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58 巻, 12 号
選択された号の論文の7件中1～7を表示しています
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吉田 尚, 末次 良雄1979 年 58 巻 12 号 p. 999-1014
発行日: 1979/12/20
公開日: 2010/06/28
ジャーナル フリーThis paper comprises the draft of a lecture made before a scientific lecture meeting of the No.116 Committee of the Japan Society for the Promotion of Science.
Many reports have been made on the liquefaction of coal.
We especially discussed the history of the study of coal liquefaction, energy resources of the world, energy policies of Japan and other countries, techniques for utilizing coal in various forms, and the outline of and trends in some typical coal liquefaction processes.
With the exhaustion of fossil fuels, especially petroleum, staring us in the face (e. g., the USA is warning of the 1985 crisis), we emphasized the need to make as much effective use as possible of coal not only as an energy source but also as an organic chemical industry material.抄録全体を表示PDF形式でダウンロード (2118K) -
微粒化の機構および特性千葉 近1979 年 58 巻 12 号 p. 1015-1021
発行日: 1979/12/20
公開日: 2010/06/28
ジャーナル フリーOn the atomisation of liquid by sonic vibration (f=10 kHz), the main results are follows.
(1) The main cause of atomisation is a capillary wave mechanism.
(2) The relation between the maximum droplet diameter dmax and the mean droplet diameter d is dmax= (1.5-2.2) d and this is somewhat favourable than the other atomisation methods.
(3) d converges to the constant value without regard to the flow rate in the case of critical amplitude. The experimental equation was shown.
(4) The semi-experimental equation concerned with d and f was obtained from combining d with wave length λ by R. J. Lang's method.
(5) The favourable equation of droplet size distribution was shown.
(6) The atomisation by vibration (widely, f=10 kHz-2 MHz) was summarized and the prominent guide for practical application was shown.抄録全体を表示PDF形式でダウンロード (1495K) -
玉置 喜平次, 中野 寛文, 吉田 浩, 金安 正隆1979 年 58 巻 12 号 p. 1022-1031
発行日: 1979/12/20
公開日: 2010/06/28
ジャーナル フリーA study on nitrous mono oxide (NO) absorption into sodium cobalt phthalocyanine sulfonate (C0PCS) solution was carried out.
The C0PCS solution absorbs NO and desorbs it easily on heating to have the absorption capacity restored, which makes the repeated cycle of absorption-desorption possible.
The NO absorption rate with the C0PCS solution is far faster than that with the solid cobalt phthalocyanine reported by Ercolani et al., The rate is higher in the solution of organic solvents such as methyl-f ormamide, N-methye 2-pyrrolidone or dimethyl-sulf oxide compared with that in the aqueous solution.
The coordination ratio of a NO molecule to a C0PCS molecule is estimated to be one to one in the organic solvents of high absorption capacity.
Regarding other gaseous constituents that are supposedly contained in exhaust gas together with NO, none of oxygen, carbon monooxide and dioxide inhibits the NO absorption into the solution. However even a trace amount of SO2 inhibits the NO absorption into the aqueous solution of C0PCS. On the other hand SO2 does not exhibit any inhibition with the DMSO solution.
The effects of absorption conditions such as pH and temperature of absorbent, C0PCS concentration and NO concentration were also investigated in the aqueous solution of C0PCS.抄録全体を表示PDF形式でダウンロード (1157K) -
荒木 道郎, 高谷 晴生, 小川 清, 細矢 忠資, 鈴木 邦夫, 藤堂 尚之1979 年 58 巻 12 号 p. 1032-1036
発行日: 1979/12/20
公開日: 2010/06/28
ジャーナル フリーIn the presence of hydrogen sulfide, the methanation activity and active species of tungsten catalysts were studied under the conditions of 650°C, 70 kg/cm2 and SV=15, 000 hr-1.
