Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low catalyst reactivity and medium oil selectivity, which is difficult to meet the processing capacity of the manufacturer's equipment, modification Problems such as low crystallinity of molecular sieves, to achieve good cracking activity and product selectivity, high proportion of mesopores, and good pore size distribution range

Active Publication Date: 2017-11-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wherein the Y-type molecular sieve used is prepared by NaY through ammonium exchange, hydrothermal treatment, ammonium exchange, and hydrothermal treatment. The crystallinity of the modified molecular sieve is not high, and the product selectivity is poor.
The reaction activity and middle oil selectivity of the catalyst are not high, and it is difficult to meet the needs of the manufacturer to increase the processing capacity of the device and further increase the production of middle distillates

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Take 278g of NaY raw powder and put it into 800mL of clean water, raise the temperature to 95°C, and start to add dropwise (NH 4 ) 2 SiF 6 Aqueous solution, 307mL solution concentration is 72g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 2 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 65.3wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.25MPa, temperature Under the conditions of 610°C and treatment time of 1.0 hour, carry out hydrothermal treatment on molecular sieve; take 130g of molecular sieve after hydrothermal treatment and put it into 520mL aqueous solution of tetraethylammonium hydroxide with a mass concentration of 5.3%, and stir at constant temperature at 80°C for 4 hours , and then transfer the mixed material to a crystallization tank for hydrothermal crystallizatio...

Embodiment 2

[0052] Take 278g of NaY raw powder and put it into 800mL of clean water, raise the temperature to 100°C, and start to add dropwise (NH 4 ) 2 SiF 6 Aqueous solution, 182mL solution concentration is 55g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 2 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 68.0wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.30MPa, temperature Under the conditions of 670°C and treatment time of 2.0 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 910mL of tetrapropylammonium hydroxide aqueous solution with a mass concentration of 7.5%, and stirred at 90°C for 4 hours , and then transfer the mixed material to a crystallization kettle for hydrothermal crystallization, the crystallization temperat...

Embodiment 3

[0054] Take 278g of NaY raw powder and put it into 1000mL of clean water, raise the temperature to 100°C, and start to add dropwise (NH 4 ) 2 SiF 6Aqueous solution, 417mL solution concentration is 85g / L (NH 4 ) 2 SiF 6 solution, stirring at constant temperature for 3 hours after the dropwise addition, filtering and drying after the completion of the constant temperature, the dry basis of the dried molecular sieve is 67.2wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.35MPa, temperature Under the conditions of 700°C and treatment time of 3.0 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 1040mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 3.5%, and stirred at a constant temperature of 85°C for 3 hours , and then transfer the mixed material to a crystallization tank for hydrothermal crystallization, the ...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The catalyst comprises hydrogenation active metal components and a carrier, wherein the carrier comprises a modified Y-type molecular sieve, a beta molecular sieve and aluminum oxide; the properties of the modified Y-type molecular sieve are as follows: the relative crystallinity is 110-150%, the molar ratio of SiO2 / Al2O3 is 55-100, the cell parameter is 2.425-2.435nm, the total pore volume is 0.55-1.0mL / g, and the volume of mesopores accounts for 70% or above of the total pore volume. The catalyst is applied to the hydrocracking process of middle distillate products with high yield, high quality and high low-temperature fluidity, has the characteristics of high activity and high selectivity, and is capable of producing high-quality hydrogenation tail oil.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst for producing high-quality low-condensation middle distillates and a preparation method thereof. Background technique [0002] In recent years, the demand for high-quality middle distillate products in oil markets around the world has been growing continuously. With the rapid development of economy, this contradiction between supply and demand has become more prominent. With its unique advantages, hydrocracking technology has become the best means for deep processing of heavy oil to produce high-quality clean middle distillate. At present, the activity of medium-oil hydrocracking catalysts in various countries in the world is not very high, and the freezing point of the obtained diesel oil is also high, which is difficult for refineries to improve the existing equipment or increase the processing capacity to further increase the...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/20
CPCB01J29/166B01J29/7815B01J29/80B01J2229/14B01J2229/24B01J2229/32C10G47/20C10G2300/70
Inventor 刘昶王凤来关明华杜艳泽黄薇赵红郝文月曹均丰
Owner CHINA PETROLEUM & CHEM CORP
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