The producing method of the rare earth based flat plate denitrification catalyst

Abstract

The invention discloses a producing method of the rare earth based flat plate denitrification catalyst which applies the anatase titanium dioxide powder as the first carrier, the titanium silicon molybdenum compound oxides as the active components, one or more of the nanometer oxides of tungsten, cobalt, nickel, zirconium iron as the assistant catalyst. What's more, add the binder and lubricant and then form the pastes of the denitrification catalyst. The pastes of the catalyst needs to be decayed, coated, dried, cut and calcined to make the flat plate denitrification catalyst. The rare earth denitrification catalyst produced in this method has a good stability of high temperature and frame. The anti-wear and anti-seismic functions are quite excellent. it also has features like wider temperature windows, higher denitrification efficiency and simple recycling and processing of waste catalyst. The processing is simple and low-cost so it can meet the requirements of the industrial application and will be adapted to the denitrification of all the fixed and moving sources.

Description

technical field [0001] The invention relates to a rare earth-based flat-plate denitrification catalyst and a preparation method thereof, belonging to the fields of environmental protection catalytic materials and air pollution control. Background technique [0002] The ultra-clean emission of nitrogen oxides from coal-fired power plants has been fully rolled out, and remarkable results have been achieved with the joint efforts of all sectors of society. At present, the most widely used denitrification technology in coal-fired power plants is selective catalytic reduction (SCR), the core of which is catalyst, mostly vanadium-titanium series. where V 2 o 5 It is a highly toxic substance, slightly soluble in water, which will damage the human respiratory system and skin, cause kidney damage, visual impairment, etc., and the vanadium-titanium system catalyst will produce pollution during production and use. The waste vanadium-titanium catalyst belongs to Hazardous solid waste...

AI Technical Summary

Problems solved by technology

The disadvantages of these catalysts include complex preparation process and difficulty in industrial application, or the catalyst has poor wear resistance, sulfur resistance, water resistance, or solid poisons such as alkali metals and alkaline earth metals, or the temperature window of the catalyst. Narrow is difficult to meet industrial applications, and there are few patents on rare earth substrate catalysts