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Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low selectivity of middle distillates

Active Publication Date: 2016-11-23
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

[0050] (1) Preparation of amorphous silicon aluminum precursor

[0051] The preparation concentration is 40gAl 2 O 3 / L sodium aluminate working solution, which contains 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 the gel forming tank, then add 50mL of sodium silicate working solution, control the reaction temperature to 18℃, and pass in CO with a concentration of 50v% 2 Gas, when the pH value reaches 10.2, stop passing CO 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-aluminum precursor is based on the total weight of silica and alumina, and the content in terms of silica is 60wt%.

[0052] (2) Preparation of gel

[0053] Press Al 2 O 3 : SiO 2 : Na 2 O: H 2 O=1: 80: 1.5: 240, TEAOH / SiO 2 =0.070 Total feeding molar r...

Embodiment 2

[0059] (1) Preparation of amorphous silicon aluminum precursor

[0060] The preparation concentration is 50gAl 2 O 3 / L sodium aluminate working solution, which contains 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 put it in the gel forming tank, then add 60mL of sodium silicate working solution, control the reaction temperature to 20℃, and pass in CO with a concentration of 50v% 2 Gas, when the pH value reaches 10.0, stop CO 2 , Then add 40mL of sodium silicate working solution, and then ventilate and stabilize for 20 minutes to obtain an amorphous silicon-aluminum precursor. The amorphous silicon-aluminum precursor is based on the total weight of silica and alumina, and the content in terms of silica is 50wt%.

[0061] (2) Preparation of gel

[0062] Press Al 2 O 3 : SiO 2 : Na 2 O: H 2 O=1: 90: 1.7: 260, TEAOH / SiO 2 = 0.060 total feed molar ratio, add wa...

Embodiment 3

[0068] (1) Preparation of amorphous silicon aluminum precursor

[0069] The preparation concentration is 50gAl 2 O 3 / L sodium aluminate working solution, which contains 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 put it in the gel forming tank, then add 45mL of sodium silicate working solution, control the reaction temperature to 20℃, and pass in CO with a concentration of 50v% 2 Gas, when the pH value reaches 10.0, stop CO 2 , Then add 35mL of sodium silicate working solution, and then ventilate and stabilize for 20 minutes to obtain an amorphous silicon-alumina precursor. 50wt%.

[0070] (2) The preparation of the gel is the same as in Example 1, the difference is: according to Al 2 O 3 : SiO 2 : Na 2 O: H 2 O=1: 70: 1.4: 250, TEAOH / SiO 2 =0.062 total feed molar ratio to mix the materials.

[0071] (3) The crystallization is the same as in Example 1. Th...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst comprises a carrier and a hydrogenation active metal component, wherein the carrier comprises a beta molecular sieve, an SBA-15 molecular sieve, amorphous silica-alumina and an adhesive; properties of the beta molecular sieve are as follows: the mole ratio of SiO2 to Al2O3 is 60-100, the specific surface area is 505-850m<2> / g, the pore volume is 0.35-0.60mL / g, and the relative crystallinity is 100-148%; the relative crystallinity of the beta molecular sieve is greater than 95% after steam hydro-thermal treatment. As the beta molecular sieve and the SBA-15 which are high in crystallinity degree, high in silica-alumina ratio and good in stability are adopted as acid components of the carrier, the hydrocracking catalyst disclosed by the invention 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. In particular, β molecular sieve and SBA-15 molecular sieve are adopted as the main cracking components, and are suitable for the hydrocracking process for preparing high-quality middle distillate oil. Background technique [0002] With the development of the fuel market and increasingly stringent environmental regulations, countries are demanding higher quality of environmentally friendly products, and major petrochemical companies have increased their investment in the development of heavy oil conversion processes. The hydrocracking technology is the main process technology for producing low-sulfur content and high-quality middle distillates. [0003] The core of the hydrocracking technology is the hydrocracking catalyst. The technological progress depends on the improvement of the catalyst level. As the main acidic component of the hydrocracking catalyst, molecular sieves p...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/16
Inventor 樊宏飞王继锋孙晓艳于政敏
Owner CHINA PETROLEUM & CHEM CORP
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