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Hydrocracking catalyst carrier and preparation method thereof

A catalyst carrier, hydrocracking technology, applied in the direction of catalyst carrier, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problem of removing non-framework aluminum, affecting the distribution of B acid and L acid, difficult molecular sieve cracking performance, etc. The effect of increasing the specific surface area, promoting the hydrogenation performance and easy diffusion

Active Publication Date: 2010-01-06
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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  • Hydrocracking catalyst carrier and preparation method thereof
  • Hydrocracking catalyst carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take 2000gNa 2 O content is the raw material NH4NaY of 2.8wt% (70.3wt% on a dry basis), puts into the flask that has reflux device and can be closed, makes a slurry with 7800ml deionized water, and is warming up to 95 ℃ rapidly under the condition of stirring, then Add dropwise an aqueous solution composed of 453 g of ammonium hexafluorosilicate and 3000 ml of deionized water within 2 hours at a uniform speed, and keep the slurry at 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

[0041] 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

[0043] 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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Abstract

The invention discloses a hydrocracking catalyst carrier and a preparation method thereof. The catalyst carrier comprises a modified Y-type molecular sieve, amorphous silica-alumina and alumina, wherein the modified Y-type molecular sieve is Y-type molecular sieve treated by mixed aqueous solution of an aluminum salt and an acid and by hydrothermal process. In the carrier, the modified Y-type molecular sieve has a high crystallinity, high silicon to aluminum ratio and proper total acidity and acid distribution and can form an acid component with the amorphous silica-alumina. Therefore, the carrier is particularly suitable for serving as a hydrocracking catalyst carrier to improve the activity of a hydrocracking catalyst and the selectivity of middle distillates.

Description

technical field [0001] The invention relates to a catalyst carrier and a preparation method thereof, which is particularly suitable as a hydrocracking catalyst carrier. Background technique [0002] The carrier is an important part of the catalyst. It not only provides a place for the metal active components to disperse, but also participates in the reaction itself, and completes the entire catalytic reaction together with other active components. Existing hydrogenation catalyst supports generally contain molecular sieves, alumina, and other refractory oxides, and are generally used in processes such as hydrocracking of heavy oil, hydrogenation of distillate oil to remove impurities, and hydrogenation of inferior diesel oil. [0003] 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: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J29/08
Inventor 刘昶王凤来杜艳泽关明华
Owner CHINA PETROLEUM & CHEM CORP
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