Hydrocracking catalyst and its preparation method and method for hydrocracking reaction

A hydrocracking and catalyst technology, 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: 2018-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 its preparation method and method for hydrocracking reaction

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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) Beta-type zeolite molecular sieves are mixed with Mo-containing compounds to obtain a mixture of Beta-type zeolite molecular sieves and Mo-containing compounds;

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

[0028] Wherein, the Mo-Beta type zeolite molecular sieve is based on the dry basis, and the consumption of each component in the step (1) is such that in the final Mo-Beta type zeolite molecular sieve, the molybdenum content in terms of oxides is preferably 0.5 -10% by weight, more preferably the content of molybdenum in terms of oxides 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: t...

Embodiment 1

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

[0056] The dry basis of 175.7 grams is 70% pseudo-boehmite (catalyst Changling branch company) and the dry basis of 95.06 grams is 81% beta zeolite molecular sieve (catalyst Changling branch company product, silicon-aluminum mol ratio is 25) Mix evenly, extrude into a three-leaf strip with a circumscribed circle diameter of 1.6 mm on an extruder, then dry at 120°C for 3 hours, and then roast at 600°C for 4 hours to obtain catalyst carrier Z1, whose composition is shown in Table 1.

[0057] 100 grams of the above carrier Z1 were mixed with 75 milliliters of ammonia solution containing ammonium molybdate, cobalt nitrate and nickel nitrate (converted into corresponding oxides containing 109.9 grams per liter of MoO 3 , 14.7 g / L CoO, 0.73 g / L NiO) impregnated for 1 hour, then dried the impregnated carrier at 120° C. for 2 hours, and then calcined at ...

Embodiment 2

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

[0066] The dry basis of 120 grams is 70% pseudo-boehmite (catalyst Changling branch company) and the dry basis of 145 grams is 80% beta zeolite molecular sieve (catalyst Changling branch company product, silicon-aluminum mol ratio is 24.5) Mix evenly, extrude into a three-leaf strip with a circumscribed circle diameter of 1.6 mm on an extruder, then dry at 120°C for 3 hours, and then roast at 580°C for 3 hours to obtain catalyst carrier Z2, whose composition is shown in Table 1.

[0067] 100 grams of the above-mentioned carrier Z2 were mixed with 85 milliliters of ammonia solution containing ammonium molybdate, cobalt nitrate and nickel nitrate respectively (converted into corresponding oxides containing 156 grams per liter of MoO 3 , 34 g / L CoO, 5.7 g / L NiO) impregnated for 1 hour, then dried the impregnated carrier at 120° C. for 2 hours, and t...

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Abstract

The invention provides a hydrocracking catalyst, a preparation method thereof and a hydrocracking reaction method. The hydrocracking catalyst includes a carrier and an active component loaded on the carrier, wherein the active component consists of three components of molybdenum, cobalt and nickel, calculated as oxides and based on the hydrocracking Based on the total weight of the catalyst, the content of the molybdenum is 5-20% by weight, the content of the cobalt is 0.5-4% by weight, the content of the nickel is 0.1-1.5% by weight, and in the active component The molar ratio of cobalt atoms to nickel atoms is 1‑8:1; the carrier contains solid acid components and inorganic heat-resistant oxides, and the solid acid components are zeolite beta molecular sieves or zeolite beta molecular sieves and amorphous silica-alumina mixture. The hydrocracking catalyst is not only difficult to deposit carbon, but also can obtain hydrocracking products with relatively high content of aromatic hydrocarbons, 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 hydrocracking reaction by using the hydrocracking catalyst. Background technique [0002] As crude oil becomes heavier and worse, the quality of secondary processed diesel fractions such as catalytic cracking diesel oil and coker diesel oil 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 aromatics has attracted more and more attention. Converting these low-quality diesel oils into high value-added chemicals BTX or high-octane gasoline components is one of the effective technical approaches for secondary processing of diesel oil. At present, there are many reports on hydrogenation upgrading catalysts as the core technology of this route. [0003] For example,...

Claims

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Application Information

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Patent Type & Authority Patents(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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