流動床二段廃棄物燃焼炉の第一段低温熱分解過程における塩素挙動

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The aim of this study is to research the mechanism of dechlorination for low-temperature pyrolysis process not only by establishing the material and calorific balance at the first stage of the two-stage fluidized-bed waste incinerator but also by revealing the behavior of chlorine towards products formed in the pyrolysis. The pyrolysis experiments have been performed using wood chips containing poly (vinyl chloride) in a 5:1 weight ratio as a model refuse-feed. The feed is pyrolyzed with and without catalyst (disposable iron sulfide catalyst), as well as under the presence of low oxygen concentration (5.7vol%) at 360-420℃. The acidic and acid-free fractions separated by the treatment with an anion exchange resin from tar component are characterized by means of spectroscopic techniques (FT-i.r., ^1H-NMR and ^<13>C-NMR) and ultimate analysis, comparing to those from tar components formed by the pyrolysis of six different kinds of hydrocarbons and poly (vinyl chloride). The results show that; (1) Calorific value of char retains more than 40% of the starting feed, which exceeds the process target for calorific balance between the first and second stage of the total incineration process. (2) More than 95% of chlorine involved in the feed is removed during pyrolysis and the dechlorinated char component (Cl content: 0.4-0.8wt%) could be transferred into the second stage for the total system. (3) The presence of the catalyst in the pyrolysis plays an important role in the reduction of chlorophenols formed in the low-temperature pyrolysis process.
一般社団法人日本エネルギー学会の論文
2004-02-20

流動床二段廃棄物燃焼炉の第一段低温熱分解過程における塩素挙動

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