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Hydrocracking catalyst carrier and preparation method thereof

A catalyst carrier and hydrocracking technology, which is applied in the direction of catalyst carrier, physical/chemical process catalyst, molecular sieve catalyst, etc., and can solve the problems of high reactivity, environmental pollution, and unsatisfactory medium oil selectivity, etc.

Active Publication Date: 2014-12-24
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst carrier is loaded with metal components and applied to the hydrocracking process. The reaction activity is high, the selectivity of medium oil is not ideal, and fluorine-containing sewage is produced during the production of modified Y molecular sieve, which pollutes the environment and is not conducive to environmental protection.

Method used

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  • Hydrocracking catalyst carrier and preparation method thereof
  • Hydrocracking catalyst carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1, the preparation of deep dealumination Y zeolite A

[0038] ①Take 250 grams of NH 4 NaY zeolite (produced by Wenzhou Catalyst Factory, SiO 2 / Al 2 o 3 Molar ratio is 5.1, unit cell constant a 0 =2.470nm, crystallinity is 95%, Na 2 O is 2.3w%, dry basis is 70w%) placed in a heat treatment furnace, control the heating rate of 500 ℃ / hour, raise the temperature to 600 ℃, while maintaining the water vapor pressure of the system at 0.15MPa, treat for 2.0 hours, cool down , take out the sample.

[0039] ② with NH 4 + and H + 1500mL of solutions (mixed aqueous solution of ammonium chloride and hydrochloric acid) with a concentration of 2.0mol / L and 0.2mol / L were contacted with the sample and stirred to maintain the temperature of the slurry at 90°C for 1.5 hours. Repeat the treatment once under the same conditions, filter wash the cake with water;

[0040] ③Place the wet filter cake in a heat treatment furnace, raise the temperature to 650°C, control th...

Embodiment 2

[0042] Embodiment 2, the preparation of deep dealumination Y zeolite B

[0043] ① Put 2kg NH 4 NaY zeolite (physical and chemical parameters are the same as in Example 1) is placed in a heat treatment furnace, the temperature is raised to 630 °C within 2 hours, water vapor is injected (the steam rate is 3.0kg / h), and the system pressure is kept at 0.1MPa. Keep the temperature at ℃ for 3.5 hours, cool down, and take out the sample;

[0044] ② Add 15kg of water to the autoclave, industrial NH 4 NO 3 2.4kg, HNO 3 0.2kg and the zeolite sample after the first heat treatment (in the mixed solution, NH 4 + and H + The concentrations are 1.2mol / L and 0.25mol / L respectively), sealed, started stirring, raised the temperature to 120°C, treated at constant temperature for 1 hour, treated the filter cake once more under the same conditions, filtered off the mother liquor, and dried until the filter cake contained Water volume≯25%.

[0045] ③ The sample is placed in a heat treatment...

Embodiment 3

[0047] Embodiment 3, the preparation of deep dealumination Y zeolite C

[0048] ①300g NH 4 NaY zeolite (physical and chemical parameters are the same as in Example 1) was placed in a heat treatment furnace, and the temperature was raised to 560°C in 1 hour, the pressure was maintained at 0.1 MPa by the zeolite's own water vapor, the temperature was kept constant for 3 hours, the temperature was lowered, and the zeolite sample was taken out.

[0049] ② with NH 4 + and H + The concentration of 2.0mol / L and 0.15mol / L solution (ammonium nitrate and nitric acid mixed solution) 200mL contacted with the sample and stirred, the temperature was raised to 90 ℃, and maintained for 2 hours, repeated twice, the filter cake was cleaned Wash with water and dry.

[0050] ③The zeolite sample is placed in the heat treatment furnace, and the temperature is raised to 680°C in 1.5 hours, and 300g / h of water vapor is introduced at the same time, the pressure of the control system is at 0.1±0.02...

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Abstract

The invention discloses a hydrocracking catalyst carrier and a preparation method of the hydrocracking catalyst carrier. The hydrocracking catalyst carrier is prepared by using modified Y zeolite, aluminum oxide and amorphous silicon-aluminum. The modified Y zeolite has the following physiochemical properties: the mole ratio of SiO2 to Al2O3 is 30-120; the lattice constant is 2.420-2.435nm; the relative crystallinity is more than or equal to 90%; the specific surface area is 750-850m<2> / g; the secondary pore with 1.7-10nm accounts for more than 50% of the total pore volume; the infrared acidity is 0.10-0.50mmol / g; the ion exchange capacity is less than or equal to 0.10%; and the water adsorption quantity is less than 5.0% in percentage by weight at 25 DEG C and P / P0 of 1.0. The preparation method of the catalyst carrier provided by the invention comprises the following steps: mechanically mixing the modified Y zeolite, aluminum oxide, amorphous silicon-aluminum and adhesive, grinding, extrusion-moulding, drying and calcining to obtain the catalyst carrier. The catalyst carrier prepared by using the modified (deeply dealuminated) Y zeolite as the acidic cracking component is suitable to be used as the hydrocracking catalyst for middle distillates oil.

Description

technical field [0001] The invention relates to a medium oil type hydrocracking catalyst carrier and a preparation method thereof. Background technique [0002] Hydrocracking is a conversion process in which heavy feed oil undergoes hydrogenation, desulfurization, denitrogenation, structural rearrangement and cracking of hydrocarbon molecules in the presence of high temperature and high pressure hydrogen and catalysts. Hydrocracking technology is an effective means to make full use of petroleum resources, improve the quality of petroleum products, ensure green energy and meet the needs of the energy market. The core of hydrocracking technology is hydrocracking catalyst. People have been working on modifying the acidic component or matrix to adjust the physical and chemical properties of the carrier to meet the needs of the catalyst in the hydrocracking process. [0003] US4,894,142 discloses a hydrocracking catalyst containing amorphous silica-alumina and a Y-type molecula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J29/08C01B39/24
Inventor 齐邦峰刘丽芝陈淳吴晶晶
Owner CHINA NAT OFFSHORE OIL CORP
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