Medium oil type hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low selectivity of middle distillate oil, achieve good crystallization guiding effect, high-medium oil selectivity , the effect of reducing usage

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

[0048] (1) Preparation of amorphous silicon-aluminum precursor

[0049] 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%.

[0050] (2) Preparation of gel

[0051] 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

[0057] (1) Preparation of amorphous silicon-aluminum precursor

[0058] The preparation concentration is 50gAl 2o 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%.

[0059] (2) Preparation of gel

[0060] 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

[0066] (1) Preparation of amorphous silicon-aluminum precursor

[0067] 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%.

[0068] (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 medium oil type hydrocracking catalyst and a preparation method thereof. The catalyst comprises a carrier and a hydrogenating active component; the carrier comprises a beta molecular sieve, a Y molecular sieve, amorphous silica-alumina and a binder; with the weight of the carrier as a benchmark, the content of the beta molecular sieve is 2-20 wt%, the content of the Y molecular sieve is 10-30 wt%, the content of the amorphous silica-alumina is 20-60 wt%, and the content of the binder is 15-40 wt%; the beta molecular sieve has the following properties: the SiO2 / Al2O3 molar ratio is 60-100, the specific surface area is 505-850 m<2> / g, the pore volume is 0.35-0.60 mL / g, and the relative crystallinity degree is 100%-148%; the relative crystallinity degree of the beta molecular sieve subjected to water steam hydrothermal treatment is more than or equal to 95%. The catalyst has the characteristics of relatively high activity, medium oil selectivity, and high product quality.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst for producing high-quality middle distillate oil by using beta molecular sieve and Y-type molecular sieve as main cracking components. Background technique [0002] In view of the current shortage of petroleum resources, increasingly stringent environmental protection requirements, and the structure of petroleum products that do not meet market demand, the application of hydrocracking technology will become an effective technical measure to improve the quality of petroleum products, reduce environmental pollution, and increase market adaptability. It has become the most important process device in a modern refinery. At the same time, the increasingly stringent emission standards for motor fuels have made the problem of directly producing high-quality clean fuels from processing low-quality heavy oils increasingly prominent, and ...

Claims

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Application Information

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