Metallic tungsten scarcely showed catalytic activity at temperatures of 400 to 500°C. However, when the reaction was carried out at the higher temperature of 650°C, metallic tungsten was gradually converted into two kinds of tungsten carbides during the reaction by the action of reactant gases, and consequently the activity for the formation of methane was increased. The resulted tungsten carbides exhibited stable activity, even in the presence of 160ppm of hydrogen sulfide, for longer than 400 hrs without any coking troubles. An X-ray study of the catalyst used for longer than 400 hrs showed that it consisted of carbide (WC) and tungsten a small amount of tungsten disulfide (WS2).抄録全体を表示PDF形式でダウンロード (696K) -
烏羽 安三, 荻須 吉洋1979 年 58 巻 12 号 p. 1037-1040
発行日: 1979/12/20
公開日: 2010/06/28
ジャーナル フリーTwo stage combustion method for the reduction of NOx formation in fluidized-bed coal combustion was experimentally studied. Three coals were used in the experiments. The NOx reduction rate by two stage combustion method is different by the coal used in the experiments. It was found that difference of volatile matter of both coal itself and nitrogen compounds contained in it between each coal has strong relation with differerence of NOx reduction rate by two stage combustion.抄録全体を表示PDF形式でダウンロード (503K) -
O/WとW/O形エマルジョンの燃焼性の比較岩間 彬, 青柳 鐘一郎, 井上 友一郎, 岩田 元彦1979 年 58 巻 12 号 p. 1041-1054
発行日: 1979/12/20
公開日: 2010/06/28
ジャーナル フリーHigh pressure thermal analysis, microscope observation of emulsion transformation and phase transition during heating, and single droplet burning experiment have been carried out, in order to obtain essential data to compare the applicability of oil-in-water (O/W) with that of water-in-oil (W/O) emulsified kerosene and fuel oil, particularly focussing on the action of the secondary micro-atomization. Non-ionic surface active agents were used to produce stable emulsified fuels. It is shown that W/O emulsified A and B fuel oils promise superior combustion characteristics to 0/W emulsified ones, because the earlier occurrence and longer duration of intense micro-atomization make the total burning life substantially shorter. With respect to kerosene, however, O/W emulsion manifests more efficient burning characteristics than W/O emulsion. Data of thermal analysis suggest that the secondary micro-atomization would be enfeebled with the increase of atmospheric pressure and this is in accord with the trend of the observed result for single droplet burning in diesel environment. A combustion model for both O/W and W/O emulsified fuels is presented抄録全体を表示PDF形式でダウンロード (3592K) -
第3成分の添加と触媒活性鹿田 勉, 延里 尚志, 藤元 薫, 功刀 泰碩, 冨永 博夫1979 年 58 巻 12 号 p. 1055-1061
発行日: 1979/12/20
公開日: 2010/06/28
ジャーナル フリーA series of catalysts f or reduction of nitric oxide by ammonia were prepared by supporting vanadium oxide on silica and modified by several metal oxides. A highly active catalyst was consisted of vanadium oxide-titanium oxide-silica prepared by the f ollowing procedure,
Titanic sulfate sol.↓
Silica gel (Davison ID) → Impregnation → Evaporation
Ammonia water ↓
→ Neutralization→Washing→Drying (120°C, 24 hr)
Vanadyl oxalate sol.↓
→Impregnation→Drying (120°C, 24 hr) →Calcination (350°C, 3 hr, in air)
In the neutralization, titanic sulfate changed to titanium hydroxide in the pore of silica. Under a set of reaction conditions, percent NO removal over this catalyst increased by the rise in reaction temperature, 80.0% (180°C), 94.7% (200°C), 100% (250°C), 100% (300°C), 100% (350°C), Although the content of V2O5 was as low as 5% by weight, the activity of the catalyst was markedly high in comparison with that of vanadium oxide-silica catalyst. Calcination temperature of the catalyst had little effect on the activity. It was suggested that titanium oxide precoated on silica reduced substantially the adverse effect of the silica surface.抄録全体を表示PDF形式でダウンロード (900K)
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