Research progress on anti-poisoning and regeneration of catalysts at medium-low temperature NH3-SCR
The selective catalytic reduction(SCR)technology of NOx with NH3 at medium-low temperature are widely used in steel,coking,ceramics,glass,cement,waste incineration,gas boilers and other non-electric industries.Different working conditions,e.g.,sulfur,acid,alkali metals,fly ash,etc.lead to the poisoning of SCR catalysts.Therefore,SCR catalysts with the excellent anti-poisoning ability and regeneration performance are big challenges and attract more attention.This review compares and summarizes the antipoisoning mechanisms and regeneration methods under various industrial SCR conditions of medium-low temperature.Finally,the prospect of SCR technology at medium-low temperature is discussed.
medium-low temperature NH3-SCRdeNOxcatalystantipoisoning mechanismsregeneration
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