Hydrocracking catalyst for moderate oil and preparation thereof

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of removing non-framework aluminum, affecting the distribution of B acid and L acid, and difficult molecular sieve cracking performance, etc. Achieve the effect of increasing the specific surface, promoting the performance of hydrogenation, and improving the ratio of silicon to aluminum

Active Publication Date: 2010-12-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using aluminum salt alone can also partially remove the non-framework aluminum formed after hydrothermal treatment, but because the pH value of the aluminum salt solution is generally between 2 and 3, it is not enough to remove a large amount of non-framework aluminum, so that part of the aluminum in the micropores The difficult-to-remove non-skeleton aluminum remains in the molecular sieve, which causes partial acid centers of the molecular sieve to be masked, and also affects the distribution of B acid and L acid, making it difficult to maximize the cracking performance of the molecular sieve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 2000gNa 2 O content is 2.8wt% (dry basis 70.3wt%) raw material NH 4 NaY, put it into a flask with a reflux device and can be sealed, use 7800ml deionized water to make a slurry, and rapidly heat up to 95°C under stirring conditions, and then dropwise add 453 grams of six in 2 hours at a uniform speed Ammonium fluorosilicate and 3000 ml of deionized water are used to form an aqueous solution. After the addition, the slurry is kept at a constant temperature of 95° C. for 2 hours while stirring. Stop stirring, let it stand for 10 minutes, separate the molecular sieve in the upper part of the flask by decantation, wash and filter with water three times, and dry the filter cake in an oven at 120°C for 5 hours, and the code is SSY-1. The obtained SSY-1 molecular sieve is analyzed by X-ray diffraction (XRD) and plasma emission spectrum, and its unit cell parameter is 2.450nm, relative crystallinity 98%, Na 2 The O content is 0.1 wt%.

Embodiment 2

[0042] Weigh 100g of SSY-1 molecular sieve and put it into a tubular hydrothermal treatment furnace, raise the temperature to 650°C, and treat it at a gauge pressure of 0.1MPa for 1.5 hours, then put it into a closed flask with a reflux device, and add a concentration of 0.6mol / L aluminum sulfate and 0.2mol / L sulfuric acid mixed aqueous solution 800ml, stir at 95°C for 2.0 hours, filter, and wash the filter cake with hot deionized water, stop washing when the pH value of the washing liquid is close to 7. The filter cake was dried in an oven at 120°C for 5 hours. No. LSY-6, the molecular sieve properties are shown in Table 1.

Embodiment 3

[0044] Weigh 100g of SSY-1 molecular sieve and put it into a tubular hydrothermal treatment furnace, raise the temperature to 680°C, treat it for 1 hour at a gauge pressure of 0.1MPa, then put it into a closed flask with a reflux device, add a concentration of 0.9mol / L aluminum sulfate and 0.4mol / L sulfuric acid mixed aqueous solution 1500ml, stir at 95°C for 1.5 hours, filter, and wash the filter cake with hot deionized water, stop washing when the pH value of the washing liquid is close to 7. The filter cake was dried in an oven at 120°C for 5 hours. No. LSY-7, properties of molecular sieves are shown in Table 1

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PUM

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Abstract

The invention discloses a high-activity and high and medium oil type hydrocracking catalyst and a preparation method thereof. The catalyst comprises hydrogenation active metals and a carrier containing modified Y molecular sieves, amorphous silicon aluminum and alumina, wherein the modified Y molecular sieves have high crystallinity, large silicon aluminum ratio and proper total acid amount and acid distribution, and are obtained by treating Y molecular sieves after hydro-thermal treatment by a mixed aqueous solution of aluminum salts and an acid. The hydrocracking catalyst has high activity and good intermediate distillate oil selectivity and product quality, and is particularly suitable for hydrocracking technology for producing intermediate distillate oil.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a high-activity high-medium oil type hydrocracking catalyst and a preparation method thereof. Background technique [0002] With the recovery and development of the world economy, the demand for high-quality middle distillate oil products (that is, the power fuel of the aviation industry: jet fuel, and the main power fuel of the sea and land transportation industry: diesel) has been increasing in the domestic and foreign oil market. Due to the rapid economic development in our country, this demand is even stronger. At the same time, the reserves of oil and gas resources in the world are decreasing year by year, and the quality is deteriorating 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 to produce high-quality middle distilla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08C10G47/16
Inventor 王凤来刘昶杜艳泽关明华
Owner CHINA PETROLEUM & CHEM CORP
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