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Method for preparing hydrocarbon hydrogenation catalyst

A technology of hydrogenation catalysts and oxides, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve the problem of amorphous silica-alumina agglomeration, affecting catalyst performance, poor connectivity between molecular sieves and amorphous silica-alumina channels and other issues to achieve the effect of improving performance

Active Publication Date: 2015-11-18
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 100 g of solid aluminum chloride and 5 g of nickel nitrate hexahydrate into 2 liters of distilled water, while heating and stirring until dissolved to obtain solution (a). Concentrated ammonia water is added appropriate amount of distilled water and is diluted into about 10wt% dilute ammonia water (b), 12.5gY 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%) is saturated impregnated with an impregnating solution containing 5.5g of sodium tungstate, dried at 120°C for 180 minutes after impregnated, and calcined at 500°C for 4 hours; 4.8g Hexadecylamine was dissolved in 120ml of absolute ethanol, and metal-modified Y molecular sieves were added therein under stirring 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). Take a plastic tank, add (a) into the tank, stir and heat to 65°C, o...

Embodiment 2

[0044] Add 125g of solid aluminum sulfate and 43g of nickel nitrate hexahydrate into 2 liters of distilled water while heating and stirring until dissolved to obtain solution (a). Concentrated ammonia water is added appropriate amount of distilled water and is diluted into about 10wt% dilute ammonia water (b), 12.1gY 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 48.5g sodium tungstate for saturated impregnation, after impregnation, dry at 120°C for 180 minutes, and bake at 500°C for 4 hours; 2.4g Octadecylamine was dissolved in 200ml of absolute ethanol, and metal-modified Y molecular sieves were added to form a slurry (c) by beating. Take 10L of water glass (industrial grade, modulus 3.0) and dilute it in 20L of deionized water to prepare solution (d). Take a plastic tank, add (a) into the tank, stir and heat to 65°C, open the valve of the c...

Embodiment 3

[0047] Add 125g of solid aluminum sulfate and 126.5g of nickel nitrate hexahydrate into 2 liters of distilled water while heating and stirring until dissolved to obtain solution (a). Prepare the solid sodium metaaluminate to a concentration of 20gAl 2 o 3 / l sodium aluminate solution (b), 447gY 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 143.5g sodium tungstate for saturated impregnation, after impregnation, dry at 120°C for 180 minutes, and bake at 500°C for 4 hours; 44.7g Dodecylamine was dissolved in 2.5L of absolute ethanol, and metal-modified Y molecular sieves were added thereto for beating to obtain slurry (c). Take 10L of water glass (industrial grade, modulus 3.0) and dilute it in 20L of deionized water to prepare solution (d). Take a glue tank, put 2l of deionized water into it, stir and heat it to 65°C, open the valves of the c...

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Abstract

The invention discloses a method for preparing a hydrocarbon hydrogenation catalyst. The method comprises the following steps: adding a mixture of group VIII metal cation modified molecular sieves and organic amines before or in the process of preparing an amorphous silica-alumina-group VIB metal oxide composite oxide by a coprecipitation method; carrying out aging after gel forming is completed and then obtaining a catalyst intermediate through filtration, washing and drying; then carrying out forming, drying and roasting, thus obtaining the hydrogenation catalyst. The catalyst prepared by the method can organically combine the molecular sieves and amorphous silica-alumina together with good combination degree and dispersion degree, thereby avoiding agglomeration and even blockage of the molecular sieves and amorphous silica-alumina, simultaneously controlling the distribution of hydrogenation components on various acidic components effectively and improving the usability of the catalyst. The catalyst is especially suitable for the hydrocarbon hydro-upgrading process with moderate requirements for acidity and the hydrogenation function.

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 蒋广安李宝忠张晔郑庆华刘雪玲王继锋
Owner CHINA PETROLEUM & CHEM CORP