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Preparation method of hydrodemetallization catalyst

A hydrodemetallization and catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of low macropore utilization

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] 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 surface acidity of the carrier needs to be improved so as to improve the catalytic efficiency. Carbon deposition resistance

Method used

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  • Preparation method of hydrodemetallization catalyst
  • Preparation method of hydrodemetallization catalyst
  • Preparation method of hydrodemetallization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 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.

[0037] Weigh 10 grams of carbon black powder I 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 is sprayed and impregnated with an active metal impregnation solution containing 0.5 g of molybdenum oxide and 0.04 g of nickel oxide in a saturated impregnation manner, and the impregnated carbon black powder is dried at 110°C for 3 hours; the dried carbon black powder is p...

Embodiment 2

[0043] With embodiment 1, just the particle diameter of carbon black powder 1 is 1000 orders (particle can pass through 1000 mesh sieve holes but cannot pass through 1340 mesh sieve holes), and weight is 11.4 grams, in the active component dipping liquid of immersion carbon black powder 1 Contains 0.7 grams of molybdenum oxide, 0.03 grams of nickel oxide, and the alkali metal solution is a sodium nitrate solution containing 0.05 grams of sodium oxide. The particle size of the carbon black powder II is 500 mesh (the particles can pass through the 500 mesh sieve but cannot pass through the 600 mesh sieve), and the weight is 7.2 grams. The active component impregnation solution for impregnating the carbon black powder II contains 0.5 grams of molybdenum oxide. 0.02 gram of nickel oxide, and the alkali metal solution is a sodium nitrate solution containing 0.04 gram of sodium oxide. The ammonium salt solution is an ammonium oxalate solution with a mass concentration of 10%. The t...

Embodiment 3

[0045] With embodiment 1, just the particle diameter of carbon black powder 1 is 600 orders (particle can pass through 600 mesh sieves but cannot pass through 800 mesh sieves), and weight is 8.6 grams, in the active component dipping liquid of immersion carbon black powder 1 Containing 0.6 grams of molybdenum oxide and 0.05 grams of nickel oxide, the alkali metal solution is a lithium nitrate solution containing 0.06 grams of lithium oxide. The particle size of the carbon black powder II is 400 mesh (the particles can pass through the 400 mesh sieve but cannot pass through the 500 mesh sieve), and the weight is 5.7 grams. The active component impregnation solution for impregnating the carbon black powder II contains 0.4 grams of molybdenum oxide. 0.01 g of nickel oxide, and the alkali metal solution is a lithium nitrate solution containing 0.02 g of lithium oxide. The ammonium salt solution is an ammonium bicarbonate solution with a mass concentration of 30%. The temperature ...

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Abstract

The invention discloses a preparation method of a hydrodemetallization catalyst. The method includes the following steps that 1, a physical pore-expanding agent I is soaked with an alkali-containing metal element solution I and hydrogenation active component soaking liquid I, a physical pore-expanding agent II is soaked with an alkali-containing metal element solution II and hydrogenation active component soaking liquid II, and the physical pore-expanding agent I and the physical pore-expanding agent II are dried and then soaked with an ammonium salt solution in a spraying mode for use; 2, the physical pore-expanding agent I and the physical pore-expanding agent II obtained in the step 1 are mixed with dry pseudo-boehmite gel powder, a chemical pore-expanding agent, an extrusion aid and a peptizing agent, the mixture is kneaded into plastic, strip extrusion is carried out, a formed material is subjected to heat treatment, the treated material is dried and roasted, and a modified alumina supporter is obtained; 3, the modified alumina supporter is soaked with hydrogenation active component soaking liquid III, and the catalyst is obtained through drying and roasting. The catalyst prepared through the method has a high active metal content at macropores and a low active metal content at micropores, the acid property at macropores is obviously improved, and the anti-carbon capacity of macropores is improved.

Description

technical field [0001] The invention relates to a preparation method of a hydrodemetallization catalyst, in particular to a preparation method of an alkali metal-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 characteristic of large aperture. The large pore size is conducive to the diffusion of macromolecular compounds into the catalyst particles, and the large pore volume...

Claims

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Application Information

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IPC IPC(8): B01J23/887C10G45/08
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
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