Pilot test of ultra-low temperature NH3-SCR denitrification process for cement plant flue gas
SCR(Selective Catalytic Reduction)is currently the mainstream nitrogen oxide(NOx)removal technology.Commercial catalysts operate at high temperatures,typically between(250-350)°,making them difficult to apply in low flue gas temperatures.We have modified a monolithic V-series denitrification catalyst,which exhibits excellent denitrification performance at low temperatures.This article studied the low-temperature activity of the modified V-series NH3-SCR denitrification catalyst and successfully applied it under actual flue gas conditions of(120-160)℃.The stable operation time of the pilot test exceeded 10 months,and the outlet NOx concentration could always meet the emission standards.The performance of the catalyst after operation was analyzed and explored.The pilot test verified the feasibility of the technical route and the reliability of the catalyst,and completed the demonstration work of the industrial plan,which has the conditions to carry out demonstration projects.
air pollution control engineeringlow temperature flue gasSCRdeactivationhoneycomb cat-alystregenerate
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