Preparation method of hydrocracking catalyst

A cracking catalyst and hydrocracking technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of large loss of octane number of gasoline products, reduce hydrogen saturation of gasoline components, and nitrogen resistance. To achieve the effect of reducing reaction hydrogen consumption, reducing hydrogen saturation, and high nitrogen resistance

Active Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method cannot selectively reduce the hydrogenation saturation of gasoline components, so the octane number loss of gasoline products is relatively large
[0005] CN200710158784.0 discloses a hydrocracking catalyst containing Y molecular sieve and its preparation method. In this invention, Y-type molecular sieve is obtained after hydrothermal treatment with a mixed aqueous solution of aluminum salt and acid, and the obtained catalyst has high activity. But nitrogen tolerance is poor
[0006] CN200810012212.6 discloses a hydrocracking catalyst carrier and its preparation method. The hydrocracking catalyst prepared by the invention has high nitrogen tolerance, but the cracking activity is low

Method used

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  • Preparation method of hydrocracking catalyst
  • Preparation method of hydrocracking catalyst
  • Preparation method of hydrocracking catalyst

Examples

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Embodiment 1

[0051] (1) Take Y molecular sieve with a dry basis weight of 300g and dry basis weight of 100g macroporous alumina, mix evenly, add 3g / 100ml dilute nitric acid 200ml, roll and extrude, then dry at 120°C for 4h, and roast at 550°C After 3 hours, the carrier was obtained, and the number was T-1; (2) Mo-Co impregnation solution was prepared: ammonium molybdate and cobalt nitrate were dissolved in water and the impregnation solution was prepared. The active metal in the obtained impregnation solution was MoO 3 and CoO content are calculated as 20g / 100ml and 6g / 100ml respectively, coded as RY-1; take 300g of T-1 and immerse in 600ml RY-1 for 2h, then take out the carrier at room temperature for 2h, dry at 100°C for 4h, and 500°C Roast for 3 hours to obtain a low metal content carrier, numbered CTL-1; (3) Take 300g of CTL-1 and place it in 600ml of n-heptane solvent for immersion for 2 hours, take it out and dry it at 110°C for 5 minutes to obtain CTL-2. The volume content in the ca...

Embodiment 2

[0053] (1) Take Y molecular sieve with a dry basis weight of 200g and dry basis weight of 200g macroporous alumina and mix evenly, add 3g / 100ml dilute nitric acid 200ml for rolling and extrusion, then dry at 120°C for 4 hours, and roast at 550°C After 3 hours, the carrier was obtained, and the number was T-2; (2) Mo-Co impregnation solution was prepared: ammonium molybdate and cobalt nitrate were dissolved in water and the impregnation solution was prepared. The active metal in the obtained impregnation solution was MoO 3 and CoO content are calculated as 18g / 100ml and 5g / 100ml respectively, and the code is RY-3; take 300g of T-2 and soak it in 800ml RY-3 for 2h, then take out the carrier at room temperature for 2h, dry at 100°C for 4h, and 500°C Roast for 3 hours to obtain a low metal content carrier, numbered CTL-3; (3) Take 300g of CTL-3 and place it in 600ml petroleum ether solvent for immersion for 2 hours, take it out and dry it at 90°C for 6 minutes to obtain CTL-4, petr...

Embodiment 3

[0055] (1) Take β molecular sieve with dry basis weight of 250g and dry basis weight of 150g macroporous alumina and mix evenly, add 200ml of 3g / 100ml dilute nitric acid for rolling and extrusion, then dry at 120°C for 4h, and roast at 550°C After 3 hours, the carrier was obtained, and the number was T-3; (2) Mo-Co impregnation solution was prepared: ammonium molybdate and cobalt nitrate were dissolved in water and the impregnation solution was prepared. The active metal in the obtained impregnation solution was MoO 3 and CoO content are calculated as 22.4g / 100ml and 6.7g / 100ml respectively, coded as RY-5; take 300g of T-3 and soak it in 600ml RY-5 for 2h, then take out the carrier and dry it at room temperature for 2h and then dry it at 100℃ for 4h. Calcined at 500°C for 3 hours to obtain a low metal content carrier, numbered CTL-3; (3) Take 300g of CTL-3 and place it in 600ml n-heptane solvent for immersion for 2h, take it out and dry it at 110°C for 5 minutes to obtain CTL-3...

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst, comprising the following contents: 1, selecting the hydrocracking catalyst's carrier material which contains at least an acid cracking material, adding an acid peptizer, moulding, drying and roasting to prepare a hydrocracking catalyst carrier, wherein the acid cracking material contains modified molecular sieve and an amorphous acidic component; 2, preparing an Mo-Co active metallic salt solution, carrying out saturated impregnation on the carrier, drying, and roasting; 3, carrying out saturated impregnation on the roasted carrier by the use of a water-insoluble organic solvent, and drying; and 4, preparing an Mo-Ni or W-Ni active metallic salt solution, carrying out unsaturated impregnation on the dried carrier, drying, and roasting to obtain the hydrocracking catalyst. The hydrocracking catalyst prepared by the above method can carry out selective hydrogenation on a gasoline fraction and catalytic diesel oil in a cracked product, and the catalyst has high activity and high nitrogen tolerance. Therefore, long-term stable operation of a catalytic diesel oil hydro-conversion device under the condition of low hydrogen consumption is guaranteed.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, in particular to a method for preparing a hydrocracking catalyst. Background technique [0002] Since the beginning of the new century, with the increasing awareness of environmental protection, the stricter national environmental protection regulations and the rapid development of the national economy, the demand for clean motor fuels has been increasing all over the world. Catalytic cracking (FCC) technology is one of the main technological means for lightening heavy oil, and it occupies a relatively important position in oil refining enterprises all over the world. The annual processing capacity of catalytic cracking units in my country has exceeded 100 million tons, second only to the United States. In the composition of gasoline and diesel products, catalytic cracking gasoline accounts for about 80%, and catalytic diesel oil accounts for about 30%. In recent years, with the increasingly...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J29/78C10G47/20
Inventor 柳伟杜艳泽秦波张晓萍阮彩安王阔
Owner CHINA PETROLEUM & CHEM CORP
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