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Hydrocracking catalyst containing compound molecular sieve and preparing method thereof

A composite molecular sieve and hydrocracking technology, applied in the field of hydrocracking catalysts and their preparation, can solve the problems of harsh operating conditions, difficult and accurate control, etc., and achieve the effects of less material loss, good product quality, and improved hydrocracking activity

Inactive Publication Date: 2005-07-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This titanium component is TiCl 4 way to join, since the TiCl 4 Volatility, its amount is difficult to control accurately, and the operating conditions are harsh

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Catalyst A is the catalyst prepared by the inventive method

[0024] The catalyst composition is: WO 3 22.0%, NiO 9.0%, ZrO 2 7%, SiO 2 29%, Al 2 o 3 29%, P 2 o 5 4%, the specific surface is 270m 2 / g, the pore volume is 0.30ml / g.

[0025] Concrete preparation steps are as follows:

[0026] (1) Prepare Al-containing 2 o 3 900 ml of aluminum chloride solution with a concentration of 90 g / l containing NiO 200 ml of nickel chloride solution of 140 g / l with ZrO 2 150ml of 140g / l zirconium oxychloride solution was mixed in a 5 liter container and diluted with 2000ml of clean water.

[0027] (2) Prepare dilute water glass solution, containing SiO 2 750 milliliters of water glass solution of 75g / l, (2) is added in (1) under stirring situation;

[0028] (3) Add ammonia water to the mixture of (1) and (2) under stirring until the pH value is 5.2;

[0029] (4) Prepare 1000 ml of sodium tungstate solution, containing WO 3 85g / l and added to the mixture of (1)+(2)...

example 2

[0037] It is the hydrocracking catalyst B of the present invention, and the preparation method is the same as that of Example 1, except that the amount of composite molecular sieve prepared by the present invention is 8% before aging. The weight ratio of Y and SAPO-11 in the composite molecular sieve is 1:4, and the main property of the Y molecular sieve is SiO 2 / Al 2 o 3 The molar ratio is 14, and the unit cell parameter is 24.40×10 -10 m, crystallinity 100%, specific surface area 860m 2 / g; The main property of SAPO molecular sieve is SiO 2 / Al 2 o 3 / P 2 o 5 Molar ratio 1:1.2:1.1, specific surface area 250m 2 / g, pore volume 0.40ml / g, infrared acidity 0.39mmol / g. The catalyst composition is: WO 3 21.0%, NiO 7.5%, ZrO 2 6.5% SiO 2 28%, Al 2 o 3 33%, P 2 o 5 4%, the specific surface is 250m 2 / g, the pore volume is 0.29ml / g.

example 3

[0039] It is the hydrocracking catalyst C of the present invention, and the preparation method is the same as that of Example 1. Except that the amount of composite molecular sieve prepared by the present invention added before aging is 12%. The weight ratio of Y and SAPO-31 in the composite molecular sieve is 1:3, and the main property of the Y molecular sieve is SiO 2 / Al 2 o 3 The molar ratio is 15, and the unit cell parameter is 24.35×10 -10 m, crystallinity 98%, specific surface area 950m 2 / g; The main property of SAPO molecular sieve is SiO 2 / Al 2 o 3 / P 2 o 5 Molar ratio 1:1.1:1, specific surface area 300m 2 / g, pore volume 0.34ml / g, infrared acidity 0.30mmol / g. The catalyst composition is: WO 3 23.6%, NiO 7.4%, ZrO 2 7% SiO 2 29.5%, Al 2 o 3 29.5%, P 2 o 5 3%, the specific surface is 270m 2 / g, the pore volume is 0.31ml / g.

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Abstract

The present invention relates to a hydrocracking catalyst containing compound molecular sieve and its preparation method. Said catalyst composition uses amorphous aluminosilicate and a compound molecular sieve as carrier, in which the amorphous aluminosilicate content is 30-60% of catalyst weight, compound molecular sieve content is 1-20% of catalyst weight, and is the mixture of modified Y molecular sieve and SAPO molecular sieve, VIB group metal oxide content is 10-40%, VIII group metal oxide content is 1-20% of IVB group metal oxide content is 1-10%. Said invented catalyst is prepared by adopting co-precipitation method, and its strength and performance can be raised and improved.

Description

1. Technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst containing composite molecular sieves and a preparation method thereof. 2. Background technology [0002] At present, the shortage of oil resources in the world, crude oil becomes heavier and worse, the demand for middle distillates increases, the upgrading of petrochemical products and the stricter environmental regulations all greatly promote the lightening of heavy oil, and constitute the accelerated development of hydrogenation. Powerful driving force of technology, hydrocracking is an effective means to increase the production of middle distillate oil. With atmospheric and vacuum distillate oil, vacuum distillate oil and secondary processed light oil as raw materials, high-quality diesel oil and jet fuel can be produced after hydrocracking , and the product has great flexibility and good product quality. [0003] Hydroc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/20
Inventor 徐学军周长兴赵崇庆刘东香冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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