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Method for preparing hydrocracking catalyst containing hierarchical pore Beta molecular sieve

A hydrocracking and molecular sieve technology, applied in the field of catalysis, can solve the problems of single, low catalyst activity, and limited mass transfer and conversion of macromolecules.

Active Publication Date: 2013-03-06
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The Y and Beta molecular sieves used in the above invention are mixed as an acidic carrier, and the selectivity to medium oil is good, but the catalyst activity is not high. This is mainly because the Y and Beta molecular sieves used are microporous molecular sieves, and the single micropore aperture limits the Reactant Mass Transfer and Transformation of Macromolecules

Method used

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  • Method for preparing hydrocracking catalyst containing hierarchical pore Beta molecular sieve
  • Method for preparing hydrocracking catalyst containing hierarchical pore Beta molecular sieve
  • Method for preparing hydrocracking catalyst containing hierarchical pore Beta molecular sieve

Examples

Experimental program
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Effect test

Embodiment -1

[0022] 1.0 g NaOH (analytically pure, NaOH ≥ 96wt.%) and 2.1 g NaAlO 2 (chemically pure, Al 2 o 3 , 41%) and 36.9 g TEAOH solution (industrial grade, 25wt%) were mixed evenly, and 102.9 g silica sol (industrial grade, SiO 2 ≥ 30wt.%), continue stirring for 2 h, add 26.7 g of hexadecyltrimethoxyorganosilicon quaternary ammonium salt (TPHAC) ethanol solution with a mass concentration of 10%, mix well to form a gel system, and the feeding of each reactant The molar ratio is: SiO 2 / Al 2 o 3 =60, SiO 2 / Na 2 O=43, SiO 2 / TEAOH=0.12,H 2 O / SiO 2 =3,TPHAC / SiO 2 =0.010, after continuing to stir for 2 h, put the resulting gel mixture into a polytetrafluoroethylene high-pressure reactor and adopt segmental dynamic crystallization, prior to 100 o After crystallization of C for 16 h, then with 10 o C / h heating rate to 155 o C degree, constant temperature crystallization for 72 h; the crystallized product was separated by filtration, and the solid product was washed with deio...

Embodiment -2

[0025] With the 2.1 g NaAlO in the embodiment 1 2 Change to 1.6 g NaAlO 2 , so that the SiO in the feed 2 / Al 2 o 3 The molar ratio is 90, and the remaining components and synthesis operating conditions are the same as in Example 1 to obtain a hierarchically porous H-Beta-II molecular sieve, whose physical and chemical properties are shown in Table-1.

Embodiment -3

[0029] Stir and mix 100 g NaY molecular sieve (Wenzhou) with 1000 g of 3% ammonium nitrate solution at 90 o Stir for 6 h at a constant temperature at C, filter with suction, wash with water three times, 120 o C drying 8 h, 520 o C roasting for 4 h, repeat the exchange operation three times; 550 o C hydrothermal treatment for 2 h, pressure 0.2 MPa; put 60 g of powder after hydrothermal treatment into a three-necked flask, then add 600 mL of 0.2 mol / L citric acid solution, at 90 o After mechanical stirring and reflux at C temperature for 4 h, the mixed turbid liquid was put into a polytetrafluoroethylene autoclave at 160 o After dynamic hydrothermal treatment at C temperature for 12 h, carry out suction filtration and separation, wash with water until neutral, and in 120 o C dried for 12 h to obtain the modified USY-1 molecular sieve. The SiO of gained H-Y molecular sieve 2 / Al 2 o 3 =15.0, the unit cell parameter is 2.438, the pyridine infrared acid content is 0.423 mmol...

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Abstract

The invention relates to a method for preparing a hydrocracking catalyst containing a hierarchical pore Beta molecular sieve. A carrier of the catalyst consists of the hierarchical pore Beta molecular sieve, a modified Y molecular sieve, alumina and amorphous silica-alumina, wherein a hydrogenated active ingredient is an oxide of Ni and W, and an aid is P or F. The catalyst has the characteristics that the modified Y molecular sieve and the hierarchical pore Beta molecular sieve serve as acid components, and has a good synergetic and complementary effect. The hydrocracking catalyst prepared by the method has enriched mesoporous channels and uniform moderately strong acid center distribution, and macromolecule mass transfer and conversion are promoted; and therefore, the catalyst has the advantages of high hydrocracking activity, high nitrogen resistance, high stability, high medium oil selectivity, low diesel oil condensation point and the like.

Description

technical field [0001] The invention relates to the technical field of catalysis. Specifically, it is a method for preparing a hydrocracking catalyst containing hierarchically porous Beta molecular sieves, in particular to a method for preparing a hydrocracking catalyst containing hierarchically porous Beta molecular sieves and Y molecular sieves as an acidic component. technical background [0002] At present, the world's crude oil is becoming increasingly heavy and inferior, and the demand structure of world oil products will develop in the direction of decreasing demand for heavy fuel oil and increasing high-quality middle distillates. In order to solve this contradiction, it is necessary to seek to develop efficient conversion and comprehensive utilization technologies of heavy crude oil. Hydrocracking technology is a comprehensive processing technology that integrates the lightening of heavy oil and the production of clean oil. Hydrocracking technology has the advanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80C10G47/20
Inventor 肖寒杨建国张景成于海滨石芳李孝国李佳
Owner CHINA NAT OFFSHORE OIL CORP
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