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 7
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1974 Volume 53 Issue 7 Pages 607
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_607
    JOURNAL FREE ACCESS
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  • Lurgi Gasification Process of Coal under Pressure
    its Devlopement and Present State
    Tateo Takahashi
    1974 Volume 53 Issue 7 Pages 608-619
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_608
    JOURNAL FREE ACCESS
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    This report aims at examining and supplying information on: the basic idea and its development of Lurgi Coal Gasification Process under Pressure started in 1934, and conditions and circumstances of development after the World War II; the further development of this process which started to proceed again in the limelight under the recent energy situations in spite of the fact that the coal gasification process seemed once forgotten by people until only recently since 1950 due to the abundant lowpriced oil supply of the past years; various problems concerning the coal as gasification raw material, i. e. grain size, ash, reactivity, caking property, etc., and how Lurgi process tries to solve those problems; description of this process itself; how Lurgi Coal Gasification Process is adopted and is or to be utilized in various countries of the world under the present energy situations; re-examination of the Combined Cycle Process for power generation in West Germany, SNG production based on coal in U. S. A., F-T Synthesis in South Africa and West Germany ; as well as coal gasification problems for synthesis gas for fertilizer production plants in the developing countries.
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  • SNG Plant using CRG Process
    Yoshihito Imura
    1974 Volume 53 Issue 7 Pages 620-630
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_620
    JOURNAL FREE ACCESS
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    A SNG plant is now successfully under operation from December 1973 at Toyosu Works in Tokyo Gas Co. Ltd., employing CRG/HYDROGASIFICATION process developed by BGC to produce methane rich gas from naphtha with a capacity of 1, 110, 000 Nm3/d and calorific value of 9, 200 kcal/Nm3, containing 95% of CH4.
    This process is controlled finely and steadily by DDC system designed by Tokyo Gas and easily turned up and down from 100% to 40% load according to the demand requested.
    Production of SNG is significant for Tokyo Gas, now under way for conversion of town gas to natural gas.
    In this paper the process flow and performance of this plant are described generally.
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  • Development of Oil Sands Resources
    Hiroo Tominaga
    1974 Volume 53 Issue 7 Pages 631-639
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_631
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    Oil sands resources in Athabasca, Canada, and Orinoco oil belt, Venezuela, have been investigated. Their magnitude as bitumen in place is roughly comparable to that of conventional crude oil. The present proven technologies and some future technical developments required for extraction and up-grading of the potential hydrocarbon resources are discussed. Relevant commercial activities and their prospects in the near future are reviewed.
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  • The Reaction of Steam and Extractive Chemical Disintegration Residues of Coals Under Hydrogen Pressure
    The surface area of extractive chemical disintegration residues of coals under hydrogen pressure and of the reaction residues with steam
    Mikio Morita, Kunio Hirosawa
    1974 Volume 53 Issue 7 Pages 640-645
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_640
    JOURNAL FREE ACCESS
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    In order to estimate the possibility of converting extractive chemical disintegration residues of coals under hydrogen pressure to activated carbons, we investigated the influence of reaction temperatures (350-450°C), reaction times (0-720min.) and differance of various kinds of coals on the surface area of extraction residues, the reactivity of extraction residues with steam, and then the surface area of the reaction residues with steam at the temperature range of 600-900°C.
    The results showed that
    (a) Extractive chemical disintegration residuesof the lower rank coals had the higher reactivity and the larger surface area.
    (b) The surface area of extraction residues produced at the lower temperatures was larger. At the reaction temperature above 375°C that the disintegration reaction occurred vigorously, it showed a tendency of the incdease at the initial reaction stage and then the decrease, but at 350°C it increases firstly and then keepes constant value during reaction time.
    (c) Extraction residues which had the larger surface area gave the products with larger surface area.
    (d) The bitumious coals treated by the extractive chemical disintegration were also converted to the products with large surface area.
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  • Pyrolysis of Plastic Wastes (I)
    Pyrolysis of Polystyrene with Twin Screw Pyrolyzer
    Hiroshi Ando, Osamu Inomata, Toshiji Abe, Sadao Matsuzawa, Yukio Shimi ...
    1974 Volume 53 Issue 7 Pages 646-653
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_646
    JOURNAL FREE ACCESS
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    Studies on the continuous pyrolysis process of polystyrene (PS) has been carried out in order to obtain styrene monomer. The apparatus for pyrolysis were the twin screw pyrolyzer which were cosisted of a single screw furnace (PS-feeding screw), a twin screw furnace (pyrolyzer), three cooling towers equipped with reciever for liquid products and a gas meter.
    Yields of styrene monomer were more than 70% at one pass under the best condition but higher molecular products called heavy oil were obtained at about 30% yields and they could be easily pyrolyzed to monomer as well as PS. The influence of pyrolysis condition on monomer yield, for example, rotation rate of twin screw, feed rate of PS, pyrolysis temperature and pitch of twin screw are discussed. It was observed that in the use of 90mm pitch screws a great deal of solid products were produced when reaction temperature was 600°C. and rotation rate of twin screw was 5-13rpm and feed rate of PS was 2.6kg/hr., though in the use of 20mm pitch screws solid products were not obtained under similar condition and even at 500°C.
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  • [title in Japanese]
    [in Japanese]
    1974 Volume 53 Issue 7 Pages 654-663
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_654
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1974 Volume 53 Issue 7 Pages 670-674
    Published: July 20, 1974
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.53.7_670
    JOURNAL FREE ACCESS
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