噴流層による有機廃棄物の高温ガス変換技術の研究開発

概要

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To understand the behavior of the entrained-flow gasification of organic wastes, high calorie value polypropylene (PP) and low calorie value polyethylene terephthalate (PET) were gasified in a single nozzle type Drop Tube Furnace (DTP). In a small scale of gasifier, it is very difficult to obtain as high temperature as 1,300 ℃ with a low oxygen-carbon molar ratio as being done in larger scale than pilot plants, and it is necessary to operate in high oxygen-carbon molar ratio in order to maintain the reaction temperature 1,300 ℃ because the heat loss becomes significant in comparison with heating load in the furnace. When methane gas was introduced as an auxiliary fuel under the low oxygen-carbon molar ratio, the reaction temperatures was achieved over 1,300 ℃ and higher carbon gasification conversion than 80% was attained. The composition of the main gas produced by gasification was correlated by the shift reaction equilibrium at the temperature above 1,250 ℃. Then the equilibrium constant, which was almost independent of the temperature in the range, could be approximated about 0.85.
一般社団法人日本エネルギー学会の論文
2003-09-20