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成果報告書詳細
管理番号20180000000565
タイトル*平成29年度中間年報 ベンチャー企業等による新エネルギー技術革新支援事業/ベンチャー企業等による新エネルギー技術革新支援事業(バイオマス)/FCC (流動接触分解)を利用したバイオ燃料製造システムの開発
公開日2018/12/14
報告書年度2017 - 2017
委託先名株式会社ユーグレナ 国立大学法人信州大学 千代田化工建設株式会社
プロジェクト番号P93011
部署名イノベーション推進部
和文要約
英文要約Title : An Innovative Project for New Energy Venture Technologies (Biomass). Development of biofuel production system using FCC (fluid catalytic cracking)(FY2017-FY2018) FY2017 Annual Report

Woody biomass is the most abundant natural resources and can be used as a feedstock for renewable fuels and chemicals. However, its energy density is much lower than that of petroleum-derived fuels because of its high oxygen content. Therefore, the efficient deoxygenation process is required for the conversion of biomass to hydrocarbon fuels. The aim of this project is to develop an efficient and low-cost conversion process of woody biomass into valuable hydrocarbons that can be used as transportation fuels by direct mixing with petroleum-derived fuels such as gasoline (Drop-in fuels).
    To achieve our goal, we focused on a fluid catalytic cracking (FCC) process. FCC process is one of the major oil refining technologies that converts heavy oil feedstocks to valuable light fractions such as gasoline and naphtha. FCC process is operated under H2-free atmosphere, and the feedstocks are converted via cracking, isomerization, cyclization and hydrogen-transfer reactions on acid sites of zeolite catalysts. In a co-processing of biomass and heavy oil feedstocks, the hydrogen transfer reaction can contribute to an efficient deoxygenation without using hydrogen atmosphere; hydrogens are released from heavy oil feedstock and received by oxygenates via hydrogen transfer reaction and then H2O are produced. Therefore, FCC process is expected to be suitable for conversion of biomass resources with high oxygen content.
    During Phase A (May 2017 ― March 2018), we mainly focused on a liquefaction of woody biomass, which is an essential pretreatment process before introducing to FCC process. Liquefaction of woody biomass can reduce logistic cost and enhance reactivity in FCC process.

(a) Liquefaction of lignocellulosic biomass
    As a pretreatment process before FCC, we investigated a solvolysis process. Palm kernel shell (PKS) sample was mixed with a solvent, water, and organic acid and heated in an autoclave reactor. Parametric study with various reaction condition (temperature, pressure, reaction time, feedstock composition, etc.) revealed that PKS can be liquefied efficiently with the solvolysis process.

(b) Co-processing of liquefied biomass and heavy-oil-model compound in FCC
    Bio-oil prepared from solvolysis of PKS were mixed with a heavy-oil-model compound (n-eicosane) and co-processed in a laboratory scale fixed bed reactor. Reaction product analysis revealed that most of the bio-oil components were deoxygenated and converted to hydrocarbons. Main deoxygenation route was H2O formation rather than CO2 or CO formation even under H2-free atmosphere. The H2O formation route can convert most of the carbon resources contained in a biomass feedstock to hydrocarbons whereas the CO2 and CO formation routes result in a partial carbon loss. Therefore, FCC process was confirmed to be an efficient process for biomass conversion.
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