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Hydrocracking catalyst containing mesoporous-microporous molecular sieve and preparation method of catalyst

The technology of microporous molecular sieve and mesoporous molecular sieve is applied in the field of hydrocracking catalyst and its preparation, which can solve the problem of low quality of tail oil, and achieve the effects of low BMCI value, high activity and high selectivity of tail oil.

Active Publication Date: 2013-09-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the tail oil quality is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolve 925g of water glass and 230g of sodium hydroxide in water, and stir. Weigh about 180g of aluminum sulfate octadecahydrate crystals, dissolve it in 400mL of water, and add it to the flask. Stir for 40 minutes. Put it in a 60°C water bath and age for 12 hours.

[0035] Weigh about 200g of P123 and dissolve it in 7500mL of water. Stir in a water bath at 25°C. Add 30 mL of 6 mol / L sulfuric acid solution, adjust the pH to about 1.5, and continue stirring.

[0036] Weigh about 1500g of aging solution, add 30ml of 6mol / L sulfuric acid solution, and assemble for 20 hours. Move to a Teflon-lined crystallization kettle, crystallize at 120°C for 24 hours, wash and filter, and dry at 80°C for 5 hours. Baking at 550°C for 4 hours. The number is MEY-1.

Embodiment 2

[0038] Dissolve 500g of sodium silicate and 200g of sodium hydroxide in water and stir. Weigh about 100g of sodium metaaluminate, dissolve it in 400mL of water, and add it to the flask. Stir for 40 minutes. Put it in a 90°C water bath and age for 10 hours.

[0039] Weigh about 300g of P123 and dissolve it in 7500mL of water. Stir in a water bath at 25°C. Add 30 mL of 6 mol / L sulfuric acid solution, adjust the pH to about 1.5, and continue stirring.

[0040] Weigh about 1000g of aging solution, add 20ml of 6mol / L sulfuric acid solution, and assemble for 20 hours. Move to a Teflon-lined crystallization kettle, crystallize at 120°C for 24 hours, wash and filter, and dry at 80°C for 5 hours. Baking at 550°C for 4 hours. The number is MEY-2.

[0041] The properties of the mesoporous molecular sieves synthesized in Example 1 and Example 2 are shown in Table 1.

Embodiment 3

[0043] 102g MEY-1 molecular sieve (dry basis 98.3wt%), 83.5g macroporous alumina (pore volume 1.20ml / g, specific surface 267.8m 2 / g, dry basis 71.85wt%), 160 grams of binding agent (dry basis 25wt%, the mass ratio of nitric acid and small-pore alumina is 15%) and 4g safflower powder add in the roller compactor and mix and grind, add water, grind Press into a paste, extrude into strips, dry at 120°C for 4 hours after extrusion, and then bake in a muffle furnace at 550°C for 4h to obtain a carrier.

[0044] Weigh 50 g of the prepared carrier, prepare a certain amount of impregnation solution containing tungsten and nickel, and impregnate with equal volume. Precipitate for 2 hours, dry at 120°C for 4 hours, and then calcinate in a muffle furnace at 550°C for 4 hours to obtain catalyst C1.

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Abstract

The invention relates to a preparation method of a hydrocracking catalyst containing a mesoporous-microporous molecular sieve. The hydrocracking catalyst comprises hydrogenation active metal, the mesoporous-microporous molecular sieve, aluminium oxide and amorphous silicon aluminum. The preparation method of the mesoporous-microporous molecular sieve comprises the steps of synthesizing a Y zeolite precursor by taking a common silicon source and aluminium source as raw materials, and adding a template agent to the precursor for assembling to obtain the molecular sieve with a mesoporous-microporous structure. The mesoporous-microporous molecular sieve has the properties of having the specific surface of 400-600 m<2> / g, the total pore volume of 0.6-1.0 ml / g, the relative crystallinity of 90%-110%, the crystal cell parameter of 11.5nm-14.0nm, the silica-alumina ratio of 30-100, the infrared acid content of 0.2-0.8 mmol / g and the sodium oxide content of less than or equal to 0.05wt%. The hydrocracking catalyst prepared by the method has the characteristics of being high in activity, good in selectivity of target products, high in production and quality of tail oil, etc.

Description

technical field [0001] The invention relates to a hydrocracking catalyst containing meso-microporous molecular sieves and a preparation method thereof, in particular to a hydrocracking catalyst capable of producing high tail oil and a preparation method thereof. Background technique [0002] Hydrocracking is one of the effective methods for lightening heavy oil, which has the characteristics of strong adaptability of raw materials, flexible products and high quality, so it has developed rapidly in recent years. Due to its high saturated hydrocarbon content, low BMCI value and low sulfur and nitrogen content, hydrocracking tail oil is a high-quality raw material for steam cracking to produce ethylene and isomerization dewaxing to produce high viscosity index lubricating base oil. With the shortage of raw materials for ethylene cracking in my country and the increasing demand for high-grade lubricating oil, the largest and most productive tail oil has become an advantageous pr...

Claims

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Application Information

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IPC IPC(8): B01J29/16C10G47/20
Inventor 袁晓亮兰玲胡胜谭青峰刘洪涛王书芹何皓张鹏吴平易赵秦峰王鹏
Owner PETROCHINA CO LTD
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