Method for preparing zirconium-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 the problems of low utilization rate of macropores

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

AI Technical Summary

Problems solved by technology

[0007] The active metal components of the residual oil hydrodemetallization catalyst prepared by the above method are relatively uniformly distributed in the macropores and small pores of the carrier, resulting in a low utilization rate of the macropores

Method used

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  • Method for preparing zirconium-containing hydrodemetallization catalyst
  • Method for preparing zirconium-containing hydrodemetallization catalyst
  • Method for preparing zirconium-containing hydrodemetallization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 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.

[0033] Weigh 4.3 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 is spray-soaked with the mode of saturated spray immersion and contains molybdenum oxide 0.5 gram, the active metal impregnation solution of nickel oxide 0.2 gram, and the carbon black powder after immersion is dried 3 hours at 110 ℃. Put the dried carbon black po...

Embodiment 2

[0038] With embodiment 1, just carbon black powder I weight is 7.2 grams, and particle diameter is 600 orders (particle can pass through 600 mesh sieves but cannot pass through 800 mesh sieves), contains molybdenum oxide 0.6 gram in active component I, nickel oxide 0.3 grams, zirconium-containing solution I contains 0.5 grams of zirconia, carbon black powder II weighs 5.7 grams, and has a particle size of 400 mesh (the particles can pass through the 400-mesh sieve but not the 500-mesh sieve), and the active component II Containing 0.2 gram of molybdenum oxide, 0.04 gram of nickel oxide, containing 0.2 gram of zirconia in the zirconium-containing solution II, the addition of polyethylene glycol solution is 43 grams to obtain catalyst C2 of the present invention, this catalyst MoO 3 The mass percentage is 10.8wt%, the NiO mass percentage is 1.44wt%, and the zirconia mass percentage is 0.7wt%.

Embodiment 3

[0040] With embodiment 1, just carbon black powder I weight is 5.7 grams, and particle diameter is 1000 orders (particle can pass through 1000 mesh sieve holes but can not pass through 1340 mesh sieve holes), contains molybdenum oxide 0.4 gram in active component I, nickel oxide 0.1 g, zirconium-containing solution I contains 0.6 g of zirconia, carbon black powder II weighs 8.6 g, and has a particle size of 500 mesh (the particles can pass through a 500-mesh sieve but not a 600-mesh sieve), and the active component II Containing 0.3 gram of molybdenum oxide, 0.05 gram of nickel oxide, containing 0.1 gram of zirconia in the zirconium-containing solution II, the addition of polyethylene glycol solution is 100 grams to obtain the catalyst C3 of the present invention, the catalyst MoO 3 The mass percentage is 10.7 wt%, the mass percentage of NiO is 1.35 wt%, and the mass percentage of zirconia is 0.7 wt%.

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Abstract

The invention discloses a method for preparing a zirconium-containing hydrodemetallization catalyst. The method comprises the steps of 1, impregnating a physical pore-enlarging agent I in hydrogenation activity component impregnation liquid I and zirconium-containing solution I respectively, impregnating a physical pore-enlarging agent II in hydrogenation activity component impregnation liquid II and zirconium-containing solution II respectively, and drying the impregnated physical pore-enlarging agent I and physical pore-enlarging agent II for use; 2, conducting mix-kneading on the physical pore-enlarging agent I and physical pore-enlarging agent II obtained from step 1 and pseudo-boehmite dry gelatine powder, chemical pore-enlarging agent, extrusion aid and peptizing agent to form a plasticizer, conducting band extrusion and drying, roasting dried materials in the nitrogen atmosphere, and then conducting roasting in the air to obtain a modified alumina supporter; 3, impregnating the modified alumina supporter obtained in step 2 in hydrogenation activity component impregnation liquid III, and conducting drying and roasting to obtain the zirconium-containing hydrodemetallization catalyst. The content of active metal in the catalyst prepared with the method is relatively high at the positions of large pores and is relatively low at the positions of small pores, and the utilization rate of large pores is increased remarkably. The hydrodemetallization catalyst has high activity and long-term operation stability.

Description

technical field [0001] The invention relates to a preparation method of a zirconium-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. [000...

Claims

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Application Information

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Patent Type & Authority Applications(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
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