Electron-beam treatment of PCDD/Fs in the flue gas from a municipal solid waste incinerator

電子ビームによるごみ燃焼排煙中ダイオキシン類の処理

廣田 耕一; 箱田 照幸; 田口 光正; 瀧上 眞知子*; 小嶋 拓治

Hirota, Koichi; Hakoda, Teruyuki; Taguchi, Mitsumasa; Takigami, Machiko*; Kojima, Takuji

流量1,000m/hN,温度200度の条件で、ダイオキシン類を含むごみ燃焼排煙に電子ビームを照射した。その結果、吸収線量の増加に伴いダイオキシン類の分解率が高くなり、14kGyでその値は90%に達した。また、ダイオキシンとフランの分解挙動について考察を行った。

The flue gas from a municipal solid waste incinerator (MSWI) was irradiated with electron beams to destroy polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). A flue gas of 1,000 m/h N for the irradiation was obtained at 200C from a main gas stream of the MSWI. The decomposition efficiencies of PCDD/Fs were increased with absorbed dose and reached 90% at a dose of 14 kGy. The reaction mechanisim for PCDD/Fs was also considered.