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Mixed rare earth catalytic natural gas combustion catalyst and preparation method thereof,

A combustion catalyst and mixed rare earth technology, which is applied in the direction of combustion methods, combustion using catalytic materials, physical/chemical process catalysts, etc., can solve problems such as low energy utilization rate and pollution, achieve wide reaction temperature window, wide range of raw material sources, The effect of high catalytic efficiency

Pending Publication Date: 2020-03-24
内蒙古智萃科技信息咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a mixed rare earth catalyzed natural gas combustion catalyst and a preparation method thereof. The prepared catalyst can be used not only for catalyzing flameless combustion in medium-low temperature natural gas stoves of residential users, but also for catalyzing flameless combustion in natural gas burners of industrial sources. Solve the problems of low energy utilization rate and easy pollution in flame combustion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Accurately weigh 0.6g of Ce(NO 3 ) 3 *6H 2 O crystals, 0.16g of La(NO 3 ) 3 *6H2O crystal, 0.06g of Fe(NO 3 ) 3 Crystals, dissolved in 40ml of purified water, stirring continuously until completely dissolved. Accurately weigh 4g of γ-A1 2 o 3 Particles were added to the mixed rare earth aqueous solution prepared above, allowed to stand at room temperature for 1 day, dried at 150°C for 3 hours, and the dried samples were calcined at 500°C for 3 hours to obtain a mixed rare earth catalytic combustion catalyst. The mixed rare earth catalytic combustion catalyst prepared by the method has an active temperature window of 400-800°C, and is mainly used in the catalytic combustion of natural gas stoves for residential users.

Embodiment 2

[0024] Accurately weigh 0.3g of Ce(NO 3 ) 3 *6H 2 O crystals, 0.08g of La(NO 3 ) 3 *6H2O crystal, 0.03g of Fe(NO 3 ) 3 Crystals, dissolved in 40ml of purified water, stirring continuously until completely dissolved. Accurately weigh 2g of cordierite honeycomb ceramic material, add it to the mixed rare earth aqueous solution prepared above, let it stand at room temperature for 1 day, dry it at 120°C for 4 hours, and bake the dried sample at 600°C for 3 hours to obtain a mixed rare earth catalytic combustion catalyst . The mixed rare earth catalytic combustion catalyst prepared by the method has an active temperature window of 400-1000°C, and is mainly used in the catalytic combustion of flue gas from natural gas burners from industrial sources.

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Abstract

The invention provides a mixed rare earth catalytic natural gas combustion catalyst and a preparation method thereof, wherein the catalyst is prepared from the following components in percentage by weight: 5-15% of mixed rare earth, 1-3% of Fe2O3 and the balance of gamma-Al2O3 or a cordierite honeycomb ceramic carrier. According to the invention, the mixed rare earth catalytic combustion catalystprepared by an impregnation method and comprising double active ingredients of the mixed rare earth oxide and the transition metal oxide can be used for catalytic combustion of medium and low temperature natural gas stoves of resident users, can further be used for catalytic combustion of natural gas combustors of industrial sources, and solves the problems of low energy utilization rate, easy pollution generation and the like in flame combustion.

Description

Technical field: [0001] The invention belongs to the technical field of rare earth catalysts and preparation techniques thereof, and in particular relates to a mixed rare earth catalytic natural gas combustion catalyst and a preparation method thereof. Background technique: [0002] Natural gas with methane as the main component has the advantages of large reserves, low sulfur content, and cheap price, so it is considered to be an ideal energy source in the future. At present, most of natural gas is burned as energy by flame combustion. However, flame combustion has problems such as low energy utilization rate and easy pollution, while catalytic combustion has the advantages of mild combustion, low reaction temperature, wide range of oxygen concentration, low pollution emissions and energy saving. , one of the most efficient ways to make full use of energy. [0003] Catalytic combustion is a technology that uses a catalyst to perform flameless combustion at a low light-off...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C10L3/06C10L10/00F23C13/08
CPCB01J23/83B01J23/002C10L3/06C10L10/00F23C13/08B01J2523/00C10L2230/04
Inventor 李佳
Owner 内蒙古智萃科技信息咨询有限公司
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