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Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is used in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of reducing the amount of strong acid, blocking and covering part of the acid center, and increasing the proportion of medium and strong acids. The effect of reducing, reducing excessive cracking, and increasing the proportion of medium and strong acids

Active Publication Date: 2015-01-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method makes the molecular sieve and amorphous silica-alumina more evenly dispersed, and overcomes the problem that molecular sieves are prone to agglomeration, or molecular sieve and amorphous silica-alumina enter into each other's pores, block some pores and cover some acid centers, and make the carrier and catalyst The specific surface area, pore volume and acidity are greatly improved, the amount of strong acid is reduced, the proportion of medium strong acid is increased, and the amount of B acid is increased, which improves the catalytic performance of the hydrocracking catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1

[0028] Composite F-1 of amorphous silica-alumina and Y-type molecular sieve prepared according to the method provided by the present invention.

[0029] Add 1000g of amorphous silica-alumina (30wt% silicon dioxide content) into 2 liters of distilled water, stir and beat to form a slurry (a), dissolve 100g of polyethylene glycol ether in 1L of water to form a solution (b), take 250 grams of industrially produced NaY zeolite (SiO 2 / A1 2 o 3 =5.0 (molar ratio), unit cell constant is 2.463nm, Na 2 O content is 9wt%), with 2500ml concentration of 10wt% NH 4 NO 3 The aqueous solution was exchanged at 90°C for 1 hour, and then 2500ml of oxalic acid with a pH value of 2 and NH 4 NO 3 The mixed solution was exchanged twice, and the slurry (a) and solution (b) were added at the same time, and then the first hydrothermal treatment was carried out at 0.098 MPa and 550°C for 2 hours, and then the concentration of 10wt% NH 4 NO 3 Aqueous solution is exchanged to...

Embodiment 2

[0031] Composite F-2 of amorphous silica-alumina and Y-type molecular sieve prepared according to the method provided by the present invention.

[0032] Add 1000g of amorphous silica-alumina (30wt% silicon dioxide content) to 2 liters of distilled water, stir and beat to form a slurry (a), dissolve 100g of polyoxyethylene amide in 1L of water to form a solution (b), take 250 grams Industrially produced NaY zeolite (SiO 2 / A1 2 o 3 =5.0 (molar ratio), unit cell constant is 2.463nm, Na 2 O content is 9wt%), with 2500ml concentration of 10wt% NH 4 NO 3 The aqueous solution was exchanged at 90°C for 1 hour, and then 2500ml of oxalic acid with a pH value of 2 and NH 4 NO 3 The mixed solution was exchanged twice, followed by the first hydrothermal treatment at 0.098 MPa and 550 °C for 2 hours, and then 10 wt% NH 4 NO 3 Aqueous solution is exchanged to Na 2 O3 The aqueous solution was exchanged, filtered, washed with water, and dried at 120° C. for 4 hours to obtain composit...

Embodiment 3

[0034] Composite F-3 of amorphous silica-alumina and Y-type molecular sieve prepared according to the method provided by the present invention.

[0035] Add 1000g of amorphous silica-alumina (silica content: 20wt%) to 2 liters of distilled water, stir and beat to form a slurry (a), dissolve 150g of polyoxyethylene amine in 1L of water to form a solution (b), take 250 grams Industrially produced NaY zeolite (SiO 2 / A1 2 o 3 =5.0 (molar ratio), unit cell constant is 2.463nm, Na 2 O content is 9wt%), with 2500ml concentration of 10wt% NH 4 NO 3 The aqueous solution was exchanged at 90°C for 1 hour, and then 2500ml of oxalic acid with a pH value of 2 and NH 4 NO 3 The mixed solution was exchanged twice, and the slurry (a) and solution (b) were added at the same time, and then the first hydrothermal treatment was carried out at 0.098 MPa and 550°C for 2 hours, and then the concentration of 10wt% NH 4 NO 3 Aqueous solution is exchanged to Na 2 After O3 The aqueous solution ...

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PUM

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst contains a compound of amorphous silica-alumina and a Y-type molecular sieve. In NaY molecular sieve modification, before final hydrothermal treatment, amorphous silica-alumina slurry and a surfactant are introduced so that the compound is obtained. Therefore, molecular sieve and amorphous silica-alumina dispersion is uniform and molecular sieve agglomeration or channel blocking is avoided so that specific surface areas and pore volumes of a carrier and the hydrocracking catalyst are greatly improved. The preparation method reduces a strong acid amount and improves a moderately strong acid ratio and a B acid amount in case of the little change of a total acid amount, reduces excessive cracking, avoids secondary cracking, is conducive to improvement of middle distillate selectivity, and reduces a yield of low-additional value products such as dry gas, liquefied gas and light naphtha.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, more specifically to a high and medium oil type hydrocracking catalyst containing molecular sieves and amorphous silicon-aluminum carrier materials and a preparation method thereof. Background technique [0002] With the increasing demand for middle distillates in the international oil market, more middle distillates need to be obtained from heavy oil, and the hydrocracking process is one of the important means of lightening heavy oil. Because the process has the characteristics of strong raw material adaptability, good product quality, flexible adjustment operation, high yield of middle distillate products, and flexible product structure, the status of hydrocracking process has become more and more important, especially for the current oil The application of hydrocracking technology will become an effective technical measure to improve the quality of petroleum products...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J35/10C10G47/20
Inventor 樊宏飞孙晓艳
Owner CHINA PETROLEUM & CHEM CORP
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