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A kind of hydrogenation upgrading catalyst and preparation method thereof

A hydrogenation modification and catalyst technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as prone to secondary reactions and affect the yield and quality of diesel products, and achieve the improvement of diesel oil Improve product quality, improve the selectivity of ring-opening reaction, and increase the yield of diesel oil

Active Publication Date: 2020-03-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the catalyst has a large amount of internal surface acidity, the intermediate product of the ring-opening reaction is prone to secondary reactions when it enters the catalyst, which affects the yield and quality of diesel products.

Method used

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  • A kind of hydrogenation upgrading catalyst and preparation method thereof
  • A kind of hydrogenation upgrading catalyst and preparation method thereof
  • A kind of hydrogenation upgrading catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Mix 50g of commercial modified Y molecular sieve with 350g of macroporous alumina, add 4g / 100ml of dilute nitric acid, mix and roll in a mixer until it can be extruded, and extrude on an extruder to obtain a carrier;

[0027](2) Take the carrier obtained in step (1) and place it in a closed container filled with butadiene atmosphere, control the pressure of 0.3MPa and fully contact it for 30 minutes, and then heat it at 400°C for 600 hours in an air atmosphere to obtain a carbon-deposited carrier;

[0028] (3) After replacing the nitrogen in the roaster to an oxygen volume content of 2v%, heat it to 500°C;

[0029] (4) Roasting the carbon deposit carrier obtained in step (2) in the preheated roasting furnace of step (3) for 15 minutes;

[0030] (5) Take out the carrier after the primary roasting in step (4), and place it at room temperature for 0.5h;

[0031] (6) After the roasting furnace is replaced with nitrogen to an oxygen volume content of 1v%, it is heated t...

Embodiment 2

[0035] (1) Mix 50g of commercial modified Y molecular sieve with 350g of macroporous alumina, add 4g / 100ml of dilute nitric acid, mix and roll in a mixer until it can be extruded, and extrude on an extruder to obtain a carrier;

[0036] (2) Take heptene and soak the molecular sieve obtained in step (1) for 4 hours, and then heat it at 500°C for 650 hours in an air atmosphere to obtain a carbon deposit carrier;

[0037] (3) After nitrogen replacement in the roaster to an oxygen volume content of 3v%, heat to 600°C;

[0038] (4) Roasting the carbon deposit carrier obtained in step (2) in the preheated roasting furnace of step (3) for 15 minutes;

[0039] (5) Take out the carrier after the primary roasting in step (4), and place it at room temperature for 0.5h;

[0040] (6) After replacing the nitrogen in the roaster to an oxygen volume content of 2v%, heat it to 600°C;

[0041] (7) Place the carrier at room temperature in step (5) into the preheated roaster in step (6) and bak...

Embodiment 3

[0047] (1) Mix 50g of commercial modified Y molecular sieve with 350g of macroporous alumina, add 4g / 100ml of dilute nitric acid, mix and roll in a mixer until it can be extruded, and extrude on an extruder to obtain a carrier;

[0048] (2) Take the carrier obtained in step (1) and place it in a closed container filled with butadiene atmosphere, and control the pressure of 0.3MPa to fully contact it for 20 minutes, and then heat it at 450°C for 650 hours in an air atmosphere to obtain a carbon-deposited carrier;

[0049] (3) After nitrogen replacement in the roaster to an oxygen volume content of 1.5v%, heat to 650°C;

[0050] (4) Roasting the carbon deposit carrier obtained in step (2) in the preheated roasting furnace of step (3) for 15 minutes;

[0051] (5) Take out the carrier after the primary roasting in step (4), and place it at room temperature for 0.5h;

[0052] (6) After nitrogen replacement in the roaster to an oxygen volume content of 1.5v%, heat to 650°C;

[005...

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Abstract

The invention discloses a hydro-upgrading catalyst and a preparation method thereof. The hydro-upgrading catalyst comprises a silicon-aluminum carrier containing a Y molecular sieve, hydrogenation active metal and carbon, based on the weight of the catalyst, the silicon-aluminum carrier containing the Y molecular sieve is 68-88 percent by weight; measured by oxides, the content of the hydrogenation active metal is 1.0-15 percent by weight, and the content of the carbon is 10-20 percent by weight; in the silicon-aluminum carrier containing the Y molecular sieve, the content of the Y molecular sieve generally is 5-25 percent by weight. The hydrogenation and cracking active centers of the catalyst disclosed by the invention are mainly distributed on the outer surface, so that the side reaction in a catalyst channel is reduced, the ring-opening reaction selectivity in the catalytic diesel hydro-upgrading process is improved, the occurrence of alkane chain breaking reaction is reduced, andthe yield and the quality of modified diesel can be effectively improved.

Description

technical field [0001] The invention belongs to catalyst preparation technology, in particular to a preparation method of catalytic diesel hydrogenation upgrading catalyst. Background technique [0002] In recent years, with the increasingly heavy quality of crude oil processed in China, the raw materials processed by catalytic cracking are also becoming heavier and inferior. In addition, many companies have carried out the optimization of catalytic cracking units in order to improve the quality of gasoline or increase the production of propylene. The modification or improvement of the operating severity of the catalytic cracking unit resulted in deterioration of the quality of catalytic cracking products, especially catalytic diesel. Compared with other types of diesel, catalytic diesel has a higher density, higher sulfur, nitrogen and aromatic content, and lower cetane number, and the density of catalytic diesel produced by individual enterprises exceeds 0.95g / cm 3 , the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16C10G47/20
CPCB01J29/166B01J2229/186C10G47/20C10G2300/1055C10G2300/1059C10G2300/70C10G2400/04
Inventor 柳伟王震杜艳泽秦波高杭张晓萍
Owner CHINA PETROLEUM & CHEM CORP