菜種油中熱分解による廃棄ポリウレタンフォームのリサイクルに関する研究

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Flexible polyurethane foam (FPF) was pyrolyzed from rapeseed oil at 320℃. The FPF pyrolyzed oil (PO) having high viscosity was mixed with regular diesel oil (DO) and/or ethanol to decrease viscosity. These fuel mixtures (PO/DO, PO/ethanol and PO/DO/ethanol) were prepared as diesel fuel. To examine the suitability as an alternative diesel fuel, viscosity, calorific value, and fuel consumption were investigated for each fuel mixture. In addition, a componential analysis on the combustion exhaust gas was performed and the power generation of the diesel engine using a dynamo was examined. The viscosity of PO can be decreased and the calorific value can be increased by increasing the amount of DO. Both viscosity and the calorific value were decreased by addition of 20-30wt% ethanol; the viscosity was remarkably decreased from 2500mPa·s to 50mPa·s. In the case of the PO/ethanol mixture, the fuel consumption of the engine increased relative to the amount of ethanol added, within 25-30wt%. Similarly, relative to the increase in ethanol added, the fuel consumption of the PO/DO/ethanol mixture increased while the calorific value decreased. For the PO/DO mixture, harmful gases such as CO2 and SOx were sparsely detected in the combustion exhaust gas, as determined by using the gas detection glass tube and air pollution gas detectors. In addition, the power generation performance with the PO/DO mixture was almost equal to commercial diesel fuel. Therefore, although the ignition speed was about 0.5-2ms slower, the PO/DO fuel mixture containing DO of 60-80wt% is considered to be almost as effective as commercial diesel fuel.
2010-04-30

菜種油中熱分解による廃棄ポリウレタンフォームのリサイクルに関する研究

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