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Nitrogen-resistant type hydrocracking catalyst carrier and preparation method thereof

A catalyst carrier, hydrocracking technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of poor nitrogen resistance, difficulty in balancing nitrogen resistance performance and cracking activity, and low cracking activity and other problems, to achieve the effect of high nitrogen resistance

Inactive Publication Date: 2019-05-17
CNOOC TIANJIN CHEM RES & DESIGN INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Chinese invention patent CN101450320 discloses a hydrocracking catalyst containing Y molecular sieve and its preparation method. In this invention, Y molecular sieve is obtained after hydrothermal treatment with a mixed aqueous solution of aluminum salt and acid. The catalyst activity is relatively high, but it is resistant to poor nitrogen capacity
[0007] The Chinese invention patent discloses a hydrocracking catalyst carrier and its preparation method. The hydrocracking catalyst prepared by the invention patent has a high resistance to nitrogen, but the cracking activity is low
[0008] In the prior art, the nitrogen resistance performance of hydrocracking catalysts is solved by different modification technologies of Y molecular sieves, but it is difficult to balance the matching between nitrogen resistance performance and cracking activity

Method used

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  • Nitrogen-resistant type hydrocracking catalyst carrier and preparation method thereof
  • Nitrogen-resistant type hydrocracking catalyst carrier and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment -1

[0022] Example-1 USY / amorphous silicon aluminum (amorphous silicon aluminum SiO 2 Content 30.0wt%)

[0023] Weigh 210.0g TEOS and dissolve it in 250mL deionized water. After hydrolysis, mix it with 1200mL 2.5mol / L aluminum nitrate aqueous solution and stir well, then add 108.0g USY molecular sieve (SiO 2 :Al 2 O 3 The molar ratio is 12, and the particle size is 100 nm) to form a mixed solution. Ammonia with a mass concentration of 12% by weight was added to the mixed solution in drops until the pH of the mixed solution was 9.8. After the addition of ammonia, the mixed glue solution was stirred and aged at 40°C for 4 hours. After the synthesized product is allowed to stand and age for 6 hours, it is filtered and washed to neutrality by suction, and the filter cake is dried at 120°C for 4 hours and calcined at 520°C for 4 hours to obtain 30% USY / amorphous silicon-aluminum composite material, marked with Y- SiAl-1.

Embodiment -2

[0024] Example-2 USY / amorphous silicon aluminum (amorphous silicon aluminum SiO 2 Content 50.0wt%)

[0025] Weigh 340.0g TEOS and dissolve it in 100mL deionized water, mix it with 800mL 2.5mol / L aluminum chloride salt aqueous solution after hydrolysis, and stir well, then add 50.0g USY molecular sieve (SiO 2 :Al 2 O 3 The molar ratio is 15 and the particle size is 100 nm) to form a mixed solution. Ammonia with a mass concentration of 12% by weight was added to the mixed solution in drops until the pH of the mixed solution was 9.8. After the addition of ammonia, the mixed glue solution was stirred and aged at 40°C for 4 hours. After the synthesized product is allowed to stand and age for 6 hours, it is filtered and washed to neutrality by suction, and the filter cake is dried at 120°C for 4 hours and calcined at 520°C for 4 hours to obtain a 20% USY / amorphous silicon-aluminum composite material, marked with Y- SiAl-2.

Embodiment -3

[0026] Example-3 USY / amorphous silicon aluminum (amorphous silicon aluminum SiO 2 Content 30.0wt%)

[0027] Weigh 340.0g TEOS and dissolve it in 100mL deionized water, mix it with 800mL 2.5mol / L aluminum chloride salt aqueous solution after hydrolysis, and stir well, then add 200.0g USY molecular sieve (SiO 2 :Al 2 O 3 The molar ratio is 40, and the particle size is 250 nm) to form a mixed solution. Ammonia with a mass concentration of 12% by weight was added to the mixed solution in drops until the pH of the mixed solution was 9.8. After the addition of ammonia, the mixed glue solution was stirred and aged at 40°C for 4 hours. After the synthesized product is allowed to stand and age for 6 hours, it is filtered and washed to neutrality by suction, and the filter cake is dried at 120°C for 4 hours and calcined at 520°C for 4 hours to obtain a 50% USY / amorphous silicon-aluminum composite material, marked with Y- SiAl-3.

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Abstract

The invention provides a nitrogen-resistant type hydrocracking catalyst carrier and a preparation method thereof. The nitrogen-resistant type hydrocracking catalyst carrier is jointly prepared from asilicon-aluminum molecular sieve / amorphous silicon-aluminum composite material, macroporous aluminum oxide and SB powder. the silicon aluminum molecular sieve / amorphous silicon aluminum composite material is a composite material synthesized by taking the silicon aluminum molecular sieve as a core and wrapping the modified molecular sieve with amorphous silicon aluminum, and the composite materialhas the cascade-distributed acid strength and of a cascade-distributed hole structure, the specific surface area of the carrier is 400-650 m<2> / g, the pore volume is 0.55-0.70 cm<3> / g, the total acidcontent of fourier infrared absorption spectroscopy is 1.1-1.5 mmol / g, the B acid / L acid molar ratio is 0.38-0.58, and the medium strong acid proportion is 50-80%. The carrier is loaded with VI B group metal oxide and VIII group metal oxide to prepare a hydrocracking catalyst, and adapts to a high-nitrogen distillate hydrocracking reaction.

Description

Technical field [0001] The invention relates to the technical field of oil refining hydrogenation catalysts, and relates to a method for preparing a high-nitrogen-resistant hydrocracking catalyst carrier, in particular to a hydrogenation catalyst carrier containing a molecular sieve amorphous silicon-aluminum composite material, and a preparation method and application thereof. Background technique [0002] As the world's petroleum resources are becoming increasingly heavy and inferior, and petroleum fuel products are becoming more and more quality and cleaner, the development of efficient conversion of heavy crude oil and clean oil production technology has become the top priority of today's petroleum processing industry. Hydrocracking technology is already a comprehensive processing technology that integrates the lightening of heavy oil with the production of clean oils and the solution of the demand for chemical raw materials. The core of hydrocracking technology is a hydrocra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08B01J29/16B01J29/40B01J29/70B01J29/80B01J35/04B01J35/10C10G47/16C10G47/20
Inventor 肖寒朱金剑宋国良张玉婷黄敬远于海斌彭雪峰杨涛张景成孙彦民周鹏洪美花张国辉张尚强张雪梅
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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