EUROPEAN STEEL TECHNOLOGY AND APPLICATION DAYS 2017 - ESTAD 2017

Sustainable steel making comprises the efficient utilization of the byproducts generated during the technological process. The general byproduct generated during the converter steelmaking process is the off gas, which contains a huge amount of physical –temperature and chemical – CO and H2 energy. The efficient utilization of both types of energy is the target of this research. The amount of generated off gas, its temperature and chemical composition, vary during the converter heats. The dynamic simulation of those parameters leads to: - An improvement of ID Fan electricity consumption; - Proper operation of the switch-over station to collect high calorific off gas; - The efficient heat utilization in the cooling stack during the off gas cooling for production of steam or hot water; - Efficient utilization of the cooling water. This research is based on the thermodynamic and kinetic modeling of the converter steelmaking process for the primary converter gas generation and CFD simulation of the gas dynamics in the cooling stack depending on different air combustion factors. Keywords: Dynamic process modeling BOF off gas Gas dynamic simulation Air combustion factor Post combustion