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Hydrogenation catalyst and preparation method and application thereof and hydrogenation refining method

A hydrogenation catalyst and catalyst technology, which are applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low hydrogenation catalyst activity, complex preparation process, poor controllability, etc., and achieve savings Start-up cycle, high catalytic performance, and the effect of improving hydrogenation performance

Active Publication Date: 2019-10-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the defects of low activity of hydrogenation catalysts in the prior art, relatively complicated preparation process, poor controllability and high cost, the present invention provides a new hydrogenation catalyst, a method for preparing a hydrogenation catalyst and a hydrogenation catalyst prepared by the method The hydrogenation catalyst that obtains and the application of above-mentioned hydrogenation catalyst and a kind of method of hydrogenation refining

Method used

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  • Hydrogenation catalyst and preparation method and application thereof and hydrogenation refining method
  • Hydrogenation catalyst and preparation method and application thereof and hydrogenation refining method
  • Hydrogenation catalyst and preparation method and application thereof and hydrogenation refining method

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preparation example Construction

[0045] The second aspect of the present invention provides a kind of preparation method of hydrogenation catalyst, and this preparation method comprises the following steps:

[0046] (1) The carrier is impregnated with tetrathiotungstate solution, and dried to obtain solid A;

[0047] (2) The solid A is impregnated with a solution containing a Group VIII metal salt, and then heat-treated in an inert atmosphere or a reducing atmosphere to obtain a hydrogenation catalyst. The heat treatment makes the tungsten element in the hydrogenation catalyst exist in the form of trisulfide, Group VIII metal elements exist in the form of salts.

[0048] The third aspect of the present invention provides a kind of preparation method of hydrogenation catalyst, and this preparation method comprises the following steps:

[0049] (1) The carrier is impregnated with a tetrathiotungstate solution, and then heat-treated in an inert atmosphere or a reducing atmosphere to obtain a composite material ...

Embodiment approach

[0064] In the present invention, in order to obtain a better water-soluble effect of the tungsten-containing compound, a co-solvent can be added appropriately. According to a preferred embodiment of the present invention, the method further includes introducing a co-solvent into step a), and the co-solvent is selected from at least one of ammonia water, phosphoric acid and oxalic acid. In the present invention, there is no special limitation on the addition amount of the co-solvent, as long as a better water-soluble effect can be obtained.

[0065] The present invention has a wide range of options for the amount of organic sulfur source and tungsten-containing compound, as long as the molar ratio of the organic sulfur source calculated as sulfur element to the tungsten-containing compound calculated as metal element is not less than 2, preferably 2.5- 5:1, more preferably 3-4:1. Adopting this preferred embodiment can not only meet the reaction requirements of the two, but als...

Embodiment I-1

[0115] (1) Preparation of tetrathiotungstate solution

[0116] Mix sodium tungstate with water, stir for 40 minutes, add thioacetamide, stir for 30 minutes, and prepare 100 mL of sodium tungstate containing 0.25 mol / L (in WO 3 To a solution of 1mol / L thioacetamide, add ammonia water to adjust the pH to 9, under airtight conditions, heat it to 85°C for 10h, then concentrate it to 15mL; UV- Vis test, analysis shows that WS in solution 4 2- The existence of , proves that the substance obtained by the reaction is a tetrathiotungstate solution. In addition, the solution changes from colorless to orange at the beginning, which further proves that WS 4 2- The presence.

[0117] (2) Preparation of hydrogenation catalyst

[0118] Saturated and impregnated the above tetrathiotungstate solution in 20g of γ-Al with a diameter of 1-3mm 2 o 3 Carrier (specific surface area 251m 2 / g, the pore volume is 0.75mL / g, the same below, the XRD pattern is as follows figure 1 shown), the imm...

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Abstract

The invention relates to the field of hydrogenation, and discloses a hydrogenation catalyst and a preparation method and application thereof and a hydrogenation refining method. The hydrogenation catalyst comprises a carrier and an active metal component loaded on the carrier, the active metal component comprises tungsten and at least one group VIII metal element, the tungsten exists in the form of trisulfide, and the group VIII metal element exists in the form of salt. The preparation method of the hydrogenation catalyst comprises the steps that a solid A is obtained by impregnating the carrier with a tetrathiotungstate solution, the solid A is impregnated with a solution containing group VIII metal salt, heat treatment is performed under inert or reducing atmosphere, or the carrier is impregnated with the tetrathiotungstate solution, and then heat treatment is performed under the inert or reducing atmosphere to obtain a composite material A, and the composite material A is impregnated with the solution containing the group VIII metal salt. According to the preparation method, the vulcanization process is eliminated, and the hydrogenation performance of the catalyst is improved obviously.

Description

technical field [0001] The invention relates to the field of hydrogenation, in particular to a hydrogenation catalyst, a preparation method and application thereof, and a hydrogenation refining method. 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. 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. Among them, Co, Ni, Mo and W active components exist in the form of oxides. However, in actual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/049B01J37/02C10G45/08
CPCB01J27/049B01J37/0213C10G45/08
Inventor 韩伟龙湘云杨清河赵新强贾燕子邵志才
Owner CHINA PETROLEUM & CHEM CORP
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