Regeneration Solution of SCR Denitration Catalyst

More than 90% of the thermal power plants deal with the flue gas denitrification using SCR which is short for Selective Catalytic Reduction, making SCR process widely use. The cleaning and regeneration of the catalyst is not only one of the effective methods to reduce the running cost of flue gas, but also can reduce the environmental pollution caused by solid waste. This paper introduces a kind of Regeneration Solution of SCR Denitration Catalyst.

The components of it are as follows: Penetration enhancer (JFC) takes the 1‰~5wt‰ of total content, surfactant take 1‰~5wt‰, peregal take 0~5wt‰, ammonium metavanadate take 1%~4wt%, ammonium paratungstate take 6%~12wt% and ammonium molybdate take 2~6wt%, distilled water and acid take the remained contents.
The acid is the role of adjusting pH value in range 5~7, can be anyone of citric, oxalic and acetic acid.

The advantages of Regeneration Solution of SCR Denitration Catalyst are as follows:
1. Make-up active ingredients by the time cleaning denitration catalyst, which can significantly improve the activity of deactivation, and recover the activity as high as 90~105%;
2. Nonionic surfactant added in the regeneration solution not only improves the cleaning ability of catalyst, but also cause no damage to the catalyst carrier and other active components;
3. Catalysts after regeneration can be completely normal used making the service life reach more than 95% as the new catalyst.