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Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as low catalyst activity, adverse effects on product quality, and insignificant improvement of oil selectivity in catalysts, etc., to achieve Effects of reduced coke yield, good cracking activity and product selectivity, and high proportion of mesopores

Active Publication Date: 2017-11-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively low acidity of the molecular sieve, the activity of the catalyst is too low, which requires an increase in the hydrocracking reaction temperature. The thermal cracking tendency of the molecular sieve is enhanced, but the hydrogenation reaction is inhibited, so that the catalyst's medium oil selectivity is not significantly improved. quality also suffers badly

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Take 278g of NaY original powder and put it into 800mL purified water, raise the temperature to 95℃, and start to add dropwise to the molecular sieve slurry (NH 4 ) 2 SiF 6 Aqueous solution, 307mL solution concentration of 72g / L (NH 4 ) 2 SiF 6 The solution is stirred for 2 hours at a constant temperature after the completion of the dripping. After the completion of the constant temperature, it is filtered and dried. The dry basis of the molecular sieve after drying is 65.3wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device at a gauge pressure of 0.25MPa and temperature Hydrothermal treatment of molecular sieve at 610℃ and 1.0 hour treatment time; take 130g of the molecular sieve after hydrothermal treatment and put it into 520mL 5.3% tetraethylammonium hydroxide aqueous solution, and stir at 80℃ for 4 hours. , Then transfer the mixture to the crystallization kettle for hydrothermal crystallization, the crystallization temperature i...

Embodiment 2

[0048] Take 278g of NaY original powder and put it into 800mL purified water, raise the temperature to 100℃, and start to add dropwise to the molecular sieve slurry (NH 4 ) 2 SiF 6 Aqueous solution, evenly drop 182mL solution concentration of 55g / L (NH 4 ) 2 SiF 6 The solution is stirred at constant temperature for 2 hours after the completion of the dripping. After the completion of the constant temperature, it is filtered and dried. The dry basis of the molecular sieve after drying is 68.0wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device at a gauge pressure of 0.30MPa and temperature Hydrothermal treatment of the molecular sieve at 670℃ and a treatment time of 2.0 hours; take 130g of the molecular sieve after hydrothermal treatment and put it into 910mL tetrapropylammonium hydroxide aqueous solution with a mass concentration of 7.5%, and stir at 90℃ for 4 hours. , Then transfer the mixture to the crystallization kettle for hydrothermal...

Embodiment 3

[0050] Take 278g of NaY raw powder and put it into 1000mL purified water, raise the temperature to 100℃, and start to add dropwise to the molecular sieve slurry (NH 4 ) 2 SiF 6 Aqueous solution, uniformly drop 417mL solution concentration of 85g / L (NH 4 ) 2 SiF 6 The solution is stirred at constant temperature for 3 hours after the dripping is completed, and filtered and dried after the constant temperature is completed. After drying, the dry basis of the molecular sieve is 67.2wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device at a gauge pressure of 0.35MPa and temperature The molecular sieve is hydrothermally treated at 700℃ and the treatment time is 3.0 hours; 130g of the molecular sieve after the hydrothermal treatment is put into 1040mL tetraethylammonium hydroxide aqueous solution with a mass concentration of 3.5%, and stirred at 85℃ for 3 hours. , Then transfer the mixture to the crystallization kettle for hydrothermal crystallizat...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst comprises hydrogenation active metal components and a carrier, wherein the carrier comprises a modified Y-type molecular sieve and amorphous silica-alumina; the properties of the modified Y-type molecular sieve are as follows: the relative crystallinity is 110-150%, the molar ratio of SiO2 / Al2O3 is 55-100, the cell parameter is 2.425-2.435nm, the total pore volume is 0.55-1.0mL / g, and the volume of mesopores accounts for 70% or above of the total pore volume. The catalyst is suitable for being used as a middle distillate hydrocracking catalyst and has relatively high activity and selectivity of middle distillate; meanwhile, the quality of the produced middle distillate is high.

Description

Technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst used for hydrocracking to produce high-quality middle distillate oil and a preparation method thereof. Background technique [0002] With the recovery and development of the world economy, the demand for high-quality middle distillate products (that is, jet fuel, the power fuel for aviation industry, and diesel fuel, the main power fuel for marine and land transportation: diesel) in the oil market of all countries, has been increasing. At the same time, the world's reserves of oil and gas resources are decreasing year by year, and the quality is getting worse year by year, and the requirements for the quality of refined oil are getting higher and higher. Therefore, hydrocracking technology has become the best refining technology for producing high-quality middle distillates with its unique technical advantages. [0003] The hydrocrack...

Claims

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Application Information

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IPC IPC(8): B01J29/16C10G47/20
CPCB01J29/166B01J2229/24B01J2229/32C10G47/20C10G2300/70
Inventor 刘昶王凤来关明华杜艳泽黄薇赵红郝文月曹均丰
Owner CHINA PETROLEUM & CHEM CORP
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