The removal of NO x with low oxidation degree, low temperature, and high vapor content
from small coal-fired boiler emission through selective catalytic reduction is difficult. This
study investigated liquid oxidation and absorption to remove NO x systematically.
Thermodynamic calculation showed that the equilibrium constants of the NO oxidation and
NO x absorption reaction are high; thus, NO x treatment by liquid oxidation and absorption is
feasible. Four oxidants (NaClO 2, NaClO, H 2 O 2, and KMnO 4) and four absorbents (Ca …