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Hydrodemetallization catalyst and preparation method and application thereof

A technology for hydrodemetallization and hydrogenation catalyst, which is applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc. Removal activity and asphaltene removal activity, etc., to achieve the effect of high metal removal rate and asphaltene removal rate

Active Publication Date: 2017-05-10
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

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  • Hydrodemetallization catalyst and preparation method and application thereof
  • Hydrodemetallization catalyst and preparation method and application thereof
  • Hydrodemetallization catalyst and preparation method and application thereof

Examples

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preparation example Construction

[0042] The present invention also provides a preparation method of the above hydrodemetallization catalyst, the method comprising:

[0043] (1) impregnating the hydrothermally treated carrier in an alkaline first solution containing a metal promoter compound providing the metal promoter, and then drying to obtain a carrier loaded with the metal promoter;

[0044] (2) The above-mentioned carrier loaded with the metal additive is impregnated in an acidic second solution containing an acidic additive compound providing the acidic additive, and then dried and calcined to obtain the modified hydrogenated Catalyst carrier;

[0045] (3) impregnating the modified hydrogenation catalyst carrier in a third solution containing the compound providing the active metal component, followed by drying and calcining.

[0046] According to the present invention, the above steps (1) and (2) prepare the modified hydrogenation catalyst carrier.

[0047] Wherein, in step (1), although as long as t...

preparation example 1

[0075] 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 ) and 60 gram sage powder (Henan Lankao tianjing rubber factory product) and mix homogeneously, then add 2400 milliliters of aqueous solution containing 32g nitric acid, and extrude into a butterfly-shaped wet bar with an outer diameter of 1.4mm on a plunger extruder. 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 0.83mL / g and a specific surface area of ​​128m 2 / g, the pore structure presents a bimodal distribution, in which 5nm-20nm pores account for 45% of the total pore volume, and 100nm-300nm pores account for 23% of the total pore volume.

Embodiment 1

[0077] This example is used to illustrate the hydrodemetallization catalyst and its preparation method of the present invention.

[0078] (1) Take 200 grams of the carrier Z prepared in Preparation Example 1, firstly treat the carrier at 135° C. for 12 hours with hydrothermal treatment, and then use 165 milliliters of carrier Z with a temperature of 40° C. containing 15 grams / liter of Mg(NO 3 ) 2 The aqueous solution (pH value is 11) is saturated and impregnated for 1 hour, and then dried at 200 ° C for 8 hours to obtain a carrier loaded with metal additives;

[0079] (2) The carrier obtained in step (1) is loaded with metal additives in 145 milliliters of 40 DEG C containing 10 g / L H 3 BO 3 The aqueous solution (pH value is 6) was immersed 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 SZ1.

[0080] (3) Get 200 grams of carrier SZ1, use 190 milliliters of molybdenum oxide and basic c...

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Abstract

The invention relates to a hydrodemetallization catalyst comprising an active metal component and a modified hydrogenation catalyst support; the modified hydrogenation catalyst support includes a support, and a metal aid and an acid aid supported on the support, the metal aid and the acid aid are distributed on the support in a layered manner, the metal acid acts as a shell layer, the acid aid acts as a core layer, the metal aid is family IA metal component and / or IIA metal component, and the acid aid is selected from at least one of the components F, P and B. The invention also provides a preparation method and application of the hydrodemetallization catalyst. By using the hydrodemetallization catalyst of the application, it is possible to arrive at high demetallization rate and asphaltene removal rate in the hydrogenation of heavy oil.

Description

technical field [0001] The invention relates to a hydrodemetallization catalyst, a preparation method and application thereof. 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 hydrodemetalliz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882B01J23/887C10G45/08
CPCB01J23/002B01J23/882B01J23/8872B01J2523/00C10G45/08C10G2300/205C10G2300/206C10G2300/70B01J2523/68B01J2523/845B01J2523/22B01J2523/31B01J2523/847B01J2523/13B01J2523/23
Inventor 贾燕子赵新强刘学芬杨清河李大东董凯戴立顺
Owner CHINA PETROLEUM & CHEM CORP
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