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A kind of preparation method of silicon-containing hydrodemetallization catalyst

A technology for hydrodemetallization and catalyst, which can be used in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve problems such as low utilization of macropores

Active Publication Date: 2018-10-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The active metal component of the residual oil hydrodemetallization catalyst prepared by the above method is evenly distributed in the macropores and small pores of the carrier, resulting in a low utilization rate of the macropores. In addition, the hydrothermal stability of the carrier needs to be further improved

Method used

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  • A kind of preparation method of silicon-containing hydrodemetallization catalyst
  • A kind of preparation method of silicon-containing hydrodemetallization catalyst
  • A kind of preparation method of silicon-containing hydrodemetallization catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Take 55g of industrial ammonium heptamolybdate, put it in ammonia water, stir until there is no insoluble matter, then add 25g of industrial basic nickel carbonate, stir until there is no insoluble matter, and make MoO 3 10 g / 100 ml, NiO1.2 g / 100 ml molybdenum-nickel-ammonia active metal salt solution. The immersion solution with different concentrations can be prepared by adjusting the addition amount of ammonium heptamolybdate and basic nickel carbonate according to the needs.

[0032] Weigh 8.6 grams of carbon black powder with a particle size of 800 mesh (the particles can pass through the 800 mesh sieve but not the 1000 mesh sieve) and place it in the spray rolling pot. The carbon black powder in the pot sprays and dips and contains molybdenum oxide 0.5 gram, the active metal impregnation solution 2.6ml of nickel oxide 0.04 gram, then continues to spray and dip the ethanolic solution 3.4ml of tetraethyl orthosilicate containing silicon dioxide 0.06 gram.

[0033]W...

Embodiment 2

[0038] With embodiment 1, just the particle diameter of carbon black powder I is 1000 orders (particle can pass through 1000 mesh sieves but cannot pass through 1340 mesh sieves), and weight is 14.3 grams. The active component impregnating liquid contains 0.8 grams of molybdenum oxide and 0.05 g of nickel oxide, and the amount of the active component impregnating liquid is 5.7 ml. The silicate solution contains 0.1 g of silicon dioxide, and the dosage of the silicate solution is 4.3 ml. The particle size of the carbon black powder II is 300 mesh (the particles can pass through the 300 mesh sieve but not the 325 mesh sieve), and the weight is 8.6 grams. The active component impregnating liquid contains 0.5 g of molybdenum oxide and 0.03 g of nickel oxide, and the amount of the active component impregnating liquid is 3.4 ml. The silicate solution contains 0.04 grams of silicon dioxide, and the dosage of the silicate solution is 4.3ml. The heat treatment atmosphere is ammonia, ...

Embodiment 3

[0040] With embodiment 1, just the particle diameter of carbon black powder I is 600 orders (particle can pass through 600 mesh sieves but cannot pass through 800 mesh sieves), and weight is 7.2 grams. The active component impregnating solution contains 0.6 grams of molybdenum oxide and 0.03 grams of nickel oxide, and the amount of the active component impregnating solution is 3.6 ml. The silicate solution contains 0.07 grams of silicon dioxide, and the dosage of the silicate solution is 3.6ml. Carbon black powder II has a particle size of 500 mesh (particles can pass through a 500 mesh sieve but not a 600 mesh sieve), and weighs 7.2 grams. The active component impregnating solution contains 0.4 grams of molybdenum oxide and 0.02 grams of nickel oxide, and the amount of the active component impregnating solution is 3.5 ml. The silicate solution contains 0.05 g of silicon dioxide, and the dosage of the silicate solution is 3 ml. The inert atmosphere is argon, the pressure of ...

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Abstract

The invention discloses a preparation method of a silicon-containing hydrogenated demetalization catalyst. The preparation method comprises the following steps that 1, a physical pore expanding agent I is steeped in a silicon-containing solution I and hydrogenated active component steeping liquid I separately, a physical pore expanding agent II is steeped in a silicon-containing solution II and hydrogenated active component steeping liquid II separately, and the steeped physical pore expanding agent I and the steeped physical pore expanding agent II are subjected to sealed heat treatment for standby application; 2, the physical pore expanding agent I and the physical pore expanding agent II which are obtained in the step 1, pseudo-boehmite dry glue powder, a chemical pore expanding agent, an extrusion aid and a peptizing agent are mixed and kneaded into a plasticizer, extruding, drying and calcining are conducted, and a modified aluminum oxide carrier containing the active components and silicon dioxide is prepared; 3, the modified aluminum oxide carrier is loaded with the remaining hydrogenated active components, drying and calcining are conducted, and then the silicon-containing hydrogenated demetalization catalyst is prepared. According to the catalyst prepared through the method, the content of active metals is relatively high at macropores and relatively low at micropores, the hydrothermal stability of macropores is obviously improved, and high activity and long-cycle operation stability are achieved.

Description

technical field [0001] The invention relates to a preparation method of a silicon-containing hydrodemetallization catalyst. Background technique [0002] With the increasing requirements for deep processing of raw materials worldwide, the main energy structure is gradually developing in the direction of macromolecules and high carbon, especially for my country where crude oil is generally heavy. In order to effectively solve the problems of excessive diffusion resistance of heavy oil components in the catalyst pores, heavy metal impurity deposition and coking caused by catalyst activity decline or deactivation, it is urgently required that the alumina carrier widely used in the petrochemical industry has a large pore volume and The characteristics of large aperture. The large pore size is conducive to the diffusion of macromolecular compounds into the catalyst particles, and the large pore volume is conducive to improving the ability to accommodate metals or coke. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883C10G45/08
Inventor 季洪海王少军凌凤香沈智奇杨卫亚郭长友王丽华
Owner CHINA PETROLEUM & CHEM CORP