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Preparation method of hydrocracking catalyst

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem that the distribution of hydrogenation active metals cannot be well controlled, the distribution of hydrogenation active metals is affected, and the liveness equality problem

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

[0059] Dissolve nickel chloride and ammonium metatungstate solutions in deionized water, add 106 grams of polyacrylic acid (molecular weight: 3000) and 42 grams of hydroxyethylene diphosphonic acid, and prepare a mixed solution A in which Ni is mixed with NiO The weight concentration of meter is 42g / L, W is expressed as WO 3 The weight concentration of meter is 30g / L. Dissolve ammonium metatungstate and aluminum chloride solution in deionized water respectively, add dilute water glass solution to prepare mixed solution B, W in mixed solution B is WO 3 The weight concentration of Al is 24g / L, 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. 500mL deionized water is added in the reaction tank, and the weight concentration is based on Al 2 o 3 The 32g / L sodium metaaluminate solution and solution A are added into the reaction tank in parallel flow, the gelling temperature is kept at 58°C, the pH value ...

Embodiment 2

[0061] According to the method of embodiment 1, press the component content ratio of catalyst B in table 1, add nickel nitrate, ammonium metatungstate, zirconium oxychloride solution in dissolving tank 1, add 90 grams of ethylenediaminetetramethylene Based phosphonic acid, prepare mixed solution A, add ammonium metatungstate, aluminum chloride solution in dissolving tank 2 and dissolve in deionized water, add water glass, prepare mixed solution B, add 700mL deionized water in the reaction tank, put The weight concentration is based on Al 2 o 3 The sodium metaaluminate solution of 38g / L and the mixed solution A are added into the reaction tank in parallel flow, the gelling temperature is kept at 55°C, the pH value is controlled at 7.8 during the concurrent gelling reaction process, and the gelling time is controlled at 40 minutes , Generate slurry I containing nickel, tungsten, aluminum, zirconium precipitate. The obtained sediment slurry I was aged, the aging temperature was...

Embodiment 3

[0063] According to the method of Example 1, according to the component content ratio of catalyst C in Table 1, nickel chloride and ammonium metatungstate were added into the dissolution tank 1, and 69 grams of aminotrimethylene phosphonic acid was added to prepare mixed solution A , add aluminum chloride, ammonium metatungstate solution deionized water in dissolving tank 2, add water glass, prepare working solution B, add 600mL deionized water in the reaction tank, the weight concentration is based on Al 2 o 3 28g / L sodium metaaluminate solution and mixed solution A are added into the reaction tank in parallel flow, the gelling temperature is kept at 55°C, the pH value is controlled at 8.0 during the concurrent gelling reaction process, and the gelling time is controlled at 50 minutes , Generate slurry I containing nickel, tungsten, and aluminum precipitates. The obtained precipitate slurry I was aged, the aging temperature was 76° C., the aging pH value was controlled at 6....

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst. The catalyst is prepared in steps as follows: firstly, a mixed solution A containing Ni and W, an organic aid and a sodium metaaluminate alkaline solution are added in a parallel flow manner for a gelatinization reaction; obtained slurry is aged; a mixed solution B containing components W, Si and Al and ammonia water are added to the aged slurry in a parallel flow manner for a gelatinization reaction, ageing is performed after a turbid liquid of a molecular sieve is added, drying and forming are performed, and the hydrocracking catalyst is obtained. The hydrocracking catalyst is applicable to a 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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IPC IPC(8): B01J29/16B01J35/10C10G11/06
CPCB01J29/166C10G11/06B01J35/617B01J35/635B01J35/633B01J35/615
Inventor 王海涛王继锋徐学军冯小萍刘东香
Owner CHINA PETROLEUM & CHEM CORP
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