Functional groups that selectively react with ozone
- -SH, =S.--NH2, =NH,--OH,--CHO
Reactivity of specific malodorous substances with ozone
. Good reactivity (decomposable)
Methyl mercaptan, hydrogen sulfide, dimethyl sulfide, dimethyl disulfide, trimethylamine, acetaldehyde, propionaldehyde, butyraldehyde, isobutyraldehyde
. Poor reactivity (difficult to decompose)
(VOC component) toluene, styrene, p-xylene propionic acid, J acid, n-valeric acid, isovaleric acid
Simultaneous desulfurization and denitrification of coal-fired flue gas
More than 90% of NOx in coal-fired flue gas is water-insoluble NO
When the temperature is below 150℃ and n(03)/n(NO) is 1.0, O3 can oxidize more than 96% of NO. Combined with the lye washing device, it can achieve simultaneous high-efficiency desulfurization and denitrification.
When the temperature reaches 150℃, the ozone decomposition rate increases significantly, and the NO oxidation rate decreases to 86.9%.