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Preparation method of hydrocracking catalyst and hydrocracking method for inferior/heavy diesel fuel

A hydrocracking and catalyst technology, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of insignificant catalyst activity and improve W The degree of sulfuration, the effect of improving the quality of diesel oil and the performance of strong hydrogenation

Inactive Publication Date: 2019-11-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst prepared by this method is not sensitive to the reaction temperature, and the effect of increasing the activity of the catalyst by raising the temperature at the end is not obvious

Method used

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  • Preparation method of hydrocracking catalyst and hydrocracking method for inferior/heavy diesel fuel
  • Preparation method of hydrocracking catalyst and hydrocracking method for inferior/heavy diesel fuel
  • Preparation method of hydrocracking catalyst and hydrocracking method for inferior/heavy diesel fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) The commercially available NaY molecular sieve (silicon-aluminum ratio 4.2:1, Na 2 The O content is 12.5wt%, the packet constant is 2.468nm, and the relative crystallinity is 96%) mixed with ammonium chloride solution whose concentration is 0.5mol / L, the liquid-solid weight ratio is 10:1, the temperature is raised to 85°C, and ionization is carried out under stirring. Exchange for 1.0 hour, filter off the mother liquor, repeat washing with water 3 times, and filter with suction. Repeat the above process once, filter and wash to obtain NH 4 Y molecular sieve.

[0041] (2) NH in step (1) 4 Y molecular sieves are treated under hydrothermal conditions. The hydrothermal treatment temperature is 550°C, the hydrothermal treatment time is 1.0 hour, the hydrothermal treatment pressure is 0.1MPa, and the water injection rate is 100ml / h to obtain a primary hydrothermally modified Y molecular sieve.

[0042] (3) Prepare a deionized aqueous solution with an acid molar concen...

Embodiment 2

[0045] (1) The commercially available NaY molecular sieve (silicon-aluminum ratio 4.2:1, Na 2 O content 12.5wt%, crystal bag constant 2.468nm, relative crystallinity 96%) is mixed with the ammonium chloride solution that concentration is 1.0mol / L, and the liquid-solid weight ratio is 20:1, is heated up to 95 ℃, carries out ionization under stirring Exchange for 2.0 hours, filter off the mother liquor, repeat washing with water 3 times, and filter with suction. Repeat the above process 3 times, filter and wash to obtain NH 4 Y molecular sieve.

[0046] (2) NH in step (1) 4 Y molecular sieves are treated under hydrothermal conditions. The hydrothermal treatment temperature is 650°C, the hydrothermal treatment time is 2.0 hours, the hydrothermal treatment pressure is 0.3MPa, and the water injection rate is 400ml / h. A hydrothermally modified Y molecular sieve was obtained.

[0047] (3) Prepare a deionized aqueous solution with an acid molar concentration of 0.1mol / L, and add ...

Embodiment 3

[0050] (1) The commercially available NaY molecular sieve (silicon-aluminum ratio 4.2:1, Na 2 The O content is 12.5wt%, the packet constant is 2.468nm, and the relative crystallinity is 96%) mixed with the ammonium chloride solution whose concentration is 0.8mol / L, the liquid-solid weight ratio is 15:1, the temperature is raised to 90°C, and ionization is carried out under stirring. Exchange for 1.5 hours, filter off the mother liquor, repeat washing with water 3 times, and filter with suction. Repeat the above process 3 times, filter and wash to obtain NH 4 Y molecular sieve.

[0051] (2) NH in step (1) 4 Y molecular sieves are treated under hydrothermal conditions. The hydrothermal treatment temperature is 600°C, the hydrothermal treatment time is 1.5 hours, the hydrothermal treatment pressure is 0.2MPa, and the water injection rate is 200ml / h. A hydrothermally modified Y molecular sieve was obtained.

[0052] (3) Prepare a deionized aqueous solution with an acid molar ...

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst. The preparation method comprises steps as follows: a binder taking microporous alumina as a matrix is added to a modified Y molecular sieve, a beta molecular sieve and macroporous alumina, and a catalyst carrier is prepared through kneading forming, drying and roasting; and a saline solution containing active components is prepared with group VIB metals and group VIII metals as the active components, citric acid is continuously added to serve as an impregnation liquid, the catalyst carrier is impregnated into the impregnation liquid in an isovolumetric manner and then dried and roasted, and the hydrocracking catalyst is obtained. The catalyst is used for hydrocracking inferior and heavy diesel fuel to produce naphtha, aviation kerosene and low-freezing-point diesel.

Description

technical field [0001] The present invention relates to a method for preparing a hydrocracking catalyst, in particular to a method for preparing a hydrocracking catalyst for producing naphtha, aviation kerosene, and low-condensation diesel through hydrocracking of inferior and heavy diesel oil, and a method for preparing inferior / heavy diesel oil The method for diesel hydrocracking uses the catalyst prepared by the above preparation method as the catalyst. Background technique [0002] At present, the demand for gasoline, aviation fuel, and aromatics in the consumer market is growing rapidly, and the demand for diesel oil has dropped sharply. The consumption diesel-gasoline ratio has continued to decline since reaching a peak of 2.27:1 in 2005, and dropped to 1.64:1 in 2014. It is estimated that in 2020, the consumption diesel-to-gasoline ratio in China will drop to approximately 1.06:1, and the decline in the consumption-diesel-to-gasoline ratio will pose a huge challenge t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J37/30B01J37/10B01J37/02B01J37/08B01J35/10C10G47/20
CPCB01J29/80B01J23/002B01J37/30B01J37/10B01J37/0201B01J37/0018C10G47/20B01J29/084B01J29/7007B01J2229/186B01J35/615B01J35/633B01J35/647
Inventor 鲁旭赵秦峰王书芹兰玲葛少辉侯远东吴璇朴佳锐康洪敏李荣观
Owner PETROCHINA CO LTD