Journal of the Fuel Society of Japan

[title in Japanese]

[in Japanese]

1958 Volume 37 Issue 10 Pages 567
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.567

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Classification of Reservoir of Natural Gas

Kazuyoshi Ida

1958 Volume 37 Issue 10 Pages 568-572
Published: October 20, 1958
Released on J-STAGE: October 21, 2011

DOIhttps://doi.org/10.3775/jie.37.568

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The essential elements of classification for mode of gas-reserve are ages, . situations, shapes of reservoirs and chemical or physical properties of fluids.
1) Geological age may be fundamentally useful for this object.
2) Natural gas may be accumulated in the high position of some geological structure that: is recognized as usual trap.But the most modes of accumulation in Japan do not be-long to this type. Some pool of commercial importance is in low position of structure.
3) Physical characters of fluids are important to indicate the property of reservoirs. Natu-ral gas exists in reservoirs as liquid phase, gas phase or mixed phase of above two.
4) Soaking-type-gas in the younger deposits is confronted with enclosed-type-gas in the-older sediments.
5) Fluids in reservoirs have many chemical components. Among them two divisions, high and low clorinities, are profitable for practical classification.

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Carbonisation and Gasification

Akira Shimomura

1958 Volume 37 Issue 10 Pages 573-578
Published: October 20, 1958
Released on J-STAGE: October 21, 2011

DOIhttps://doi.org/10.3775/jie.37.573

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Coking industry and gas industry, although they were both based on coal carbonisation, had naturally different starting and develoment as their respective objects were different. However, these two industries have gradually merged almost into one with respect to utilization of the surplus coke-oven gas in iron works. Recently another big industry-synthesis gas industry-approached them, and it is anticipated that these three industries, all of which produce and utilize gas, will be amalgamated into one and form a part of the general chemical industry.
Due to dwindling of good coking coal, especially in Japan, the importance of utilization of non-and weakly caking coals, which are termed “non-carbonising coals”. For employment of such coals carbonisation of briquetted char (for coke making) and carbonisation and gasification of fion coal by fluidization (for gas and char making) are desecribed.

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Production of Synthetic Gas from the JobMan Coal and Natural Gas

Shigeru Terada

1958 Volume 37 Issue 10 Pages 579-581
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.579

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It was already reported that the capacity of the Koppers-Totzek coal dust gasification plant amounted to 150% of the nominal capacity. About 10, 000m3/hr (per 10m3 of volume of one furnace) of synthetic gas (as CO+H2) is now produced against the older value of 3, 000m3/hr by the alteration of brick walls and gas burners, stopping the use of steam for gasification, promotion of safety in operation and introducing natural gas together with coal

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Studies on the Oxidative Degradation of Coal(I)

Sigeru Kajiyama, Chikao Yokokawa, Yoshihisa Watabe, Yoshinobu Takegami

1958 Volume 37 Issue 10 Pages 582-591
Published: October 20, 1958
Released on J-STAGE: October 21, 2011

DOIhttps://doi.org/10.3775/jie.37.582

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Samples of various rank coal and the extraction products of Onoura bituminous coal were oxidized by boiling with 1N-HNO3, and carbon distribution in the oxidation products and the properties of humic acids obtained were studied. In cases of lower-rank coal, maximum point of yields was observed in yield-time curve. This maximum point was observed in shorter oxidation time. In cases of higher-rank coal, however, increase of oxidation time resulted in increase of humic acid yield, reaching to a constant value. No maximum point as was observed in the low-rank coal was observed. The humic acids obtained from higher-rank coal showed higher carbon content, lower H/C atomic ratio, and lower equivalent weight, than these corresponding values obtained in the cases of lower-rank coal.
These facts indicate that the fundamental structures (the parts of coal transferred to humic acids) of the lower-rank coal are smaller and less condensed, and that binding parts of the fundamental structures are larger than those of the higher-rank coal respectively. Results of oxidation of the extraction products of Onoura bituminous coal, lead to that the solid bitumen and the residual coal gave the humic acids of the similar structure, however, the oil bitumen gave different kinds of humic acids.

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

1958 Volume 37 Issue 10 Pages 592-595
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.592

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Mild Oxidation of Miike Coal with Air(III)

The Variation of Coking-property by the Fluid Oxidation Method

Tadashi Nakagome, Susumu Yoshida, Hidehiko Sugimura

1958 Volume 37 Issue 10 Pages 596-600
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.596

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There have been lots of studies so far on the oxidation of the surface of coal through the low-temperature heat treatment (lower than 400°C). Only a few research workers, however, are known to have published reports on the examined results of the mild oxidation with fluid method, for most of the existing processes of such oxidation are those which employ retort method or rotary kiln method. The reporters experimentally treated Miike Coal with heat between 190° and 430°C employing fluid method, and examined minutely the variation of its properties, especially its coking-property, as the temperature changed. Hitherto it has been a generally accepted idea that, in the case of perplastic coal such as Miike Coal, the cokingproperty is improved by the mild oxidation method. But as a matter of fact the effects of the mild oxidation on the coking-property are far from simple, so that it will be too much hasty to conclude that it is “improved” by such processes. From the results of their study, the reoprters infer that the low-temperature dry distillation is able to produce a better result on the transformation of superior coking coals than The mild oxidation.

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[title in Japanese]

1958 Volume 37 Issue 10 Pages 601
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.601

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[title in Japanese]

1958 Volume 37 Issue 10 Pages 601a-602
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.601a

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[title in Japanese]

1958 Volume 37 Issue 10 Pages 602-603
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.602

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[title in Japanese]

1958 Volume 37 Issue 10 Pages 603-605
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.603

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[title in Japanese]

1958 Volume 37 Issue 10 Pages 605-608
Published: October 20, 1958
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.37.605

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