石炭地下ガス化過程における燃焼帯の移動速度

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書誌事項

タイトル別名
  • On the Removal Velocity of Combustion Reaction Zone in Process of Underground Gasification of Coal
  • セキタン チカ ガスカ カテイ ニ オケル ネンショウタイ ノ イドウ ソクド
  • ガス流方向への移動速度
  • Velocity in direction of flow of gas

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抄録

It's very important to study the removal velocity of combustion reaction zone in process of underground gasification of coal. In this paper, the author examined this problem theoreticallyand experimentally. On the same problem, CMHPHOO in U. S. S. R. examined mathematically and derived a equation of removal velocity. He discussed it about very fine particles of coal. The author derived a equation of removal velocity as a function of particle size on the assumption that the combustion of coal is thermal decomposition of coal particles. Removal velocity can be expressed by the following equation given by the author<BR>υ2=λ2κγ03T2/cρ2πζ94WQ (1-T1/T2){1-(T0/T2) 2}<BR>where, υ-removal relocity of combustion reaction zone λ-thermal conductivity of coal κ=μ/λ, ;μ-heat transfer coefficient λ1-thermal condudivity of cemented cover.γ0-radius of a particle with cemented cover. T2-highest temperature in burning zgne c-specific heat of coal ρ-specific weight of coal, π=3.14 ζ0-radius of a Particle of coal W=2γ02-ζ0γ0 Q-heat of decomposition T1-temperature of coal seam T0-ignition temperature of coal<BR>According to the theoretical examine, when a particle size of coal is not small, we know, this velocity is very slow.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 78 (887), 385-389, 1962

    一般社団法人 資源・素材学会

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