Vanadium-series loading type high-temperature SCR catalyst and preparation method thereof

An SCR catalyst and supported technology, which is applied in the field of vanadium-based supported high-temperature SCR catalyst and its preparation, can solve the problems of low mechanical strength, high activation temperature, and narrow temperature window of the catalyst, so as to broaden the activation temperature window, start The effect of lowering the active temperature and improving the denitrification efficiency
CN104209115AInactive Publication Date: 2014-12-17SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2014-12-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a vanadium-series loading type high-temperature SCR catalyst. The vanadium-series loading type high-temperature SCR catalyst takes a titanium tin oxide as a carrier, takes an oxide of vanadium as an active component and takes an oxide of cerium as a cocatalyst, wherein the mol ratio of cerium to titanium to tin in the catalyst is (0.1-0.3) to 1 to 1; and the mass of the oxide of vanadium accounts for 1% of the whole mass of the catalyst. The invention further discloses a preparation method of the catalyst. Compared with a single vanadium-based catalyst, the vanadium-series loading type high-temperature SCR catalyst has the advantages that CeO2 is added, so that the heat resistance of the catalyst is improved; the reduction temperature of the catalyst is reduced and the denitration efficiency is improved; a selective catalytic reduction denitration active temperature window is widened; and the modification effect on a V2O5 / TiO2-SnO2 catalyst is very good.
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Description

technical field

[0001] The invention belongs to the technical field of catalysts, and relates to a high-temperature denitrification SCR reaction catalyst for flue gas in a thermal power plant, in particular to a vanadium-based loaded high-temperature SCR catalyst and a preparation method thereof. Background technique

[0002] In my country, the coal-based primary energy production and consumption structure has brought serious environmental pollution problems. Among them, the pollution of nitrogen oxides has been increasing, and photochemical smog pollution has even appeared in some areas. At present, the emissions of nitrogen oxides from thermal power plants account for about half of the total emissions of nitrogen oxides in the country. With the continuous increase of the number of thermal power plants, the emissions and proportion of nitrogen oxides from thermal power plants will continue to rise. Controlling the emission of nitrogen oxides has become a key pollution cont...

Claims

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