Abstract
Porous filter was manufactured using cordierite powder and it was loaded with V2O5 catalyst by vacuum impregnation method. The removal efficiency of NOX and simultaneous removal efficiency of NOX /Dust were measured by passing NO and dust through catalystloaded ceramic filter. The cordierite porous filter had the apparent porosity of 61.6%, the compressive strength of 12.3 MPa and the pressure drop of 1200 Pa at the face velocity of 5 cm/sec, at 400oC. NOX removal efficiency of filter loaded only V2O5 catalyst was 80% and it could be improved up to 90% by the acid treatment (which increased specific surface area of filter elements); then this result is equal to the removal efficiency of the commercial V2O5/TiO2 catalyst, which was used at SCR(Selective Catalytic Reduction) process. Dust & NOX simultaneous removal efficiency of filter loaded V2O5 catalyst was about 99.6% of dust and 90% of NOX. Crack generated by thermal shock or pressure was not found. We found that catalytic cordierite filter is good candidate for simultaneous removal of particulate and hazardous gas from this result.
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