燃料協会誌
Online ISSN : 2185-226X
Print ISSN : 0369-3775
ISSN-L : 0369-3775
60 巻, 9 号
選択された号の論文の7件中1~7を表示しています
  • エネノレギー雑感
    神谷 貴
    1981 年 60 巻 9 号 p. 741
    発行日: 1981/09/20
    公開日: 2010/06/28
    ジャーナル フリー
  • 戴 和武, 欧陽 淵, 溜 恵正, 周 沢興
    1981 年 60 巻 9 号 p. 742-750
    発行日: 1981/09/20
    公開日: 2010/06/28
    ジャーナル フリー
    Coal reserves are abundant in China.Coal deposits range in various geologic ages and are widely distributed throughout the country.The ranks and quality of coal in China meet the demand of national economy and people's livelihood.In accordance with the basic circumstances of energy resources coal remains predominant in the country's energy supply.Therefore development of coal deposits with better technoeconomic coditions and construction of large coal basins are necessary;and on the other hand coal conservation and raise of coal ues efficiency are essential.All provinces, municipalities and autonomous regions have undertaken the management of coal mines.The annual coal output of China ranks third in the world.At present China is in a position to design, construct and equip large coal mines with annual capacity over 3 mllion tons all by herself ; mechanized shaft sinking and drifting, specialized methods of excavation such as freezing, drop shaft sinking and shaft drilling, fully mechanized longwalling and hydraulic mining have been applied in production and construction.Foundation has been laid in the area of surface mining, but production is still on a small scale.Development of large surface coal basins is carrying out now.The capacity of coal processing and utilization does not match with the scale of production and development.In the future the scope of coal processing and utilization needs to be enlarged, especially the coal preparation capacity have to be increased.Meanwhile adaptable technical approaches for coal processing and utilization have to be developed in order to improve the coal use efficiency.
  • 本田 英昌
    1981 年 60 巻 9 号 p. 751-761
    発行日: 1981/09/20
    公開日: 2011/02/23
    ジャーナル フリー
    The present trends of the research and development in the solvolysis liquefaction of coal are reviewed.It is stressed that the solvolysis liquefaction process is a hybrid process containing the lowtemperature thermal cracking of petroleum heavy residues and the liquefaction of coal by extractive chemical disintegration.For the more development of the solvolysis liquefaction, the importance of vehicles design is considered.And also the short contact time solvolysis and qualifying process of coal liquefaction is proposed.
  • 吉田 忠, 中田 善徳, 横山 慎一, 吉田 諒一, 奥谷 猛, 長谷 川義久, 上田 成, 前河 涌典, 神谷 博, 岡 直樹, 高橋 道 ...
    1981 年 60 巻 9 号 p. 762-770
    発行日: 1981/09/20
    公開日: 2011/02/23
    ジャーナル フリー
    The liquefaction of four coals (Yallourn, Soya-koishi, Taiheiyo, and Shin-yubari coals) with different coal ranks has been made by using the 0.1 tjd direct liquefaction test plant.The low rank coals generally produced larger CO, CO2 and H2O, derived from oxygen present in coal.The hydrogen consumption decreased linearly with the increase in the coal rank and the yield of coal-derived oil (b.p.IBP-325°C) was largest for Soya-koishi coal.The produced coal crude oil was fractionated into naphtha (IBP-200°C), middle (200-325deg;C), and bottom (325°C-) fractions by high-vacuum distillation, and the properties and chemical structures of three fractions were analyzed.The specific gravity of coal-derived oil was greater and the atomic ratio H/C was smaller, compared with the corresponding fractions of petroleum, but these values of three fractions have no great differences among coals.In conclusion, coal liquefaction depended largely on feed coal, but the properties, structural parameters and molecular weight distributions of coalderived oils were almost independent of feed coal under the same reaction condition
  • 閉回路粉砕システムの検討
    美浦 義明, 山口 徳二, 西 徹, 米 靖弘
    1981 年 60 巻 9 号 p. 771-779
    発行日: 1981/09/20
    公開日: 2011/02/23
    ジャーナル フリー
    In order to establish the commercial use of the closed-circuit crushing system for the coal charge using the new vertical centrifugal screen, the crushing conditions and their effect on coke strength were investigated.In size control of the coal charge, the crushing of inert components to a specified fineness had been the major consideration so far.However, it has now been found that setting an upper limit for the sizing of reactive components is also an important factor in the forming of coke.On the basis of these results, the new, two-stage, closed-circuit crushing system (CPC-P: Coal Preparation Control Process) was proposed.
    By applying this system to the manufacture of coke, it is possible to obtain coke with higher strength than the conventional crushing process by 2 digits on the drum index DI15: 5, and by 1 digits on the former SOVACO process.This high strength is due to the increased uniformity and bulk density of the coal charge, and the higher uniformity of coke texture.As a result, 5-10% of good-caking American coal can be replaced with low-rank or high inert coal.
  • 廣瀬 正巳, 川和田 邦男, 青木 宏之, 柳井 弘
    1981 年 60 巻 9 号 p. 780-786
    発行日: 1981/09/20
    公開日: 2010/06/28
    ジャーナル フリー
    A basic study on producing activated carbon from the rubber wood charcoal using both a rotary kiln and a shaft furnace was performed, and the following results were obtained.
    (1) As the operation conditions for producing activated carbon with a decoloring power of over 160 me/g for Methylene Blue solution, 1000°C of activation temperature, 30min.of retention time and steam-char ratio of approx.1.7, granular size of charcoal smaller than 10mm are suitable for the rotary kiln, and under such conditions the yield is about 34-39%.
    (2) As the result of installation of a side burner around lengthwise middle of the rotary kiln to decrease temperature gradient, decoloring power of produced activated carbon is increased to 190-200 ml/g for Methylene Blue solution without decreasing the yield.
    (3) As the operation conditions for producing activated carbon, charcoal granular size 12 80 mesh, activation temperature 1120°C, steam-char ratio approx.0.4 are suitable for the shaft furnace, and the yield is 25-30%.Decoloring power of produced activated carbon is approx.140 rne/g for Methylene Blue solution, but the power can be increased to more than 160 me/g by water and acid washing to remove most of ash.
  • 小川 勝
    1981 年 60 巻 9 号 p. 787-796
    発行日: 1981/09/20
    公開日: 2010/06/28
    ジャーナル フリー
    The researches in classification of the various types of crude oils were carried out by the high pressure liquid chromatography (HPLC) and by the fluorescence spectrophotometry.
    Checking up about seventy crude oils, it was found that they could be grouped into six classes (a-f type) by the results of U.V.patterns and R.I.patterns of HPLC, and also into six classes (3-8 type) by the results of fluorescent spectrum.
    And it was found that crude oils could be classified in almost all cases by the results of HPLC, fluorescent spectrum, sulphur/nitrogen weight ratio and vanadium/nickel weight ratio.
    This method may be applied as one characteristic to identify similarity and kind of spilt oils.
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