Journal of the Fuel Society of Japan

[title in Japanese]

[in Japanese]

1962 Volume 41 Issue 3 Pages 171
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.171

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Study of the Coal Constitution by Nuclear Magnetic Resonance Method

Yuzo Sanada

1962 Volume 41 Issue 3 Pages 172-186
Published: March 20, 1962
Released on J-STAGE: October 21, 2011

DOIhttps://doi.org/10.3775/jie.41.172

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Measurements of the broad line proton magnetic resonance spectra of coals and model hydrocarbons are used to obtain an indication of types of hydrogen atoms present in them.
Hydrogen distribution data are obtained from the soluble fractions of coal with the high resolution nuclear magnetic resonance spectra.The nuclear magnetic resonance analysis give results in good agreement with the infra-red and x-ray data.
Some imformations about the molecular motion and arrangement in coal are obtained from the temperature dependence of nuclear magnetic resonance absorption line.

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Sumitomo Gasification Plant for Crude Oil

Toshio Taniyama, Shujiro Ishimura, Yoshikazu Karato

1962 Volume 41 Issue 3 Pages 187-198
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.187

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Sumitomo oil gasification plant is one which aims at producing gas for the synthesis of ammonia on the ordinary pressure. Sumitomo Chemical Indnstries Ltd.first attempted the gasification of pulverized coal by the pilot plant and attained a brilliant success. Afterwards based on this technique it has replaced pulverized coal by crude oil.In 1959, 3 sets of 300t/d (expressed as ammonia) plant were installed at Niihama Works.In this paper the authors considered the optimum condition of the reaction of crude oil gasification and introducing the outline of the gasifiation process they gave description of improvements and devices of gas generator, waste heat boiler, gas scrubber, safety apparatus and so forth together with the operation results of the plant.

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Studies on the Incomplete Combustiomf Methane for Acetylene Synthesis(II)

Comparison of the Experimental Results with the Theoretical Gas Composition in Equlibrium

Eili Otsuka, Haruo Negoro

1962 Volume 41 Issue 3 Pages 199-203
Published: March 20, 1962
Released on J-STAGE: February 23, 2011

DOIhttps://doi.org/10.3775/jie.41.199

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In the reaction between one mole of methane and O.6 mole of oxygen preheated equally to 600 °C., the theoretical equilibrium composition was calculated on the bumergas.Comparing the values with that of experimental results obtained by us and that of which apPeared in the literatures concerning the acetylene fo rmation from metharne, the distinct diHerences of the composidon were obserbed amongthem.With referenceto the calculations of the leaction rates based on the partial pressure of each componentand the theoretical ame temperature, we made severral qualitative discussions for eachreaction which was expected to take a part in the incomplete combustio of methne.

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Studies on the Incomplete Combustion of Methane for Acetylene Synthesis(III)

Discussion on the Combustion Mechanism

Eiji Otsuka, Haruo Negoro

1962 Volume 41 Issue 3 Pages 204-208
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.204

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Analysing the experimental results reported in the first paper of this series, we proposed a mechanism on which the incomplete combustion between methane and oxygen occurs.The almost equivalant moles of methane and oxygen react, at first, forming water, hydrogen, carbon monoxide and carbon dioxide.This reaction proceeds very rapidly and the ratio of the reacted oxygen reaches to almost 100% and a same equilibrium as attained in water gas reaction is brought about among these four com- ponents formed in the reaction.As this first step of reaction being remarkably exothermic, in the second step the unreacted methane is decomposed by the heat of the first reaction probably into radicals, which are easily converted to acetylene.
Based on this mechanism, we made some considerations on the combustion mechanisms hitherto proposed by other authers, and as a result of them we have pointed out that so me conclusions made by them should be revised.Also, reliable explanations could be given on the difference between the experimental results and the theoretical composition in equilibrium.

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Chemical Studies on the Sulfur of Japanese Coals(I)

Introduction and Ditribution of Sulfur Compounds in Coal

Yoshiaki Miura

1962 Volume 41 Issue 3 Pages 209-223
Published: March 20, 1962
Released on J-STAGE: February 23, 2011

DOIhttps://doi.org/10.3775/jie.41.209

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The solution of fundamental problems on coal sulfur is very important from a view point of coal utilization.In this study, the results of research on the forms and desulfurization of sulfur compounds in Japanese coal (mainly, bituminous coal for metallurgical use) will be reported deviding into six parts.Firstly, the summurized literature survey for the forms and carbonization properties of sulfur compounds in coa is described in the present paper.Next, the method for estimation and distribution of sulfur compounds contained in Japanese coal are investigated, comparing with foreign coals.And the following results were obtained.
(1) Regarding the method for estimation of the forms of sulfur compounds in Japanes-e coal, it was found out that the time required for estimation could be fairly reduced comparing with the case of using the Powell's oxidation method, when the reduction method by Radmacher et al hitherto customarily used for foreign coals was applied to the estimation of pyritic sulfur in Japanese coal.
(2) Organic sulfur contents amounted to 80 % of the total sulfur, and the more the total sulfur was contained the more, the organic sulfur.
(3) It was observed that there was the definite relation between organic sulfur conte-nts and coal rank.The ranks at which the maxima of the mean curves showing the distribution of organic sulfur contents are obtained, were 84 % and 86 % for carbon, 5 % and 4 % for hydrogen, and about 40 % and 20-30 % for volatile matter, for Japanese and foreign coals res pectively.As to these values, Japanese coals ranked at a little lower in coalification series than foreign coals, and this tendency was recognized more clearly with samples that were concentrated by petrographic components.
(4) Kreulen's opinion concerning the origin of coal sulfur, that is, oxygen is displ-aced by sulfur during coalification in the case of high sulfur coal, was found to be appli-cable to the low sulfur coal.
(5) Regarding the distribution of sulfur compounds in samples concentrated by petr-ographic components, the more the inertinite was contained the less the organic sulfur.

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System of Town Gas Combustion and Behavior of the Air Contained in Fuel Gases

Jiro Inoue

1962 Volume 41 Issue 3 Pages 224-227
Published: March 20, 1962
Released on J-STAGE: February 23, 2011

DOIhttps://doi.org/10.3775/jie.41.224

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heoretical system of town gas combustion can be written by the relatio-ns among the combustibility of fuel gas, the burning ability of the gas appliance, and the pressure of the supplied gas.Four indices for combustion and pipe line analysis reported already, are calculated for this purpose.The important problem of the behavior of the air contained in fuel gas is analized by the standardization indices which are_derived from the combustion indices.

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[title in Japanese]

[in Japanese], [in Japanese]

1962 Volume 41 Issue 3 Pages 228-231
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.228

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 232a
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.232a

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 232b
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.232b

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 232c-233
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.232c

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 233
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.233

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 233a-234
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.233a

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 234-235
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.234

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 235-236
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.235

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 236-237
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.236

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[title in Japanese]

1962 Volume 41 Issue 3 Pages 237-248
Published: March 20, 1962
Released on J-STAGE: June 28, 2010

DOIhttps://doi.org/10.3775/jie.41.237

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