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Hydrocracking catalyst carrier containing beta molecular sieve and preparation method thereof

A catalyst carrier, beta molecular sieve technology, applied in molecular sieve catalysts, catalyst carriers, physical/chemical process catalysts, etc., can solve the problem of low selectivity of middle distillate oil, achieve suitable acidity and acid distribution, increase ratio, and reasonable pore structure Effect

Active Publication Date: 2013-05-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Beta zeolite not hydrothermally treated or hydrothermally treated at relatively low temperature, silica to alumina molar ratio less than 30:1 and at least 28 wt% SF 6 Adsorption capacity, the catalyst prepared by modifying this β zeolite as a cracking component, the selectivity of middle distillates is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The modified β molecular sieve of the present invention is synthesized by using tetraethylammonium hydroxide as a template and adopting a hydrothermal crystallization method. Take industrial synthetic β molecular sieve raw powder slurry 10000mL, which contains about 2000g of solid phase β molecular sieve, its chemical silicon aluminum SiO 2 / Al 2 o 3 (Molar ratio) The ratio is 27.49, and the specific surface area is 101m 2 / g, the pore volume is 0.19cm 3 / g, the sodium oxide content is 3.67wt%. Add an appropriate amount of clean water and a certain amount of ammonium nitrate to the slurry, so that the liquid-solid ratio (weight) is 10:1, the concentration of ammonium nitrate is 2mol / L, stir, heat up to 95-100°C, and stir at a constant temperature 2 hours, then filter, the filter cake is subjected to ammonium exchange for the second time, the exchange conditions are the same as the first time, and finally wash the β molecular sieve until the pH value is neutral, put ...

Embodiment 2

[0051] Take 200g of B-1 as a raw material, and carry out hydrothermal treatment on B-1 at a water vapor pressure of 0.15MPa, a treatment temperature of 550°C, and a treatment time of 2 hours. The obtained molecular sieve is B-2, and its properties are shown in Table 1.

[0052] Take 200g of B-1 as a raw material, and carry out hydrothermal treatment on B-1, at a water vapor pressure of 0.15MPa, a treatment temperature of 650°C, and a treatment time of 2 hours. The obtained molecular sieve is B-3, and its properties are shown in Table 1.

Embodiment 3

[0054] Weigh 60g of B-2 molecular sieve and put it into a closed flask with a reflux device, add 1000ml of aluminum sulfate aqueous solution with a concentration of 0.8mol / L, stir at a constant temperature of 95°C for 1.0 hour, filter, and wash the filter with hot deionized water Cake, stop washing when the pH value of the washing solution is close to 7. The filter cake was dried in an oven at 120° C. for 5 hours to obtain the β-type molecular sieve of the present invention, its number B-4, and the properties of the molecular sieve are shown in Table 1.

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PUM

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Abstract

The invention discloses a hydrocracking catalyst carrier containing a beta molecular sieve, its preparation method and a hydrocracking catalyst with the carrier. The hydrocracking catalyst carrier contains a modified beta molecular sieve, amorphous silicon aluminum and alumina, wherein the modified beta molecular sieve is prepared by: subjecting a crystallized beta molecular sieve slurry directly to ammonium exchange and a template agent removal treatment, then first conducting a hydrothermal treatment, and performing an aluminum salt solution treatment, under the condition of maintaining a high beta molecular sieve crystallinity, removing part of non-framework aluminum uniformly, thus obtaining the beta molecular sieve with the characteristics of high Si / Al ratio, large specific surface area, appropriate acidity and acid distribution, and reasonable pore structure, etc. The modified beta molecular sieve especially has a suitable cracking effect and a very good isomerization effect on long-chain alkane and the long side chain alkyl of aromatic hydrocarbon and cyclane, and has a synergistic effect with amorphous silicon aluminum, so that the prepared hydrocracking catalyst has high activity, can produce maximum low condensation point diesel oil, and also can produce high quality hydrogenation tail oil as a byproduct.

Description

technical field [0001] The invention relates to a hydrocracking catalyst carrier containing β molecular sieve and its preparation method, in particular to a hydrocracking catalyst carrier with high activity and high yield of low freezing point diesel oil and its preparation method, as well as the hydrocracking catalyst carrier prepared by the carrier Hydrocracking catalyst. Background technique [0002] Hydrocracking technology has the characteristics of strong adaptability of raw materials, great flexibility of product schemes, high selectivity of target products, good product quality, and high added value. It can directly convert various heavy and low-quality raw materials into clean fuel oil and high-quality chemical raw materials. It has become one of the most important heavy oil deep processing techniques in modern oil refining and petrochemical industries, and has been increasingly widely used in countries all over the world. As the quality of crude oil is deteriorati...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J29/78B01J35/10C10G47/20
Inventor 王凤来刘昶关明华杜艳泽赵红
Owner CHINA PETROLEUM & CHEM CORP
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