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Preparation method of hydrogenation catalyst composition

A technology of hydrogenation catalyst and composition, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., which can solve problems such as difficulty in forming bulk catalysts and achieve bonding Reinforcement, large pore volume, and uniform grain size

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a hydrogenation catalyst composition, especially a clean preparation method, while solving the problem of difficulty in forming a bulk catalyst, and the catalyst has a large specific surface area and uniform pore distribution, etc. Good physical and chemical properties, large pore volume is conducive to the entry and exit of large hydrocarbon molecules, can process heavier raw materials, and can be used in hydrodesulfurization and hydrodenitrogenation reactions, especially for ultra-deep desulfurization in the production of ultra-clean diesel reacting

Method used

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  • Preparation method of hydrogenation catalyst composition
  • Preparation method of hydrogenation catalyst composition
  • Preparation method of hydrogenation catalyst composition

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Add 500mL of water to the dissolving tank 1, add 40g of nickel chloride and 46g of ammonium metatungstate respectively to dissolve, prepare an acidic working solution A, add 500mL of water to the dissolving tank 2, then add 30 grams of sodium metaaluminate to dissolve, and prepare an alkali. Sex Work Solution B. 350 mL of water was added to the reaction tank, and the temperature was raised to 45°C. With stirring, mix solution A, solution B and CO 2 Add cocurrent into the reaction tank to form gel, CO 2 The concentration is 40v%, the gel-forming temperature is 45°C, the gel-forming time is 1 hour, and the pH value of the gel-forming slurry is 8.5. Add CO during the gelation process 2 Total amount of gas and Al in alkaline working solution B 2 O 3 The molar ratio was 3.5. Aging for 2 hours after gel formation. Then filter, add 600ml of purified water and 12.4g of molybdenum trioxide to the filter cake, beat and stir evenly, filter, dry the filter cake at 80 °C for ...

Embodiment 2

[0031] According to the method of Example 1, add nickel chloride, ammonium metatungstate and zirconium oxychloride to the dissolving tank 1 according to the component content ratio of the catalyst B in Table 1 to prepare the acidic working solution A, then add the dissolving tank 1 to the solution A. 2 Add sodium metaaluminate alkaline working solution B. 350 mL of water was added to the reaction tank, and the temperature was raised to 40°C. With stirring, mix solution A, solution B and CO 2 Add cocurrent into the reaction tank to form gel, CO 2 The concentration is 45v%, the gel-forming temperature is 40°C, the gel-forming time is 1.5 hours, and the pH value of the gel-forming slurry is 7.5. Add CO during the gelation process 2 Total amount of gas and Al in alkaline working solution B 2 O 3 The molar ratio was 4.0. Aging for 1.5 hours after gel formation. Then filter, add 500ml of purified water and 10.3g of molybdenum trioxide to the filter cake, beat and stir evenly,...

Embodiment 3

[0033] According to the method of embodiment 1, according to the component content ratio of catalyst C in table 1, in dissolving tank 1, add nickel chloride, ammonium metatungstate and phosphoric acid to prepare acid working solution A, then add in dissolving tank 2 Sodium metaaluminate alkaline working solution B. 350 mL of water was added to the reaction tank, and the temperature was raised to 50°C. With stirring, mix solution A, solution B and CO 2 Add cocurrent into the reaction tank to form gel, CO 2 The concentration is 35v%, the gel-forming temperature is 50°C, the gel-forming time is 1.5 hours, and the pH value of the gel-forming slurry is 8.0. Add CO during the gelation process 2 Total amount of gas and Al in alkaline working solution B 2 O 3 The molar ratio was 3.0. Aging for 2.0 hours after gel formation. Then filter, add 500ml of purified water and 11.2g of molybdenum trioxide to the filter cake, beat and stir evenly, and filter the filter cake. After calci...

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Abstract

The invention discloses a preparation method of a hydrogenation catalyst composition. According to the method, sodium meta-aluminate is adopted as an aluminum source in the preparation of a mixture of an NixWyOz composite oxide precursor and an Al2O3 precursor through a coprecipitation process, and a proper amount of a CO2 gas is accessed in the colloid forming process, so a difficult shaping problem of a bulk phase catalyst is solved, physicochemical properties of the catalyst are adjusted, and the composition which has the characteristics of large specific surface area and uniform aperture distribution and makes many metal active sites be exposed on the catalyst surface allows the utilization rate of active metals to be improved. The catalyst composition of the invention, which has increased apertures and pore volumes, allows the Ni-W high activity sites to be fully utilized and complex macrostructure molecules to easily contact with the active sites, so the catalyst composition is especially suitable for ultra-deep desulfurization reactions for the production of ultraclean diesel oil.

Description

technical field [0001] The invention relates to a hydrogenation catalyst composition and a preparation method thereof, in particular to a preparation method of a catalyst used in the process of super-deep hydrodesulfurization, denitrification and other removal of impurities of hydrocarbons. Background technique [0002] While the quality of raw oil is further deteriorated worldwide, fuel oil specifications are more stringent on the indicators of transportation fuels. In the past decade, many countries including North America, Europe, and Japan have proposed the concept of ultra-low sulfur diesel (ULSD) and continue to The development of new fuel specifications to limit the content of sulfur, aromatics, etc. in motor gasoline and diesel makes refiners need to find new catalysts to meet product needs while ensuring profitability. [0003] Petroleum fractions contain a variety of sulfur-containing compounds with different structures and molecular weights, including mercaptans, ...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J27/19B01J35/02B01J37/03
Inventor 王海涛刘东香徐学军冯小萍王继锋
Owner CHINA PETROLEUM & CHEM CORP
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