MILP Model for Plant-Wide Optimal By-Product Gas Scheduling in Iron and Steel Industry

The scheduling of by-product gases in by-product gas system, cogeneration system and production system is studied. All gas-consuming users are divided into three kinds according to their different characters and then a distribution model is built. A dynamic mixed integer linear programming (MILP) model for multiperiod optimization of by-product gas is performed to optimize by-product gas distribution to achieve total cost reduction. Case study shows that 6.2% operation cost is reduced by using the proposed model.