High Temperature Decomposition of Halon with Solid Alkaline Reactants

摘要

Halons (bromo-fluorocarbons) are known as the material showing both large Ozone Depleting Potential (ODP) and Global Warming Potential (GWP). Appropriate decomposition treatments of waste halons are important for global environment.A dry process to decompose halon is developed. Halon and burnt lime and burnt dolomite (reactants) are heated in electric furnace over the temperature of 800 deg C. Halon is decomposed and simultaneously reacted with the reactants to generate fluorides and bromides.The reaction mechanism of reactants with halon was invesitigated by means of SEM, XRD, IC, and by measuring specific surface area of the reactants. Burnt dolomite showed higher recovery and conversion effect than that of burnt lime for halon decomposition. Magnesium oxide in burnt dolomite is found to have an important role for effective decomposition of halon.