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Hydrotreating catalyst as well as preparation method and application thereof

A technology for hydrotreating and catalyst, applied in the field of catalysis, can solve the problems of limited catalytic performance, low utilization rate and limited effect of the catalyst.

Pending Publication Date: 2020-11-17
CNOOC OIL & PETROCHEMICALS CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 the utilization rate is not high, so the effect of improving the catalytic performance of the catalyst is also limited.

Method used

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  • Hydrotreating catalyst as well as preparation method and application thereof
  • Hydrotreating catalyst as well as preparation method and application thereof

Examples

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preparation example Construction

[0058] 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:

[0059] The carrier is uniformly mixed with the solution of the Ni-containing compound and the W-containing compound to obtain the mixture A, which is dried or calcined to obtain the hydrotreating catalyst.

[0060] 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, It is preferably one or more of Ni nitrates, acetates, carbonates, and basic carbonates.

[0061] In yet another preferred example, the mixing method is joint impregnation or stepwise impregnation. There is no requirement for the impregnation sequence of each component, as long as the impregnation can be realized.

[0062] In yet ano...

Embodiment 1

[0083] The present embodiment is the carrier of preparation catalyst, comprises the following steps:

[0084] (1) Take 200g of γ-Al 2 o 3 powder, impregnated in equal volume into 195mL magnesium solution containing 38.5g magnesium nitrate hexahydrate, 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 is soaked in 135mL aqueous solution containing 18g citric acid, dried at 120°C, and roasted in a nitrogen atmosphere at 225°C for 3 hours (C element content: 3.2%).

[0085] (2) Mix the above 150g powder with 72.5g pseudo-boehmite at a mass ratio of 3:1 (calculated on alumina dry basis). Then in the mixed powder, add 6.8g of scallop powder, mix evenly, weigh 6.4mL of nitric acid and water to make 174mL solution, add this solution into 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 for 3 hours...

Embodiment 2

[0087] The present embodiment is the carrier of preparation catalyst, comprises the following steps:

[0088] (1) Take 200g of γ-Al 2 o 3 powder, mixed with 300mL of magnesium-containing solution containing 56g of magnesium nitrate hexahydrate for beating, then filtered, and dried at 140°C for 3 hours to obtain γ-Al containing Mg 2 o 3 pink. Weigh 130g of γ-Al containing Mg 2 o 3 The powder is soaked in saturated 112mL aqueous solution containing 32.5mL ethylene glycol, dried at 120°C, and calcined in a nitrogen atmosphere at 250°C for 2.5 hours (C element content: 6.1%). .

[0089] (2) Mix the above 150g powder with 72.5g of pseudo-boehmite at a mass ratio of 3:1 (calculated on alumina dry basis). Then in the mixed powder, add 6.5g of scallop powder, mix evenly, weigh 6.8mL 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 th...

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Abstract

The invention discloses a hydrotreating catalyst. The hydrotreating catalyst comprises a metal active component and a carrier loading the metal active component. The metal active component comprises WO3 and NiO, the structure of the carrier comprises MgO and a pore channel-containing metal oxide matrix, and the MgO is uniformly dispersed in the pore channel-containing metal oxide matrix, and at least most of MgO is uniformly dispersed on the pore passage surface of the pore passage-containing metal oxide matrix. The hydrotreating catalyst has high desulfurization and denitrification activity and coking resistance, and is especially suitable for the hydrofining process of light distillate oil and middle distillate oil with the purposes of hydrodesulfurization, hydrodenitrification and olefin saturation. 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] With the aggravation of heavy and inferior crude oil in the world and the increasingly stringent environmental protection regulations, the task of the oil refining industry to produce clean fuels is getting heavier and heavier. Hydrofining technology can effectively remove sulfur, nitrogen, oxygen and other heteroelements contained in oil by hydrogenolysis, which can not only meet the quality requirements of vehicle fuel oil, but also meet the needs of downstream processing. The most commonly used oil cleaning technology in refineries. At this stage, my country is vigorously promoting the adjustment of energy structure. New energy and other biomass fuels such as ethanol gasoline will gradually occupy part of the automobile energy market, forcing most of the napht...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J35/02C10G45/08
CPCB01J23/888B01J23/002C10G45/08C10G2300/202B01J2523/00B01J35/40B01J2523/22B01J2523/31B01J2523/69B01J2523/847
Inventor 高杨辛靖张海波王文辰陈松吴颖侯章贵耿付海陈新国
Owner CNOOC OIL & PETROCHEMICALS CO LTD
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