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Hydrocracking catalyst containing composite Beta molecular sieve as well as preparation method and application of hydrocracking catalyst

A hydrocracking and catalyst technology, applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as long-range order and short-range order of materials that are difficult to achieve

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although these methods can produce certain acidity, due to the presence of a large amount of non-skeleton hexa-coordinated aluminum in the obtained sample in order to maintain the stability of the matrix structure during the synthesis process, Make the material short-range order, it is difficult to achieve long-range order

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  • Hydrocracking catalyst containing composite Beta molecular sieve as well as preparation method and application of hydrocracking catalyst
  • Hydrocracking catalyst containing composite Beta molecular sieve as well as preparation method and application of hydrocracking catalyst
  • Hydrocracking catalyst containing composite Beta molecular sieve as well as preparation method and application of hydrocracking catalyst

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preparation example Construction

[0065] 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 also include: mixing high-silicon and phosphorus-containing molecular sieves, Beta molecular sieves, weakly acidic silica-alumina and alumina, 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.

[0066] The present disclosure has no special requirements on the shape of the carrier, which can be spherical, strip-shaped, hollow strip-shaped, spherical, block-shaped, etc., and the strip-shaped carrier can be multi-leaf clover-shaped, four-leaf clover-shaped, etc. deformed body.

[0067] According to the present disclosure, the first metal precursor is a soluble compound containing the first metal, including at least one of an inorganic acid of the first metal, an inorganic sa...

preparation Embodiment 1

[0082] Get RY molecular sieve (produced by Sinopec Catalyst Changling Branch Company, unit cell constant is 2.456nm, specific surface area is 672m 2 / g, the pore volume is 0.357mL / g, Na 2 O content is 1.44 wt%, P 2 o 5 The content is 1.37% by weight) 500g was put into a hydrothermal kettle, 100% steam was passed through, and the hydrothermal treatment was carried out at 560°C and 0.8MPa for 3 hours, and then the hydrothermally treated molecular sieve material was taken out.

[0083] Take 50 g (dry basis) of the molecular sieve material after hydrothermal treatment obtained above, add 500 mL of deionized water, stir and beat to obtain the first slurry, heat it up to 80 ° C, add 2.0 mol / L sulfuric acid solution, and detect the When the pH value of the first slurry was 2.8, the addition of acid was stopped, then the reaction was carried out at constant temperature for 4 hours, and filtered to obtain 40 g of the first solid product.

[0084] Add the first solid product above to...

preparation Embodiment 2

[0086] The molecular sieve with high silicon content was prepared according to the method of Preparation Example 1, with the difference that when adding the second acid solution, it was added at a rate of 15 mol / h. Molecular sieve Y-2 was prepared, and its XRD spectrum is shown in Figure 1. It can be seen that the diffraction angle position of the first strong peak is 6.1-6.8°, the diffraction angle position of the second strong peak is 10.2-10.7°, and the third strong peak The diffraction angle position of the peak is 15.8-16.5°, the diffraction angle position of the fourth strongest peak is 20.8-21.4°, and the diffraction angle position of the fifth strongest peak is 12.1-12.6°. Other properties are shown in Table 1.

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Abstract

The invention relates to a hydrocracking catalyst as well as a preparation method and application thereof. Based on the dry basis weight of the catalyst, the catalyst comprises 45-90 wt% of a carrierbased on the dry basis weight, 1-40 wt% of a first metal component based on a metal oxide, and 1-15 wt% of a second metal component based on the metal oxide, wherein the carrier comprises a phosphorus-containing high-silicon molecular sieve, a Beta molecular sieve, weakly acidic silica-alumina and aluminum oxide; in an XRD spectrogram of the phosphorus-containing high-silicon molecular sieve, thediffraction angle position of a first strong peak is at 5.9-6.9 degrees, the diffraction angle position of a second strong peak is at 10.0-11.0 degrees, and the diffraction angle position of a third strong peak is at 15.6-16.7 degrees. The catalyst has relatively high hydrocracking reaction activity and nitrogen-resistant stability.

Description

technical field [0001] The present disclosure relates to a hydrocracking catalyst and its preparation method and application. Background technique [0002] Industrial hydrocracking feeds include heavy and inferior fractions such as VGO, which contain a large amount of polycyclic aromatic hydrocarbons and naphthenes, as well as a large amount of nitrogen-containing compounds. The mass percentage of nitrogen in conventional hydrocracking feed is generally between 0.1 and 0.2. However, secondary refining processes such as coking, solvent deasphalting, etc. often generate a large amount of nitrogen-containing compounds, and the nitrogen content often exceeds 0.3%, and some even reach 0.6%, which makes it difficult to remove the nitrogen content to a minimum after using conventional refining catalysts. The 10-100 ppm level that conventional molecular sieve type hydrocracking catalysts can tolerate. Generally, weakly acidic amorphous silica-alumina or silicon-containing alumina ...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/20
CPCB01J29/80C10G47/20C10G2300/10C10G2300/1037C10G2300/1077C10G2300/107C10G2300/1074C10G2300/70Y02P20/52
Inventor 毛以朝龙湘云张润强赵阳赵广乐
Owner CHINA PETROLEUM & CHEM CORP
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