Oily waste metal recycle using circulation-type superheated steam degreasing system

In order to improve quality of oily metal waste for recycling materials disposed from metalworking factories, the degreasing system plays an important role. It is necessary to introduce the system in municipal and industrial waste management. In this paper, an energy consumption of a practical circulation-type superheated steam degreasing system was used for oily metal waste, which was disposed from a metalworking factory. It was compared to a once-through type superheated steam degreasing system. A demonstration system was constructed, and the energy balances of the mentioned systems were evaluated. Then, flow rates of materials required for the recycle system were estimated, and energy balances from the system were theoretically evaluated and compared. As a result, the circulation-type superheated steam waste recycle system that was applied to process the oily metal waste provides a promising high-quality material recycle and energy-saving waste recycle system.