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Method for hydrogen cracking

A hydrocracking and solution technology, applied in hydrocarbon oil cracking, petroleum industry and other directions, can solve the problem of small improvement of tail oil properties

Inactive Publication Date: 2003-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After using composite Y and β molecular sieves, although the selectivity of medium oil can be improved to the level of catalyst containing β molecular sieves, the quality of heavy naphtha is also greatly improved, but the properties of tail oil are less improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 166 grams of USY molecular sieve (hydrothermal treatment method, silicon-aluminum molar ratio 5.07, unit cell constant 24.48A, crystallinity 76%, dry basis 70%), 133 grams of SB powder (pore volume 0.46ml / g, specific surface area 260m 2 / g, dry basis 30%) prepared binder, 32.4 gram of molybdenum oxide, 44 gram of nickel nitrate are put into roller compactor, grind to extrudable paste, extrusion, 110 ℃ of drying 4 hours, 500 ℃ of roasting 3 hours hours, catalyst C-1 was prepared.

Embodiment 2

[0018] 107 grams of US-SSY molecular sieve (after the ammonium fluorosilicate aqueous solution is treated with sodium ammonium Y molecular sieve, hydrothermal treatment, silicon-aluminum molar ratio 10.6, unit cell constant 24.37A, crystallinity 90%, dry basis 75%), 133 grams by SB Powder (pore volume 0.46ml / g, specific surface area 260m 2 / g, dry basis 30%) prepared adhesive, 62.8 grams of macroporous alumina powder (pore volume 0.92ml / g, specific surface area 270m 2 / g, dry basis 70%) put into a roller compactor, grind until extrudable paste, extrude, dry at 110°C for 4 hours, bake at 550°C for 3 hours, impregnate with ammonium metatungstate and nickel nitrate aqueous solution, 110°C Drying for 4 hours, followed by calcination at 500°C for 3 hours to prepare catalyst C-2. Catalyst containing WO 3 22.0w%, NiO 6.0w%.

Embodiment 3

[0020] 54.8 grams of NTY molecular sieves (prepared by hydrothermal treatment and acid treatment combination method, silicon-aluminum molar ratio 12.53, unit cell constant 24.38A, crystallinity 96%, dry basis 73%), 133 grams of SB powder (pore volume 0.46ml / g , specific surface area 260m 2 / g, dry basis 30%) prepared adhesive, 42.8 grams of macroporous alumina powder (pore volume 0.92ml / g, specific surface area 270m 2 / g, dry basis 70%), 45 grams of amorphous silicon-alumina are put into the roller compactor, rolled until the paste can be extruded, extruded, dried at 110°C for 4 hours, roasted at 550°C for 3 hours, and ammonium metatungstate, Catalyst C-3 was prepared by impregnating with nickel nitrate aqueous solution, drying at 110°C for 4 hours, and calcining at 500°C for 3 hours. Catalyst containing WO 3 24.5w%, NiO 6.5w%.

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Abstract

The present invention provides a kind of hydrogen cracking method of raising middle oil selectivity and product quality simultaneously. Catalyst containing Y-type molecular sieve and catalyst containing beta-type molecular sieve are filled inside the reactor separately in different layers. Catalyst containing Y-type molecular sieve and catalyst containing beta-type molecular sieve are filled in the upper part and the lower part of the reactor separately; or, catalyst containing Y-type molecular sieve and catalyst containing beta-type molecular sieve are filled in the lower part and the upper part of the reactor separately, so at to make them give their play to raise the quality of oil product.

Description

1. Technical field [0001] The invention relates to a hydrocracking method, especially a method capable of simultaneously improving hydrocracking selectivity and product quality. 2. Background technology [0002] As the market demand for middle distillates continues to increase, refineries are required to produce more middle distillates. At the same time, the concern for the environment in the new century has also produced the concept of clean fuels, and the new fuel oil standards have put forward stricter requirements for indicators such as sulfur and aromatics in gasoline and diesel. Obviously, primary processing methods and FCC technology can no longer meet the market's requirements for clean fuels. The hydrocracking process is not only a secondary processing method to lighten heavy raw materials, but also an important means to obtain high-quality jet fuel and clean diesel from inferior raw materials. In the 1990s, the world's hydrocracking capacity continued to increase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G47/00
Inventor 丁连会胡永康王继锋
Owner CHINA PETROLEUM & CHEM CORP
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