High active high medium oil selective hydrocracking catalyst and preparation thereof

A hydrocracking, high-medium oil technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low catalyst hydrocracking activity, high catalyst hydrocracking activity, and high medium oil selectivity , to achieve the effects of reducing metal loss, excellent performance, and improving medium oil selectivity

Active Publication Date: 2008-08-13
CHINA PETROLEUM & CHEM CORP +1
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  • 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 ZL00123131.6 also provides a selective hydrocracking catalyst for high and medium oil prepared by co-gelation method. The molecular sieve used is a modified Y-type molecular sieve. This Y-type molecular sieve has low acid center strength and is a weak acid type molecular sieve. , so the catalyst has low hydrocracking activity and high selectivity for medium oil

Method used

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  • High active high medium oil selective hydrocracking catalyst and preparation thereof
  • High active high medium oil selective hydrocracking catalyst and preparation thereof
  • High active high medium oil selective hydrocracking catalyst and preparation thereof

Examples

Experimental program
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Effect test

example 1

[0022] Catalyst A is the catalyst prepared by the inventive method, and catalyst weight is composed of: WO 3 22.0%, NiO 9.0%, ZrO 2 7% SiO 2 33%, Al 2 o 329%, of which the molecular sieve content is 20%, and the specific surface area is 240m 2 / g, the pore volume is 0.34ml / g.

[0023] Concrete preparation steps are as follows:

[0024] (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.

[0025] (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);

[0026] (3) Add ammonia water to the mixture of (1) and (2) under stirring until the pH value is 5.2;

[0027] (4) Prepare 1000 ml of sodium tungstate s...

example 2

[0035] It is the hydrocracking catalyst B of the present invention, and the preparation method is the same as that of Example 1, except that 25% 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 700 ° C, pressure 0.3 MPa, time 22 hours, then acid treatment, using 0.5M sulfuric acid 3000 ml, sulfuric acid and molecular sieve weight ratio is 1: 2, temperature 30 ° C, time 1 hour, Obtain 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 30%, Al 2 o 3 35%, the specific surface is 260m 2 / g, the pore volume is 0.36ml / g.

example 3

[0037] It is the hydrocracking catalyst C of the present invention, and the preparation method is the same as Example 1, except that the Y-type molecular sieve modified by hydrothermal treatment is added before aging to be 17%, and the molecular sieve Y-C prepared by ZL96119840.0 embodiment 3 is used as a raw material for the molecular sieve, and the Hydrothermal treatment, hydrothermal treatment conditions are temperature 650 ° C, pressure 0.2 MPa, time 28 hours, then acid treatment, use 3.0 M hydrochloric acid 8500 ml, hydrochloric acid and molecular sieve weight ratio is 1: 18, temperature 60 ° C, time 3 hours , to get 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% SiO 2 31%, Al 2 o 3 31%, the specific surface is 270m 2 / g, the pore volume is 0.31ml / g.

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Abstract

The present invention provides a hydrocracking catalyst having high activity, high medium oil selectivity, catalyst constitute uses amorphous silica-alumina as a carrier, Y type molecular sieve processed by special modification is an acidity component, the molecular sieve has a high crystallinity and a lower cell parameter, a plenty quadric hole, larger surface, in addition, has a small acid center, even distribution, no strong acid center, 70-80% is moderate intensity acid center, 20-30% is weak acid center, and the molecular sieve also has a strong anti-nitrogen ability and better damaging ability, the hydrocracking catalyst using the molecular sieve has a better hydrocracking activity, and a higher medium oil selectivity, and a strong anti-nitrogen ability at the same time. The invention uses heavy hydrocarbon single stage or single stage serial hydrocracking process generate midbarrel oil product, and has better activity and medium 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 Applications(China)
IPC IPC(8): B01J29/26C10G47/20
Inventor 徐学军刘纪端刘东香王海涛冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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