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Catalyst for simultaneous catalytic reduction of both NO and SO2 through CO and preparation method and application of catalyst

A catalyst and oxide technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve the effects of good adsorption performance, easy access, and high catalytic activity

Inactive Publication Date: 2013-12-25
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The γ-type alumina-supported metal oxide catalyst has the advantages of suitable pore size distribution, high specific surface area, good adsorption performance, good mechanical strength, acidic surface and good thermal stability. γ-type alumina patent, but there is no domestic patent report on loading transition metal oxides on γ-type alumina as a catalyst for simultaneous desulfurization and denitrification of flue gas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 10%Cu / γ-Al 2 O 3

[0027] According to the loading capacity of the active components of the catalyst, weigh 1.8875g of Cu(NO 3 ) 2 ·3H 2 O and 5g γ-Al 2 O 3 powder, add 100ml deionized water to prepare a mixed solution, stir in a constant temperature water bath at 40°C for 2 hours to mix the carrier and nitrate evenly, leave it in the air for 24 hours, put it in a rotary evaporator at 80°C and evaporate in vacuum until the water evaporates dry, the obtained catalyst precursor was dried in an electric blast drying oven at 110°C for 12h, and then placed in a muffle furnace for roasting at 450°C for 3h to decompose copper nitrate to form copper oxide active components, and obtained 10% (Metal mass as a percentage of carrier mass) Cu / γ-Al 2 O 3 catalyst.

[0028] After taking it out, cool it and press it into tablets. The pressure is generally 20MP, and the catalyst of 20-40 meshes is sieved out.

[0029] Take 0.4g of catalyst and place it in...

Embodiment 2

[0030] Example 2 4%Cu-6%Ni / γ-Al 2 O 3

[0031]According to the loading capacity of the active components of the catalyst, weigh 0.755g of Cu(NO 3 ) 2 ·3H 2 O and 1.47g of Ni(NO 3 ) 2 ·6H 2 O and 5g γ-Al 2 O 3 powder, add 100ml deionized water to prepare a mixed solution, stir in a constant temperature water bath at 40°C for 2 hours to mix the carrier and nitrate evenly, leave it in the air for 24 hours, put it in a rotary evaporator at 80°C and evaporate in vacuum until the water evaporates dry, the obtained catalyst precursor was dried in an electric blast drying oven at 110°C for 12h, and then placed in a muffle furnace for roasting at 450°C for 3h to decompose copper nitrate and nickel nitrate to form oxide active components, and obtained 4%Cu-6%Ni (Metal mass as a percentage of carrier mass) / γ-Al 2 O 3 catalyst.

[0032] After taking it out, cool it and press it into tablets. The pressure is generally 20Mp, and the catalyst of 20-40 meshes is sc...

Embodiment 3

[0034] Example 3 8%Ni- 2%Fe / γ-Al 2 O 3

[0035] According to the loading capacity of the active components of the catalyst, weigh 1.96g of Ni(NO 3 ) 2 ·6H 2 O, 0.72g of Fe(NO 3 ) 3 9H 2 O and 5g γ-Al 2 O 3 powder, add 100ml of deionized water to prepare a mixed solution, stir in a constant temperature water bath at 40°C for 2 hours to mix the carrier and nitrate evenly, leave it in the air for 24 hours, put it in a rotary evaporator at 80°C and evaporate in a vacuum until the water evaporates dry, the obtained catalyst precursor was dried in an electric blast drying oven at 110°C for 12h, and then placed in a muffle furnace for 3h roasting at 450°C to decompose nitrates to generate oxide active components, and obtained 8%Ni- 2%Fe (Metal mass as a percentage of carrier mass) / γ-Al 2 O 3 catalyst.

[0036] After taking it out, cool it and press it into tablets. The pressure is generally 20Mp, and the catalyst of 20-40 meshes is screened out.

[0037] T...

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PUM

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Abstract

The invention relates to a preparation method and an application of a catalyst, wherein a gamma-type aluminium oxide serves as a carrier to load a metallic oxide catalyst. The catalysts related in the invention are prepared thorough a dipping method. The catalyst has the advantages that the gamma-type aluminium oxide catalyst has the advantages of adjustable pore structure, larger specific surface area, better absorbability, higher mechanical strength, acidity of the surface, good thermal stability and the like. The catalyst is used to remove the NO and the SO2 in the smoke at the same time, specifically the NO and the SO2 in the FCC (fluid catalytic cracking) smoke. According to the invention, the CO is used as a reducing agent to conduct catalytic reduction on the NO and the SO2 in the smoke.

Description

technical field [0001] The invention belongs to a catalyst and its preparation method and application, specifically applied to the catalytic reduction of NO and SO at the same time of CO 2 , The preparation method and application of gamma alumina-supported metal oxide catalyst. Background technique [0002] Due to the rapid economic development of our country and the shortage of oil-based energy resources, our country has become a net importer of oil since the 1990s. Currently, we are suffering from the high price of crude oil in the international market. , sulfur-containing and imported sulfur-containing or even high-sulfur heavy oil. For precious oil resources, even low-quality high-sulfur heavy oil needs to be further processed to increase its added value. In the deep processing of petroleum, the fluid catalytic cracking (FCC) process is a crucial process. During the upgrading process, the nitrogen and sulfur elements in the raw oil are converted into nitrogen oxides a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J23/755B01J35/10B01D53/60B01D53/86
Inventor 任晓光李鹏刘怡宁
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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