| 摘要 |
The present invention relates to a harmful gas processing system of which the structure is straightforward and which makes it possible to effectively process harmful gas containing a nitrogen oxide or the like. According to the present invention, the harmful gas processing system comprises: a processing tank (1) where a first gas supply part (5) is formed at the bottom part and a gas discharge part (2) is formed at the top end thereof; a collecting part (10) comprising a liquid oxidizing agent collecting part (14) formed on a lower inner part of the processing tank (1), and further comprising a liquid reducing agent collecting part (15) which is separated from the liquid oxidizing agent collecting part (14); a contact-oxidation part (11) comprising a gas-liquid-contact packing material layer (16) which is disposed on an upper part of the first gas supply part (5) and is opened to the liquid oxidizing agent collecting part (14), and further comprising an oxidant spray nozzle (23) which is linked to the liquid oxidizing agent collecting part (14) so as to spray an oxidant onto the gas-liquid-contact packing material layer (16); a contact-reduction part (13) comprising a gas-liquid-contact packing material layer (34) which is disposed on an upper part of the contact-oxidation part (11) and is disposed to allow the processed gas which has gone through the contact-oxidation part (11) to pass through, and further comprising a reducing agent spray nozzle (36) which is linked to the liquid reducing agent collecting part (15) so as to spray a reducing agent onto the gas-liquid-contact packing material layer (34); and a diffusion isolation part (37) disposed between the contact-oxidation part (11) and the contact-reduction part (13), and allowing the diffusion of the processed gas which passes therethrough and guiding the liquid reducing agent, which has fallen from the contact-reduction part (13), through a bypass tube (35) and into the liquid reducing agent collecting part (15). |
