成果報告書詳細
管理番号20140000000169
タイトル*平成25年度中間年報 バイオマスエネルギー技術研究開発 戦略的次世代バイオマスエネルギー利用技術開発事業(次世代技術開発) 水熱処理とゼオライト触媒反応による高品質バイオ燃料製造プロセスの研究開発
公開日2014/6/21
報告書年度2013 - 2013
委託先名国立大学法人鹿児島大学 千代田化工建設株式会社
プロジェクト番号P10010
部署名新エネルギー部
和文要約
英文要約Title : Project to Develop Next-generation Technology for Strategic Utilization of Biomass Energy. Development of Biomass Conversion Process for Producing High-quality Biofuel Using Hydrothermal Pretreatment and Catalytic Reforming with Zeolite (FY2012-FY2015) FY2013 Annual Report

In order to support the diversification of energy sources and reduce dependence on fossil fuels, we aim to develop a biomass conversion process producing high-quality bio-fuel based on a biomass utilization model integrated with sugar production processes. The bio-fuel is produced by catalytic reforming of oxygen-containing compounds (OCCs), which are supplied from hydrothermal treatment of bagasse and/or molasses. In FY2013, we have succeeded in obtaining real bio-fuel sample whose main component was BTX aromatics from bagasse supplied from sugar plant by demonstrating the whole treatment from hydrothermal to catalytic reforming. We have also confirmed that the produced bio-fuel could be blended at the ratio of around 20% into the conventional diesel fuel. Annual bio-fuel production amount is estimated to be equivalent to 4-5% of fossil fuels consumed for the power plant in the remote island in Japan when this process is integrated with sugar plant there. Summary of the research in 2013FY is as follows. 1. Pre-treating of biomass: The OCCs degraded from hemicellulose were obtained in the aqueous phase from sugarcane bagasse under the hydrothermal condition at 240 oC. The use of acid was useful to decrease the temperature to 180-200 oC, and to increase water/biomass ratio without decreasing the yield of OCCs. The viscosity of molasses could be reduced by adding small amount of water and warming. Investigation on the adsorptive removal of potassium from the molasses without reducing sugars was carried out to find a suitable adsorbent. 2. Catalytic reforming for the production of hydrocarbon bio-fuel: In the catalytic reforming step, aqueous solution of OCCs was fed to zeolite catalyst and converted into aromatic hydrocarbons. In order to increase the concentration of the OCCs before catalytic reforming, adsorption/desorption system was investigated to find a suitable adsorbent possessing high adsorption capacity and desorption rate even in the acid solution. The effect of reaction conditions at the catalytic reforming on the reaction performance was investigated, and 15wt% yield of bio-fuel was attained under the condition of catalyst/OCCs feed ratio of 1 wt/wt. 3. Product research: The effect of blending the bio-fuel with the conventional diesel fuels on the fuel properties and the combustion characteristics was studied using model bio-fuel. It is concluded that the blended fuel up to 20 mass% bio-fuel has almost the same start-ability and stability in the engine operation, the same thermal efficiency and the same exhaust emissions at high load conditions as conventional diesel fuel. 4. Process design: We have considered the conceptual process flow of this system and studied material and heat balance at each section to revealed that the concentration of OCCs by adsorption/desorption system could reduce required energy than distillation. And we have proposed the biomass utilization model integrated with sugar plant in the remote island in Japan.
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