成果報告書詳細
管理番号20100000001516
タイトル*平成21年度中間年報 新エネルギー技術研究開発 バイオマスエネルギー等高効率転換技術開発(転換要素技術開発) バイオマス熱的ガス化液体燃料触媒合成における精密ガス精製に関する研究開発
公開日2010/9/30
報告書年度2009 - 2009
委託先名三菱重工業株式会社
プロジェクト番号P07015
部署名新エネルギー技術開発部
和文要約和文要約等以下本編抜粋:1. 研究開発の内容及び成果等 1.1 研究開発の背景および内容 バイオマスの熱化学的ガス化液体燃料触媒合成技術の利用により、多種のバイオマスから様々な液体燃料を製造可能であり、リグノセルロース系バイオマスに対しても非常に短い反応時間でガス化・合成が可能である。しかしながら本技術が実用化に至っていない要因として、ガス精製が技術面でのボトルネックになっていることが挙げられる。 バイオマスガス化ガスからの液体燃料触媒合成においては、従来の精密精製技術では、H2Sに対してはZnO吸着塔により0.1ppm未満を達成するものの、触媒費用だけで年間数億円程度のランニングコストが発生する。また、タールについては、活性炭等による精密精製では現状の実績が1mg/Nm3程度であり、メタノール合成触媒の許容値0.1mg/Nm3を満足していない。そこで、本研究では、触媒費用を低減した低コストな精密精製手段により、メタノール合成触媒の許容値であるH2S濃度0.1ppm未満、タール濃度0.1mg/Nm3未満まで低減させることを目標とする。
英文要約Title : Research and Development of Advanced Synthesis Gas Purification Process for Biomass Thermochemical Gasification and Catalytic Liquefaction (FY2009-FY2010) FY2009 Annual Report
1.”R&D Background” : By using the Biomass Thermochemical Gasification and Catalytic Liquid Fuel Synthesis Technology, wide variety of liquid biofuel can be produced from various biomass, and also non-edible lignocellulosic biomass can be gasified and converted into biofuel at very short reaction times. To synthesize biofuel. catalytic poison substances in gasified synthesis gas should be reduced to below permitted impurity content value of synthesis catalyst by strict purification. However, gas purification process using activated carbon or adsorption catalyst has high running cost. Therefore, it is hoped a low-cost gas purification process will be developed. 2. “R&D Subjects & Objectives” : In this R&D, low cost strict purification technology which uses recycled char and biomass will be developed based on tar and char recycling technology which was developed between FY2005-2006. Advanced purification system which uses biomass particles and biomass char as adsorbent, and has lower cost than conventional method which uses activated carbon or catalysis, will be developed. The objective of this R&D is to satisfy permitted impurity content value of methanol synthesis catalyst: 0.1mg/Nm3 of H2S and 0.1mg/Nm3 of tars, using this system. 3. “R&D Items and result”: (1) “Investigation and Experimental Study for Inlet and Outlet Condition of Gas purification process.” : Biomass Gasification test had examined and a gas conversion data such as Sulfur, Nitrogen, Tar has obtained. (2) “Study for Totally Optimized Purification Process”: Basic design of a dust removal system and a heat exchanger has conducted, considering a cost and process reliability. (3) “Development of Advanced Purification Process Alternative for Activated Carbon Fixed Bed”: The fixed bed adsorption test, using a biomass and a biomass char as adsorbent, had examined. The result shows that the biomass char and the biomass char with biomass adsorbent have a larger adsorption capacity both for H2S and tar than the single biomass adsorbent. So, it is effective that mixing the biomass char to the biomass fixed bed enhances adsorption capacity. (4) “Investigation Study about Property of Biomass and By-product from Gasification”: The basic properties of adsorbent, such as particle properties and an adsorption capacity, have investigated by various instrumental analysis. Totally optimized purification process will be developed and build by the elementary study of each gas purification equipment in next year.
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