Preparation method of hydrocracking catalyst, hydrocracking catalyst and application of hydrocracking catalyst

A hydrocracking and catalyst technology, which is applied in the preparation method of hydrocracking catalyst, hydrocracking catalyst and application field, can solve the problems of low yield of cracked light oil, poor catalyst activity, short catalyst life, etc. and the effect of reducing sulfur content, improving freezing point, and increasing cetane number

Active Publication Date: 2022-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst prepared by this method has poor activity, more coking in the reaction, shorter catalyst life, and low yield of cracked light oil, and the conversion rate of coal tar pitch needs to be further improved

Method used

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  • Preparation method of hydrocracking catalyst, hydrocracking catalyst and application of hydrocracking catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] (1) Preparation of catalyst support for coal tar hydrocracking

[0077] (1) Preparation of amorphous silica-alumina dry rubber powder A1 and slurry: sodium aluminate solution concentration 18gAl 2 o 3 / L, the concentration of sodium silicate solution is 100gSiO 2 / L, take 0.75L sodium aluminate solution and put it into the gel-forming tank, then add 0.35L sodium silicate solution, control the reaction temperature at 20°C, and feed CO with a concentration of 40v%. 2 gas, CO 2 When the gas accounts for 50% of the total intake, add 0.15L sodium silicate solution while ventilating to control the pH value of the gel to 9.5, then ventilate and stabilize for 20 minutes, filter the slurry and wash it with 65°C deionized water until neutral. The filter cake was beaten with water at a solid-to-liquid volume ratio of 10:1, treated at 130°C under 3.5MPa water vapor pressure for 2 hours, dried at 120°C for 6 hours, crushed and sieved to obtain the amorphous silica-alumina product...

Embodiment 2

[0085] (1) Preparation of hydrocracking catalyst carrier

[0086] (1) Preparation of amorphous silica-alumina dry rubber powder A2 and slurry: sodium aluminate solution concentration 20gAl 2 o 3 / L, the concentration of sodium silicate solution is 35gSiO 2 / L, put 0.3L sodium aluminate solution into the gel-forming tank, then add 0.5L sodium silicate solution, control the reaction temperature at 22°C, and feed CO with a concentration of 35v%. 2 gas, CO 2 When the gas accounts for 50% of the total intake, add 0.2L sodium silicate solution while ventilating to control the pH value of the gel to 9.8, then ventilate and stabilize for 20 minutes, filter the slurry and wash it with 75°C deionized water until neutral. The filter cake was beaten with water at a solid-to-liquid volume ratio of 8:1, treated at 120°C and 3.0 MPa steam pressure for 2 hours, dried at 120°C for 8 hours, crushed and sieved to obtain amorphous silicon-aluminum product A2, amorphous silicon The properties ...

Embodiment 3

[0094] (1) Preparation of hydrocracking catalyst carrier

[0095] (1) Preparation of amorphous silica-alumina dry rubber powder A3 and slurry: concentration of sodium aluminate solution 21gAl 2 o 3 / L, sodium silicate working solution concentration 65gSiO 2 / L, take 0.83L sodium aluminate solution and place it in a gel-forming tank, then add 0.5L sodium silicate solution, control the reaction temperature at 32°C, and feed CO with a concentration of 52v%. 2 Gas, stop when the pH value reaches 9.8, then ventilate and stabilize for 20 minutes, wash until neutral, add water to the filter cake according to the solid-liquid volume ratio of 9:1, and treat it at 130°C for 3 hours under 3.9MPa water vapor pressure. After drying at 130°C for 8 hours, it was crushed and sieved to obtain the amorphous silica-alumina product A3. The properties of amorphous silica-alumina dry rubber powder A3 are shown in Table 1. The prepared amorphous silica-alumina A3 is mixed with deionized water an...

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst, the hydrocracking catalyst and application of the hydrocracking catalyst. The preparation method of the hydrocracking catalyst comprises the following steps: (i) preparing a Y/Al-SBA-15 composite molecular sieve; (ii) adding the Y/Al-SBA-15 composite molecular sieve prepared in the step (i), a modified beta molecular sieve and alumina dry glue powder into an acidic solution, molding, drying and roasting to obtain a hydrocracking catalyst carrier; and (iii) impregnating the hydrocracking catalyst carrier obtained in the step (ii) with a solution containing an active metal component, and then drying and roasting to obtain the hydrocracking catalyst. The hydrocracking catalyst prepared by the method provided by the invention has excellent comprehensive performance, is used in a coal tar hydrocracking reaction process, and has excellent product quality.

Description

technical field [0001] The invention relates to a method for preparing a hydrocracking catalyst, in particular to a method for preparing a hydrocracking catalyst suitable for converting coal tar fractions into clean gasoline and diesel oil. Background technique [0002] Coal tar is an important by-product in the process of coal pyrolysis and carbonization. It is a black or dark brown viscous liquid with pungent odor. It is a complex mixture of hydrocarbons with high aromaticity. According to the temperature of coal pyrolysis and carbonization Different from the process method, coal tar can be divided into low-temperature coal tar and high-temperature coal tar. Coal tar raw materials have the characteristics of high content of heteroatoms such as sulfur and nitrogen, high content of ash, high content of polycyclic aromatic hydrocarbons, and high content of colloids and asphaltenes. [0003] Coal tar hydrogenation is carried out under high temperature and high pressure, under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J35/10C10G47/20
CPCB01J29/80B01J35/1019B01J35/1038B01J35/1042B01J35/1061B01J35/0066C10G47/20B01J29/7815B01J29/0341C10G2300/307C10G2400/02C10G2400/04B01J2229/186C10G2300/308C10G2300/202Y02P20/52
Inventor 唐兆吉王继锋樊宏飞
Owner CHINA PETROLEUM & CHEM CORP
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