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Successor
Volume 50, Issue 2
Displaying 1-7 of 7 articles from this issue
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[in Japanese]1971 Volume 50 Issue 2 Pages 59
Published: February 20, 1971
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (267K) -
Takashi Handa, Hiroaki Suzuki, Atsushi Takahashi1971 Volume 50 Issue 2 Pages 60-75
Published: February 20, 1971
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSRecent developments in petrochemical and automobil industries have stimulated the use of many new plastic materials in building constraction and the increase in the stocks of fuels in and around cities. Increasing population in and around cities as the result of the prosperity in the expanding economies and industrial activities have stimulated the constraction of many tall buildings and apartments and under-ground marketing centres, which have changed used-to-be fire patterns particularly concerning smokes. Heavy traffics in down-town areas caused by the over-crowding cars will be expected to be a cause of the serious fire-sources by the sudden big earthquake and to prevent the evacuation of citizens. Consequently, the rechecks on the fire-hazardness of those materials in tall buildings and cities relating the city-constraction plan and the change in the fire-patterns will be the serious problems for the civil-safety. Therefore, in the present paper the fire-hazardness of organic building-materials and fuel-stocks in cities will be referred to as a criterion of fire-source and the characterization of fire-patterns in the above liquidous and solid fire-hazard materials will be surveyed for the criterion on the fire-modeling of big-fires in buildings and cities.
Finally, the necessity in the development of the studies on control-technique of fire between elements and systems will be emphasized for the earlier prevention of big fire based on the above fire-pattern modelings to exclude the excess fear and limitation in the use of plastic materials and fuel-stocks necessary for the modern civil livings.View full abstractDownload PDF (2445K) -
Tetsuo Umeda1971 Volume 50 Issue 2 Pages 76-77
Published: February 20, 1971
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe production and use of natural gas in Formosa together with the present state and the prospect of its development were mentioned concretely, and the the country's natural gas situations veiled so far were made .View full abstractDownload PDF (357K) -
Eiji Munekata1971 Volume 50 Issue 2 Pages 78-80
Published: February 20, 1971
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIt was about 30 years ago when I invented a new process to obtain phenols, or oxygen compounds, from man-made petroleum (made by coal hydrogenation) containing phenols by super heated water extraction. I obtained a Japanese patent on this invention and made it known to the public. Observing the similarity between the nature of oxygen and that of sulfur in their respective compounds, I took aim at the possibility of desulfurizing petroleum by super heated water extraction. I, then, arranged preliminary experiments. In an autoclave at 300°C, 40‰ desulfurization of heavy oil was proved ex-perimentally.
Based on my old experience, I had once expected that I would obtain even a higher efficiency for this desulfurization if I would use a counter-current extraction system. I made experiments with a simple made-shift apparatus. However, due to a deficient feeding device of counter-current the experiment did not effect expected results, the efficiency of which was only 30‰ desulfurization of light oil (vacuum distilled) at 230°C.
Though the experiment did not end up to my satisfaction, I obtained from it con-ditions necessary for the industrialization of desulfurization of mineral oils. I am also convinced now, that the desulfurization of mineral oils will be easily realized by means of super heated water extraction, if I had necessary apparatus with perfect feedding system of counter-current. Furthermore, I am also certain that a new field will be developed where organosulfur compounds obtained by said extraction method will find various useful applications.View full abstractDownload PDF (552K) -
Mitsuo Makino, Yoshio Kawana1971 Volume 50 Issue 2 Pages 81-87
Published: February 20, 1971
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThis paper, deallng with the acetylene formation from n-pentame, n-hexane, n-heptane, cyclohexane, gasoline, kerosene amd gas oil, refers to the infiuences of the injection angle of the hydrocarbons on the formation of acetylene. The results obtaimed are summarized as following:
(1) Acetylene yields were increased in the case that the in lection angle of the samples against the plasma jet was changed from 90°to about 45°in the direction of the cathode of the plasma torch, Its maximum yield, however, was 103g/kWhr with cyclo-hexane and /or 99g/kWhr with gas oil.
(2) As for hydrocarbons of comparatively high boiling points such as petroleum, distlllates, preheating was not sufficient, and (consequemtly) gasfication of the samples was incomplete, Which induced the poor mixing of the sample and the plasma jet.View full abstractDownload PDF (971K) -
J. M. Coffer, L. F. Schiemann1971 Volume 50 Issue 2 Pages 88-105
Published: February 20, 1971
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSughout the world concern over pollution is mounting. In many industrial countries the automobile or more specifically the internal combustion engine has been singled out as a major contributor to atmospheric pollution problems. As a result legislative bodies have acted to impose limits on pollutants emitted from gasoline powered vehicles. The purpose of this discussion is to review these automotive emissions regulations; the changes required in engines and fuels in order to meet emissions codes;and the impact of reduced automotive emissions on the air pollution problem. Much of the material presented relates to developments in the United States . However air quality is not confied by national boundaries. Therefore we believe the information presented will be of interest to those in Japan who are involved either directly or indirectly with automotive air pollution control.View full abstractDownload PDF (3046K) -
1971 Volume 50 Issue 2 Pages 111-116
Published: February 20, 1971
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (846K)
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