Diesel oil hydrogenation modification catalyst and preparation method thereof

A hydrogenation modification and catalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor thermal stability and hydrothermal stability, low crystallinity, etc., and achieve good thermal stability properties, high crystallinity, and good hydrothermal stability

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

Although this method reduces the amount of template agent and increases the yield of β molecular sieve, it needs to add composite template agent and seed crystal, and when the silicon-aluminum ratio exceeds 30, the crystallinity is low, and the thermal stability and hydrothermal stability are poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation of amorphous silicon-aluminum precursor

[0047] 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%.

[0048] (2) Preparation of gel

[0049] 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

[0055] (1) Preparation of amorphous silicon-aluminum precursor

[0056] 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%.

[0057] (2) Preparation of gel

[0058] Press Al 2 o 3 : SiO 2 : Na2 O: H 2 O=1:90:1.7:260, TEAOH / SiO 2 = 0.060 total f...

Embodiment 3

[0064] (1) Preparation of amorphous silicon-aluminum precursor

[0065] 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%.

[0066] (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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PUM

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Abstract

The invention discloses a diesel oil hydrogenation modification catalyst and a preparation method thereof. The catalyst comprises a hydrogenating active metal component and a carrier; the carrier comprises a beta molecular sieve, macroporous alumina and a binder; with the weight of the carrier as a benchmark, the content of the beta molecular sieve is 5-30 wt%, the content of the macroporous alumina is 20-65 wt%, and the content of the binder is 15-50 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 high diesel oil product yield, good product quality, especially low condensation point of the diesel oil and the like.

Description

technical field [0001] The present invention relates to a diesel oil hydrogenation and upgrading catalyst and its preparation method, more specifically a catalyst capable of producing diesel oil with the characteristics of high cetane number, low freezing point, and low density by using low-quality diesel oil as raw material Diesel hydrogenation upgrading catalyst containing β molecular sieve and preparation method thereof. Background technique [0002] As crude oil becomes heavier and worse, the quality of secondary processed diesel fractions, especially catalytic cracking diesel oil, deteriorates. Depth, which in turn leads to further deterioration of the quality of FCC diesel. With the increasingly stringent environmental protection requirements and the continuous upgrading of diesel quality standards, especially the Euro IV and Euro V standards in the emission standards put forward stricter requirements on the sulfur and aromatic content, cetane number, density, T95 and...

Claims

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Application Information

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IPC IPC(8): B01J29/076C10G45/12
Inventor 于政敏孙晓艳樊宏飞王继锋
Owner CHINA PETROLEUM & CHEM CORP
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