content is respectively 2.5% and 20.5%. Oxidation hydrogenation catalyst B1 can decompose and release CO at temperatures between 200°C-295°C and 300°C-400°C as measured by the temperature-programmed oxidation method 2 , CO 2 The temperatures corresponding to the release peaks were 240°C, 270°C and 380°C, respectively. The oxidized state hydrogenation catalyst B1 is vulcanized by a dry vulc...

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Abstract

The invention provides a vulcanized hydrogenation catalyst, a preparation method therefor and application thereof. The preparation method for the vulcanized hydrogenation catalyst comprises the following steps: (1) preparing an oxidized hydrogenation catalyst, wherein the oxidized hydrogenation catalyst comprises a carrier, and a nitrogenous organic compound and an active metal oxide loaded on the carrier; the nitrogenous organic compound has at least one exothermic peak at 200-400 DEG C; and (2)in the presence of a curing media, successively increasing the temperature of the oxidized hydrogenation catalyst from a room temperature to the temperature corresponding to each exothermic peak of the organic alcohol compound at 200-400 DEG C at a rate of 1-20 DEG C / h; performing a constant temperature vulcanization for 1-5 hours; and finally increasing the temperature by 20-80 DEG C from the temperature corresponding to the highest temperature exothermic peak of a nitrogenous organic compound at 200-400 DEG C at the rate of 1-20 DEG C / h; and performing the constant temperature vulcanization for 1-5 hours. By adopting the preparation method provided by the invention, the degree of vulcanization of metals in the catalyst and the proportion of a two-layer-packed structure are improved, thus facilitating the improvement of the catalyst on hydrodesulfurization and hydrodearomatization activity.

Description

technical field [0001] The invention relates to a preparation method of a sulfide hydrogenation catalyst, a sulfide hydrogenation catalyst obtained by the method and an application of the sulfide hydrogenation catalyst in hydrodesulfurization reaction and / or hydrodearomatization reaction. Background technique [0002] Hydroprocessing is a pillar technology in the modern oil refining industry, which plays an important role in producing clean fuels, improving product quality, making full use of petroleum resources and raw material pretreatment. With the development of economy, environmental protection and society, oil refining enterprises have continuously put forward higher requirements for the activity and stability of hydrogenation catalysts, and the activity and selectivity of hydrogenation catalysts need to be continuously improved. Among them, the activity of hydrodesulfurization and hydrodearomatization is an important index to measure the performance of hydrogenation c...

Claims

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Application Information

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IPC IPC(8): B01J37/20B01J23/883B01J23/888B01J23/882C10G45/08
Inventor 陈文斌龙湘云李明丰刘学芬赵新强刘清河王奎聂红丁石
Owner CHINA PETROLEUM & CHEM CORP
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