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Hydrocracking catalyst with high activity and high-medium oil selectivity and preparation method of hydrocracking catalyst

A technology for hydrocracking and high-medium oil, which is used in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., and can solve the problems of high catalyst hydrocracking activity, low catalyst hydrocracking activity, and poor medium oil selectivity. , to prevent skeleton collapse, reduce metal loss, and achieve the effect of high crystallinity

Active Publication Date: 2014-04-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent ZL98114489.6 provides a heavy hydrocarbon hydrocracking catalyst prepared by a co-gel method. The molecular sieve used is the modified Y-type molecular sieve reported in ZL96119840.0, but this Y-type molecular sieve is a strong acid type molecular sieve. Therefore, the hydrocracking activity of the catalyst is high, and the selectivity of medium oil is poor
[0005] Chinese patent ZL200410050778.X also provides a catalyst for selective hydrocracking of high and medium oil prepared by the co-gel method. The molecular sieve used is a modified Y-type molecular sieve. This type of Y-type molecular sieve has more weak acid centers, so the catalyst The hydrocracking activity is low, and the selectivity of medium oil is high

Method used

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  • Hydrocracking catalyst with high activity and high-medium oil selectivity and preparation method of hydrocracking catalyst
  • Hydrocracking catalyst with high activity and high-medium oil selectivity and preparation method of hydrocracking catalyst
  • Hydrocracking catalyst with high activity and high-medium oil selectivity and preparation method of hydrocracking catalyst

Examples

Experimental program
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Effect test

example 1

[0024] Catalyst A is the catalyst prepared by the inventive method, and catalyst weight is composed of: WO 3 22.5%, NiO 8.5%, ZrO 2 6.5%, SiO 235.5%, Al 2 o 3 27.0%, of which the molecular sieve content is 25%, and the specific surface area is 260m 2 / g, the pore volume is 0.35ml / g.

[0025] Concrete preparation steps are as follows:

[0026] (1) Prepare Al-containing 2 o 3 600 ml of aluminum chloride solution with a concentration of 90 g / l, containing NiO 200 ml of nickel chloride solution with a concentration of 140 g / l, containing ZrO 2 150ml of 140g / l zirconium oxychloride solution was mixed in a 5 liter container and diluted with 2000ml of clean water.

[0027] (2) Prepare dilute water glass solution, containing SiO 2 550 milliliters of water glass solution of 75g / l, under stirring situation, (2) is added in (1);

[0028] (3) Add ammonia water to the mixture of (1) and (2) under stirring until the pH value is 5.2;

[0029] (4) Prepare 1000 ml of sodium tungs...

example 2

[0037] It is the hydrocracking catalyst B of the present invention, and the preparation method is the same as that of Example 1, except that 20% of the Y-type molecular sieve modified by hydrothermal treatment is added before aging, and the molecular sieve Y-B prepared by ZL96119840.0 Example 2 is used as a raw material for the molecular sieve, and the Hydrothermal treatment, hydrothermal treatment conditions are temperature 780 ° C, pressure 0.3 MPa, ammonia partial pressure 1000 Pa, time 22 hours, then acid treatment, using 2.0 M sulfuric acid 3000 ml, sulfuric acid and molecular sieve weight ratio is 1: 2, temperature 50 ° C , time 12 hours, obtained modified molecular sieve Y-B 1 , Y-B and Y-B 1 The properties are shown in Table 3. Catalyst weight composition is: WO 3 21.0%, NiO 7.5%, ZrO 2 6.5%, SiO 2 35.0%, Al 2 o 3 30.0%, the specific surface is 245m 2 / g, the pore volume is 0.34ml / g.

example 3

[0039] It is the hydrocracking catalyst C of the present invention, and the preparation method is the same as that of Example 1, except that 30% of the Y-type molecular sieve modified by hydrothermal treatment is added before aging, and the molecular sieve Y-C prepared by ZL96119840.0 Example 3 is used as a raw material for the molecular sieve, and the Hydrothermal treatment, hydrothermal treatment conditions are temperature 800 ° C, pressure 0.2MPa, ammonia partial pressure 2500Pa, time 28 hours, then carry out acid treatment, use 4.0M hydrochloric acid 8500 milliliters, hydrochloric acid and molecular sieve weight ratio is 1: 18, temperature 70 ℃, time 15 hours, obtained modified molecular sieve Y-C 1 , Y-C and Y-C 1 The properties are shown in Table 3. Catalyst weight composition is: WO 3 23.6%, NiO 7.4%, ZrO 2 7.0%, SiO 2 34.0%, Al 2 o 3 28.0%, the specific surface is 270m 2 / g, the pore volume is 0.35ml / g.

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Abstract

The invention relates to a hydrocracking catalyst with high activity and high-medium oil selectivity. According to the hydrocracking catalyst, amorphous silicon aluminum is used as a carrier, and a specially-modified Y-type molecular sieve is used as acid component, the molecular sieve has high degree of crystallization and low cell parameters, rich secondary holes, large surface area, less uniformly-distributed acid sites, no strong acid center, and most of medium-strength acid centers, and also has strong nitrogen-resisting performance and better damage capacity; and the hydrocracking catalyst using the molecular sieve has high hydrocracking activity and high middle oil selectivity, and stronger nitrogen resisting capacity. The catalyst provided by the invention is used in the process of producing an intermediate distillate product by adopting a heavy hydrocarbon single-section or one-section hydrocracking process, and has better activity and middle oil selectivity.

Description

technical field [0001] The invention relates to a hydrocracking catalyst with high activity and high-medium oil selectivity, in particular a high-activity, high-medium oil selectivity hydrocracking catalyst containing modified Y-type molecular sieve. Background technique [0002] At present, the shortage of oil resources in the world, crude oil becomes heavier and worse, the demand for middle distillates increases, the upgrading of petrochemical products and the stricter environmental regulations all greatly promote the lightening of heavy oil, and constitute the accelerated development of hydrogenation. Powerful driving force of technology, hydrocracking is an effective means to increase the production of middle distillate oil. With atmospheric and vacuum distillate oil, vacuum distillate oil and secondary processed light oil as raw materials, high-quality diesel oil and jet fuel can be produced after hydrocracking , and the product has great flexibility and good product qu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16C10G47/20
Inventor 徐学军王继锋刘东香王海涛冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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