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Medium oil type hydrocracking catalyst and its preparing process

A hydrocracking and catalyst technology, applied in hydrocarbon oil cracking, petroleum industry, etc., can solve the problems of high hydrocracking activity, poor selectivity of medium oil, weak catalyst nitrogen resistance, etc., and achieve high liquid yield and high crystallization High degree, cracking activity and good stability

Active Publication Date: 2005-01-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Chinese patent ZL98114491.8 provides a heavy hydrocarbon hydrocracking catalyst prepared by a co-gel method, the molecular sieve used is Y-type molecular sieve, but the Y-type molecular sieve used in this catalyst is a strong acid type molecular sieve, so the catalyst’s High hydrocracking activity, poor selectivity of medium oil
CN1253859A discloses a high and medium oil type hydrocracking catalyst, the catalyst contains 4-40% of Y zeolite and 10-50% of amorphous silica-alumina and other components, because the zeolite of the catalyst is not resistant to nitrogen with low crystallinity The superhydrophobic Y zeolite, so the nitrogen resistance of the catalyst is not strong, it can only be used in the hydrocracking process with pre-refining

Method used

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Examples

Experimental program
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Effect test

example 1

[0021] 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 3 29%, of which the molecular sieve content is 20%, and the specific surface area is 240m 2 / g, the pore volume is 0.34ml / g.

[0022] Concrete preparation steps are as follows:

[0023] (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 ZrO2 150ml of 140g / l zirconium oxychloride solution was mixed in a 5 liter container and diluted with 2000ml of clean water.

[0024] (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);

[0025] (3) Add ammonia water to the mixture of (1) and (2) under stirring until the pH value is 5.2;

[0026] (4) Prepare 1000 ml of sodium tungstate so...

example 2

[0034] 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 embodiment 2 is used as a raw material for the molecular sieve, and the Hydrothermal treatment, the hydrothermal treatment conditions are temperature 750°C, pressure is normal pressure, and time is 10 hours to 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

[0036] 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 500 ° C, pressure 0.3 MPa, time 6 hours, to obtain 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 invention relates to a medium oil type hydrocracking catalyst and its preparing process, wherein the catalyst employs non-shaped silicon aluminium as carrying agent, and the particularity modified type Y molecular sieve is used as the acidic component, the molecular sieve possesses high degree of crystallization, low unit cell parameter, strong nitrogen resistant property and good destroying capability. The hydrocracking catalyst employing the molecular sieve has strong nitrogen resistant capacity.

Description

technical field [0001] The invention relates to a medium oil type hydrocracking catalyst and a preparation method thereof, in particular to a medium oil type hydrocracking catalyst containing a modified Y-type molecular sieve and a preparation method thereof. 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 p...

Claims

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Application Information

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IPC IPC(8): C10G47/16
Inventor 徐学军刘东香赵崇庆周长兴冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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