SCR denitration catalyst applicable to glass melter smoke and preparing method of SCR denitration catalyst

Abstract

The invention discloses an SCR denitration catalyst applicable to glass melter smoke and a preparing method of the SCR denitration catalyst, and belongs to the technical field of SCR denitration catalyst research and development. In the preparing method, titanium dioxide is adopted as a carrier, tungsten triode and vanadium pentoxide which are obtained after predecessor ammonium tungstate and ammonium metavanadate are subjected to pyrolysis are regarded as an auxiliary and an active component respectively, and finally the catalyst is obtained through modification under doping of one or more of oxides of Ce, Mn and Mo. According to the SCR denitration catalyst applicable to glass melter smoke and the preparing method of the SCR denitration catalyst, the doping-modification property which transition metal elements have is utilized, and a reaction temperature window of a catalyst system is adjusted so that the catalyst can maintain a high catalytic activity at the temperature of 300 DEG C-400 DEG C; meanwhile, the resistance of the catalyst to alkali metal poisoning is improved, and thus the catalyst can better promote a denitration reaction in an environment of the glass melter smoke. As experimental data shows, the denitration rate of the prepared catalyst in a simulated environment of the glass melter smoke reaches 80% or above.

Description

technical field [0001] The invention belongs to the technical field of research and development of SCR denitration catalysts, in particular to an SCR denitration catalyst suitable for flue gas of a glass melting furnace and a preparation method thereof. Background technique [0002] Whether air pollutants can be discharged up to standard has become an important factor restricting the development of enterprises. Under the current technical conditions, SCR denitrification technology has been widely used due to its stable operation, high denitrification efficiency, and low ammonia slip. The core of SCR technology. [0003] The vanadium-based catalysts of the existing public technology use titanium dioxide as a carrier, vanadium pentoxide as a catalyst active component, and tungsten trioxide as a catalyst aid, and then add various additives, such as adhesives, extrusion aids and lubricants etc. to prepare catalysts with certain shape, mechanical strength, specific surface area...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the denitrification equipment used in domestic glass melting furnaces are denitrification equipment of coal-fired power plants, and most of the catalysts used are imported from abroad. Not only is the cost high, but also such catalysts are prone to produce alkali in the special environment of glass melting furnace flue gas. The phenomenon of metal poisoning makes the denitrification efficiency of the catalyst low and the service life short

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