粉粒流動層による石炭の接触熱分解　硫黄分添加による触媒活性の制御

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タイトル別名
  • Catalytic Pyrolysis of Coal in a Powder-Particle Fluidized Bed. Control of catalytic activity by adjusting the sulfur content.
  • フンリュウ リュウドウソウ ニ ヨル セキタン ノ セッショク ネツ ブンカイ
  • Control of catalytic activity by adjusting the sulfur content
  • 硫黄分添加による触媒活性の制御

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In a process of catalytic pyrolysis of coal using a powder-particle fluidized bed (PPFB), effects of sulfur content in the catalyst material were investigated, in order to obtain higher yield of light aromatic hydrocarbons. The pyrolysis of Taiheiyo coal was carried out by using commercial catalyst material, and the variations of products distributions and their yields with sulfur content in the catalyst adjusted by sulfuric acid were measured. It was found that catalytic activity can be controlled by adjusting the sulfur content. In the case of CoMo/Al2O3 (S : 2.26wt%), 7.2 [wt%, daf] of light aromatic hydrocarbons, i.e, benzene, toluene, xylene and naphthalen (BTX : 5.3 [wt%, daf], N : 1.9 [wt%, daf]) were obtained under the conditions of bed height of 0.08m, hydrogen flow rate of 0.24m·s-1 and pyrolysis temperature of 903K. Their yields were as high as that reported in the previous paper, but the amounts of catalyst loading and hydrogen flow rate were smaller.

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