巻号一覧
後続誌
68 巻, 4 号
選択された号の論文の12件中1～12を表示しています
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神谷 佳男1989 年 68 巻 4 号 p. 267
発行日: 1989/04/20
公開日: 2010/06/28
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鈴木 利治1989 年 68 巻 4 号 p. 268-280
発行日: 1989/04/20
公開日: 2010/06/28
ジャーナル フリーGlobal climatic warming associated with increased concentrations of `green house' gases, such as CO2, has long been recognized by scientists although not by the general public.
It is time to focus public attention on the warming of the atmosphere due to the green house effect and to discuss it with not only experts but also policy makers and government officials with in congressional hearings and meetings. International organizations are currently conducting meeeting on institutional countermeasures for limitation of CO2 emission. The impacts of these limitations of CO2 emmision on energy economics (energy demand and supply, energy market) have to be assessed using an institutional approach.
The meeting in Tronto in June 1988 appealed to wealthy nations to cut their CO2 emissions by 20% by the year 2005. This study examines these issues by assessing the impacts of the Tronto meeting's appeal. Its principal findings are as follows.
1. CO2 emission level in 2005 in the no-limitation case will be 1. 7 times higher than the goal of the Tronto appeal. CO2 emission levels of OECD countries in 2005 will be 1.5 times higher than the goal of the Tronto appeal; Centrally planned economies will be 1.9 times higher; LDCs will be 2.0 times higher.
2. It is important that Centrally planned economies, especialy China and the LDCs participate in the CO2 emission limitation club.
3. The CO2 emission limitation meeting of Tronto's goal would result in a drastic change in energy mix which would be followed by an unbalance of energy demand and supply, energy price rises and changes in economy growth.
4. The greatest determinant of the level of future CO2 emissions is the degree of future improvement in energy efficiency. But each country has different levels of energy efficiency.
Therefore each country has different potential for future improvement in energy efficiency.抄録全体を表示PDF形式でダウンロード (1913K) -
1989 年 68 巻 4 号 p. 281-289
発行日: 1989/04/20
公開日: 2010/06/28
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岩永 祐治, 高谷 幸司1989 年 68 巻 4 号 p. 290-296
発行日: 1989/04/20
公開日: 2010/06/28
ジャーナル フリーFor the fundamental investigation of degradation behavior of coke in the blast furnace, the experiments for the oxidation of coke with various gases were performed and the effects of kind of coke, particle size and reaction temperature were examined.
A mathematical model was proposed for the analysis of the oxidation behavior of coke. In this model, the effect of structual changes of coke particles by the gasification on theconcentration of carbon and the effective diffusivity was considered. The experimental results well agreed with the calculated ones by the mathematical model.抄録全体を表示PDF形式でダウンロード (794K) -
杉本 義一, 三木 康朗, 丹羽 吉夫, 大場 昌明, 山田 谷正子1989 年 68 巻 4 号 p. 297-304
発行日: 1989/04/20
公開日: 2010/06/28
ジャーナル フリーThe chemical structures of the nonpolar fraction in Wandoan-coal derived heavy oil were investigated by Field-ionization mass spectrometry (FIMS)
The nonpolar fraction of the heavy oil were separated into five compound-type classes by high-performance liquid chromatography (HPLC). The FIMS analyses of those compound-type subfractions indicated that the skeltal structures were polycondensed aromatic rings which had molecular weights represented by 228+50n, 202+50n, 204+50n, 276+50n (n=0, 1, 2, 3, 4). A small amount of n-paraffins was also contained.
Naphthalenes with long alkyl chains, binaphtyls and their hydrogenated compounds were also detected in significant amounts, and they were supposed to be formed by recombination of solvent with alkyl radical and dimerization of solvent, respectively. The occurence of these recombination reaction implyed that a part of polycondensed aromatic rings might be formed during coal liquefaction.抄録全体を表示PDF形式でダウンロード (1001K) -
島田 浩次, 金木 則明, 坂井 宏光, 田中 裕敏, 竹内 隆男, 原 弘1989 年 68 巻 4 号 p. 305-311
発行日: 1989/04/20
公開日: 2010/06/28
ジャーナル フリーEach maceral of Taiheiyo coal was concentrated under a density separation technique and was carbonized under a quick heating in a fluidized bed.
