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A kind of hydrodemetallization catalyst and its preparation method and application

A technology for hydrodemetallation and hydrogenation catalyst, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problem of not having good metal removal activity and asphaltene removal activity, etc., to achieve the effect of high metal removal rate and asphaltene removal rate

Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the existing hydrodemetallization catalysts cannot have both good metal removal activity and asphaltene removal activity, and provide a catalyst that can have both good metal removal activity and asphaltene removal activity. Deactivated hydrodemetallization catalyst and its preparation method and application

Method used

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  • A kind of hydrodemetallization catalyst and its preparation method and application
  • A kind of hydrodemetallization catalyst and its preparation method and application
  • A kind of hydrodemetallization catalyst and its preparation method and application

Examples

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preparation example Construction

[0025]According to the present invention, in the preparation method of the modified hydrogenation catalyst carrier, the type of the carrier can be a conventional choice in the art, for example, it can be alumina, or it can be alumina and silica, titania and A mixture of at least one of zirconia. Wherein, the alumina may be, for example, at least one of γ-alumina, η-alumina, θ-alumina, δ-alumina and χ-alumina. The above-mentioned carriers can be obtained commercially, or can be prepared according to various methods known to those skilled in the art. For example, the alumina carrier can be prepared by calcining the alumina precursor to convert it into at least one of γ-alumina, η-alumina, θ-alumina, δ-alumina and χ-alumina . If necessary, before and / or after calcination, the alumina precursor can be shaped to prepare a shape suitable for actual operation (such as spherical shape, flake shape, bar shape, etc.). The forming can be carried out according to conventional methods i...

preparation example 1

[0059] Take by weighing 2000 grams of dry rubber powder produced by Changling Catalyst Factory (the dry basis is 73% by weight, wherein the content of pseudoboehmite is 68% by weight, the content of alumina trihydrate is 5% by weight, and the balance is amorphous alumina ), 80 grams of scallop powder (product of Henan Lankao Tianjing Rubber Factory), 60g of hydroxymethyl cellulose and 36g of carbon black and mix evenly, then add 2400 milliliters of aqueous solution containing 32g of nitric acid, and extrude on a plunger extruder Butterfly shaped wet strips with an outer diameter of 1.4mm. Then the butterfly-shaped wet strip was dried at 120° C. for 4 hours, and then calcined at 900° C. for 3 hours to obtain carrier Z. Measured by mercury porosimetry, carrier Z has a pore volume of 0.78mL / g and a specific surface area of ​​142m 2 / g, the pore structure presents a bimodal distribution, in which the 5nm-20nm pores account for 55% of the total pore volume, and the 100nm-300nm por...

Embodiment 1

[0061] This example is used to illustrate the hydrodemetallization catalyst and its preparation method of the present invention.

[0062] (1) Take 200 grams of the carrier Z prepared by Preparation Example 1, first hydrothermally treat the carrier at 70° C. for 24 hours, and then use 165 ml of carrier Z with a temperature of 50° C. containing 15 g / L H 3 BO 3 The aqueous solution (pH value is 6) is saturated and impregnated for 1 hour, and then dried at 100 ° C for 3 hours to obtain a carrier loaded with component B;

[0063] (2) Put the carrier loaded with component B obtained in step (1) in 140 milliliters of 50°C containing 15 g / L NH 4 F was immersed in an aqueous solution (pH value of 11) for 1 hour, then dried at 120° C. for 3 hours, and then calcined at 400° C. for 3 hours to obtain the modified hydrogenation catalyst carrier S1.

[0064] (3) Get 200 grams of carrier S1, use 190 milliliters of molybdenum oxide and basic cobalt carbonate mixed solution (wherein, with MoO...

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Abstract

The present invention relates to a hydrogenation and metal removing catalyst, which contains an active metal component and a modified hydrogenation catalyst carrier, wherein the modified hydrogenation catalyst carrier preparation method comprises: repeatedly and sequentially performing impregnating and drying on a carrier being subjected to hydrothermal treatment, and calcining the finally obtained dried product. The invention further provides a preparation method and applications of the hydrogenation and metal removing catalyst. According to the present invention, by using the hydrogenation and metal removing catalyst, the high metal removal rate and the high asphaltene removal rate in the heavy oil hydrotreating can be obtained.

Description

technical field [0001] The invention relates to a hydrogenation demetallization catalyst and its preparation method and application. Background technique [0002] Asphaltenes, colloids, and polycyclic aromatic hydrocarbons in heavy oil are coking precursors. Due to their complex structure, large molecules, strong polarity, and highly condensed aromatic nucleus structure, they are rich in metals (nickel, vanadium) and sulfur, Heteroatoms such as nitrogen, so the diffusion resistance is large, and the hydrogenation reaction performance is poor. Therefore, it is necessary to convert asphaltenes and colloids as much as possible through hydrogenation to improve the removal rate of metals and heteroatoms in heavy oil and the economical efficiency of heavy oil processing. [0003] The existing catalysts with high demetallization activity often have low asphaltene removal rate. The reason for such problems may be that the hydrogenation activity and acidity of the existing hydrodeme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J23/883B01J37/02B01J37/08C10G45/08
CPCB01J23/882B01J23/883B01J37/0205B01J37/0207B01J37/08C10G45/08C10G2300/205
Inventor 贾燕子赵新强杨清河聂红邓中活刘涛
Owner CHINA PETROLEUM & CHEM CORP
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