A wide-temperature type honeycomb denitration catalyst and a preparing method thereof

A denitrification catalyst, honeycomb technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of nitrogen oxide emissions not up to standard, achieve the suppression of conversion rate, easy industrialization, Effects in simple steps

Inactive Publication Date: 2017-02-15
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wide temperature honeycomb denitration catalyst and its preparation method, which solves the problems in the above-mentioned prior art such as ammonium bisulfate and low activity leading to substandard nitrogen oxide emissions when the power plant is under low load. question

Method used

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specific Embodiment 1

[0027] A wide temperature type honeycomb denitration catalyst according to the present invention, the composition weight percentage of this catalyst is as follows: Carrier TiO 2 80wt%; active ingredient A V 2 o 5 0wt%; active ingredient B MnO 2 1wt%; Auxiliary WO 3 10wt%; inhibitor CuCl3wt%; other components 6wt%.

[0028] Other components described in the present invention include ammonium metavanadate solution, manganese nitrate, glass fiber and binder.

specific Embodiment 2

[0030] A wide temperature type honeycomb denitration catalyst according to the present invention, the composition weight percentage of this catalyst is as follows: Carrier TiO 2 85wt%; active ingredient A V 2 o 5 1wt%; active ingredient B MnO 2 0wt%; Auxiliary WO 3 5wt%; inhibitor CuCl2wt%; other components 7wt%.

[0031] Other components described in the present invention include ammonium metavanadate solution, manganese nitrate, glass fiber and binder.

specific Embodiment 3

[0033] A wide temperature type honeycomb denitration catalyst according to the present invention, the composition weight percentage of this catalyst is as follows: Carrier TiO 2 90wt%; active ingredient A V 2 o 5 1wt%; active ingredient B MnO 2 1wt%; Auxiliary WO 3 2wt%; inhibitor CuCl1wt%; other components 5wt%.

[0034] Other components described in the present invention include ammonium metavanadate solution, manganese nitrate, glass fiber and binder.

[0035] The preparation method of the above-mentioned wide temperature type honeycomb denitration catalyst, the preparation method of the denitration catalyst is as follows:

[0036] (1) According to the dosage ratio, weigh TiO 2 、WO 3 , put it into the mixer, then add an appropriate amount of water and ammonia water to the mixer, and stir for 1 hour at a speed of 350r / min;

[0037] (2) When the water content of the mixture obtained in step (1) drops below 30%, add quantitative ammonium metavanadate solution, manga...

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PUM

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Abstract

The invention discloses a wide-temperature type honeycomb denitration catalyst. The catalyst includes, by weight, 80-90 wt% of a carrier that is TiO2, 0-1 wt% of an active component A that is V2O5, 0-1 wt% of an active component B that is MnO2, 1-10 wt% of an auxiliary that is WO3, 1-3 wt% of an inhibitor that is CuCl, and 5-10 wt% of other components. The invention also relates to a preparing method of the catalyst. The catalyst includes the manganese dioxide, wherein the manganese dioxide is a low-temperature catalytic active component and can improve low-temperature activity of the catalyst. The catalyst includes the CuCl, wherein the extranuclear space of Cu<+> is free of a 4S electronic shell, the CuCl belongs to a Lewis acid, SO2 also belongs to a Lewis acid, and the CuCl and the SO2 are mutually exclusive, and therefore a SO2/SO3 conversion ratio can be inhibited. The preparing method of the catalyst is simple, and is prone to industrialization.

Description

technical field [0001] The invention relates to a denitration catalyst and a preparation method thereof, in particular to a wide temperature honeycomb denitration catalyst and a preparation method thereof. Background technique [0002] Nitrogen oxide NO X (mainly NO and NO 2 ) is one of the recognized air pollutants around the world. my country's "Twelfth Five-Year Plan" regards NOX emission reduction as a binding assessment index. How to scientifically and effectively control nitrogen oxides has become a relatively urgent task in the field of air pollution control in my country. [0003] As the country's requirements for nitrogen oxide emissions become more stringent, in 2015, the Ministry of Environmental Protection issued a notice on "Relevant Issues Concerning Excessive NOx Emissions of SCR Denitrification Systems in Thermal Power Plants Under Boiler Low-load Operation", which pointed out that thermal power plants are in any When running in compliance, the emission of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/132
CPCB01J27/132
Inventor 江厚兵
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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