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Industrial organic exhaust gas combustion catalyst and preparation method thereof

A technology for burning catalysts and organic waste gas, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of complex preparation process and reduced catalytic efficiency, and achieve The preparation process is simple, the reaction temperature is low, and the effect of low operating pressure difference

Inactive Publication Date: 2014-10-22
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, not only the preparation process is complicated, but also the catalytic efficiency is easily reduced due to the coating peeling off and the interaction between the active components and the coating during use.

Method used

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  • Industrial organic exhaust gas combustion catalyst and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] Put 40.0g of alumina-coated cordierite honeycomb ceramic carrier in 3% dilute nitric acid solution for 3 hours, take it out and blow off the liquid in the pores with compressed air; then rinse with deionized water until it becomes neutral, and finally at 100 Dry in air at 120°C for 4 hours, and cool down for later use.

[0029] Weigh 6.16gCu(NO 3 ) 2 ·3H 2 O, 6.00g 50%Mn(NO 3 ) 2 , 8.34gFe(NO 3 ) 3 9H 2 O, 2.85gCe(NO 3 ) 4 , 0.35gAgNO 3 , respectively added deionized water to dissolve, mixed to obtain 65ml of active ingredient solution, and then added citric acid to adjust the pH value of the solution to 3. Immerse 20.0g of the surface-treated honeycomb ceramic carrier in the above solution, take it out after soaking for 10 minutes, blow off the remaining liquid in the pores with compressed air, dry it in the air at 100~120°C for 4 hours, and weigh it. The impregnation operation was repeated 4 times; finally, it was baked in air at 500°C for 5 hours to obtain...

Embodiment 2

[0031] Put 40.0g of alumina-coated mullite honeycomb ceramic carrier into 5% dilute nitric acid solution for 1 hour, take it out and blow off the liquid in the pores with compressed air; Dry in air at ~120°C for 4 hours, then cool for later use.

[0032] Weigh 10.56gCu(NO 3 ) 2 ·3H 2 O, 6.00g 50%Mn (NO 3 ) 2、 8.34g Fe(NO 3 ) 3 9H 2 O, 2.35gCe(NO 3 ) 4 , 0.52gAgNO 3 , respectively added deionized water to dissolve, mixed to obtain 70ml of active ingredient solution, and then added citric acid to adjust the pH of the solution to 2. Immerse 20.0g of the surface-treated honeycomb ceramic carrier in the above solution, take it out after immersion for 6 minutes, blow off the remaining liquid in the channels with compressed air, dry it in the air at 100~120°C for 3 hours, and weigh it. The impregnation operation was repeated three times; finally, it was baked in air at 550° C. for 7 hours to obtain a finished catalyst. The loading amount of active components calculated a...

Embodiment 3

[0034] Put 40.0g of alumina-coated cordierite honeycomb ceramic carrier in 5% dilute nitric acid solution for 0.5 hours, take it out and blow off the liquid in the pores with compressed air; then rinse with deionized water until it becomes neutral, and finally at 100 Dry in air at 120°C for 4 hours, and cool down for later use.

[0035] Weigh 5.56gCu(NO3 ) 2 ·3H 2 O, 4.05g50%Mn (NO 3 ) 2、 3.27g Fe(NO 3 ) 3 9H 2 O, 0.85gCe(NO 3 ) 4 , 0.16gAgNO 3 , respectively added deionized water to dissolve, mixed to obtain 60ml of active ingredient solution, and then added citric acid to adjust the pH value of the solution to 3. Immerse 20.0g of the surface-treated honeycomb ceramic carrier in the above solution, take it out after soaking for 10 minutes, blow off the remaining liquid in the pores with compressed air, dry it in the air at 100~120°C for 3 hours, and weigh it. The impregnation operation was repeated 5 times; finally, it was baked in air at 560°C for 7 hours to obtai...

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Abstract

The invention discloses an industrial organic exhaust gas combustion catalyst and a preparation method thereof. Active components of the catalyst are loaded on a carrier through a dipping and roasting process, the active components comprise transition metal oxides comprising CuO, MnO, Fe2O3 and CeO2 and AgO composite oxide, and the carrier is selected from alumina coated cellular ceramic or cellular active alumina. The catalyst is suitable for industrial organic exhaust gas combustion, VOCs in the exhaust gas is one of or a mixture containing more of ethyl acetate, ethyl methyl ketone, butyl acetate isopropanol and propylene glycol methyl ether, and the catalyst is especially suitable for the catalytic combustion of industrial organic exhaust gas in the coating production of the packaging and printing industries.

Description

technical field [0001] The invention relates to a combustion catalyst for industrial organic waste gas and a preparation method thereof, belonging to the technical fields of environmental protection catalytic materials and air pollution control. Background technique [0002] Industrial organic waste gas usually refers to the volatile organic compounds (Volatile Organic Compounds) released in the process of industrial production such as paint, electroplating, printing, coating, tire manufacturing, etc. Compounds, referred to as VOCs) gas. If these VOCs components are not treated, they will be directly discharged into the atmosphere, which will easily produce secondary organic aerosols and form environmental pollutants such as smog. [0003] For the packaging and printing industry, as solvents, thinners, leveling agents and slow drying agents for functional coatings or inks, they are volatilized by hot air drying during the production process to form VOCs waste gas. The type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89
Inventor 王金梅方荣刚陈革新刘文清姚彩兰李康飞赵培庆
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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