P-13　Integration of solid biomass fuel production process with waste gasification and direct melting system

Abstract

In recent years, the introduction of gasification and direct melting system has been promoted for the purpose of recycling waste and extending the life of the final landfill. However, CO₂ emissions from the gasification and direct melting system are high owing to the use of coal coke. In this study, solid biomass fuel production process was integrated with waste gasification and direct melting system, and the CO₂ reduction effect and economics were evaluated. It was found that CO₂ emissions can be reduced by 79% by replacing coal coke with BIC produced in this process. In addition, in order to recover the initial cost in 10 years, it was found that the molding machine price needs to be less than US$ 1.3M (in the case that air for a dryer is preheated by the exhaust gas) and US$ 1.5M (in the case that the hot exhaust gas is used in the dryer), respectively.