No.68 粘結材添加がコークス原料炭の軟化溶融挙動に及ぼす影響(2)(熱分解・コークス素(3))

DOI

書誌事項

タイトル別名
  • No.68 Effects of HPC Addition on the Thermoplasticity of Coking Coals (2)

抄録

Compared with the conventional techniques, high temperature proton NMR relaxation measurement enable to monitor the actual changes in progress of thermal transformation. The quantitative change of specimens can be evaluated by recording the hydrogen content of residual specimens, and qualitative variation of the specimen is able to detect as a change of the relaxation characteristics of signal. In this study, thermoplastic properties of coal, coal blend and coal blend with "High Performance Coking additive, HPC" are investigated by means of proton NMR relaxation measurement from the viewpoints of molecular mobility. The solid echo pulse sequence was employed to generate ^1H-NMR transverse relaxation signals. The echo signals obtained during heat treatment under a flow of nitrogen at a heating rate of 3K/min were deconvoluted into a set of one Gaussian and two Exponential decay components which represent the immobile, intermediate and mobile component, respectively. It is demonstrated that ^1H-NMR relaxation measurement is the appropriate dynamic measurement technique to characterize the thermoplastic properties of coal. Thermoplastic phenomenon of coal is evaluated both qualitatively and quantitatively by the variation of IHm and T2Hm. HPC is effective additive to improve the thermoplasticity of coal blend. The improvement of the thermoplasitic phenomenon of coal blend with HPC is attributed to the quantitative and qualitative change of Hm.

収録刊行物

詳細情報 詳細情報について

  • CRID
    1390001205769993216
  • NII論文ID
    110009560552
  • DOI
    10.20550/jiesekitanronbun.49.0_132
  • ISSN
    24238309
    24238295
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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