Yosuke IYATOMI

Modeling of Municipal Solid Waste (MSW) Pyrolysis Reaction by Thermal Analysis

Toshiya KOMATSU, Shuji HIMENO and Shoichi FUJITA


In wastes processing, the gasification and melting system which effective in a shortage of the landfill site and the measure against dioxin are attracted attention. For more effective use of this system by improvement in energy recovery, or use char as fuel, it is necessary to understand the pyrolysis behavior for changes of Municipal Solids Waste (MSW) composition.

In this study, we substituted the typical chemistry substance for MSW and considered the model of pyrolysis behavior of MSW.
First, from waste composition investigation, cellulose, xylan, lignin, polyethylene, polypropylene, polystyrene, and silicon dioxide was determined as the representation substances of MSW and these pyrolysis behavior expressed with thermogravimetric curve (TG curve) were modeled. Thus, TG curve of the mixed samples of these substances fitted by weighted sum of the TG curve of each representation substances.

Furthermore, TG curves of MSW or refuse derived fuels (RDF) can be approximation by weighted sum of the TG curve of the representation substances, and the composition by this model and real composition were in good agreement for all MSW and RDF.