Hot Gas Filters

Abstract A review on hot gas filters is provided. Advantages and disadvantages of hot gas filtration are discussed. Hot gas filter media, hot gas filter designs, as well as regeneration systems and concepts are reviewed. Moreover, applications using hot gas filters are presented. Hot gas filters were firstly technically applied for flue gas cleaning at the incineration of low-level contaminated radioactive wastes from nuclear power generation at the beginning of the 1970s. Nowadays, hot gas filtration is a reliable and well proven technology. Hundreds of hot gas filters are applied worldwide in different processes, such as incineration and pyrolysis of radioactive waste, coal and biomass gasification, fluid catalytic cracking in refineries, cement and glass production, recycling of metals, production of chemicals, catalysts, pigments and nanoparticles, smelting processes and metal production, as well as waste incineration and pyrolysis.