221 環状火炎によって形成された高温酸化性雰囲気におけるPET樹脂粉末の燃焼特性(燃焼・ガス化(2),廃棄物処理技術)

概要

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Energy recycling of wasted plastic-resin is focused in this investigation. Fine grinding of plastic-resin and preparation of high temperature oxidizing atmosphere are indispensable for effective and successful burn-up of plastic resin. Polyethylene terephthalate resin powder is employed and the high temperature oxidizing atmosphere is generated downstream the annular burner. Temperature and O_2 concentration fields downstream the annular burner are first examined by varying the slit and circular nozzle jet velocities with both equivalence ratios kept constant and without PET-powder supply. PET-powder and stoichiometric propane-air mixture are then issued into the high temperature region by varying the slit jet velocity, the nozzle jet velocity and the median diameter of PET-powder. Variation of O_2 concentration fields and isothermals due to PET-powder combustion is also evaluated the PET flame. According to the results, the relationship between the high temperature oxidizing regions and unburnt rate of PET-powder is finally discussed.
2005-07-06