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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 the problems that affect catalyst performance, cannot well control the distribution of hydrogenation active metals, and are not conducive to equal activities

Active Publication Date: 2019-07-23
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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PUM

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst. According to the catalyst, a mixed solution A containing Ni and Al and a sodium tungstate alkaline solution are subjected to agelatinization reaction in a parallel flow manner, obtained slurry is aged, a mixed solution B containing Si and Al components and a sodium tungstate alkaline solution are added to the aged slurry ina parallel flow manner for a gelatinization reaction, aging is performed after a suspension of a molecular sieve is added, drying, forming and other steps are performed, and the hydrocracking catalyst is prepared. The hydrocarcking catalyst is applicable to medium oil type hydrocracking catalysts 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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IPC IPC(8): B01J29/16B01J37/03B01J37/08B01J37/20B01J35/10C10G47/20
CPCB01J29/166B01J37/031B01J37/082B01J37/20C10G47/20B01J35/633B01J35/647B01J35/615
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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