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Bulk phase catalyst and preparation method thereof, and hydrogenation catalyst containing bulk phase catalyst

A bulk catalyst, hydrogenation reaction technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as pollution of the environment, achieve high specific surface area, and improve catalytic activity.

Active Publication Date: 2020-04-10
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The main purpose of the present invention is to provide a bulk catalyst and its preparation method, hydrogenation catalyst containing it, to overcome the existing hydrodesulfurization bulk phase The catalyst preparation process pollutes the environment, and the defects such as the activity of the prepared bulk catalyst

Method used

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  • Bulk phase catalyst and preparation method thereof, and hydrogenation catalyst containing bulk phase catalyst
  • Bulk phase catalyst and preparation method thereof, and hydrogenation catalyst containing bulk phase catalyst
  • Bulk phase catalyst and preparation method thereof, and hydrogenation catalyst containing bulk phase catalyst

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preparation example Construction

[0035] The invention provides a kind of preparation method of bulk catalyst, and this preparation method comprises the steps:

[0036]Step 1, preparing a mixed liquid from a compound containing Group VIII elements and a compound containing Group VIB elements, adjusting the pH of the mixed liquid to 6-11, and then adding a surfactant;

[0037] Step 2, placing the mixed solution obtained in step 1 after adding the surfactant in an airtight container for reaction, the reaction time is at least 10 minutes, and the reaction temperature is 5-75°C; and

[0038] Step 3, heating the mixed solution to 80-200° C. for reaction, the reaction time is at least 1 hour, filtering and drying to obtain the bulk catalyst.

[0039] Wherein, in step 1, the compound containing Group VIII elements is preferably a compound containing cobalt and / or nickel, more preferably a compound containing nickel; the compound containing Group VIB elements is preferably a compound containing molybdenum and / or tungs...

Embodiment 1

[0052] Weigh 15.51g of nickel nitrate, 9.42g of ammonium heptamolybdate, and 7.19g of ammonium metatungstate, and add them into 160g of water to prepare a reaction solution. In the solution, ammonia water with a mass concentration of 25% was added dropwise until the pH value of the mixed solution was 9, and then 1.0 g of Tween-80 was added. The system was placed in a closed reactor, reacted at 35°C for 2 hours, then heated up to 150°C, reacted for 2 hours, then cooled, filtered, washed with water, and the filter cake was dried at 120°C for 4 hours. A bulk catalyst is obtained.

[0053] In this example, during the reaction of the system at 35°C, bulk catalyst seeds are gradually formed, and the XRD pattern of the seeds is shown in figure 1 As shown, the mixture was gradually precipitated from a transparent solution state, and the solution became cloudy, which also indicated that there was a chemical reaction in this process. According to the XRD characterization results, it c...

Embodiment 2

[0056] Weigh 12.03g of basic nickel carbonate, 0.57g of basic cobalt carbonate, 2.35g of ammonium heptamolybdate, and 3.32g of tungstic acid, and add them into 160g of water to prepare a suspension. In the suspension, dilute nitric acid with a mass concentration of 15% was added dropwise until the pH of the mixture was 7, and then 0.8 g of polyethylene glycol-400 and 0.4 g of polyethylene glycol-1000 were added. The system was placed in a closed reactor, reacted at 45°C for 3 hours, then heated to 120°C, reacted for 8 hours, then cooled, filtered, washed with water, and the filter cake was dried at 120°C for 4 hours. A bulk catalyst is obtained.

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Abstract

The invention discloses a bulk phase catalyst and a preparation method thereof, and a hydrogenation catalyst containing the bulk phase catalyst. The preparation method comprises the following steps: 1, preparing a mixed solution from a compound containing a group VIII element and a compound containing a group VIB element, adjusting the pH value of the mixed solution to 6-11, and then adding a surfactant; 2, putting the mixed solution added with the surfactant obtained in the step 1 into a closed container, and carrying out a reaction for at least 10 minutes at a reaction temperature of 5-75 DEG C; and 3, heating the mixed solution to 80-200 DEG C, carrying out a reaction for at least 1 hour, filtering, and drying to obtain the bulk phase catalyst. According to the invention, a seed crystalgeneration reaction is introduced in the preparation process of the catalyst, and the surfactant is added, so that the catalyst provided by the invention has high hydrogenation activity due to the introduction of the process.

Description

technical field [0001] The invention belongs to the field of ultra-deep hydrodesulfurization, and in particular relates to a bulk catalyst, a preparation method thereof, and a hydrogenation catalyst containing the bulk catalyst. Background technique [0002] With the advancement of the National V diesel standard, the S content in diesel needs to be further reduced to below 10ppm. Song et al. have done a study on the relationship between the sulfur content in diesel samples and the catalyst bed during hydrodesulfurization. According to their research results, it can be deduced that when the national III diesel oil (S content is not higher than 350ppm) or the national IV diesel oil (S content is not higher than 50ppm) is upgraded to the national V diesel oil, the catalyst performance The bed volume needs to be increased to 2.59 times or 1.39 times of the original, which will significantly increase the equipment investment of the refinery. In order to save equipment investmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10B01J37/00B01J37/03C10G45/08
CPCB01J27/24B01J27/19B01J37/0018B01J37/03C10G45/08C10G2300/202C10G2400/04B01J35/613B01J35/633B01J35/647
Inventor 赵秦峰李荣观葛少辉侯远东吴璇鲁旭王书芹兰玲孙欣婵
Owner PETROCHINA CO LTD
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