Field evaluation of nitric oxide abatement with ferrous chelates

Abstract

Abstract The absorption of nitric oxide from flue gas streams presents some unique problems due to its low solubility in conventional scrubbing solutions. A process is being developed that utilizes an electrolytic cell to reduce Fe(III) to Fe(II) and maintain the majority of the iron chelate in the active ferrous state. This process has been tested on an actual flue gas stream and achieved 80% nitric oxide abatement. Further reduction of nitric oxide is possible with increased stages.