Hydrocracking catalyst and its preparing process

A hydrocracking and catalyst technology, which is applied in hydrocarbon oil cracking, petroleum industry and other directions, can solve the problems such as the catalyst activity is not significantly improved, the medium oil selectivity is not significantly improved, the catalyst reaction activity is poor, etc. The effect of high activity and high yield

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] CN1488726 (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 its preparing process
  • Hydrocracking catalyst and its preparing process
  • Hydrocracking catalyst and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 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 CN1583562A, and the specific steps are carried out according to Embodiment 2 in the patent. The obtained Y / β double microporous molecular sieve is coded as YB1.

Embodiment 2

[0040] 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 CN1583563A, 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.

Embodiment 3

[0042] Put 100g of YB1 raw powder into the airtight treatment furnace, and feed SiCl at a flow rate of 15ml / min 4 SiCl with a concentration of 50mmol / L 4 Mix gas with nitrogen, and raise the temperature of the treatment furnace to 200°C for 3 hours 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 raise the temperature to 650°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 microporous molecular sieves with distilled water to a solid-liquid weight ratio of 1:12, then add ammonium nitrate to make the concentration in the solution 1.0 mol / l, and fully stir at 75°C for 3.0 hours. After such exchange 2 times, make Na 2 O content is not more than 0.5%. In a muffle furnace where air can flow, keep ...

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Abstract

The invention discloses a hydrocracking catalyst, which comprises modified Y / Beta double micro-porous molecular sieve, 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 6.5 to 60.0, the BET specific surface area is 350 m<2> / g to 650 m<2> / g, the pore volume is 0.25 ml / g to 0.40 ml / g, and the infrared acidity is 0.50 mmol / g to 1.5 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 hydrocracking process.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a high-activity hydrocracking catalyst mainly using double microporous molecular sieves as the catalyst cracking active component 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. Catalys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G47/16
Inventor 张喜文李瑞丰凌凤香尹泽群张志智樊宏飞马静红孙万付方向晨
Owner CHINA PETROLEUM & CHEM CORP
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