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Hydrocracking catalyst and its preparation method and application

A hydrocracking and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems that cannot meet actual needs and product quality is not high

Active Publication Date: 2021-03-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the two methods, since the water vapor pressure increases sharply with the increase of temperature, in order to make the existing equipment can withstand the reaction pressure requirements, an open system is usually used, which makes the powder continuously increase with the water vapor during the hydrothermal process. Taken out of the system, the reaction system is in an unsteady state operation, so that the product quality is not high. Although the obtained molecular sieve has certain ring-opening activity, it still cannot meet the actual demand.

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  • Hydrocracking catalyst and its preparation method and application
  • Hydrocracking catalyst and its preparation method and application
  • Hydrocracking catalyst and its preparation method and application

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preparation example Construction

[0063] The preparation method of the carrier is well known to those skilled in the art, and the present disclosure has no special limitation. For example, the method may further include: mixing phosphorus-containing Y-type molecular sieves, heat-resistant inorganic oxides, solvents and optional additives, and then molding and drying to obtain the carrier. The forming method can adopt various conventional methods, such as tablet forming, rolling ball forming or extrusion forming and the like. The solvent is a common solvent in the catalyst molding process. When the method of extrusion molding is adopted, it is preferable to add an appropriate amount of additives to facilitate molding.

[0064] Optionally, the preparation method of the carrier includes: mixing phosphorus-containing Y-type molecular sieves, heat-resistant inorganic oxides, peptizers, and optional lubricants, and then forming, drying, and calcining to obtain the carrier. The peptizer can be an acid-containing so...

preparation Embodiment 1

[0086] Get NaY molecular sieve (produced by Sinopec Catalyst Changling Branch Company, trade name NaY, unit cell constant is 2.468nm, specific surface area is 680m 2 / g, the pore volume is 0.30ml / g, Na 2 O content is 13.0 wt%, Al 2 o 3 content is 22% by weight) 300g, add 2.0mol / L of (NH 4 ) 2 HPO 4 Aqueous solution, beating, the total amount of water used is 1000ml, filter, repeat the above process for the obtained filter cake three times, and then dry at 100°C for 1 hour to obtain the phosphorus-containing molecular sieve raw material, and the unit cell constant of the phosphorus-containing molecular sieve raw material is measured to be 2.468nm , the specific surface area is 590m 2 / g, the pore volume is 0.37ml / g, P 2 o 5 The content is 4.8% by weight, Na 2 The O content is 3.5% by weight.

[0087] Take 100 g of the above-mentioned phosphorus-containing molecular sieve raw material and put it into a hydrothermal treatment device, feed 100% water vapor, raise the temp...

preparation Embodiment 2

[0091] Take PSRY molecular sieve (Sinopec Catalyst Changling Branch, produced by the company, trade name PSRY, unit cell constant is 2.456nm, specific surface area is 620m 2 / g, the pore volume is 0.39ml / g, Na 2 O content is 2.2% by weight, P 2 o 5 The content is 1.5% by weight, Al 2 o 3 The content is 18% by weight) 300g, add deionized water for beating, the total amount of water is 1000ml, filter, and dry at 70°C for 2h to obtain a phosphorus-containing molecular sieve raw material with a water content of 35% by weight.

[0092] The above-mentioned phosphorus-containing molecular sieve raw material is crushed, sieved into 5-20 meshes (wherein 1mm~500mm particles account for 70% by weight of the total weight of the phosphorus-containing molecular sieve raw material), put into a hydrothermal treatment device, feed 100% steam, and heat up to 580°C, the internal pressure of the control device is 0.4MPa, constant hydrothermal treatment for 2 hours, and then the molecular siev...

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Abstract

The disclosure relates to a hydrocracking catalyst and its preparation method and application. Based on the dry basis weight of the catalyst, the catalyst includes 45 to 90 wt. 40% by weight of the first metal component, and 1 to 15% by weight of the second metal component in terms of metal oxide; the carrier includes the first Y-type molecular sieve, the second Y-type molecular sieve and heat-resistant inorganic oxide , the weight ratio of the first Y-type molecular sieve, the second Y-type molecular sieve and the heat-resistant inorganic oxide is 1: (0.05-20): (0.1-97); the first metal is selected from group VIB Metal; the second metal component is a metal selected from group VIII; the first Y-type molecular sieve is a phosphorus-containing Y-type molecular sieve, and the phosphorus content of the phosphorus-containing Y-type molecular sieve is 0.3- 5% by weight, the pore volume is 0.2-0.95mL / g, and the ratio of pyridine infrared B acid to L acid is 2-10. The catalyst has high hydrocracking reaction activity.

Description

technical field [0001] The present disclosure relates to a hydrocracking catalyst and its preparation method and application. Background technique [0002] Industrial hydrocracking feedstocks include VGO and other 350-540°C fractions, which contain a large amount of polycyclic aromatic hydrocarbons and naphthenes. Studies have shown that in the high conversion rate region of hydrocracking, the content of aromatics in heavy fractions decreases, while the content of naphthenes is higher , which makes the open-loop performance an effective means to improve the quality of tail oil and increase the smoke point of aviation fuel. However, because the β bond in the cycloalkane is in the vertical direction of the empty p orbital of the cycloalkane carbanion, the two are not easy to form a coplanar conformation, which makes the ring opening of the cycloalkane require stronger acidity. Molecular sieves have high acidity and are widely used in hydrocracking reactions. However, the str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16B01J29/83C10G47/20
Inventor 毛以朝李明丰张润强赵阳赵广乐
Owner CHINA PETROLEUM & CHEM CORP