Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, catalyst carriers, molecular sieve catalysts, etc., can solve the problem of low selectivity of middle distillate oil, achieve good crystallization guiding effect, high crystallinity, and reduce the use of amount of effect

Active Publication Date: 2018-10-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Beta molecular sieves are not hydrothermally treated or hydrothermally treated at relatively low temperatures, the molar ratio of silica to alumina is less than 30:1 and at least 28 wt% SF 6 Adsorption capacity, the β molecular sieve obtained by modification is used as a catalyst prepared by cracking components, and the selectivity of middle distillates is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Preparation of amorphous silicon-aluminum precursor

[0052] The preparation concentration is 40gAl 2 o 3 / L sodium aluminate working solution, take SiO 2 28wt% sodium silicate solution, then diluted to a concentration of 120g SiO 2 / L sodium silicate working solution. Take 200mL of sodium aluminate working solution and place it in a gel-forming tank, then add 50mL of sodium silicate working solution, control the reaction temperature at 18°C, and feed CO with a concentration of 50v%. 2 gas, stop passing CO when the pH reaches 10.2 2 , then add 50mL of sodium silicate working solution, and then ventilate and stabilize for 20 minutes to obtain an amorphous silicon-aluminum precursor. The amorphous silicon-alumina precursor is based on the total weight of silicon dioxide and aluminum oxide, and the content in terms of silicon dioxide is 60wt%.

[0053] (2) Preparation of gel

[0054] Press Al 2 o 3 : SiO 2 : Na 2 O: H 2 O=1:80:1.5:240, TEAOH / SiO 2 =0.070 t...

Embodiment 2

[0060] (1) Preparation of amorphous silicon-aluminum precursor

[0061] The preparation concentration is 50gAl 2 o 3 / L sodium aluminate working solution, take SiO 2 28wt% sodium silicate solution, then diluted to a concentration of 100g SiO 2 / L sodium silicate working solution. Take 200mL of sodium aluminate working solution and place it in a gel-forming tank, then add 60mL of sodium silicate working solution, control the reaction temperature at 20°C, and feed CO with a concentration of 50v%. 2 gas, stop passing CO when the pH reaches 10.0 2 , then add 40mL of sodium silicate working solution, and ventilate and stabilize for 20 minutes to obtain an amorphous silicon-aluminum precursor. The amorphous silicon-alumina precursor is based on the total weight of silicon dioxide and aluminum oxide, and the content in terms of silicon dioxide is 50wt%.

[0062] (2) Preparation of gel

[0063] Press Al 2 o 3 : SiO 2 : Na 2 O: H 2 O=1:90:1.7:260, TEAOH / SiO 2 = 0.060 total...

Embodiment 3

[0069] (1) Preparation of amorphous silicon-aluminum precursor

[0070] The preparation concentration is 50gAl 2 o 3 / L sodium aluminate working solution, take SiO 2 28wt% sodium silicate solution, then diluted to a concentration of 100g SiO 2 / L sodium silicate working solution. Take 160mL of sodium aluminate working solution and place it in a gel-forming tank, then add 45mL of sodium silicate working solution, control the reaction temperature at 20°C, and feed CO with a concentration of 50v%. 2 gas, stop passing CO when the pH reaches 10.0 2 , then add 35mL of sodium silicate working solution, and then ventilate and stabilize for 20 minutes to obtain an amorphous silica-alumina precursor. The amorphous silica-alumina precursor is based on the total weight of silica and alumina, and the content in terms of silica is 50wt%.

[0071] (2) The preparation of the gel is the same as in Example 1, the difference is that: according to Al 2 o 3 : SiO 2 : Na 2 O: H 2 O=1:70:...

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Abstract

The invention discloses a preparation method for a hydrocracking catalyst and a preparation method thereof. The catalyst comprises a carrier and a hydrogenation active metal component. The carrier comprises a beta molecular sieve, amorphous silicon aluminum and an adhesive. The beta molecular sieve has the properties that a mol ratio of SiO2 to Al2O3 is 60 to 100; a specific surface area is 505 to 850 m<2> / g; a pore volume is 0.35 to 0.60 mL / g; and relative crystallinity is 100 to 148%. After hydro-thermal treatment by water vapor, the relative crystallinity of the beta molecular sieve is 95% or above. According to the invention, the beta molecular sieve with high crystallinity, a high silica-alumina ratio and good stability is used as an acidic component of the carrier and matched with amorphous silicon aluminum; and the hydrocracking catalyst prepared from the carrier is especially applicable to one-stage tandem hydrocracking process and has the characteristics of high activity, good medium oil selectivity and good product properties.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, more specifically a hydrocracking catalyst containing β molecular sieves and a preparation method thereof. In particular, the hydrocracking catalyst and the preparation method thereof can produce high-quality low-condensation diesel oil while taking into account the catalyst activity and the selectivity of middle distillates. Background technique [0002] Diesel, as a transportation fuel for compression ignition engines, plays an irreplaceable role in modern production and life, and can be used as motor fuel for vehicles, tanks, airplanes, tractors, railway vehicles and other vehicles or other machinery , can also be used for power generation, heating and so on. Depending on the industry and environment in which it is used, users have very different quality requirements for diesel products. With the continuous improvement of economic development and environmental prote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80B01J29/076B01J32/00C10G47/20
Inventor 樊宏飞王继锋孙晓艳于政敏
Owner CHINA PETROLEUM & CHEM CORP
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