The char prepared from exinite-and vitrinite-rich part of coal has pores with a thick wall, while the char with more minerals, specific gravity of < 1.40, showed an opposite tendency.
The catalyst dispersion state in the catalyzed char was as follows.
The concentration of the catalyst in the mineral-poor char was high on the macropore surface and low in the wall. In the mineral-rich char, the catalyst dispersion was better than the above.
Therefore, the catalytic reactivity of a char with a larger specific gravity is higher than that with a smaller specific gravity.抄録全体を表示PDF形式でダウンロード (1206K) -
片山 隆夫, 橋本 涼一, 二見 英雄1989 年 68 巻 4 号 p. 312-321
発行日: 1989/04/20
公開日: 2010/06/28
ジャーナル フリーWe developed a new method for designing a reforming furnace equipped with reactor tubes in which newly developed catalyst was packed.
The design procedure which applied 'Heat Flux Method', consists of chemical reaction simula-tion and radiant heat transfer simulation in a furnace. These simulations are linked by heat absorption pattern and thermal transfer factor inside the reactor. By this procedure, We can design steam reforming process which has high thermal efficiency and requires less space than conventional one.
Using this procedure, We designed and constructed a commercial steam reforming plant. Through the long term operation, we evaluated availability of the procedure by comparing the measured value with calculated ones. Finally we confirmed that this procedure is very efficient for designing a steam reforming process.抄録全体を表示PDF形式でダウンロード (1027K) -
櫛山 暁, 相沢 玲司, 小林 悟, 肥沼 豊, 上桝 勇, 清水 吉一1989 年 68 巻 4 号 p. 322-327
発行日: 1989/04/20
公開日: 2010/06/28
ジャーナル フリーCatalytic activity of several oil-soluble molybdenum compounds was tested for upgrading low-quality heavy oil by high pressure thermalhydrotreatment.
Reactions were performed by use of an autoclave of 300m1 capacity at temperature 470°C, reaction time 10min., initial hydrogen pressure 100kg/cm2 and stirring rate 1, 500ppm.
Venezuela Morichal crude (S 4.19wt%, N 0.67wt%, V 463ppm, Ni 100ppm, C5-insoluble asphaltenes 17. 5wt%) was used as a feed.
Molybdenumdithiophosphates, which are usually used as lubricant oil additives, were found to show high activity for sulfur and vanadium removal. Their activity was further enhanced by the addition of oil soluble cobalt compounds. The role of P and S in the activity enhancement for Mo catalysts was investigated with a variety of combinations of oil-soluble Mo, Co, P and S compounds. It was revealed that the addition of P compounds is essential for vanadium removal and the coexistence of P and S is effective for the removal both of sulfur and vanadium. Recycle use of the Mo-Co-P-S catalyst, which could be recovered as a solid matter, resulted in a gradual decline of activity. However, even after 3 to 4 recycle uses, its activity was still higher than the initial activity of conventional Co-Mo-Al2O3 catalyst.抄録全体を表示PDF形式でダウンロード (828K) -
レーザーによる燃焼場の計測大沢 敏彦1989 年 68 巻 4 号 p. 328-335
発行日: 1989/04/20
公開日: 2010/06/28
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平佐 興彦1989 年 68 巻 4 号 p. 338
発行日: 1989/04/20
公開日: 2010/06/28
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東亜熱研株式会社1989 年 68 巻 4 号 p. 339
発行日: 1989/04/20
公開日: 2010/06/28
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水野 光一1989 年 68 巻 4 号 p. 340-341
発行日: 1989/04/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (232K)
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