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Hydrocracking catalyst and preparation method thereof, and hydrocracking reaction method

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: 2016-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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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 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 MoY type zeolite molecular sieve is prepared according to a method comprising the following steps:

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

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

[0028] Wherein, the MoY 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 MoY type zeolite molecular sieve, the molybdenum content in terms of oxides is preferably 0.5-10% by weight , more preferably the molybdenum content in terms of oxide is 2-8% by weight. The molybdenum-containing compound is preferably selected from molybdenum oxides, chlorides or molybdates. The roasting conditions in the step (2) include...

Embodiment 1

[0056] This example is used to illustrate the hydrocracking catalyst provided by the present invention and its preparation method.

[0057] 78.0 grams of dry basis is 70% pseudo-boehmite (Catalyst Changling Branch), 131.6 grams of dry basis is 76% HY type zeolite (Catalyst Changling Branch, unit cell constant is 24.62 Angstroms) and 36.6 The gram-dry basis is 82% ZSM-5 (silicon-aluminum ratio is 60:1) mixes evenly, extrudes on the extruder and is extruded into the trilobate bar shape that circumscribed circle diameter is 1.6 millimeters, is then dried at 120 ℃ for 3 hours, and then Calcined at 600° C. for 4 hours to obtain catalyst carrier Z1, whose composition is shown in Table 1.

[0058] 100 grams of the above carrier Z1 were mixed with 82 milliliters of ammonia solution containing ammonium molybdate, cobalt nitrate and nickel nitrate (converted into corresponding oxides containing 121.3 grams per liter of MoO 3 , 16.2 g / L CoO, 5.4 g / L NiO) impregnated for 1 hour, then dri...

Embodiment 2

[0066] This example is used to illustrate the hydrocracking catalyst provided by the present invention and its preparation method.

[0067] With 46.3 grams of dry basis is 70% pseudo-boehmite (Catalyst Changling branch), 191.7 grams of dry basis is 75% HY zeolite (catalyst Changling branch, unit cell constant is 24.59 Angstroms) and 29.8 grams The dry basis is 80% MCM-22 (silicon-aluminum molar ratio is 30:1) mixed evenly, extruded on extruder into a three-leaf strip shape with a circumscribed circle diameter of 1.6 mm, then dried at 120 ° C for 3 hours, and then Calcined at 580° C. for 3 hours to obtain catalyst carrier Z2, whose composition is shown in Table 1.

[0068] 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 169.1 grams per liter of MoO 3 , 50.7 g / L CoO, 12.7 g / L NiO) impregnated for 1 hour, the...

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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 three components such as molybdenum, cobalt and nickel, the molybdenum content is 3-20 wt%, the cobalt content is 0.5-5 wt% and the nickel content is 0.1-1.5 wt% by adopting the total weight of the hydrocracking catalyst as the reference (calculated as the oxide), a molar ratio of cobalt atoms to nickel atoms in the active components is 1-10:1, the carrier contains a solid acid component and an inorganic heat-resistant oxide, and the solid acid component comprises at least two components selected from amorphous silicon-aluminum, a macroporous zeolite molecular sieve and a mesoporous zeolite molecular sieve. The hydrocracking catalyst of the present invention does not easily produce carbon deposition, can obtain the hydrocracking product having the high aromatic hydrocarbon content, and has great industrial application prospects.

Description

technical field [0001] The invention relates to a hydrocracking catalyst, a preparation method of the hydrocracking catalyst and a method for using the hydrocracking catalyst to carry out hydrocracking reaction. 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 deteriorating, 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, US...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/20
Inventor 辛靖杨平张毓莹李明丰胡志海聂红
Owner CHINA PETROLEUM & CHEM CORP
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