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A kind of hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in catalyst activation/preparation, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problem of strong gasoline component saturation ability and unfavorable hydroconversion to produce high-octane gasoline and gasoline products. The problem of large loss of octane number, etc., to achieve the effect of improving gasoline product yield and octane number

Active Publication Date: 2019-11-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot selectively reduce the hydrogenation saturation of gasoline components, so the octane number loss of gasoline products is relatively large
[0005] EP20110834653 discloses a method for preparing a polycyclic aromatic hydrocarbon hydrogenation conversion catalyst. The catalyst carrier is composed of β molecular sieve and pseudo-boehmite. The active metal components of Group VIB and Group VIII are added by conventional methods, but the catalyst is also Strong saturation ability for gasoline components, which is not conducive to the process of catalytic diesel hydrogenation conversion to produce high-octane gasoline

Method used

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  • A kind of hydrocracking catalyst and preparation method thereof
  • A kind of hydrocracking catalyst and preparation method thereof
  • A kind of hydrocracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Mix 550g of commercial modified Y molecular sieve with 450g 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;

[0029] (2) Take the carrier obtained in step (1) and place it in a closed container filled with butadiene atmosphere, control the pressure of 0.3 MPa and fully contact it for 20 minutes, and then heat it at 400°C for 600 hours in an air atmosphere to obtain a carbon-deposited carrier;

[0030] (3) After replacing the nitrogen in the roaster to an oxygen volume content of 2v%, heat it to 500°C;

[0031] (4) Roasting the carbon deposit carrier obtained in step (2) in the preheated roasting furnace of step (3) for 15 minutes;

[0032] (5) Take out the carrier after the primary roasting in step (4), and place it at room temperature for 0.5h;

[0033] (6) After nitrogen replacement in the roaster to oxygen volume content of 1v%, heat to 600°C;

[0034] (7...

Embodiment 2

[0037] (1) Mix 550g of commercial modified Y molecular sieve with 450g 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;

[0038] (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;

[0039] (3) After nitrogen replacement in the roaster to an oxygen volume content of 3v%, heat to 600°C;

[0040] (4) Roasting the carbon deposit carrier obtained in step (2) in the preheated roasting furnace of step (3) for 15 minutes;

[0041] (5) Take out the carrier after the primary roasting in step (4), and place it at room temperature for 0.5h;

[0042] (6) After replacing the nitrogen in the roaster to an oxygen volume content of 2v%, heat it to 600°C;

[0043] (7) Put the carrier placed at room temperature in step (5) into the preheated roaster in step (6) a...

Embodiment 3

[0049] (1) Mix 550g of commercial modified Y molecular sieve with 450g 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;

[0050] (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;

[0051] (3) After nitrogen replacement in the roaster to an oxygen volume content of 1.5v%, heat to 650°C;

[0052] (4) Roasting the carbon deposit carrier obtained in step (2) in the preheated roasting furnace of step (3) for 15 minutes;

[0053] (5) Take out the carrier after the primary roasting in step (4), and place it at room temperature for 0.5h;

[0054] (6) After nitrogen replacement in the roaster to an oxygen volume content of 1.5v%, heat to 650°C;

[00...

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Abstract

The invention discloses a hydro-cracking catalyst and a preparation method thereof. The catalyst is divided into a carbon deposition area and a metal area along the center of the catalyst to the outersurface of the catalyst from inside to outside; based on the content of total hydrogenation active metals of the catalyst, the content of the hydrogenation active metals in the metal area is 90-95 percent by weight; based on the content of total carbons of the catalyst, the content of the carbons in the metal area is 0.02-0.1 percent by weight; the inside of the metal area is the carbon deposition area, and based on the content of total carbons of the catalyst, the content of the carbons in the carbon deposition area is 70-90 percent by weight, and the content of the hydrogenation active metals in the carbon deposition area is 5-15 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, and the gasoline product yield and the octane number are improved.

Description

technical field [0001] The invention belongs to catalyst preparation technology, in particular to a preparation method of catalytic diesel hydrocracking 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. [0003] In order to improve the utilization rate of petroleum resources, improve the overall quality level of gasoline and diesel fuel, realize the goal of product blending optimization and product value maximization, and meet the growing demand for cle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16B01J37/08B01J37/02C10G47/20
CPCB01J29/166B01J37/0201B01J37/088B01J2229/186C10G47/20C10G2300/1055C10G2300/1059C10G2300/305C10G2400/02
Inventor 王阔柳伟杜艳泽秦波高杭张晓萍
Owner CHINA PETROLEUM & CHEM CORP