In situ type molecular sieve hydrogenation cracking catalyst and method for preparing same

A hydrocracking and catalyst technology, applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of good selectivity and high activity

Active Publication Date: 2010-01-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether the in-situ synthesized Y molecular sieve can be suitable for use in hydrocracking catalysts, or how to prepare or what kind of in-situ synthesized Y molecular sieves are suitable for hydrocracking catalysts, the prior art does not involve this issue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] It is the product of the in-situ crystallization octahedral molecular sieve of the present invention. First, the raw powder of kaolin from Anhui with a particle size of 200 mesh is roasted in a muffle furnace at 550°C for 2 hours to low-temperature metakaolin. Then take a 5 liter beaker, add 295.6g of aluminum sulfate and add 600g of water to dissolve, and add 56.3g of solid sodium hydroxide to 171g of water to dissolve, slowly add the former to the latter under stirring, and then add 225g of the above-mentioned roasted kaolin, and then add the content of silica 992g 28% water glass, stirred continuously for 1h, then allowed to stand and age for 4h, then add 50g of Y directing agent. After stirring evenly, transfer the above mixture to the reactor and crystallize under 110℃ hydrothermal condition for 14h, filter and wash to obtain in-situ crystal Chemical product A. It is Y molecular sieve determined by XRD light, crystallinity is 39%, specific surface is 380m 2 / g, por...

Embodiment 2

[0029] It is the product of the in-situ crystallization octahedral molecular sieve of the present invention. First, natural kaolin raw powder with a particle size of 900 mesh produced in Shandong is calcined in a muffle furnace at 950°C for 2 hours to obtain high-temperature metakaolin. Then take a 5 liter beaker, add 45.9g of solid sodium hydroxide and 273.7g of water and stir to dissolve, slowly add 212.5g of 12% aluminum chloride solution, stir and add 152g of the above-mentioned roasted kaolin, and then add water with 28% silicon oxide content Glass 5361g, stirred continuously for 1h, then allowed to stand and age for 8h, and then added 30g Y directing agent. After stirring evenly, the above mixture was transferred to the reactor and crystallized under hydrothermal conditions at 97°C for 17h, filtered and washed with water to obtain the in-situ crystallization product B. Measured by XRD light, it is a typical Y molecular sieve, with 42% crystallinity and a specific surface ...

Embodiment 3

[0031] It is the product of the in-situ crystallization octahedral molecular sieve of the present invention. First, the coal series kaolin raw powder produced in Inner Mongolia with a particle size of 600 mesh is calcined in a muffle furnace at 1350°C for 2 hours to become mullite. Then take a 5 liter beaker, add 60.9g of solid sodium hydroxide and 124.8g of sodium aluminate and add water 114.5, stir until dissolved, add 135g of the above mullite, then add 520g of water glass with 32% silica content, and continue stirring for 1h After standing and aging for 2 hours, 15 g of Y directing agent was added, and after stirring, the above mixture was transferred to the reaction kettle and crystallized under hydrothermal conditions at 105°C for 11 hours, filtered and washed with water to obtain the in-situ crystallized product C. Determined by XRD light, it is a typical Y molecular sieve, with 33% crystallinity and a specific surface area of ​​288m 2 / g, pore volume 0.236ml / g.

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Abstract

The invention relates to an in situ type molecular sieve hydrogenation cracking catalyst and a method for preparing the same. The in situ type molecular sieve hydrogenation cracking catalyst contains a hydrogenation activity metallic component and a cracking activity component, wherein the cracking activity component comprises a Y type molecular sieve obtained by in situ crystallization synthesis, the weight of the in situ type molecular sieve cracking component is 10 to 90 percent of that of the hydrogenation cracking catalyst, the specific surface of the hydrogenation cracking catalyst is between 150 and 500m<2>/g, the pore volume is between 0.2 and 0.4ml/g, and the pore volume with mesoporous structure which is between 2 and 10nm is over 40 percent of the total pore volume. The common impregnation method is adopted in the process of preparing the catalyst. When the hydrogenation cracking catalyst is used for the hydrogenation of heavy hydrocarbons, the catalyst has the characteristics of high activity, good selectivity, good product quality and the like.

Description

Technical field [0001] The invention belongs to the field of catalytic hydrogenation, and relates to an in-situ molecular sieve hydrocracking catalyst and a preparation method thereof. Further, the present invention belongs to the field of petrochemical industry, and relates to a hydrocracking catalyst containing in-situ synthesized octahedral molecular sieve and its application. technical background [0002] The artificial synthesis and industrial application of molecular sieves have promoted the development of materials chemistry and industrial catalysis technology. In the heavy oil deep processing technology of the petroleum refining process, a milestone leap is the heavy oil cracking technology revolution triggered by the replacement of natural clay and amorphous acidic aluminum silicate by molecular sieves, including the application of molecular sieves in catalytic cracking catalysts and in hydrocracking Application in catalysts. With strict environmental protection requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/16B01J29/12C10G47/16
Inventor 陈松方向晨刘立军张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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