Simultaneous Removal of SOx and NOx by Catalytic Cordierite Filter
A cordierite filter was fabricated by an extrusion method and it was loaded with LaCoO3 catalyst by a vacuum impregnation method. The simultaneous removal efficiency of NOx/SOx was measured by passing NO and SO2 through the catalyst-loaded ceramic filter. The cordierite porous filter had an apparent porosity of 61.6%, compressive strength of 12.3 MPa, and a pressure drop of 1200 Pa at a face velocity of 5 cm/sec, at 400. These values are sufficient to apply the filters for the removal of hazardous gas in incineration systems, etc. NOx & SOx simultaneous removal efficiency of LaCoO3 loaded on the porous cordierite filter was about 98% of NOx and over 90% of SOx between 600 and 650. We could find no poisoning of the catalyst by SO2.
T. Ohji, T. Sekino and K. Niihara
M. C. Shin, J. S. Cha, J. H. Lee, S. H. Lee, H. S. Lee, "Simultaneous Removal of SOx and NOx by Catalytic Cordierite Filter", Key Engineering Materials, Vols. 317-318, pp. 465-468, 2006