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Hydrocracking catalyst and preparation method thereof, and hydrocracking reaction method

A hydrocracking and catalyst technology, which is applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as easy carbon deposition and deactivation

Active Publication Date: 2016-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of easy carbon deposition and deactivation when using the existing hydrocracking catalyst to hydrocrack hydrocarbon oil rich in aromatics to produce high value-added chemical material BTX or high-octane gasoline, and provide A hydrocracking catalyst that is not only difficult to deposit carbon, but also capable of obtaining hydrocracking products with relatively high aromatics content, a preparation method of the hydrocracking catalyst, and a method of using the hydrocracking catalyst to carry out hydrocracking reactions method

Method used

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  • Hydrocracking catalyst and preparation method thereof, and hydrocracking reaction method

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specific Embodiment approach

[0025] According to a specific embodiment of the present invention, the Mo-Beta type zeolite molecular sieve is prepared according to the following method:

[0026] (1) Mixing Beta-type zeolite molecular sieve with Mo-containing compound to obtain a mixture of Beta-type zeolite molecular sieve and Mo-containing compound;

[0027] (2) Roasting the mixture obtained in step (1) in an atmosphere of water vapor to obtain Mo-Beta type zeolite molecular sieve;

[0028] Wherein, based on the Mo-Beta type zeolite molecular sieve on a dry basis, the amount of each component in the step (1) is such that the molybdenum content in the final Mo-Beta type zeolite molecular sieve is preferably 0.5 -10% by weight, more preferably, the content of molybdenum in terms of oxide is 1-6% by weight; the molybdenum-containing compound is preferably selected from molybdenum oxides, chlorides, or molybdates. The roasting conditions in the step (2) include: the temperature is 200-700°C, preferably 400-650°C; t...

Embodiment 1

[0055] This example is used to illustrate the hydrocracking catalyst provided by the present invention and its preparation method.

[0056] Combine 175.7 grams of pseudo-boehmite with a dry basis of 70% (Catalyst Changling Branch) and 95.06 grams of β-zeolite molecular sieve with a dry basis of 81% (Product of the Catalyst Changling Branch, with a silicon-aluminum molar ratio of 25) The mixture was uniformly mixed and extruded into a three-lobed strip with a circumscribed circle diameter of 1.6 mm on an extruder, then dried at 120°C for 3 hours, and then calcined at 600°C for 4 hours to obtain a catalyst carrier Z1, whose composition is shown in Table 1.

[0057] Use 100 g of the above carrier Z1 with 75 ml of ammonia solution containing ammonium molybdate, cobalt nitrate and nickel nitrate (converted to the corresponding oxides containing 109.9 g / L MoO 3 , 14.7 g / L CoO, 0.73 g / L NiO) was impregnated for 1 hour, and then the impregnated support was dried at 120°C for 2 hours, and th...

Embodiment 2

[0065] This example is used to illustrate the hydrocracking catalyst provided by the present invention and its preparation method.

[0066] Combine 120 grams of pseudo-boehmite with a dry basis of 70% (Catalyst Changling Branch) and 145 grams of zeolite β molecular sieve with a dry basis of 80% (Product of the Catalyst Changling Branch, the molar ratio of silicon to aluminum is 24.5) The mixture was uniformly mixed and extruded into a trilobal strip with a circumscribed circle diameter of 1.6 mm on an extruder, then dried at 120°C for 3 hours, and then calcined at 580°C for 3 hours to obtain a catalyst carrier Z2. The composition is shown in Table 1.

[0067] Take 100 g of the above carrier Z2 with 85 ml of ammonia solution containing ammonium molybdate, cobalt nitrate and nickel nitrate (converted into corresponding oxides containing 156 g / L MoO 3 , 34 g / L CoO, 5.7 g / L NiO) was impregnated for 1 hour, and then the impregnated support was dried at 120°C for 2 hours, and then calcine...

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Abstract

The present invention provides a hydrocracking catalyst and a preparation method thereof, and a hydrocracking reaction method. The hydrocracking catalyst comprises a carrier and active components loaded on the carrier, wherein the active components comprise (calculated as the oxide), by weight, 5-20% of molybdenum, 0.5-4% of cobalt, and 0.1-1.5% of nickel, a molar ratio of the cobalt atom to the nickel atom in the active components is 1-8:1, the carrier contains a solid acid component and an inorganic heat-resistant oxide, and the solid acid component is a beta zeolite molecular sieve or a mixture of a beta zeolite molecular sieve and amorphous silicon-aluminum. According to the present invention, the hydrocracking catalyst has carbon deposition resistance, can obtain the high aromatic hydrocarbon content hydrocracking product, and has a certain industrial application prospect.

Description

Technical field [0001] The invention relates to a hydrocracking catalyst, a preparation method of the hydrocracking catalyst, and a method for carrying out a hydrocracking reaction using the hydrocracking catalyst. Background technique [0002] With the intensification of crude oil quality and deterioration, the quality of secondary processed diesel fractions such as catalytic cracking diesel and coking diesel is getting worse, which is manifested in high density, high nitrogen content, high aromatic content, and low cetane number etc. Therefore, the hydro-upgrading of these secondary processed diesel fractions rich in aromatic hydrocarbons has received widespread attention. Converting these inferior diesels into high value-added chemical materials BTX or high-octane gasoline components is one of the effective technical ways to reprocess diesel. At present, there are many reports on the hydro-upgrading catalyst as the core technology of this route. [0003] For example, US5,219,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/78C10G47/20
Inventor 辛靖杨平毛以朝李明丰蒋东红胡志海聂红
Owner CHINA PETROLEUM & CHEM CORP
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