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A kind of hydrocracking catalyst and its production method

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of hydrogenation activity Metal distribution, not well controlled hydrogenation active metal distribution, not conducive to the problem of equal activity

Active Publication Date: 2021-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] 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

[0065] Dissolve nickel chloride and ammonium metatungstate solution in deionized water respectively, add 60 grams of ethylenediamine tetramethylene phosphonic acid, and prepare mixed solution A. The weight concentration of Ni in mixed solution A is 42g / L, W to 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 25g / L, Si is SiO 2 The weight concentration of meter is 35g / L. Deionized water is added in the reaction tank, and the weight concentration is based on Al 2 o 3 38g / L sodium metaaluminate solution and mixed solution A are added into the reaction tank in parallel flow, the gelling temperature is kept at 62°C, the pH value is controlled at 7.6 during the concurrent gelling reaction process,...

Embodiment 2

[0067] 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 49 grams of hydroxyethylidene diphosphine 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 deionized water in the reaction tank, the weight concentration is Take Al 2 o 3 50g / L sodium metaaluminate solution and mixed solution A are added into the reaction tank in parallel flow, the gelling temperature is kept at 50°C, the pH value is controlled at 7.9 during the concurrent gelling reaction process, and the gelling time is controlled at 0.9 hours , Generate slurry I containing nickel, tungsten, aluminum, zirconium precipitate. The obtained sediment slurry I was aged, the aging temperature was 76° C., the aging pH value was controlled ...

Embodiment 3

[0069] According to the method of Example 1, according to the component content ratio of catalyst C in Table 1, nickel chloride and ammonium metatungstate are added in the dissolution tank 1, and 44 grams of aminotrimethylene phosphonic acid are added to prepare mixed solution A , add aluminum chloride, ammonium metatungstate solution deionized water in dissolving tank 2, add water glass, prepare mixed solution B, add deionized water in the reaction tank, the weight concentration is based on Al 2 o 3 Add 42g / L sodium metaaluminate solution and mixed solution A into the reaction tank in parallel, keep the gelling temperature at 45°C, control the pH value at 7.6 during the concurrent gelling reaction, and control the gelling time at 1.2 hours , Generate slurry I containing nickel, tungsten, and aluminum precipitates. The obtained precipitate slurry I was aged, the aging temperature was 72° C., the aging pH value was controlled at 6.9, and the aging was carried out for 0.7 hours...

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Abstract

The invention discloses a hydrocracking catalyst and a production method thereof. The hydrocracking catalyst is a bulk catalyst, including a hydrogenation active metal component, a carrier component and a heteropolyacid. The catalyst is firstly mixed solution A containing Ni, W, organic additives, and sodium metaaluminate alkaline solution to co-flow for gelation reaction, aging the obtained slurry, and mixing the mixed solution containing W, Si, Al components B and ammonia water are added into the above-mentioned aged slurry in parallel for gelation reaction, after aging, impregnated with heteropolyacid aqueous solution, and then dried, shaped, re-dried, roasted, etc. 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 hydrocracking catalyst for treating heavy hydrocarbons and a production method thereof. 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 i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18B01J27/188B01J35/10C10G47/12
CPCB01J27/188B01J23/002C10G47/12B01J35/635B01J35/633B01J35/647B01J35/615
Inventor 马涛王海涛徐学军王继锋刘东香冯小萍
Owner CHINA PETROLEUM & CHEM CORP