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Clarification of exothermic reaction mechanism in pyrolysis of bamboo biomass and application to low temperature oil conversion of waste plastic

Research Project

Project/Area Number 17K06196
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Thermal engineering
Research InstitutionYamaguchi University

Principal Investigator

Tatsuo Nishimura  山口大学, その他部局等, 名誉教授 (90136135)

Co-Investigator(Kenkyū-buntansha) 田之上 健一郎  山口大学, 大学院創成科学研究科, 教授 (70293892)
國次 公司  山口大学, 大学院創成科学研究科, 助手 (10253171)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsトレファクション / 高位発熱量 / 熱化学反応解析 / 共熱分解 / 発熱反応 / 吸熱反応 / 竹バイオマス / プラスチック熱分解 / 熱・化学反応 / バイオマス熱分解 / 化学反応熱 / 竹の低温熱分解 / 廃プラの低温油化
Outline of Final Research Achievements

The purpose of this study was to implement three items: elucidation of thermal decomposition behavior of bamboo, elucidation of thermal decomposition process of plastic and solid fuel production by co-pyrolysis of bamboo and plastic. Bamboo was mainly consisted of xylan and lignin, and an exothermic reaction was observed during torrefaction. It was clarified that the experimental results can be generally reproduced by heat transfer and chemical reaction considering heat transfer, Darcy flow, and thermal decomposition reaction. It was found that plastics are classified into a slow pyrolysis zone of about 100 kJ/mol and a fast pyrolysis zone of 40 kJ/mol. Furthermore, we carried out a pyrolysis experiment using a mixture of polystyrene and bamboo, and found that the higher calorific value was higher than that of coal when polystyrene content exceeded 50 wt %.

Academic Significance and Societal Importance of the Research Achievements

本研究は,バイオマス熱分解の一般化を目指しており,その中で竹の熱分解過程は,主要成分の反応速度の和によっておおむね再現可能であることを明らかにした.また,プラスチック熱分解はいずれの成分(ポリスチレン,ポリエチレン,ポリプロプレン)でも2つの活性化エネルギーをもつ低速熱分解域と高速熱分解域とに分類できることを明らかにした.さらに,竹―ポリスチレンの共熱分解を実施することにより,石炭と同等あるいはそれ以上の高位発熱量をもつ固体粒子の生成に成功している.本研究の成果は,未利用廃棄物資源からの新しい固体燃料活用法として貢献するものと期待される.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report

Research Products

(12 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Int'l Joint Research] ペトロナス工科大学(マレーシア)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Influence of volume shrinkage and water evaporation on heat transfer and chemical reactions during the pyrolysis of a cellulose-powder-packed bed2018

    • Author(s)
      K.Tanoue, Y. Hamaoka, T. Nishimura, M. Taniguchi and K. Sasauchi
    • Journal Title

      J. Int. Bio. Ren

      Volume: 7(2) Pages: 1-16

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Influence of volume shrinkage and water evaporation on heat transfer and chemical reactions during the pyrolysis of a cellulose-powder-packed bed2018

    • Author(s)
      Ken-ichiro Tanoue, Yuuki Hamaoka, Tatsuo Nishimura, Miki Taniguchi, Ken-ichi Sasauchi
    • Journal Title

      INTERNATIONAL JOURNAL OF BIOMASS AND RENEWABLES

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 竹とポリスチレンの共熱分解における温度変化およびガス生成に関する研究2020

    • Author(s)
      佐々木 祐太,田之上 健一郎,吉永 明寛
    • Organizer
      中国四国学生会第50回学生員卒業研究発表講演予稿集
    • Related Report
      2019 Annual Research Report
  • [Presentation] Study on thermal and chemical reactions during major components of woody biomass2019

    • Author(s)
      Tsuyoshi KOMOTO, Naoto MORISIGE, Ken-ichiro TANOUE
    • Organizer
      Joint conference on Renewable and Nanotechnology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study on heat and mass transfer during pyrolysis of various plastic powders2018

    • Author(s)
      K. Yamaji, T. Koumoto, K. Tanoue, T. Nishimura
    • Organizer
      JCREN2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study on adhesion of ash to metal surface in combustion of bamboo powder2018

    • Author(s)
      K. TAKATA, K.TANOUE, K,SASAUCHI, M. TANIGUCHI
    • Organizer
      JCREN2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study on characteristics of carbonization during torrefaction in the packed bed of biomass2018

    • Author(s)
      K. Hikasa, K. Tanoue, T. Nishimura, Y. Uemura, A. Hideno, M. Taniguchi, K. Sasauchi
    • Organizer
      JCREN2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] バイオマス主要成分の熱分解中における熱化学反応 に関する研究2018

    • Author(s)
      田之上健一郎,西村 龍夫
    • Organizer
      第13回バイオマス科学会議
    • Related Report
      2017 Research-status Report
  • [Presentation] バイオマス充填層のトレファクションにおける炭化特性に関する研究2018

    • Author(s)
      日笠謙太郎,田之上健一郎,西村 龍夫,谷口美希,笹内謙一
    • Organizer
      バイオマス科学会議
    • Related Report
      2017 Research-status Report
  • [Presentation] Modeling of Heterogeneous Chemical Reactions, Shrinking and Heat Transfer during Woody Biomass Pyrolysis2017

    • Author(s)
      K. Tanoue, T. Nishimura
    • Organizer
      6th Joint Conference for Renewable and Nanotechnology
    • Related Report
      2017 Research-status Report
  • [Presentation] Heat transfer and chemical reactions during pyrolysis of major components of woody biomass2017

    • Author(s)
      Ken-ichiro Tanoue, Tatsuo Nishimura, Yoshimitsu Uemura, Miki Taniguchi, Ken-ichi Sasauchi
    • Organizer
      the Ninth JSME-KSME Thermal and Fluids Engineering Conference
    • Related Report
      2017 Research-status Report
    • Invited

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Published: 2017-04-28   Modified: 2023-03-23  

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