Oxidation and removal of mercury from flue gases at a hazardous waste incineration facility

摘要

A wet scrubber (MercOx) has been installed in a plant for large-scale incineration of hazardous waste at Sydkraft SAKAB AB, Sweden, for removal of volatile toxic agents in the flue gases. Of particular importance is the capacity for removal of HC1, SO_2 and mercury, as well as dioxin-like substances. The removal efficiency is generally above 90 pencent at the present operating conditions, also during events corresponding to high loads of mercury (above 4 mg/m~3) in the flue gas. Further efforts to optimize the process by adding oxidizing and complexing agents to the scrubber are in progress.