Journal of the Fuel Society of Japan
Online ISSN : 2185-226X
Print ISSN : 0369-3775
ISSN-L : 0369-3775
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Volume 36, Issue 11
Displaying 1-17 of 17 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1957 Volume 36 Issue 11 Pages 817
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.817
    JOURNAL FREE ACCESS
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  • Spray Type Ammonium Sulfate Saturator
    Takuzo Okamura, Yuukichi Nakajima, Masaichi Ishibashi
    1957 Volume 36 Issue 11 Pages 818-824
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.818
    JOURNAL FREE ACCESS
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    Spray type ammonium sulfate saturator was installed instead of usual batch type saturator in our factory. Good points of this unit are low gas friction and consequent low electric consumption of gas blower. The solution is agitated vigorusly so that formation of large crystals is difficult. This problem and frequently occurances of mechanical trobles are the large two defects of this unit. Automatic controls of acidity of solution and flow of gas are the most necessary subjects to apply to this unit.
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  • Petrological Studies of Miike Coal (1)
    Tadashi Nakagome, Susumu Yoshida, Tamotsu Matsuura, Hidehiko Sugimura
    1957 Volume 36 Issue 11 Pages 825-830
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.825
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    have made the systematic studies of Miike Coal since 1950. In this paper we describe the petrological study among them. The petrological study is important not only for the research of coal, but also for the foundation of the coal chemical industry. At first, seeing from the petrological point of view, we discernded qualitatiire difference between Miyanoura groups and Mikawa groups of Miike Coal. Then, having examined the generally used methods for quantitative classification of coals, we found the new quantitative classification method to be fit for Miike Coal, and we recognized the existence of Semifusinit, Fusinit, and something like Mikrinit, in Miike Coal.
    In the following paper we will report on the characteristics and the separations of the petrological constituents of Miike Coal.
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  • Principles of Coal Blending in Coke Manufacture
    Yuji Yoshida
    1957 Volume 36 Issue 11 Pages 831-840
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.831
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    Japanese coals are high in volatile matter and do not give hard cokes without blending with “strongly coking coals” which are mainly imported. The author analysed the results from the coking tests of typical blends and obtained the following conclusions. So far as the free swelling number of a coal blend is over 3I/2, the 15mm drum index y (JIS drum test) of the coke is a function of the volatile mattercontent of the blend as expressed in the following formula:
    y=aebx+ (c1 8<x<42)
    in which the constants a, h and c are -0.000175, 0.286 and 94.2 respectively, in the present experiments. From this, the following relation can be derived:
    y=c-(c-y0) e-ke, k=h (v2-v1)
    where z is the fraction of the strongly coking coal in the blend, yo is the 15mm drum index of the straight coke from high-volatile coal (base coal) and v1 and v2 are the volatile matter contents of coking coal and base coal, respectively. The strength of coke from blend is possibly estimated by these equations. According to another experiments on many coals, he concluded that a coal whose free swelling number is over 4I/2 and volatile matter content (d. a. f) ranges from 20 to 37.5 per cent may be defined as strongly coking one and that the definition is applicable not only to straight coals but also to coal blends. He discussed briefly on the reasons why these two factors have influences on the coking properties of coal.
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  • Preparation of Hydrogen Peroxide by the Vapor Phase Oxidation of Isopropylalcohol with Oxygen.
    Shigeru Tsutsumi, Noboru Sonoda
    1957 Volume 36 Issue 11 Pages 841-845
    Published: November 20, 1957
    Released on J-STAGE: October 21, 2011
    DOIhttps://doi.org/10.3775/jie.36.841
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    A mixture of isopropylalcohol and oxygen in a mol ratio of 2: 1 was reacted at a residental time of about 2-10 min. The formation of hydrogen peroxide began at 195°C and was maximum at 310-320°C and the concentration of hydrogen peroxide in the reaction product was 6-7%.
    In this oxidation reaction, the wall effect of reaction tube was remarkable, and thepretreatment of the internal surface of reaction tube (hard glass) by hydrogen peroxide solution at room temperature or at-about 300°C was found to be effective andstrictly necessary.
    As to the effect of residental time at 320°C, 4-8 min was found to be proper and thedecrease or increase. in the residental time resulted in the decrease of the yield and concentration of hydrogen peroxide.
    With the increase in the ratio of oxygen to isopropylalcohol, the yield and concentration of hydrogen peroxide was increased, but seeing from the standpoint of explosion, a ratio of 1: 2 was concluded to be preferable.
    The addition of water to isopropylalcohol resulted in the decreases in the yield and concentration of hydrogen peroxide.
    Air seems to be able to use in place of oxygen as an oxidant.
    The maximum yield of hydrogen peroxide for reacted isopropylalcohol reached up to 53.3% in a range of about 30-40% conversion of isopropylalcohol.
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  • Influence of the Rock Temperature on the Oxydasion of Coal in the Coal Mine
    Tsunetaro Kato, Takahiro Tsutui, Kunjun Morikawa, Kunio Hirayama
    1957 Volume 36 Issue 11 Pages 846-852
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.846
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    In many cases, the self-ignition of coal in the Coal mine results in the accumulation of the oxydation heat of coal. From this fact, it is evident the Oxydatio heat quantities can be obtained from the absorbed oxygen amounts in coal, and the degree of the rock temperature in the coal mine relates to the self-ignition of the coal seam in coal mine.
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  • Erratum
    1957 Volume 36 Issue 11 Pages 852a
    Published: 1957
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.3775/jie.36.11_852a
    JOURNAL FREE ACCESS
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  • Erratum
    1957 Volume 36 Issue 11 Pages 852b
    Published: 1957
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.3775/jie.36.11_852b
    JOURNAL FREE ACCESS
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  • Erratum
    1957 Volume 36 Issue 11 Pages 852c
    Published: 1957
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.3775/jie.36.11_852c
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 854
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.854
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 854a-855
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.854a
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 855-856
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.855
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 856
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.856
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 857-860
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.857
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 860-861
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.860
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 862-864
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.862
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1957 Volume 36 Issue 11 Pages 864-865
    Published: November 20, 1957
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.36.864
    JOURNAL FREE ACCESS
    Download PDF (340K)
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