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Hydrotreating catalyst, preparation method and application thereof

A hydrogenation treatment and catalyst technology, applied in the field of catalysis, can solve the problems of poor denitrification effect, high metal content, limited effect, etc.

Pending Publication Date: 2020-11-20
CHINA NAT OFFSHORE OIL CORP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN100998952A patent provides a coker gasoline hydrofinishing catalyst containing W, Mo, Ni, P. The catalyst has high metal content and has good low-temperature activity in olefin saturation during coker gasoline hydrofinishing processing, which reduces the temperature of the reactor, etc. Advantages, but this method is not effective in desulfurization and denitrification at lower temperatures
[0006] However, the researchers of the present invention found in the research that in the aforementioned existing research methods, the actual effect of Mg is limited, and thus the effect of improving the catalytic performance of the catalyst is also limited.

Method used

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  • Hydrotreating catalyst, preparation method and application thereof
  • Hydrotreating catalyst, preparation method and application thereof

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preparation example Construction

[0053] In yet another aspect, according to yet another embodiment of the present invention, a method for preparing a hydroprocessing catalyst is provided, the method comprising the steps of:

[0054] The carrier is uniformly mixed with a solution of a Ni-containing compound, a Co-containing compound and a W-containing compound to obtain a mixture A, which is dried or calcined to obtain the hydrogenation treatment catalyst.

[0055] In some preferred examples, the W-containing compound is selected from one or more of ammonium tungstate, ammonium metatungstate, ammonium paratungstate, and ethyl ammonium metatungstate; the Ni-containing compound is a water-soluble salt of Ni, Preferably one or more of Ni nitrates, acetates, carbonates, and basic carbonates; the Co-containing compound is a water-soluble salt of Co, preferably Co nitrates, acetates One or more of , carbonate, and basic carbonate.

[0056] In yet another preferred example, the mixing method is joint impregnation or...

Embodiment 1

[0080] The present embodiment is the carrier of preparation catalyst, comprises the following steps:

[0081] (1) Take 200g of γ-Al 2 o 3 powder, mixed with 350mL magnesium nitrate hexahydrate solution containing 76.8g for beating, mixed thoroughly, and dried at 120°C for 3h to obtain Mg-containing γ-Al 2 o 3 pink. Weigh 150g of γ-Al containing Mg 2 o 3 The powder was saturated and soaked in 143 mL of aqueous solution containing 20 g of glucose, dried at 120 ° C, and roasted in an argon atmosphere at 225 ° C for 3 hours (the content of C in the powder was 4.9%).

[0082] (2) The above powder was mixed with 73.6g of pseudo-boehmite at a mass ratio of 2:1 (on an alumina dry basis). Then in the mixed powder, add 5.5g of scallop powder, mix evenly, weigh 6.2mL of nitric acid and water to make 141mL solution, add this solution to the mixed powder under stirring, knead, and extrude to make a diameter of 1.6mm Clover-shaped wet strips, followed by drying the wet strips at 120°...

Embodiment 2

[0084] The present embodiment is the carrier of preparation catalyst, comprises the following steps:

[0085] (1) Take 300g of γ-Al 2 o 3 powder, mixed with 425mL of magnesium-containing solution containing 111g of magnesium nitrate hexahydrate, and then dried at 140°C for 3 hours to obtain Mg-containing γ-Al 2 o 3 pink. 140g of γ-Al containing Mg 2 o 3 The powder is soaked in saturated 126mL aqueous solution containing 33g of glucose, dried at 120°C, and roasted in a nitrogen atmosphere at 250°C for 2.5 hours (the content of C element in the powder is 7.8%).

[0086] (2) Mix the above powder with 73.6g of pseudo-boehmite at a ratio of 2:1 (calculated on a dry basis of alumina). Then in the mixed powder, add 5.7g of scallop powder, mix evenly, weigh 5.6mL of nitric acid and water to make 101mL solution, add this solution to the mixed powder under stirring, knead, and extrude to make a diameter of 1.6mm Clover-shaped wet strips, followed by drying the wet strips at 120°C...

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Abstract

The invention discloses a hydrotreating catalyst, which comprises a metal active component and a carrier for loading the metal active component, wherein the metal active component comprises WO3, NiO and CoO, the structure of the carrier comprises MgO and a metal oxide matrix containing pore channels, MgO is uniformly dispersed in the metal oxide matrix containing pore channels, and at least most MgO is uniformly dispersed on the surfaces of the pore channels of the metal oxide matrix containing pore channels. The hydrotreating catalyst has high desulfurization, denitrification and hydrogenation saturation properties under a low-temperature condition. The invention also discloses a preparation method and application of the hydrotreating catalyst.

Description

technical field [0001] The invention relates to the technical field of catalysis. More specifically, it relates to a hydrotreating catalyst and its preparation method and application. Background technique [0002] Catalytically reformed gasoline has the characteristics of high octane number, low olefin content, high aromatic content and no sulfur, and is an ideal clean gasoline component. In recent years, with the deterioration of crude oil and the impact of blending catalytic gasoline, the sulfur / nitrogen content, metal content and diene content of catalytic reforming raw materials have increased significantly, seriously affecting the activity of catalytic reforming catalysts . Therefore, the pretreatment of inferior raw materials to meet the requirements of catalytic reforming is a key factor affecting the production capacity of catalytic reforming. Pre-hydrotreatment can effectively remove harmful substances in inferior raw materials, making them meet the requirements ...

Claims

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Application Information

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IPC IPC(8): B01J23/888C10G45/08
CPCB01J23/888B01J23/002C10G45/08B01J2523/00C10G2300/202B01J2523/22B01J2523/69B01J2523/845B01J2523/847
Inventor 辛靖高杨赵晨曦曹孙辉杨国明宋宇朱元宝陈新国
Owner CHINA NAT OFFSHORE OIL CORP
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