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A kind of preparation method of hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum

A hydrogenation catalyst, amorphous silica-alumina technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of amorphous silica-alumina agglomeration, catalyst specific surface area and pore volume reduction, active metal distribution It is not easy to control and other problems to achieve the effect of avoiding reunion and enhancing binding force

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the carrier material is prepared by directly adding molecular sieves in the process of forming amorphous silica-alumina. In this way, amorphous silica-alumina is prone to agglomeration, and it is also easy to enter the pores of the other party or block the pores of molecular sieves, which affects the amorphous silica-alumina. The distribution on the molecular sieve, the poor connectivity between the molecular sieve and the amorphous silica-alumina channel, reduces the specific surface area and pore volume of the catalyst, and the distribution of active metals is not easy to control, which makes the hydrogenation function of the catalyst mismatch with the cracking function, affecting the catalyst performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 986g of solid aluminum chloride into 1.5 liters of distilled water while heating and stirring until dissolved to obtain aluminum chloride solution (a). Add an appropriate amount of distilled water to the concentrated ammonia water and dilute it into about 10% dilute ammonia water (b), and dissolve 150.8g of xylitol in 500ml of water to form a solution (c). Take 10L of water glass (industrial grade, modulus 3.0) and dilute it in 20L of deionized water to prepare solution (d). 98gY-type molecular sieve Y-1 (SiO 2 / Al 2 o 3 The molar ratio is 11.0, the unit cell constant is 24.42?, and the relative crystallinity is 95%). Use an impregnation solution containing 48g sodium tungstate and 42g nickel nitrate hexahydrate for saturated impregnation, dry at 120°C for 180 minutes after impregnation, and bake at 500°C 4 hours; 38.2 g of diethanolamine was dissolved in 100 ml of water, heated to 60° C., metal-containing Y molecular sieve was added under stirring, and beaten fo...

Embodiment 2

[0044] 816g of solid aluminum sulfate was added to 1.5 liters of distilled water while heating and stirring until dissolved to obtain aluminum sulfate solution (a). Dilute the concentrated ammonia water into about 10wt% dilute ammonia water (b) by adding an appropriate amount of distilled water, and dissolve 243g of adipic acid in 500ml of water to form a solution (c). Take 10L of water glass (industrial grade, modulus 3.0) and dilute it in 20L of deionized water to prepare solution (d). 594gY-type molecular sieve Y-1 (SiO 2 / Al 2 o 3The molar ratio is 11.0, the unit cell constant is 24.42?, and the relative crystallinity is 95%) is impregnated with an impregnation solution containing 630g of sodium tungstate and 555g of nickel nitrate hexahydrate, dried at 120°C for 180 minutes after impregnation, and calcined at 500°C for 4 Hours; 118g of ethanolamine was dissolved in 100ml of water, heated to 60°C, and metal-containing molecular sieves were added under stirring, and beat...

Embodiment 3

[0047] 185g of solid aluminum sulfate was added to 1.5 liters of distilled water while heating and stirring until dissolved to obtain aluminum sulfate solution (a). Prepare the solid sodium metaaluminate to a concentration of 20gAl 2 o 3 / l sodium aluminate solution (b). 131.9 g of 1,4-butanedioic acid was dissolved in 1 L of water to form solution (c). 57.2gY-type molecular sieve Y-1 (SiO 2 / Al 2 o 3 The molar ratio is 11.0, the unit cell constant is 24.42?, and the relative crystallinity is 95%) using an impregnating solution containing 80.2g sodium tungstate and 70.7g nickel nitrate hexahydrate for saturated impregnation, after impregnation, dry at 120°C for 180 minutes, 500 Roast for 4 hours at °C; dissolve 5.7g of ethylenediamine in 500ml of water, heat to 60°C, add metal-containing molecular sieves under stirring, and continue stirring for 2 hours to obtain slurry (d). Take 10L water glass (industrial grade, modulus 3.0) and dilute it in 20L deionized water to prep...

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Abstract

The invention discloses a method for hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum. The method includes: adding a mixture of molecular sieves containing hydrogenation active metal components and organic amines, organic alcohols and / or organic acids during the gelation of amorphous silica-alumina, and aging after the gelation of amorphous silica-alumina is completed. , followed by hydrothermal treatment, filtration, washing, drying, molding, drying and roasting to obtain a hydrogenation catalyst. The method of the invention can organically combine the molecular sieve and the amorphous silica-alumina, has a good degree of combination and dispersion, can avoid agglomeration or even blockage between the molecular sieve and the amorphous silica-alumina, and can effectively adjust the hydrogenation function of the catalyst With cracking function, improve the performance of the catalyst. The catalyst prepared by the method of the invention is suitable for shallow cracking and deep hydrogenation processes.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst, in particular to a method for preparing a hydrogenation catalyst containing molecular sieves and amorphous silicon-alumina. Background technique [0002] Hydrocracking technology is one of the important means for the secondary processing of crude oil and the lightening of heavy oil. Because of its strong adaptability to raw materials, flexible production operations and product solutions, and good product quality, it has become an important way to produce high-quality light clean oil products and solve the source of chemical raw materials. [0003] Hydrocracking catalysts are generally dual-functional catalysts, and their cracking activity and hydrogenation activity are respectively provided by the acidic component and hydrogenation active component in the catalyst. [0004] The acidic component of the catalyst is generally provided by molecular sieves contained in the catalyst a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16B01J29/78C10G47/20
Inventor 蒋广安郑庆华刘雪玲李宝忠张晔王继锋
Owner CHINA PETROLEUM & CHEM CORP
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