Preparation method for middle oil type hydrocracking catalyst carrier

A catalyst carrier and hydrocracking technology, which is applied in the field of catalysis, can solve the problems of mass transfer and conversion of reactants that limit macromolecules, singleness, and low catalyst activity, and achieve the benefits of secondary cracking reactions, low freezing point, and excellent heterogeneity. The effect of texturing properties

Active Publication Date: 2013-02-06
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The Y and β 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 m

Method used

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  • Preparation method for middle oil type hydrocracking catalyst carrier
  • Preparation method for middle oil type hydrocracking catalyst carrier
  • Preparation method for middle oil type hydrocracking catalyst carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment -1

[0028] 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 H-Y 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 / g...

Embodiment -2

[0030] 0.75 g NaOH (analytically pure, NaOH ≥ 96wt.%) and 1.6 g NaAlO 2 (chemically pure, Al 2 o 3 , 41%) and 27.7 g TEAOH solution (industrial grade, 25wt%) were mixed evenly, and 77.2 g silica sol (industrial grade, SiO 2 ≥ 30wt.%), continue to stir for 2 h, add 20 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 deioniz...

Embodiment -3

[0033] In Example 2, 20 g of mass concentration of hexadecyltrimethoxyorganosilicon quaternary ammonium salt (TPHAC) in ethanol was changed to 16 g of mass concentration of dodecyltrimethoxyorganosilicon quaternary ammonium salt of 10%. Ammonium salt (TPDAC) ethanol solution, molar ratio TPDAC / SiO 2 =0.010, the rest of the components and synthesis operating conditions are the same as in Example 2 to obtain a multi-stage porous H-β-II molecular sieve, whose physical and chemical properties are shown in Table-1.

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Abstract

The invention discloses a preparation method for a middle oil type hydrocracking catalyst carrier. The carrier is composed of a modified Y molecular sieve, a multi-pore beta molecular sieve, large-pore aluminum oxide, a binder and an extrusion assistant agent, wherein the Y molecular sieve is obtained by hydro-thermal treatment assisted by organic acid, high crystallinity and low cell parameter are maintained, and rich secondary pore canals and uniform medium and strong acid centers are contained; the multi-pore beta molecular sieve is synthesized by a soft template method, is high in specific surface area and high in pore volume and has abundant meso pores. The catalyst prepared by VI B and VIII group metal oxides on the hydrocracking catalyst carrier which is prepared by the method has the advantages of high hydrocracking activity, strong anti-nitrogen performance, good stability, high middle oil selectivity, low condensation point of diesel and the like.

Description

technical field [0001] The invention relates to the technical field of catalysis. It is a preparation method of a medium oil type hydrocracking catalyst carrier, in particular to the preparation of a medium oil type hydrocracking catalyst carrier containing Y and multi-level porous β composite molecular sieves. technical background [0002] As the world's petroleum resources become increasingly heavy and inferior, and petroleum fuel products become increasingly high-quality and clean, the development of high-efficiency conversion of heavy crude oil and clean oil production technology has become the top priority of today's petroleum processing industry. Hydrocracking technology is a comprehensive processing technology that integrates the lightening of heavy oil and the production of clean oil. Hydrocracking technology has the advantages of strong raw material adaptability, high product yield, good product quality, and flexible product solutions. The most suitable technology...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J29/80B01J35/10C10G47/16C10G47/20
Inventor 杨建国肖寒张景成于海滨李孝国李佳赵训志
Owner CHINA NAT OFFSHORE OIL CORP
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