Method for the regeneration of iron-loaded denox catalysts

Details Method for the regeneration of iron-loaded denox catalysts Method for the regeneration of iron-loaded denox catalysts

B - Operations, Transporting

01

J

B01J 23/92 (2006.01) B01J 38/60 (2006.01) B01J 38/62 (2006.01) B01J 21/06 (2006.01) B01J 23/22 (2006.01) B01J 23/24 (2006.01)

Patent

CA 2496861

The invention relates to a method for regenerating DeNOx catalysts having an increased SO2/S03 conversion rate as a result of the cumulation of iron compounds, and is characterised in that the catalysts are treated with an essentially aqueous acid solution, preferably having a pH between 0.5 and 4, and with an addition of antioxidants.

L'invention concerne un procédé de régénération de catalyseur DeNOx présentant un taux de conversion SO¿s?/S0¿3? élevé résultant de l'accumulation de composés de fer. Ce composé se caractérise en ce que le catalyseur est traité avec une solution acide sensiblement aqueuse, de préférence présentant un pH de 0,5 à 4,0, et avec addition d'antioxydantx.

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