A carrier and its application, a catalyst, its preparation method and application, and a hydrocracking method

A technology of carrier and dealumination agent, applied in the field of hydrocarbon oil hydrocracking, can solve the problems of difficult elution of non-framework aluminum, destruction of zeolite crystal structure, reduction of zeolite pore patency, etc. Effect of non-framework aluminum content and enrichment of secondary pores

Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using SiCl 4 The disadvantage of the isomorphic substitution method is that it is highly corrosive, the reaction is not easy to proceed uniformly, and the non-framework aluminum produced is difficult to elute, which reduces the pore smoothness of the zeolite. In addition, SiCl 4 The isomorphic substitution method produces little or no secondary pores
Use (NH 4 ) 2 SiF 6 Isomorphic substitution, although the reaction conditions are mild, the non-framework aluminum content in the prepared dealuminated zeolite is low, and there are few defect sites in the crystal structure, but when more than 50-60% of the zeolite framework aluminum is removed, the zeolite crystal structure is still seriously affected. Destruction, the insoluble fluoride mixed in the zeolite is not easy to wash off, and the residual fluoride will destroy the crystal structure of the zeolite at high temperature

Method used

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  • A carrier and its application, a catalyst, its preparation method and application, and a hydrocracking method
  • A carrier and its application, a catalyst, its preparation method and application, and a hydrocracking method
  • A carrier and its application, a catalyst, its preparation method and application, and a hydrocracking method

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0129] (1) Disperse 100g (dry basis) NaY molecular sieve (produced by Sinopec Catalyst Changling Branch, whose physical and chemical property parameters are listed in Table 2 and Table 3 respectively) in 1500mL water, with stirring, at ambient temperature (25 ° C, The same below) was added dropwise at a constant speed to 200 mL of an aqueous solution containing 50 g of ammonium sulfate (purchased from Beijing Yili Chemical Reagent Factory) (the dropping time was controlled to be 30 min). After the ammonium sulfate aqueous solution was added dropwise, the stirring was stopped and the mixed solution was filtered, and the solid phase was washed with deionized water for 3 times, and then dried in an air atmosphere at 105° C. under normal pressure (1 standard atmospheric pressure, the same below) for 3 hours to obtain The sodium ion content of the exchanged molecular sieves is listed in Table 4.

[0130] (2) Place the exchanged molecular sieve prepared in step (1) in a tube furnace...

preparation Embodiment 2

[0156] (1) Disperse 100g (dry basis) NaY molecular sieve (same as Preparation Example 1) in 1500mL of water, and with stirring, add 300mL containing 50g of ammonium nitrate (purchased from Lee Chemical Reagent Factory) aqueous solution (control drop time is 50min). After the ammonium nitrate aqueous solution is added dropwise, stop stirring and filter the mixed solution, wash the solid phase with deionized water for 3 times, and dry it in an air atmosphere at 120°C for 3 hours under normal pressure to obtain an exchanged molecular sieve with a sodium ion content of Listed in Table 4.

[0157] (2) Mix the exchanged molecular sieve prepared in step (1) with water to obtain a slurry containing molecular sieve (55% by weight on a dry basis). Fill the slurry containing molecular sieves in a crucible (the specifications of the crucible: the inner diameter is 40 mm, the height is 40 mm, the same below), seal the crucible and place it in a muffle furnace, raise the temperature to 550...

preparation Embodiment 3

[0166] (1) Disperse 100g (dry basis) NaY molecular sieve (produced by Sinopec Catalyst Zhoucun Branch, whose physical and chemical properties are listed in Table 2 and Table 3 respectively) in 1300mL of water, and add dropwise at a constant speed at 35°C with stirring 100mL contains 45g of ammonium nitrate (purchased from Beijing Yili Chemical Reagent Factory) aqueous solution (controlling the dropping time to 40min). After the dropwise addition of the aqueous solution is completed, the stirring is stopped and the mixed solution is filtered. After the solid phase is washed with deionized water for 3 times, it is dried in an air atmosphere at 110°C for 3.5 hours under normal pressure, thereby obtaining an exchanged molecular sieve with a sodium ion content of Listed in Table 4.

[0167] (2) Place 85g (dry basis) of the exchanged molecular sieve prepared in step (1) in a tube furnace, and continuously feed water vapor into the tube furnace (the rate of introduction of water vapo...

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Abstract

The invention discloses a carrier and an application thereof. The carrier contains an aluminum-removal Y-type molecular sieve and a heatproof inorganic oxide. The invention also discloses a catalyst by employing the carrier and a preparation method and an application thereof. The invention further discloses a hydrocracking method of the catalyst. According to the molecular sieve in the carrier, the molecular sieve has high crystallization degree and abundant secondary pores, and has lower non-framework aluminum content. The catalyst is prepared by VIII metallic element and VIB metallic element loaded on the carrier, the catalyst displays better catalysis performance in a hydrocracking reaction, and can obtain good balance among catalytic activity, middle distillate selectivity and tail oil BMCI value.

Description

technical field [0001] The present invention relates to the technical field of hydrocarbon oil hydrocracking. Specifically, the present invention relates to a carrier and its application. The present invention also relates to a catalyst using the carrier and its preparation method and application. The present invention further relates to a The hydrocracking method of the catalyst. Background technique [0002] In recent years, the trend of heavy and inferior crude oil has become increasingly obvious worldwide. At the same time, the demand for middle distillates and reforming and steam cracking raw materials has continued to increase. This promotes the rapid development of heavy distillate processing technology, and catalyst is the most important and key factor. [0003] Hydrocracking technology can produce high-quality middle distillates, and the product variety and yield can be adjusted according to market demand. Through the combination and grading of various catalysts, n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J29/08B01J29/16B01J35/10C10G47/20
Inventor 董松涛陈元君李明丰胡志海聂红赵广乐辛靖
Owner CHINA PETROLEUM & CHEM CORP
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