Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology is applied in the field of zeolite-containing hydrocracking catalyst and its preparation, which can solve the problems of low heavy naphtha selectivity, different catalyst performance, low catalyst activity and the like, and achieves moderate pore size, Reduced cell constant and high medium oil selectivity

Inactive Publication Date: 2013-04-03
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has low activity, the selectivity of heavy naphtha is not very high, and the hydrogen consumption is also large
[0008] The hydrocracking catalysts in the above-mention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation process of a modified composite molecular sieve is:

[0030] (1) Take 20 grams of NaY molecular sieves and place them in a 500 ml beaker, add 200 ml of ammonium nitrate solution with a mass fraction of 10%, heat up to 90°C under stirring, keep the temperature at a constant temperature for 2 hours, filter, wash, and dry at 110°C 2 hours, and then put it into a muffle furnace to program the temperature to 550° C., roast for 4 hours, repeat the above operation twice, and modify the molecular sieve product, coded as A.

[0031] (2) Get 10 grams of molecular sieve A and place it in a 250 milliliter three-necked bottle, add 100 milliliters of concentration to be 5w% (NH 4 ) 2 SiF 6 The aqueous solution was heated to 90°C under stirring, and kept at a constant temperature for 4 hours. The product was filtered, washed, dried at 110°C for 2 hours and calcined at 550°C for 2 hours to obtain a modified molecular sieve product, coded as B.

[0032](3) Take 20 grams...

Embodiment 2

[0036] (NH in step (2) 4 ) 2 SiF 6 The concentration of the aqueous solution was changed to 8wt%, and the rest of the preparation process was the same as in Example 1.

Embodiment 3

[0038] In step (4), 1mol / L phosphoric acid solution and 1mol / L lanthanum chloride solution are used to impregnate and modify the molecular sieve, wherein the pH of the impregnation solution is adjusted to 6-8, and the rest of the preparation process is the same as in Example 1.

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PUM

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Abstract

The invention relates to a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst consists of hydrogenation active metal and a carrier structured by a modified composite molecular sieve and amorphous aluminium silicate; the hydrogenation active metal is molybdenum and/or tungsten, and/or cobalt, and/or nickel; the molybdenum and/or the tungsten accounts for 15.0-30.0% of the weight of the catalyst as weighed by oxide; the cobalt and/or the nickel accounts for 4.0-8.0% of the weight of the catalyst as weighed by oxide; the balance is the carrier structured by the modified composite molecular sieve and amorphous aluminium silicate; and the modified composite molecular sieve accounts for 10-20% and the amorphous aluminium silicate accounts for 80-90% by metering as the weight of the catalyst. The catalyst has the advantages that the raw materials are cheap and easy to buy; the preparation process is simple and easy to operate and has no generation of poisonous and harmful substances; the adaptability directing at the feature change of the raw materials; and the catalyst is suitable for experiment research on the existing hydrocracking process technology, can effectively solve the laboratory research difficulty and provides a reliable guarantee for the research and implementation of the hydrocracking process technology.

Description

Technical field: [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a zeolite-containing hydrocracking catalyst and a preparation method thereof. Background technique: [0002] In recent years, the demand for clean fuels and high-quality chemical raw materials has been increasing worldwide, and the main characteristics of hydrocracking technology are strong adaptability of raw materials, flexible product solutions, high selectivity of target products, good product quality and high added value, etc. It can directly produce a variety of high-quality petroleum products (such as gasoline, jet fuel, diesel oil, lubricating oil base oil, etc.) and high-quality chemical raw materials (such as raw materials for the production of benzene, toluene, xylene, ethylene, etc.). Therefore, as the quality of crude oil deteriorates year by year and the market demand for high-quality petroleum products, this promotes the rapid developmen...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/20
Inventor 王健曹志涛邵子文王俊艳张晓琳高原任建平石洪波王洪星
Owner PETROCHINA CO LTD
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