Gamma-form alumina loaded metallic oxide catalyst as well as preparation method and application thereof

A technology of alumina loading and oxide, which is applied in chemical instruments and methods, separation methods, and separation of dispersed particles, etc., to achieve strong anti-sintering ability, good thermal stability, and high reactivity.

Inactive Publication Date: 2013-03-13
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The γ-type alumina supported metal oxide catalyst has suitable pore size distribution, high specific surface area, good adsorption performance, good mechanical strength, and the surface has acidity and With the advantages of good thermal stability and other advantages, there have been patents on the preparation of γ-type alumina by different methods, but there is no patent report on loading transition metal oxides on γ-type alumina as a catalyst for simultaneous desulfurization and denitrification of flue gas in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 10%Fe 2 O 3 / γ-Al 2 O 3

[0020] According to the loading capacity of the active components of the catalyst, weigh 2.5299g of Fe (NO 3 ) 3 9H 2 O and 5g of γ-Al 2 o 3 powder, add 100mL deionized water to prepare a mixed solution, stir in a constant temperature water bath at 60°C for 3 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 2h, and then placed in a muffle furnace for roasting at 550°C for 3h to decompose ferric nitrate into Fe 2 o 3 Active ingredient, made 10% Fe 2 o 3 / γ-Al 2 o 3 catalyst.

[0021] After taking it out, cool it and press it into tablets. The pressure is generally 20MPa, and the catalyst of 20-40 meshes is screened out.

[0022] Take 0.4g of catalyst and place it in a fixed bed reactor, and the inner...

Embodiment 2

[0023] Example 2 10%CuO / γ-Al 2 O 3

[0024] According to the loading capacity of the active components of the catalyst, weigh 1.5186g of Cu(NO 3 ) 2 ·3H 2 O and 5g of γ-Al 2 o 3 powder, add 100mL deionized water to prepare a mixed solution, stir in a constant temperature water bath at 60°C for 3 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 2h, and then placed in a muffle furnace and roasted at 550°C for 3h to decompose copper nitrate to form CuO active components and obtain 10% CuO / γ-Al 2 o 3 catalyst.

[0025] After taking it out, cool it and press it into tablets. The pressure is generally 20 MPa, and the catalyst of 20-40 meshes is screened out.

[0026] Take 0.4g of catalyst and place it in a fixed bed reactor, and the inner diameter of the rea...

Embodiment 3

[0027] Example 3 4%Ni- 6%CuO / γ-Al 2 O 3

[0028] According to the loading capacity of the active components of the catalyst, weigh 0.9112g of Cu(NO 3 ) 2 ·3H 2 O, 0.7787g of Ni(NO 3 ) 2 ·6H 2 O and 5g of γ-Al 2 o 3 powder, add 100mL deionized water to prepare a mixed solution, stir in a constant temperature water bath at 60°C for 3 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 in an electric blast drying oven at 110°C for 2h, then place it in a muffle furnace and bake at 550°C for 3h to decompose the nitrate to form a mixed oxide active component of NiO and CuO, and obtain 4 %NiO- 6%CuO / γ-Al 2 o 3 catalyst.

[0029] After taking it out, cool it and press it into tablets. The pressure is generally 20MPa, and the catalyst of 20-40 meshes is screened out.

[0030] Take 0.4g of catalyst and place it in a f...

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Abstract

The invention relates to a gamma-form alumina loaded metallic oxide catalyst as well as a preparation method and application thereof. The gamma-form alumina loaded metallic oxide catalyst is prepared by adopting an immersion method. The particular preparation method is explained in the specification. The gamma-form alumina loaded metallic oxide catalyst disclosed by the invention has the advantages of adjustable pore structure, large specific surface area, good absorption property, high mechanical strength, good surface acidity and heat stability, and the like. The gamma-form alumina loading metallic oxide catalyst disclosed by the invention is used for carrying out simultaneous desulfuration and denitration on a flue gas and catalytic reduction on nitric oxide and sulfur dioxide which are contained in the flue gas by adopting CO as a reducing agent, and is particularly used in the field of processing of an FCC (Fluid Catalytic Cracking) flue gas and the flue gas of a power station boiler.

Description

technical field [0001] The invention belongs to catalysts, preparation methods and applications thereof, in particular to gamma-type alumina-supported metal oxide catalysts for catalytic reduction of flue gas desulfurization and denitrification, preparation methods and applications thereof. 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 nitro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/72B01J23/755B01D53/86B01D53/60
Inventor 任晓光宋永吉李富霞杜云散田晓良
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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