Evaporation of fluorine, chlorine and selenium from glass melts and emission reducing measures

Abstract

The simultaneous waste gas treatment of inorganic gaseous fluorine and chlorine Compounds as well as of gaseous selenium Compounds is still a big problem for many companies of the German glass industry. With the aid of an HVG/AiF research project investigations were carried out with the aim of characterizing the evaporation behaviour of fluorine, chlorine and selenium from industrially melted soda-lime-silica glasses (container glasses) and of correlating their behaviour with the operating data of the melting furnaces. The main effort, however, was put into investigating the absorption rates on an existing waste gas treatment plant depending on the kind and the quantity of the absorption agent. Moreover, the influence of the absorption temperature on the absorption rates was determined.