Study on Removal of PCDD/Fs from Flue Gas Processed by Pulse Corona Discharge Composite Technology

In this study, the pulse corona discharge composite technology is used to treat flue gas. The pulse corona discharge technology is the main technology, and the bag filter and activated carbon adsorption are the auxiliary processes. The pulse corona discharge adopts the nanosecond narrow pulse power supply to achieve the intense pulse electric field, the electric field intensity is adjustable, and the multi-level discharge ionization superposition is used to remove the dioxins (PCDD/Fs) in the flue gas step by step. Under the given electric field intensity, PCDD/Fs in flue gas will undergo material dissociation and free radical oxidation reaction. With the increase of electric field intensity, the removal efficiency of PCDD/Fs will be increased gradually, and the maximum comprehensive removal efficiency of more than 97% can be achieved. This study shows that the efficient removal of PCDD/Fs in incineration flue gas without secondary pollution can be successfully achieved via the pulsed corona discharge composite technology proposed, and this technology can also be extended to the removal of PCDD/Fs in similar flue gas. This study provides effective theoretical basis for the large-scale promotion and application of this technology.