As we all know, although the catalyst does not react with the reactants, but because of the particularity of its environment, its damage is relatively large, so its life is limited. Generally 3-5 years later will be inactivated, the need for new ones. Then the deactivation of the catalyst and how to deal with it? You can see why the deactivated denitrification catalyst has to be regenerated to understand why inactivated catalysts need to be recycled. Now there are a lot of catalyst recovery manufacturers will be deactivated catalyst for regeneration or harmless treatment, the following together with the denitrification catalyst manufacturers to see how the harmless treatment.
Deactivation denitration catalyst
SCR catalyst manufacturers currently no deactivation catalyst regeneration device, even if the regeneration can not be permanently used, the user will inevitably encounter waste disposal of the catalyst problem. One of the main active ingredient V2O5 toxic, are highly toxic.
The United States, Japan, South Korea require the failure of the catalyst entrusted by the user to hold the hazardous waste disposal permit units are responsible for disposal, mostly broken after the toxic solid waste disposal site buried deep buried.
Other possible methods of disposal include grinding the spent catalyst with coal, feeding it into a boiler, treating the pyrolyzed catalyst material with fly ash, mixing it with other raw materials for concrete, Mixed with cement clinker after grinding, used as cement additive, or used in brick making.
We can see that the catalyst contains a variety of heavy metals, such as improper handling, one will waste the cost, and second, it will cause secondary pollution, and is permanent, it is recommended related to the use of the unit must be a reasonable disposal.