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A kind of method for preparing hydrocracking catalyst

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems that are not conducive to the effective coordination of hydrogenation metals and acidic components, and the inability to control hydrogenation activity well Problems such as metal distribution and affecting the distribution of hydrogenation active metals, etc., to achieve good strength, reduce production costs, and good pore structure

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above method cannot control the distribution of hydrogenation active metals well, thereby affecting the distribution of different hydrogenation active metals, which is not conducive to the formation of effective active phases, and is not conducive to the effective coordination of hydrogenation metals and acidic components, and ultimately affects the performance of the catalyst.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Nickel chloride, aluminum chloride are mixed with deionized water respectively to prepare mixed solution A. In mixed solution A, the weight concentration of Ni in terms of NiO is 42g / L, and Al in terms of Al 2 o 3 The weight concentration of meter is 32g / L. Dissolve aluminum chloride in deionized water, add dilute water glass solution, and prepare mixed solution B. In mixed solution B, Al is Al 2 o 3 The weight concentration of the meter is 28g / L, Si is SiO 2 The weight concentration of the meter is 40g / L. Add deionized water into the reaction tank, and set the weight concentration as WO 3 The calculated weight concentration is 45g / L sodium tungstate alkaline solution and the mixed solution A are added into the reaction tank concurrently, the gelling temperature is kept at 60°C, the pH value is controlled at 7.9 during the concurrent gelling reaction process, and the gelling time is controlled At 1.0 hour, Slurry I containing nickel, tungsten, aluminum precipitates...

Embodiment 2

[0060] According to the method of embodiment 1, press the component content ratio of catalyst B in table 1, add nickel nitrate, aluminum chloride, zirconium oxychloride solution in dissolving tank 1, prepare mixed solution A, add in dissolving tank 2 Add aluminum chloride dissolved in deionized water, add water glass, and prepare mixed solution B. Add deionized water into the reaction tank, and set the weight concentration as WO 3 The calculated weight concentration is 35g / L sodium tungstate alkaline solution and mixed solution A are fed into the reaction tank in parallel flow, the gelling temperature is kept at 50°C, the pH value is controlled at 7.4 during the concurrent gelling reaction process, and the gelling time is controlled At 0.8 hours, slurry I containing nickel, tungsten, aluminum, zirconium precipitates was generated. The obtained precipitate slurry I was aged, the aging temperature was 70° C., the aging pH value was controlled at 6.6, and the aging was performed...

Embodiment 3

[0062] According to the method for embodiment 1, press the component content ratio of catalyst C in table 1, add nickel chloride, aluminum chloride in dissolving tank 1, prepare mixed solution A, add aluminum chloride and aluminum chloride in dissolving tank 2 Add deionized water and water glass to prepare mixed solution B. Add deionized water into the reaction tank, and set the weight concentration as WO 3 The calculated weight concentration is 40g / L sodium tungstate alkaline solution and mixed solution A are added into the reaction tank in parallel flow, the gelling temperature is kept at 45°C, the pH value is controlled at 8.2 during the concurrent gelling reaction process, and the gelling time is controlled In 1 hour, slurry I containing nickel, tungsten, aluminum precipitates was formed. The obtained sediment slurry I was aged, the aging temperature was 72° C., the aging pH value was controlled at 7.2, and the aging was performed for 0.6 hours. The aging was carried out ...

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst. The catalyst is first to make the mixed solution A containing Ni and Al and the alkaline solution of sodium tungstate co-flow for colloidal reaction, then aging the obtained slurry, and mix the mixed solution B containing Si and Al components with the alkaline solution of sodium tungstate The solution is added in parallel to the above-mentioned aged slurry to carry out gelation reaction, and then the suspension of molecular sieves is added to carry out aging, and then dried and shaped to make a hydrocracking catalyst. The hydrocracking catalyst is suitable for medium oil type hydrocracking catalyst and has good activity and selectivity.

Description

technical field [0001] The invention relates to a preparation method of a hydrocracking catalyst for treating heavy hydrocarbons. Background technique [0002] Hydrocracking is carried out under relatively high pressure. Hydrocarbon molecules and hydrogen undergo cracking and hydrogenation reactions on the catalyst surface to generate lighter molecules. At the same time, hydrodesulfurization, denitrogenation and hydrogenation of unsaturated hydrocarbons also occur reaction. The cracking reaction of hydrocarbons in the hydrocracking process is carried out on the acidic center of the catalyst, following the carbon ion reaction mechanism, hydrogenation and cracking reactions are accompanied by the occurrence of hydrocarbon isomerization reactions. [0003] The hydrocracking catalyst is composed of a hydrogenation component and an acidic component. The two are added in a certain proportion as required to balance the hydrogenation and cracking performance. Its function is to ful...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16B01J37/03B01J37/08B01J37/20B01J35/10C10G47/20
CPCB01J29/166B01J37/031B01J37/082B01J37/20B01J35/1019B01J35/1038B01J35/1061C10G47/20
Inventor 王继锋刘东香王海涛徐学军冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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