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Medium oil type hydrocracking catalyst

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, hydrocarbon oil cracking, etc., can solve the problems of poor raw material stability and poor oil selectivity in catalysts, and achieve concentrated acid distribution, high and medium oil selectivity, The effect of less number of acid centers

Inactive Publication Date: 2004-06-30
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] US5,954,946 discloses a hydrocracking catalyst with a modified Y molecular sieve with a silicon-aluminum ratio of 20 as an acidic component. When the catalyst is above 370°C and the conversion rate is 70%, the medium oil yield is 49%, which shows that the invention catalyst Medium oil selectivity is poor
[0006] US5,925,235 discloses an acidic hydrocracking catalyst with a modified Y molecular sieve with a silicon-aluminum ratio of 35, which is used in the second layer of the cracking section, while the first layer is acidic with a modified Y molecular sieve with a silicon-aluminum ratio of 5.5 The hydrocracking catalyst, with this combination can produce jet fuel in a large amount, which shows that this high silicon aluminum ratio molecular sieve catalyst is directly used for heavier raw materials and has poor stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 500 grams of SiO 2 / Al 2 o 3 =5.0, unit cell constant is 2.463nm, Na 2 Industrially produced NaY zeolite with an O content of 9w%, with 5000ml of 10% NH 4 NO 3 The aqueous solution was exchanged at 90°C for 1 hour, and then 5000ml of oxalic acid with a pH value of 2 and NH 4 NO 3 The mixed solution was exchanged twice, and then the first hydrothermal treatment was carried out at 0.098MPa and 550°C for 2 hours; and then 10% NH 4 NO 3 Aqueous solution is exchanged to Na 2 O%3 The aqueous solution was exchanged, washed with water, and dried at 120°C for 4 hours to obtain Zeolite A.

Embodiment 2

[0033] The temperature of the second hydrothermal treatment was 550° C., and other preparation conditions were the same as in Example 1 to obtain zeolite B of the present invention.

Embodiment 3

[0035] The second hydrothermal treatment temperature was 700 °C, and then 0.6N HNO 3 The aqueous solution was exchanged, and other preparation processes were the same as in Example 1 to obtain zeolite C of the present invention.

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PUM

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Abstract

The invention discloses a medium-oil-type hydrocracking catalyst to furthest produce medium fractional oil. It disperses a Y-shaped zeolite in unformed SiO2-Al2O3 base material as catalyst carrier. It contains 5w%-25w% Y-shaped zeolite in which SiO2 / Al2O3 mol ratio is 40-60, 20w%-50w% unformed SiO2-Al2O3, 15w%-30w% bonding agent, 10w%-30w% VIB-family metal, and 4w%-10w% VIII-family metal, the atomic ratio of VIB / (VIB+VIII) equal to 0.3-0.8.

Description

technical field [0001] The invention relates to a medium-oil hydrocracking catalyst, more specifically a high-medium oil hydrocracking catalyst containing Y zeolite with a high silicon-aluminum ratio. Background technique [0002] As the demand for middle distillates in the international oil market continues to increase, it is expected that by 2005 the proportion of gasoline production worldwide will drop from 43% in 1985 to 40%, while diesel will rise from 33% to 39%. At the same time, the demand for middle distillate oil has changed from furnace fuel oil to jet fuel and diesel engine fuel, which requires more middle distillate oil to be obtained from heavy oil, and the hydrocracking process is the key to lightening heavy oil One of the important means. Because the process has the characteristics of strong raw material adaptability, good product quality, flexible adjustment operation, high yield of middle distillate products, and flexible product structure, the status of h...

Claims

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Application Information

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IPC IPC(8): B01J29/08C10G47/18
Inventor 樊宏飞关明华孙晓燕赵崇庆阮彩安王洪亮
Owner CHINA PETROLEUM & CHEM CORP
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