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Successor
Volume 43, Issue 1
Displaying 1-11 of 11 articles from this issue
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[in Japanese]1964 Volume 43 Issue 1 Pages 1
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
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[in Japanese]1964 Volume 43 Issue 1 Pages 2
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
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[in Japanese]1964 Volume 43 Issue 1 Pages 3-5
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
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[in Japanese]1964 Volume 43 Issue 1 Pages 5
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (139K) -
Masao Hama1964 Volume 43 Issue 1 Pages 6-20
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSNorth Kyushu had become one of the heavy industrial areas in Japan due to the concentrated development of the Chikuho coal fields and also to the establis-hment of nationally sponsored Yahata Iron Works. After World War II, however, its economical position has become towered owing to the advance of the so-called, energy revlution as well as the world-wide adoption of numerous technical renovations . The author first describes the histrical background and ahe outstanding features of development of this area. He then analyses the important factors affecting the economical stagnancy of the area, and finally proposed plans to redevelop the district, such as pro-motion of the coal production, improvement of the industrial constitution of the area, and rearrangemant of the industrial basis with regard to the sites, service water, rail-roads, highways, bays, ha rbours etc.View full abstractDownload PDF (2066K) -
Yoshinobu Takegami1964 Volume 43 Issue 1 Pages 21-33
Published: January 20, 1964
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSIn order to find out new ways of chemical utilization of coal, it is important to investigate thoroughly its essence. Many studies have so far been done on the structure of coal, however, there still remain many unsolved questions such as the size of structural unit, its chemical structure, and the construction of coal molecule from the unit.
The author made clear the chemical structure of regenerated humic acid obtained from the nitric oxidation of coal. He then showed with the model that humic acid, whose primary structural unit is considered C25H24O1.2, is made by means of the ether-linkage of the unit. Its molecular weight is about several thousands. He also made clear that the coal molecule has heterogeneous stucture consisting of two different struc-tural parts: the aromatic part forming skeleton of humic acid, and the hydro-aromatic part which combines its stuctural unit.View full abstractDownload PDF (1917K) -
Kiichiro Watanabe1964 Volume 43 Issue 1 Pages 34-44
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIt has elapsed about thirty years since the inauguration of power generation using low-grade coal in Japan.In this duration, many improvements both in boiler and combustion techniques have been achieved through the resolution of the problem encountered.From the aspect of combustion, Johan and Ube Oha coals are most suitable followed by the low-grade coal of Kyushu district for the present purpose.On the other hand, Ube anthracite of high ash content induces an increase of unburned carbon in the cinder.The problem in the operation of the plant is rather the troubles in the handling of high-moisture coal than the fluctuation of heat value of coal.Recently, the use of vapor of high temperature and high pressure is dominant in the power generation including the power station using low-grade coal.The change of the design of plant, as the result, in which the velocity of gas is increased as far as possible in order to increase the heat transfer coefficient and to decrease the heat area, induces a new problem of erosion of heat tube by fly-ash in gas. The increase of dust collecting efficiency, at the same time, is required from the viewpoint of the abatement of air pollution. However, when the coal of high ash content is used the improvement of dust collecting efficiency, for instance from 97% to 98%, is by far difficult than the elevation of heat efficiency by 1%.Furthermore, the fact that the cost for model change of the plant will be expensive provides another problem.View full abstractDownload PDF (1633K) -
Tamotsu Watanabe1964 Volume 43 Issue 1 Pages 45-61
Published: January 20, 1964
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSIn view of the past energy situation in Europe and America such as transitions of energy increase, structure of consumption and demand by divisional consumption regarding the gradual increase in pepulation as well as national total produ-ction, future energy demand, reserves of various energies together with their possible supply are investigated, and the future prospect of Japan's coal industry is discussed.
The proportion of the present energy supply.in the world is 45% of coal, 34% of petroleum, 15% of natural gas and 6% of hydroelectricity.In the near future, petroleum supply will be increasing constantly, however, it will not be possible to suffice the world demand several decades later.Nevertheless, according to the plan of energy demand and supply in our country, it indicates the dependence of over 60% on the energy import after several years.Under such conditions it is inevitable to induce confusion at the lack of petroleum supply. Coal producers and statesmen should establish a far-sighted program for the national energy.View full abstractDownload PDF (2687K) -
Kunio Hamada1964 Volume 43 Issue 1 Pages 62-74
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe work of preliminary experiment on gas drainage at Oshima Colliery appeared in 1953, for the first time.After further experiments and fundamental survey, one of the most ideal system of gas drainage from virgin coal bearing seam was established in 1958.The application of the system contributed much to the increase of safety and of productivity, and thus, to the overall rationalization of underground and brougth the reduction of cost.
The gas drained was used in boilors or gasfurnaces, just after the gas drainage was started. Later, since 1961, the gas has been supplied to a gas turbine generator of 6, 000kW in capacity. Output of the generator fills now about 90% of the total electric power consumption of the Oshima Colliery.
In this paper, the general outline of the Oshima Colliery will be described, first of all, and then the sole reason that has brought the establishment of the gas drainage in the Colliery results of the gas survey, detailed explanation of the system of gas drainage and utilization of the drained gas, will be described respectively.View full abstractDownload PDF (2035K) -
Participating in the 6th World Petroleum CongressTozo Amemiya1964 Volume 43 Issue 1 Pages 75-81
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe author attended the 6th World Petroleum Congress held in Frankfurt during June 19-26, 1963.This paper describes some interesting topics given at the Congress, e.g., (1) oil men have very optimistic opinion as to the future of world petroleum resources; (2) hydro-treating techniques in the petroleum industry are advancing towards the hydrodesulfurization of heavier fraction and the hydrocracking aiming at the manufacture of both petroleum products and petrochemical raw materials;and (3) deve-lopment stndies for the new and unusual uses of petroleum are being actively conducted, such as preparation of protein and vitamin from petroleum by use of micro-organisms.View full abstractDownload PDF (1204K) -
1964 Volume 43 Issue 1 Pages 82-86
Published: January 20, 1964
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (494K)
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