Abstract
A series of supported vanadium-titanium denitrification catalysts were prepared by impregnation method with foam metal as carrier for NH3-SCR of NOx at low temperature. Effects of pH, slurry concentration, catalyst loading rate, face velocity and O2 concentration on catalytic performance were studied. The results showed that when immersion concentration was 30g/100mL and filtration speed was 0.7m/min, the pressure drop was 300Pa and NOx removal efficiency was 98% at 200°C. The foam catalytic filter was put into the bag dust collector, which had the function of simultaneous removing particulate and NOx. When filtration velocity was 0.7m/min, NOx removal efficiency reached 95.5% at 200°C and it had good water resistance. The results provided the basis for further pilot experiment.
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