Journal of the Fuel Society of Japan
Online ISSN : 2185-226X
Print ISSN : 0369-3775
ISSN-L : 0369-3775
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Volume 53, Issue 9
Displaying 1-9 of 9 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1974 Volume 53 Issue 9 Pages 755-756
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_755
    JOURNAL FREE ACCESS
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  • Koppers-Totzek Coal Dust Gasification Process
    Volkhard Ingenhoff
    1974 Volume 53 Issue 9 Pages 757-761
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_757
    JOURNAL FREE ACCESS
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    An Outline of the modern Koppers-Totzek Process has been given on this paper. Especially, a short survey regarding the most important reactions during gasification, a description of the process, operating figures and investment costs are described. And this paper is based on the report of Mr. H. Staege, chief engineer, Heinrich Koppers GmbH., Essen, Germany.
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  • Erratum
    1974 Volume 53 Issue 9 Pages 761
    Published: 1974
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.3775/jie.53.9_761
    JOURNAL FREE ACCESS
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    [in Japanese]
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  • Energy Saving by Submerged Combustion
    Kiyotaka Sakai
    1974 Volume 53 Issue 9 Pages 762-773
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_762
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    Submerged Combustion Process has attracted special interest recently, because a main feature of large thermal and evaporation efficiency in such process is peculiarly suitable for the present energy saving. The submerged combustion, however, is not always good in efficiency with wrong application. Energy saving is possible again by means of euergy recovery of the steam latent heat in the off-gas through a coolei condenser.
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  • The Reaction of Steam and Extractive Chemical Disintegration Residues of Coals under Hydrogen Pressure
    (II) Various Changes of the Properties of the Reaction Products with the Reaction Time and the Reaction Mechanism
    Mikio Morita, Kunio Hirosawa
    1974 Volume 53 Issue 9 Pages 774-778
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_774
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    Following the previous report, the present work was undertaken to investigate the possibility of utilizing extractive chemical disintegration residues of coals under hydrogen pressure.
    Various changes of properties of the reaction products with the reaction time were studied after which the reaction mechanism involved in the changes was considered.
    As a result of our experiments, it was found that
    (a) Within a reaction temperature range of 600-950°C, it was noted that when the reaction temperature was low and the reaction time was long the surface area of the residue increased.
    But in the case of the Methylene blue absorbability, with higher reaction temperatures, the absorbability was highered.
    The properties of the reaction residues changed with the reaction time.
    (b) The ratio of the reaction gas constituent changed with the reaction time. The main reaction produced gases were H    2, CO and CO2. Therefore the extractive chemical disintegration residues of coals may be used as raw material for the production of reducing gas.
    (c) From the experimental results, we assumed a sequence of the consequtive reactions of a zero order and caluculated the activation energies and the activation entropies.
    The changes with the progress of the reaction correspondeb to the observed results.
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  • Studies on Test for Plastic Properties of Coal by Gieseler Plastometer
    Investigation of the standarization of the Gieseler Plastometer
    Hidetosi Morotomi, Nobuo Suzuki, Takasi Miyazu, Masaru Simura
    1974 Volume 53 Issue 9 Pages 779-790
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_779
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    A method for the determination of the plastic properties of coal using a constant torque Gieseler Plastometer is very useful to evaluate the metallurgical coals. But the most weak point of this method has been considered as the insufficient reproducipility between different laboratories.
    Therefore, we studied on the standarization of the Gieseler Plastometer and the behavior of coals in the plastic stage using standard substance and retort made of acrylonitoril resin or quartz-glass.
    Informations obtained are as follows
    1. It is possible to improve the reproducibility using some standard substance, for example, Polybutene NO.2 or No.3 which is considerable as newtonian fluid, for calibrating each apparatus.
    2. Using the standard substance of polybutene, it is recognized that the relations between fluidity (F), torque (Tq) and viscosity (η) are described by the following equation:
    F=K0η (Tq-Tqs) α
    where α=1, F <5000 ddpm
    α>1, F>10000 ddpm
    K0 is coefficient determined shape of the rabble arms and retorts. Tqε is the loss of the torque caused of the mechanical friction.
    Therefore, for the purpose of calibration of the apparatus, it may be necessary to prescribe the values of K0 and Tqε.
    3. Weissenberg effect is observed in the plastic stage of high fluidity coals (ex. domestic coals), that is, hollow space is found inside of the retort.
    From these observation, it may be concluded that the reinvestigation of the method is necessary for the high fluidity coals.
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  • The Examination for Industrialization of MgO-CaO-Al2O3-NiO System Catalyst
    Susumu Komatsu, Goro Yamaguchi
    1974 Volume 53 Issue 9 Pages 791-798
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_791
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    The examination for industrialization of MgO-CaO-Al2O3-NiO system catalyst and the betterment of this catalyst in using for the catalytic cracking of heavy oil and the partial combustion reaction of naphtha was carried out.
    As the results, the following facts was clarified.
    1) In the case of catalytic cracking of heavy oil by using MgO-CaO-Al2O3-NiO sistem catalyst, the town gas of calorific values of 5000-5500 kcal/m3 and hydrogen content of 40% or more was produced under the conditions of reaction temperature of 900-950°C, space velocity of 1.0, steam/oil ratio of 1.0 and thermal yields of 700 JHU or more as shown Table 6.
    2) In the case of partial combustion reaction of naphtha by using the betterment catalyst, the town gas of calorific values of 3500kcal/m3 and hydrogen contents of 35% was prodused under the conditions of air/oil ratio (m3/1) of 1.0 and thermal yields of 700 JHU as shown in Table 7.
    3) MgO-CaO-Al2O3-NiO system catalyst and the betterment catalyst as the basic nickel catalyst for the catalytic cracking of heavy oil and the partial combustion reaction of naptha were succeeded for industrial use.
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  • [title in Japanese]
    [in Japanese]
    1974 Volume 53 Issue 9 Pages 799-804
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_799
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  • [title in Japanese]
    1974 Volume 53 Issue 9 Pages 812-817
    Published: September 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.9_812
    JOURNAL FREE ACCESS
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