Thermodynamic Calculation of Generation of H_2 Gas by Reaction between FeO in Steelmaking Slag and Water Vapor

摘要

Hydrogen gas is one of key materials for promotion of the utilization of energy with low environmental load. Ironmaking and steelmaking processes produce enormous thermal energy during steel production, most of which are not used before final dissipation to natural environment. In the present study, the environmental-friendly H_2 gas production process by converting H_2O gas with FeO and thermal energy in steelmaking slag has been proposed, and physicochemical properties of reaction between FeO-containing steelmaking slag and H_2O-containing gas have been estimated by applying thermodynamic calculation. The effects of slag temperature and compositions, gas temperature, and partial pressure of H_2O on production behavior of H_2 gas have been investigated.