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A kind of hydrocracking catalyst and its preparation method and application

A hydrocracking and catalyst technology, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of catalytic activity to be improved, and achieve stable activity, low preparation cost, and good activity.

Active Publication Date: 2021-04-02
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This catalyst has a high content of hydrogenation active components, but it can only treat feedstock oil with a dry point of 531°C, and the catalytic activity needs to be improved

Method used

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  • A kind of hydrocracking catalyst and its preparation method and application
  • A kind of hydrocracking catalyst and its preparation method and application
  • A kind of hydrocracking catalyst and its preparation method and application

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preparation example Construction

[0027] Preferably, the preparation method of the carrier includes: uniformly mixing aluminum hydroxide dry rubber powder and modified graphene at room temperature.

[0028] Preferably, the amount of the modified graphene is 0.05-0.5 wt%, especially preferably 0.1-0.3 wt%, of the total mass of the carrier.

[0029] Preferably, the modified graphene is formed by modifying graphene by water vapor spraying.

[0030] In the catalyst of the present invention, before the graphene in the carrier is mixed with alumina, it is modified by water vapor spraying, and the temperature of the water vapor used in the water vapor spraying modification is 100-180° C., and the pressure is It is 0.10~0.25MPa, and the spraying time is 1~5min.

[0031] Further, the graphene adopts single-layer graphene with a thickness of 0.5-3.7 nm, a particle size of 0.5-3 μm, and a specific surface area of ​​500-1000 m 2 / g.

[0032] In some embodiments, in the catalyst of the present invention, the dry aluminu...

Embodiment 1

[0087] Thickness 2.0nm, particle size 2.5μm, specific surface area 750m2 2g of graphene powder per gram was sprayed and modified with water vapor at 0.18MPa and 150°C for 1min to obtain bulky and flocculent modified graphene. Mix this modified graphene with 200g of aluminum hydroxide dry rubber powder, and use the above prepared tungsten-nickel impregnation solution, the concentration is 28.5g metal (calculated as oxide) / 100mL solution, the impregnation temperature is 24°C, liquid-solid The ratio is 4:1, impregnating aluminum hydroxide dry rubber powder mixed with modified graphene, the impregnating time is 2.0 hours, and drying at 150°C for 5 hours, and crushing into 180 meshes to obtain modified graphite containing metal components Aluminum hydroxide dry rubber powder mixture (that is, the mixture of metal-loaded components mentioned above, the dry basis is 72.0%).

[0088] Get the above-mentioned modified graphene aluminum hydroxide dry rubber powder mixture containing meta...

Embodiment 2

[0090] The thickness is 2.5nm, the particle size is 1.8μm, and the specific surface area is 600m 2 2.2 g of graphene powder per gram was sprayed and modified with water vapor at 0.10 MPa and 180° C. for 5 minutes to obtain bulky modified graphene. Mix this modified graphene with 200g of aluminum hydroxide dry rubber powder, and use the prepared molybdenum-cobalt impregnation solution, the concentration is 23.0g metal (calculated as oxide) / 100mL solution, the impregnation temperature is 20°C, and the liquid-solid ratio 6:1, impregnated aluminum hydroxide dry rubber powder mixed with modified graphene, the immersion time was 12 hours, and dried at 100°C for 10 hours, and crushed into 180 meshes to obtain modified graphene containing metal components Aluminum hydroxide dry rubber powder mixture (that is, the mixture of metal-loaded components mentioned above, with a dry basis of 68.0%).

[0091] Get the above-mentioned modified graphene aluminum hydroxide dry powder mixture cont...

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Abstract

The invention discloses a hydrocracking catalyst, which includes a metal active component, a carrier carrying the metal active component and a molecular sieve as a cracking component. The carrier is mainly composed of modified graphene and aluminum hydroxide dry glue. The metal active components include metal oxides, and the metal oxides include oxides of Group VIB and / or Group VIII metal elements; the specific surface area of ​​the catalyst is 250 to 550 m 2 / g, pore volume is 0.20~0.60ml / g. The invention also provides a preparation method and application of the catalyst. The catalyst provided by the invention has a simple preparation method, low cost, and the advantages of good activity, large pore volume, large specific surface area, and high strength. It is suitable for treating feed oils with high dry points (greater than 560°C) and poorer quality, and has active It has the characteristics of good stability and further converts the condensed aromatic hydrocarbons that have been initially saturated during hydrorefining into hydrocarbons with smaller molecules, which significantly reduces the yield of hydrogenation tail oil and significantly increases the yield of light fuel oil.

Description

technical field [0001] The invention relates to the field of preparation of hydrocracking catalysts, in particular to a hydrocracking catalyst suitable for treating inferior raw materials, its preparation method and application. Background technique [0002] The recovery of the world economy and the rapid development of my country's economy have increased the demand for light fuel oil in domestic and foreign oil markets. On the other hand, more and more stringent environmental protection regulations have also made hydrocracking technology, which can convert low-quality raw materials into light and clean fuels, more and more widely used. [0003] In recent years, my country's air quality has become worse and worse, and there is an urgent need for cleaner vehicle motors to transport fuel oil; Catalytic external oil slurry, catalytic heavy cycle oil, etc. These raw materials contain high content of residual carbon and asphaltenes. In addition, more coal-based oil fixed-bed hyd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16B01J35/10C10G47/20
CPCC10G47/20B01J29/166B01J2229/18B01J35/617B01J35/635B01J35/633B01J35/615
Inventor 许杰尹宏峰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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