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A kind of hydrocracking catalyst and its preparation method and application

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem that the yield of light oil with product density cannot meet the requirements, and the yield of light fuel oil is low, etc. problems, to achieve high selectivity, good activity stability, and improve the effect of comprehensive performance

Active Publication Date: 2020-10-30
BEIJING GAOXIN LIHUA TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current coal tar hydrocracking catalysts are generally aimed at medium and low temperature coal tar. Applying it to high temperature coal tar will easily cause the density of the product and the yield of light oil to fail to meet the requirements.
CN100348702C discloses a method for preparing fuel oil from coal tar. Coal tar is hydrogenated by a two-stage hydrogenation method. The first stage uses a hydrogenation pre-refining catalyst to mainly remove sulfur and nitrogen in the coal tar. The hydrogenation upgrading catalyst system carries out aromatic hydrocarbon saturation reaction and further desulfurization and denitrogenation reaction to obtain qualified hydrogenated fuel oil, and the yield of light fuel oil is low

Method used

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  • A kind of hydrocracking catalyst and its preparation method and application
  • A kind of hydrocracking catalyst and its preparation method and application
  • A kind of hydrocracking catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Mix 41.28g of Y molecular sieve, 21.96g of β molecular sieve, 186.78g of macroporous alumina and 11.12g of modified pottery clay, then add 1.52g of crushing aid Selina powder, and add 2g of HNO 3 / 100cm 3 The acid solution was mixed and kneaded, extruded into a five-tooth spherical shape, dried at 120°C for 8 hours, and roasted in a muffle furnace for 4 hours at 550°C to obtain the catalyst carrier Z1;

[0058] (2) Weigh 38.94g of ammonium metatungstate, 39.46g of nickel nitrate, and 4.87g of phosphoric acid, and dissolve them in deionized water to form impregnating solutions A 1 , B 1 、C 1 , using equal volume impregnation, the carrier obtained in step (2) was placed in A 1 Immerse at medium and normal temperature for 6 hours, rotate and evaporate on a rotary evaporator for 4 hours under vacuum at 60°C, place in an oven at a constant temperature of 120°C for 8 hours; then put it in a muffle furnace and roast at 500°C for 3 hours, and then impregnate separately ...

Embodiment 2

[0061] (1) Mix 20.64g of Y molecular sieve, 43.91g of β molecular sieve, 186.78g of macroporous alumina and 11.12g of modified clay, then add 1.49g of crushing aid Selina powder, and add 2g of HNO 3 / 100cm 3 The acid solution was mixed and kneaded, extruded into a five-tooth spherical shape, dried at 120°C for 8 hours, and calcined in a muffle furnace for 4 hours at 550°C to obtain the catalyst carrier Z2;

[0062] (2) Weigh 40.10g of ammonium metatungstate, 40.64g of nickel nitrate, and 4.87g of phosphoric acid, and dissolve them in deionized water to form impregnating solutions A 2 , B 2 、C 2 , using equal volume impregnation, the catalyst carrier obtained in step (1) is placed in A 2 Immerse at medium and normal temperature for 6 hours, rotate and evaporate on a rotary evaporator for 4 hours under vacuum at 60°C, place in an oven at a constant temperature of 120°C for 8 hours; then put it in a muffle furnace and roast at 500°C for 3 hours, and then impregnate separately ...

Embodiment 3

[0064] Only the mass content of each component in the catalyst carrier Z3 is different from that in Example 1, see Table 1 for details, and the others are the same as in Example 1. The properties of the obtained hydrocracking catalyst F3 are shown in Table 2.

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Abstract

The invention discloses a hydrocracking catalyst as well as a preparation method and the application thereof. The hydrocracking catalyst comprises a carrier, active ingredients and aids, wherein the carrier comprises the following components in percentage by weight: 2-30% of a Y molecular sieve, 2-30% of a beta molecular sieve, 50-70% of porous alumina and 1-12% of modified clay. The hydrocrackingcatalyst disclosed by the invention is applied to high temperature coal tar hydrogenation for preparing diesel components, and has the advantages of high selectivity, high activity, high stability, high light oil yield, high diesel yield, excellent quality and the like.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and specifically relates to a hydrocracking catalyst and its preparation method and application, in particular to a hydrocracking catalyst for high-temperature coal tar hydrogenation to produce diesel oil and its preparation method. Background technique [0002] China is rich in coal resources, and the clean utilization of coal resources has become an urgent problem to be solved. In the high-temperature dry distillation or gasification of coal, a by-product-coal tar will be obtained. According to the different pyrolysis temperature of coal, its by-products are mainly divided into: low-temperature (450-650°C) coal tar, medium-temperature (600-800°C) Coal tar, high temperature (900 ~ 1000 ℃) coal tar. The output of coal tar in China is relatively large. As of 2016, the output of coal tar is more than 25 million tons, and the output is increasing year by year. [0003] The composition of coal ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80C10G47/20
CPCB01J29/166B01J29/7815B01J29/80B01J2229/18C10G47/20C10G2400/04
Inventor 张谦温宋兆伟张伟孙嬛孙锦昌
Owner BEIJING GAOXIN LIHUA TECH CO LTD
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