Utilizing Blast Furnace gas to run a supercritical CO2 cycle to meet part of the internal consumption of the iron plant and to produce fresh water through a multi-effect desalination unit

Iron furnace gases, a byproduct of the steel and iron industries, have been the subject of research on employing them to power some of the factory's internal needs. The rise in fuel costs and focus on energy system sustainability have created distinct frameworks for heat loss sources and low-value fuels. In this study, iron furnace gas produced in steel and iron factories has been used to produce additional power to provide part of the domestic power consumption of these factories. Supercritical carbon dioxide cycle has been used to generate power. The results show that at the optimal point, the system has emissions of 0.52 and a net power output of 22100 kWh. Also, the efficiency of the system is 38.56% and the emission of carbon dioxide is 0.510 ton/MWh. Also, by increasing the temperature of the exhaust gas by 150 degrees, it is clear that 2 MW of recycled heat can be obtained. Also, in this regard, the output work of the turbine has increased by 0.8 kW and increases the efficiency of the whole cycle by 31.5% to 37%.