石炭液化油中質油留分の水素化処理および生成油の評価　Ｖ　　生成油組成に及ぼす水素化処理条件の影響

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書誌事項

タイトル別名
  • Hydrotreating of Coal Derived Middle Distillate and Evaluation of the Hydrotreated Oil (Part 5)
  • 生成油組成に及ぼす水素化処理条件の影響
公開日
1984
DOI
  • 10.1627/jpi1958.27.433
公開者
公益社団法人 石油学会

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説明

Hydrotreatment of coal derived middle distillate, obtained from the liquefaction of Wandoan coal using 1 t/day bench unit, was performed to clarify the effects of catalyst species, reaction temperature and hydrogen pressure on the chemical composition of the product. Experimental runs were carried out over alumina supported Co-Mo and Ni-Mo catalysts in a fixed bed reactor of 20ml in volume at 350-390°C under hydrogen pressure of 25-100kg/cm2•G with LHSV of 1hr-1. The product, as analyzed by gas chromatography, consisted mainly of benzene, cyclohexane, indane, tetralin, naphthalene, biphenyl, acenaphthene, dibenzofuran, fluorene and phenanthrene with their alkyl substituted or/and hydrogenated derivatives. (Table 1) According to the distribution of products obtained from the reaction using Co-Mo and Ni-Mo catalysts, the latter species of catalyst had relatively higher activity in hydrogenation of aromatic nuclei than the former catalyst. Composition of tetralin increased at 370°C, but decreased at much higher temperature of 390°C. (Fig. 1) The amount of tetralin increased sharply by elevating hydrogen pressure. (Fig. 4) Other major aromatic compounds such as naphthalene, dibenzofuran and fluorene decreased in composition with higher temperature and hydrogen pressure. (Figs. 1 and 4) Products distribution of methylnaphthalene-methyltetralin and phenanthrene-hydrogenated phenanthrene systems in the products was discussed in terms of the selectivity of hydrogenation.<br>Ratios of 5-methyltetralin (5-MT) to 1-MT produced from 1-methylnaphthalene were observed to be 2.5 for Co-Mo and 2.1 for Ni-Mo catalyst at 370°C in which the former value was in good accord with the relevant report. Corresponding ratios of 6-MT/2-MT produced from 2-methylnaphthalene were 1.5 and 1.7, respectively. The effects of reaction temperature and pressure on the chemical composition in methylnaphthalene-methyltetralin and phenanthrene-hydrogenated phenanthrene systems were also discussed in detail. (Figs, 2, 3, 5 and 6)

収録刊行物

  • 石油学会誌

    石油学会誌 27 (5), 433-439, 1984

    公益社団法人 石油学会

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