Green anode plant activities for aluminum smelters generate harmful vapors containing CTPV (Coal Tar Pitch Volatiles). These volatiles include a large fraction of PAHs (Polycyclic Aromatic Hydrocarbons) that are suspected to be hazardous for health and environment.
Fives’ installations aim at limiting operators’ exposure in the working area and at complying with the most stringent environmental standards in terms of emissions at the stack. Fives supplies proven technologies for a clean Paste Plant.
Fives has developed Eolios, a system that optimizes the combination of:
A dry scrubber (DS) based on the adsorption of PAH on coke fines
A Regenerative Thermal Oxidizer (RTO) using oxidation technology
A conventional coke dry scrubber treats the bulk of the air volumes extracted from the anode forming equipment. Additionally, a small size RTO, which can be coupled to a pre-filtration unit, is dedicated to the treatment of high PAHs concentrated streams originating mainly from the anode paste coolers.