Considerations Regarding High Draft Ventilation as an Air Emission Reduction Tool

Abstract

High draft ventilation is an effective technique for reducing emissions from electrolysis cells while panel covers are removed to perform maintenance. In recent years, many new smelters have implemented high draft ventilation as one of the tools to further reduce air emissions from potrooms. In this paper the principles of high draft ventilation are discussed followed by a presentation on its impact on smelter performance. Practical observations are provided concerning the implementation of high draft ventilation in greenfield and brownfield smelters.