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Latin American applied research

versión impresa ISSN 0327-0793


ALVAREZ, E. et al. Platinum monolithic catalyst for SO2 abatement in dust-free flue-gas from combustion units. Lat. Am. appl. res. [online]. 2002, vol.32, n.2, pp.123-129. ISSN 0327-0793.

A catalytic oxidation process of traces of SO2 to SO3 for the treatment of dust-free flue-gas from power stations and some special waste incinerators has been developed. The catalyst was prepared by impregnation of platinum precursors on alumina/silicates-based material. The behavior of this industrial sized honeycombtype catalyst was studied at lab and pilotplant scale. The evolution of SO2 conversion and some physico-chemical properties of the catalyst with time in operation were examined. The 7-8 wt.% of sulfate deposition on the fresh catalyst had no influence on the catalytic activity at steady state conditions. The catalyst showed SO2 to SO3 conversion value of 80-90 vol.% operating at a temperature of 450ºC and space velocities of 3000-6150 h-1 (NTP).

Palabras clave : SO2 oxidation; industrial size; honeycomb-type; dust-free gas.

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