ESSC & DUPLEX 2019

Environmental protection and energy efficiency have become a decisive factor for steel producers over the recent years. Existing as well as new plants have to comply with the most stringent environmental regulations set by national and local governments. It is a global trend that emission and energy efficiency standards are lowered worldwide. Primetals Technologies has a vast experience in the area of gas cleaning and waste heat recovery from off-gases to comply with all actual standards for revamp as well as greenfield projects under the constraint of cost efficiency and minimum operational expenses. The paper discusses the integration of an AOD in an existing steel plant in Slovenia with special focus on the off-gas de-dusting system including a novel gas cooler. Also a waste heat recovery project based on an innovative hot water cycle for internal heat usage of an Italian EAF based steel mill will be introduced. A new innovative bag filter system based on concrete structure which features extremely low dust as well as noise emission levels at minimum ID fan power consumption will be presented. Furthermore, know-how based solutions which incorporate various energy efficiency measures across the gas cleaning plant and linking the de-dusting operation to the steel production will be introduced. Such digitalization approach either reduces the energy consumption or increases the suction capacity.