3-3-4 Effective utilization of difficult-to-use biomass by a carbonization process and a burner combusting the carbonized solid fuel for asphalt plant

Abstract

Many kinds of biomass, such as bark contaminated with earth and sand, are still dumped as waste materials. On the other hand, asphalt plants consume a large amount of fossil fuels to produce road-paving asphalt mixture. Therefore, it is very effective to reduce fossil fuel consumption if the difficult-to-use biomass is utilized as fuel for asphalt plants. We have then developed a carbonization process and a burner combusting the pulverized char to utilize them for asphalt plants. The carbonization plant consists of a rotary kiln heated externally and a hot gas generator burning the volatile matter evaporated from the biomass. The burner combusts the pulverized char made by the carbonization plant with A fuel oil at desired ratio of char and oil. In this presentation, we report the plant and burner, and their operation results.