| abstract |
The present invention relates to industrial gas streams, such as nitrogen oxide-treated fuel gas streams, and other contaminants in dry or semi-dry scrubbers. After the fuel gas stream has been contacted with a sorbent, ozone is mixed downstream in the fuel gas stream, thereby oxidizing nitrogen oxides and other contaminants. oxidized contaminants are contacted with the sorbent present in the gas stream at the height or volume remaining of the downstream ozone injection scrubber; and the sorbent is then separated from the fuel gas stream leaving the scrubber dry or semi-dry. |