Dynamic Simulation of A Bio-Hydrogen Production System Using Waste Heat and By-products from Steel-Manufacturing Process

In this study, we proposed a bio-hydrogen system using waste heat and by-product gas from steelworks. Dynamic simulations were carried out for the system using intermittent skirt cooling water as the heat source. The temperature changes in the components over time were compared with the measured data. The simulation results showed that the trend of temperature variation with time of each component was well predicted. Experiments and simulations agreed well not only with the design conditions but also with two off-design conditions. After confirming the reliability, we designed a 10-ton reactor for installation in the actual site using simulations. Simulation results showed that the minimum volume of the system was determined such that the effectiveness of the heat storage tank and minimum variation in the temperature of the reactor were ensured.