Gasification Characteristics of Biomass in a Fluidized Bed Gasifier with Triple-beds and Dual Circulation

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  • MURAKAMI Takahiro
    National Institute of Advanced Industrial Science and Technology (AIST), Energy Technology Research Institute, Clean Gas Group
  • ASAI Minoru
    National Institute of Advanced Industrial Science and Technology (AIST), Energy Technology Research Institute, Clean Gas Group
  • SUZUKI Yoshizo
    National Institute of Advanced Industrial Science and Technology (AIST), Energy Technology Research Institute, Clean Gas Group

Bibliographic Information

Other Title
  • 二重循環三塔型流動層ガス化炉ホットモデルによるバイオマスのガス化特性
  • ニジュウ ジュンカン サントウガタ リュウドウソウ ガスカロ ホットモデル ニ ヨル バイオマス ノ ガスカ トクセイ

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Abstract

  A new type of circulating fluidized bed gasifier, called “fluidized bed gasifier with triple-beds and dual circulation”, was proposed. The objectives of this work are to clarify the gasification characteristics of biomass by using a laboratory-scale hot model gasifier and to compare the characteristics of biomass and coal. The tested biomass is wood pellet. As a result, the cold gas efficiency of wood pellet is higher than that of coal. The wood pellet is easy to gasify because the volatile matter content in the pellet is considerably high. Additionally, the amount of H2 formed is higher than that of the CO formed in both conditions since the amount of H2 increases due to the partial cracking of absorbed tar in porous alumina particles. The proposed gasifier can make porous alumina particles absorb tar, which is formed by the pyrolysis reaction, efficiently.

Journal

  • Journal of Smart Processing

    Journal of Smart Processing 1 (2), 79-82, 2012-03-20

    Smart Processing Society for Materials, Environment & Energy (High Temperature Society of Japan)

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