energy optimization system in a direct reduction metal ore production facility

摘要

Patent specification: "energy optimization system in a direct reduction metal ore production facility". The invention relates to a power optimization system in a direct reduction metal ore production plant (3), in particular directly reduced iron, wherein the installation (3) comprises at least one reduction unit (12). a gas mixture separation device (7, 7a, 7b) having an associated compression device (4, 4a, 4b) and a gas heating device (10) arranged upstream of the reduction unit (12). ). furthermore, part of the process gases (2, 2a, 2b) is supplied via a feed line of at least one pig iron production plant (1, 1a, 1b), in particular a melting reduction, to the installation for the production of metal ores for direct reduction (3). In the system according to the invention, a turbine (8,8a, 8b), in particular an expansion turbine, is placed between the gas mixture separation device (7, 7a, 7b) and the gas heating device. (10) arranged upstream of the reduction unit (12) such that a pressure drop between the gas mixture separation device (7, 7a, 7b) and the reduction unit (12) is converted into energy forms which can be used to operate other components (4, 4a, 4b, 15, 15a, 15b) of the direct reduction metal ore production facility (3), in particular, electricity and / or energy mechanical. By means of the invention, the energy consumption of the installation (3) is reduced and thus the operating costs. 20611819v1