Institute for Materials Chemistry and Engineering, Kyushu University


LAST UPDATE 2017/02/25

  • 研究者氏名
    Researcher Name

    林潤一郎 Jun-ichiro HAYASHI
    教授 Professor
  • 所属
    Professional Affiliation

    Institute for Materials Chemistry and Engineering, Kyushu University

    Laboratory of Microprocess Control, Division of Advanced Device Materials
  • 研究キーワード
    Research Keywords

    Low rank carbon resources such as lignite and biomass
    Thermochemical and thermocatalytic conversion
    Syngas and chemicals
    Carbon materials
    Reaction and reactor design
    Local energy/material conversion
Research Subject
Sequential thermochemical and catalytic conversion processes

研究の背景 Background


Low rank coals such as lignites and brown coals, which are important carbon resources form a viewpoint of energy security, have particular properties with negative impacts on conventional conversion technology. Effective use of those resources has been realized within a limited range, but should be done by taking most advantage of their properties. While biomass has properties (as a fuel) similar to those of lignites, it has a quite high potential as feedstock of chemicals and materials. In addition, it is a domestic carbon resource, which is essential in future evolution of primary industries.

研究の目標 Outcome


Experimental and numerical studies have been in continuation on physicochemical upgrading, and catalytic, thermal and electrochemical conversions (pyrolysis, gasification, carbonization, etc.) of lignite and biomass based on chemical reaction engineering. The ultimate goal of those studies is proposal/demonstration of ‘high value added’ coproduction processes and their sequences/networks.

研究図Research Figure

Fig.2. Light oils (a, b) and tar-free active charcoal (c) from heavy-oil recycling pyrolysis of lignite and biomass. Highstrength coke from sequential hot/binderless briquetting and carbonization of lignite (d). Fig.1. Schematic diagram of 4-th generation gasification (K-catalyzed twostage gasification), which enables complete and tar-free conversion of biomass and lignite with chemical energy loss as small as 4%-LHV. Fig.3. Performance of 5-th generation gasification (catalytic hydrothermal gasification in alkaline aqueous media). Lignin in black liquor lignin is converted over a Ru/C catalyst completely with production of CH4/H2-rich syngas.

文献 / Publications

Low temperature Gasification of Biomass and Lignite: Consideration of Key Thermochemical Phenomena, Rearrangement of Reactions, and Reactor Configuration. Jun-ichiro Hayashi, Shinji Kudo, Hyun-Seok Kim, Koyo Norinaga, Koichi Matsuoka, Sou Hosokai. Energy & Fuels 2014, 28, 4–21.