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Ceramic honeycomb catalyst for high-temperature waste gas denitrification and preparation method thereof

A technology of honeycomb catalyst and high-temperature exhaust gas, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., and can solve unfavorable flue gas denitrification technology, catalyst aging, High catalytic cost and other issues, to achieve the effects of strong denitrification ability, strong resistance to sulfur poisoning, and high catalytic activity

Inactive Publication Date: 2014-09-24
PINGXIANG HEXIN ENVIRONMENTAL PROTECTION STUFFINGEQUIP CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the honeycomb catalysts currently used generally have problems such as high price, high catalytic cost, and easy aging of the catalyst, which is not conducive to the development of flue gas denitrification technology.

Method used

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  • Ceramic honeycomb catalyst for high-temperature waste gas denitrification and preparation method thereof
  • Ceramic honeycomb catalyst for high-temperature waste gas denitrification and preparation method thereof

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Embodiment Construction

[0020] The ceramic honeycomb catalyst used for denitrification of high-temperature exhaust gas in the embodiment of the present invention includes a carrier and an active component; wherein, the composition of the carrier is 70-90wt% of metatitanic acid, 1-5wt% of glass fiber, 5-15wt% of spherical clay, 2-5 wt% of cellulose, 2-6 wt% of glycerin; the composition of active components is 20-30 wt% of cerium nitrate, 20-30 wt% of lanthanum nitrate, 15-25 wt% of aluminum nitrate and 25-35 wt% of copper nitrate.

[0021] The preparation method of the ceramic honeycomb catalyst used for denitrification of high-temperature exhaust gas according to the embodiment of the present invention, the steps are as follows:

[0022] (1) Preparation of honeycomb catalyst carrier

[0023] The components of the carrier are compounded, mixed with water, mixed, aged, vacuum muddled, extruded, microwave dried and shaped, and then calcined at a temperature of 450-550°C to obtain a honeycomb catalyst ca...

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Abstract

The invention discloses a ceramic honeycomb catalyst for high-temperature waste gas denitrification. The ceramic honeycomb catalyst for high-temperature waste gas denitrification comprises carriers and active components, wherein the carriers comprise 70wt%-90wt% of metatitanic acid, 1wt%-5wt% of glass fibers, 5wt%-25% of ball clay, 2wt%-5w% of cellulose and 2wt%-6wt% of glycerinum; the active components comprise 20wt%-30wt% of cerous nitrate, 20wt%-30wt% of lanthanum nitrate, 15wt%-25wt% of aluminum nitrate and 25wt%-35wt% of copper nitrate. Additionally, the invention also discloses a preparation method of the ceramic honeycomb catalyst for high-temperature waste gas denitrification. According to the invention, the denitrification catalyst is produced at low cost; the obtained catalyst is high in denitrification and sulfur poisoning resistance, and has high catalytic activity even at low temperature, and the service life of the catalyst is prolonged.

Description

technical field [0001] The invention relates to the technical field of flue gas denitrification catalysts, in particular to a ceramic honeycomb catalyst for denitrification of high-temperature exhaust gas and a preparation method thereof. Background technique [0002] Nitrogen oxide NO X (mainly NO and NO 2 ) is a toxic air pollutant, mainly from the flue gas of thermal power plants. If it will contain nitrogen oxides NO X Untreated flue gas is directly discharged into the air, which will cause serious pollution to human health and human living environment. During the "Twelfth Five-Year Plan" period, the country proposed that the economy should develop harmoniously with the environment on which human beings depend, and environmental protection has been paid more and more attention to the world, which prompted a lot of research on air purification technology at home and abroad. [0003] At present, the prior art has no X Purification treatment is flue gas denitrification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/04B01J23/83B01D53/86B01D53/56
Inventor 黄建华胡自梅董伟霞朱克峰
Owner PINGXIANG HEXIN ENVIRONMENTAL PROTECTION STUFFINGEQUIP CO LTD
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