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Preparation method of hydrocracking catalyst

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low selectivity of middle distillates

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Beta molecular sieves are not hydrothermally treated or hydrothermally treated at relatively low temperatures, the molar ratio of silica to alumina is less than 30:1 and at least 28 wt% SF 6 Adsorption capacity, the β molecular sieve obtained by modification is used as a catalyst prepared by cracking components, and the selectivity of middle distillates is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Preparation of amorphous silicon-aluminum precursor

[0054] Prepare solid aluminum sulfate to 100mL concentration to be 80g A1 2 o 3 / L aluminum sulfate working solution (a). Dilute the concentrated ammonia water with an appropriate amount of distilled water to obtain about 10wt% dilute ammonia water (b). Take SiO 2 Mass meter 28wt% sodium silicate solution, then diluted to 80mL concentration is 150g SiO 2 / L sodium silicate working solution (c). Take a 5-liter steel reaction tank, add 0.2 liter of distilled water into the reaction tank, stir and heat to 70°C, open the valves of the containers (a), (b) and (c) at the same time, control (a) and The flow rate of (c) is to keep the neutralization reaction time within 40 minutes, and the flow rate of (b) is adjusted quickly to keep the pH value of the system at 7-8, and the temperature of the system is controlled at about 60°C. After the aluminum sulfate reaction is completed, stop adding (b), and the amount of (c...

Embodiment 2

[0062] (1) Preparation of amorphous silicon-aluminum precursor

[0063] Prepare solid aluminum chloride to make 100mL concentration be 100g A1 2 o 3 / L aluminum chloride working solution (a). Dilute the concentrated ammonia water with an appropriate amount of distilled water to obtain about 10wt% dilute ammonia water (b). Take SiO 2 Mass meter 28wt% sodium silicate solution, then diluted to 100mL concentration is 100g SiO 2 / L sodium silicate working solution (c). Take a 2-liter steel reaction tank, add 0.3 liter of distilled water into the reaction tank, stir and heat to 70°C, open the valves of the containers (a), (b) and (c) at the same time, control (a) and The flow rate of (c) is to keep the neutralization reaction time within 40 minutes, and the flow rate of (b) is adjusted quickly to keep the pH value of the system at 7-8, and the temperature of the system is controlled at about 60°C. After the aluminum chloride reaction is completed, stop adding (b), and the amo...

Embodiment 3

[0071] (1) Preparation of amorphous silicon-aluminum precursor.

[0072] The solid aluminum chloride is prepared into 120mL concentration and is 100g A1 2 o 3 / L aluminum chloride working solution (a). Dilute the concentrated ammonia water with an appropriate amount of distilled water to obtain about 10wt% dilute ammonia water (b). Take SiO 2 Mass meter 28wt% sodium silicate solution, then diluted to 100mL concentration is 80g SiO 2 / L sodium silicate working solution (c). Take a 2-liter steel reaction tank, add 0.3 liters of distilled water to the reaction tank, open the valve of the container containing (a), add (a) into the reaction tank and stir, and then open the container of (c) Valve, add 40ml of (c) into the reaction tank in about 30 minutes, after heating to 70°C, open the valve of the container containing (b), control the flow of (b) so that the neutralization reaction time is 40 minutes, when the system When the pH value reaches about 7~8, close the valve, an...

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PUM

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst. The preparation method includes the steps of preparing a supporter and supporting a hydrogenation active metal component, wherein the supporter is prepared by knead-moulding a [beta] molecular sieve, a SBA-15 molecular sieve, amorphous silica alumina, and a binder. The [beta] molecular sieve is prepared through the steps of: preparing an amorphous silica alumina precursor through a specific acid-alkali precipitation method, adding water, a silicon source and a template agent to prepare silicon aluminum gel; and performing two-step dynamic crystallization, and performing ammonium salt exchange and template agent removal to prepare the [beta] molecular sieve. The hydrocracking catalyst is prepared with the [beta] molecular sieve and the SBA-15 molecular sieve which are high in crystallization degree, high in silicon aluminum ratio and good in stability, so that the catalyst is good in activity, high in medium oil selectivity and good in product quality.

Description

technical field [0001] The invention relates to a preparation method of a hydrocracking catalyst, in particular, β molecular sieve and SBA-15 molecular sieve are used as main cracking components, which is suitable for the hydrocracking process of producing high-quality middle distillate oil and concurrently producing tail oil. Background technique [0002] With the development of the fuel oil market and increasingly stringent environmental protection regulations, countries are demanding higher and higher quality environmentally friendly products, and major petrochemical companies have increased investment in the development of heavy oil conversion processes. Hydrocracking technology is the main process technology for producing low-sulfur content and high-quality middle distillate oil. [0003] The core of hydrocracking technology is hydrocracking catalyst, and its technical progress depends on the improvement of catalyst level. Molecular sieve, as the main acidic component o...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/20
Inventor 孙晓艳樊宏飞王继锋于政敏
Owner CHINA PETROLEUM & CHEM CORP
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