Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of different properties, catalyst performance differences, low catalytic activity, etc., to increase active centers and control cracking. degree, the effect of reducing coke yield

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

The preparation method of the Y-type molecular sieve is to treat the ammonium-type Y-type molecular sieve in an acidic buffer solution with ammonium hexafluorosilicate, and the sodium oxide content in the obtained Y-type molecular sieve is generally about 0.5wt%, and the catalytic activity is low.
[0007] The above-mentioned hydrocracking catalysts, because Y-type molecular sieves modified by different methods, have different properties of the modified Y-type molecular sieves, resulting in great differences in catalyst performance

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

[0048] 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, 410mL solution concentration is 78g / 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 63.8wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.15MPa, temperature Under the conditions of 530°C and a treatment time of 1.5 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 650mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 7.5%, and stirred at 80°C for 2 hours, then transfer the mixed material to a crystallization kettle for hydrothermal crystallization, the crystallization temperature i...

Embodiment 2

[0050] 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, 256mL solution concentration is 58g / 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 65.0wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.10MPa, temperature Under the conditions of 450°C and treatment time of 2.0 hours, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 369mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 4.8%, and stirred at a constant temperature of 85°C for 2 hours , and then transfer the mixed material to a crystallization kettle for hydrothermal crystallization, the...

Embodiment 3

[0052] 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, 410mL solution concentration is 78g / 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 63.8wt%; the above-mentioned dried molecular sieve is added to the hydrothermal treatment device, under gauge pressure 0.15MPa, temperature Under the conditions of 480°C and treatment time of 1.0 hour, the molecular sieve was hydrothermally treated; 130g of the hydrothermally treated molecular sieve was put into 520mL of tetraethylammonium hydroxide aqueous solution with a mass concentration of 5.3%, and stirred at 80°C for 4 hours , and then transfer the mixed material to a crystallization tank for hydrothermal crystallization, the crystallization temperature i...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The hydrocracking catalyst takes a modified Y-type molecular sieve which contains rich mesopores and has intensive effective pore diameter distribution as an acidic component; the modified Y-type molecular sieve has the following characteristics: the relative crystallization degree is 110 percent to 150 percent, the mol ratio of SiO2/Al2O3 is 10 to 50, the lattice parameter is 2.436nm to 2.445nm, the total pore volume is 0.55mL/g to 1.0mL/g and the mesopore pore volume accounts for 70 percent of the total pore volume or more. The hydrocracking catalyst disclosed by the invention is suitable for being used in a hydrocracking process of increasing the yield of high-quality heavy naphtha and has relatively high catalytic activity and product selectivity.

Description

technical field [0001] The present invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst for prolific catalytic reforming feedstock (heavy naphtha) and a preparation method thereof. Background technique [0002] With the rapid development of the world economy, the market demand for various chemical raw materials, especially aromatic hydrocarbon raw materials, will continue to grow for a long period of time now and in the future. The catalytic reforming technology for the production of aromatic hydrocarbon raw materials is developing rapidly, which enables Demand for heavy naphtha, a feedstock for catalytic reforming, has also increased significantly. As one of the main means of lightening heavy oil, hydrocracking technology is the most suitable refining technology to rationally utilize limited petroleum resources and increase the production of high-quality heavy naphtha. Hydrocracking catalysts are the core...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/14B01J29/16B01J35/10C10G47/20
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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