抄録
From a viewpoint that waste paper is effectively used as thermal energy resources, copy paper, printed copy paper with toner and raw toner were decomposed under constant heating rate and constant temperature conditions in an image furnace with changing ambient 02 concentration in order to investigate their thermal decomposition and combustion characteristics. Mass reductions of them during the thermal decomposition were measured by an electric-micro balance. The gas compositions produced by the thermal decomposition and combustion processes were analyzed with a gas analyzer. Moreover, elemental analyses of the printed copy paper before and after thermal decomposition were carried out using ICP-MS. As a result, the copy paper began to decompose at about 500K under the constant heating condition, and the temperature was close to the decomposition temperature of cellulose. The decomposition temperature of printed copy paper with toner was slightly lower than that of copy paper. As for the gasification behavior, the peak concentration of CO in the gas product from copy paper decomposition was the highest in 10% 02 condition when the ambient temperature was 1073K. The gasification behavior of printed copy paper with toner was similar to that of copy paper. In the elemental analyses of the printed copy paper before and after thermal decomposition, Fe, which was contained in the toner, was mainly detected.
