P-407 メカノケミカルパルピング前処理によるエタノール製造プロセスの経済的要因分析(ポスター1,ポスター発表)

概要

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NEDO "Accelerated Technology Development for Biofuel; R & D for Bioethanol Production by Mechanochemical Pulping" has started since 2006. The material/energy balance and economy in the total process has been analyzed using the process simulator. It was reported by the previous work that it is possible to produce for 40.9yen per 1L of cellulosic ethanol when all the development goals are achieved in the concentrated sulfuric acid process. This study took up the cost 7.2yen/L-EtOH of steam/power and sulfuric acid of the concentrated sulfuric acid process, and the cost was compared with the cost of steam/power and alkali/enzyme of the mechanochemical pulping process. The refiner power consumption is an important economic factor of the process. When the refiner power is 100kWh/dry-t, the cost of steam/power and alkali/enzyme is calculated with 7.1yen/L-EtOH. It is indicated that there is a possibility to achieve the development target cost. In general, it is thought that it is effective for the distillation energy saving to reduce the moisture content of the reaction vessel. However, it became clear that it was economically disadvantageous to reduce the moisture content because the amount of recycled enzyme was decreased.
2010-01-20