Abstract
As society becomes more concerned about environmental protection and resource recycling, the refuse derived fuel (RDF) technology has been recognized as a new refuse disposal technology that replaces small-and medium-scale incinerators, and the number of RDF plants has been increasing. To promote more widespread use, manufactured RDF must be utilized. Lately the large-scale use of RDF power generation has been vigorously promoted in Mie and Ishikawa Pref. However, there are many problems such as cost efficiency and cooperation from neighboring municipalities, so it seems that it takes time to bring large-scale RDF plants into wide-spread use. Against this background, we have moved with the research and development of the carbonization system. In this system, RDF is heated and carbonized at about 1, 000 K in the absence of O2 or in a low-oxygen atmosphere using an oscillating type carbonization furnace. A demonstration plant with an RDF treatment capacity of 1 ton/h is brought into operation in April 2000 at Mizushima Works and test runs are being carried out for 30 days. The resulting carbide is used in the pulverized-coal injection for blast furnace and is mixed with raw materials for sintering. It is expected that the biomas carbonization system will come into widespread use at industry as one of the environmental application.
