Multi-metal body catalyst for ultra-deep desulphurization and denitrogenation as well as hydrofining and preparation method thereof

A bulk catalyst and deep desulfurization technology, applied in the field of petrochemical industry, can solve problems such as waste, strong ammonia water will pollute the environment, and is not easy to decompose, achieve high hydrodesulfurization and hydrodenitrogenation activity, simple synthesis process, and ensure full contact Effect

Active Publication Date: 2017-01-04
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This synthetic method has the following disadvantages: the strong ammonia water used in the synthetic process can pollute the environment; Ni 2+ The complex formed with ammonia is stable and difficult to decompose, resulting in residual Ni ammonium complex ions in the final mother liquor, resulting in pollution and waste; the prepared catalyst specific surface area and pore volume are less (respectively less than 120m 2 /g and 0.2ml/g), which is not conducive to the diffusion of reactants in the catalyst; when used in diesel hydrodesulfurization reaction, it can only show excellent hydrodesulfurization activity under a high pressure higher than 6MPa, so that the catalyst has no effect on the reaction device. Higher requirements are not conducive to industrial applications
[0009] (1) The specific surfac

Method used

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  • Multi-metal body catalyst for ultra-deep desulphurization and denitrogenation as well as hydrofining and preparation method thereof
  • Multi-metal body catalyst for ultra-deep desulphurization and denitrogenation as well as hydrofining and preparation method thereof
  • Multi-metal body catalyst for ultra-deep desulphurization and denitrogenation as well as hydrofining and preparation method thereof

Examples

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Embodiment 1

[0047] The present embodiment illustrates the preparation of the NiTiMoW bulk catalyst in the present invention:

[0048] a) Weigh 25.0g of nickel acetate (containing Ni 2+ 0.10mol), it was dissolved in 150ml of water to form a solution, and heated to the reaction temperature, then slowly dropwise added 0.2mol / L Na 2 CO 3 Aqueous solution, adjusted to pH = 11 to form a green mixed reaction solution, reflux reaction at a reaction temperature of 80°C for 20 hours; then slowly add 0.06ml of isopropyl titanate (containing Ti 4+ 0.0002mol), and reflux reaction at a reaction temperature of 80°C for 10 hours to obtain a green product; the green product obtained by the reaction was filtered and washed to obtain a catalyst precursor; the catalyst precursor was added to 250ml of water for beating and configured into a slurry precursor (a);

[0049] b) Weigh 4.9g of ammonium molybdate (containing Mo 6+ 0.025mol) and ammonium metatungstate 6.8g (containing W 6+ 0.025mol), it is disso...

Embodiment 2

[0052] The present embodiment illustrates the preparation of the NiTiMoW bulk catalyst in the present invention:

[0053] In addition to using isopropyl titanate 0.14ml (containing Ti 4+ 0.0005mol) to replace the isopropyl titanate 0.06ml (containing Ti 4+ 0.0002mol), the multimetallic bulk catalyst was prepared in the same manner as described in Example 1. The catalyst synthesized in this embodiment is brown powdered NiTiMoW catalyst, represented by Cat-B. As determined by low-temperature nitrogen adsorption, the specific surface area of ​​the catalyst is 194m 2 / g, the pore volume is 0.22ml / g.

Embodiment 3

[0055] The present embodiment illustrates the preparation of the NiTiMoW bulk catalyst in the present invention:

[0056] In addition to using isopropyl titanate 0.29ml (containing Ti 4+ 0.0010mol) to replace the isopropyl titanate 0.06ml (containing Ti 4+ 0.0002mol), the multimetallic bulk catalyst was prepared in the same manner as described in Example 1. The catalyst synthesized in this example is brown powdered NiTiMoW catalyst, represented by Cat-C. As determined by low-temperature nitrogen adsorption, the specific surface area of ​​the catalyst is 192m 2 / g, the pore volume is 0.22ml / g.

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Abstract

The invention relates to a multi-metal body catalyst for ultra-deep desulphurization and denitrogenation as well as hydrofining and a preparation method thereof. The multi-metal body catalyst is a mixed metal oxide which comprises VIII group metal, IVB group metal and two VIB metals; wherein the catalyst is calculated according to oxides and the catalyst is used as a reference, and the catalyst comprises 1-60 wt.% of VIII group metal, 1-50 wt.% of IVB group metal, and 5-60 wt.% of VIB metal. The invention also discloses a preparation method and an application of the catalyst. The catalyst is applied to a hydrofining reaction of fuel oil containing sulfur and nitrogen; the reaction condition is as follows: the temperature is 280-400 DEG C, the hydrogen pressure is 1-20 MPa, the volume ratio between hydrogen and the fuel oil containing sulfur and nitrogen is 50-1000, and the volume space velocity of the material is 0.1-10h<-1>; the catalyst can be used for respectively eliminating sulfur and nitrogen in diesel oil fractions from 500ppm to 10ppm in the reaction, and ultra-deep hydrodesulfurization and ultra-deep hydrodenitrogenation of diesel oil is realized.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a hydrorefining multi-metal body catalyst for ultra-deep desulfurization and denitrification, a preparation method thereof and an application in ultra-deep hydrodesulfurization and hydrodenitrogenation reactions of diesel oil. Background technique [0002] At present, due to the decline of the world's oil reserves, the problem of heavy and inferior oil is becoming more and more serious, and the environmental legislation of various countries in the world has increasingly stringent restrictions on the sulfur content of fuel oil and the emission of nitrogen oxides from vehicle exhaust. Therefore, the development of The ultra-deep hydrodesulfurization and denitrification catalyst with higher performance has received more and more attention in the petrochemical industry. The nitrogen-containing compounds and sulfur-containing compounds in fuel oil are the main culprit...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J35/10C10G45/08
Inventor 李灿蒋宗轩刘欣毅刘铁峰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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