73.水素気流中での石炭熱分解による硫化水素の発生と灰分組成の関係

概要

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The amount of H_2S evolved during pyrolysis was analyzed by GC-MS for four kinds of raw coal samples and these coals were treated with HNO_3 or HF/HCl solution, in which inorganic sulfur was eliminated by acid treatment. In the case of HNO_3 treated samples, the evolution of H_2S at low temperature region, below 500℃, was reduced by the chemical oxidation. At high temperatures, the amount of H_2S evolution from acid treated coal was markedly increased compared to the raw coals, especially Taiheiyo and Wandoan through the elimination of minerals. From X-ray fluorescence analysis and X-ray powder diffraction of coal and char, it was confirmed that calcium in raw coal has an important role for the fixation of sulfur during pyrolysis.
一般社団法人日本エネルギー学会の論文
1997-10-30