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Hydrocracking catalyst and preparation thereof

A hydrocracking and catalyst technology, applied in the fields of hydrocarbon oil cracking, petroleum industry, etc., can solve the problems that the selectivity of medium oil has not been significantly improved, the catalyst activity has not been significantly improved, and the catalyst reactivity is poor, and the BMCI value has been reduced. , activity improvement, high activity effect

Active Publication Date: 2009-01-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the perspective of the use effect, the reactivity of this type of catalyst is still poor (greater than 392 ° C), and the selectivity of medium oil has not been significantly improved.
[0006] CN 1488726 (mesoporous molecular sieve and Y-type molecular sieve) and CN1667093 (Y-type molecular sieve and SAPO molecular sieve) etc. have disclosed the technology that contains mechanical mixing molecular sieve as hydrocracking catalyst component, but in the scheme that they relate to, mainly aim at processing For distillate oils with high impurities such as sulfur and nitrogen, the catalyst activity has not been significantly improved

Method used

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  • Hydrocracking catalyst and preparation thereof
  • Hydrocracking catalyst and preparation thereof
  • Hydrocracking catalyst and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] The Y / β double microporous molecular sieve is synthesized by the double microporous composite molecular sieve synthesis method disclosed in Chinese patent CN1583562A, and the specific steps are carried out according to Example 2 in the patent. The obtained Y / β double microporous composite molecular sieve is coded as YB1. Put 100g of YB1 raw powder into the closed treatment furnace, and pass it into SiF at a flow rate of 15ml / min 4 SiF at a concentration of 20mmol / L 4 Mix gas with nitrogen, and raise the temperature of the treatment furnace to 200°C for 2h at a heating rate of 5°C / min. After the process is completed, the mixed gas is stopped, and the temperature is lowered to room temperature for hydrothermal treatment. The specific conditions are to increase the temperature to 550°C at a heating rate of 2.0°C / min and keep the pressure at 0.1MPa, release the pressure after 2 hours of treatment, and drop the temperature to room temperature. Dilute the washed double mic...

Embodiment 2

[0052] The Y / β double microporous composite molecular sieve is synthesized by the synthesis method of the double microporous composite molecular sieve disclosed in Chinese patent CN1583563, and the specific steps are carried out according to Embodiment 4 in the patent. The obtained Y / β double microporous composite molecular sieve is coded as YB2. Put 100g of YB2 raw powder into the airtight treatment furnace, and feed SiCl at a flow rate of 20ml / min 4 SiCl with a concentration of 50mmol / L 4 Mix gas with nitrogen, and raise the temperature of the treatment furnace to 150°C for 4 hours at a heating rate of 8°C / min. After the process is completed, stop feeding the mixed gas for hydrothermal treatment. The specific conditions are to increase the temperature to 575°C at a heating rate of 10.0°C / min, and maintain a pressure of 0.3MPa, release the pressure after 2 hours of treatment, and drop the temperature to room temperature. Dilute the washed double microporous molecular sieve...

Embodiment 3

[0058] USY molecular sieve is produced by Wenzhou Huahua Group Company, the number is USY1. The molecular sieve was treated at a treatment temperature of 500° C. and a water vapor pressure of 0.10 MPa for 2.0 hours, then the pressure was released, and the temperature dropped to room temperature. The number is USY1-1.

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Abstract

The invention discloses a hydrocracking catalyst, which comprises modified Y / Beta double micro-porous molecular sieve, modified Y molecular sieve, modified Beta molecular sieve as well as other carrier material and hydrogenation active components. Wherein the total silica-alumina mass ratio of the modified Y / Beta double micro-porous molecular sieve is 20.0 to 50.0, the BET specific surface area is 420 m<2> / g to 650 m<2> / g, the pore volume is 0.30 ml / g to 0.38 ml / g, and the infrared acidity is 0.65 mmol / g to 1.2 mmol / g. The catalyst preparation method adopts an impregnation method, and the modified Y / Beta double micro-porous molecular sieve is modified and processed with a firstly making up silicon and then roasting method. The hydrocracking catalyst has a higher service performance when being used in the heavy distillate oil hydrocracking, and can be used in various types of hydrogenation cracking process.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst containing double microporous composite molecular sieves and a preparation method thereof. Background technique [0002] Hydrocracking technology is one of the main means of lightening heavy oil, and chemical raw materials, light fuel oil and middle distillates are the main target products of this technology. At present, with the acceleration of upgrading of petrochemical products, stricter environmental protection regulations, and increasing demand for chemical raw materials, the status of hydrocracking technology in the entire petroleum refining industry has been further improved. [0003] In many refining and processing processes, developing the most suitable catalyst is considered to be one of the most critical and ideal choices, and the same is true for hydrocracking. Catalyst activity is the main index to measure catalyst...

Claims

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Application Information

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IPC IPC(8): C10G47/16
Inventor 凌凤香张喜文孙万付李瑞丰张志智樊宏飞马静红尹泽群方向晨
Owner CHINA PETROLEUM & CHEM CORP
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