Yukuo Katayama

A pre-heating vaporization technology of coal-water-slurry for the gasification process

Kosuke Aiuchi, Ryo Moriyama, Shohei Takeda, 北田 俊二 et autres

A pre-heating vaporization technology of coal water slurry, CWS, was developed to increase the efficiency of coal gasification with the reduction of oxygen consumption. A CWS pre-heating experimental unit having a capacity of 2.0 tons-coal/day was manufactured. After the CWS was heated …

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Sensor-controlled heliostat with an equatorial mount

Kosuke Aiuchi, Kazuo YOSHIDA, Masaki Onozaki, Yukuo Katayama et autres

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Upgrading of Low Rank Coal as Coal Water Slurry and its Utilization

Ryo Moriyama, Shohei Takeda, Masaki Onozaki, Yukuo Katayama

In this paper, a new brown coal utilization process, combining the techniques of coal/water slurry (CWS) production and CWS in-line vaporization, was proposed. In the process, brown coal was converted to CWS with high-pressure kneader under mechanical shear stress and moderate heating. …

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Development of new green-fuel production technology by combination of fossil fuel and renewable energy

Yukuo Katayama, Yutaka Tamaura

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Development of Green-Fuel Production Process using Fossil Fuel and Sustainable Energy

Masaki Onozaki, Yukuo Katayama

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Sun Tracking Photo-Sensor for Solar Thermal Concentrating System

Kosuke Aiuchi, Kazuo YOSHIDA, Yukuo Katayama, Minoru Nakamura et autres

This paper presents the structure and application of a sun tracking photo-sensor, which controls the direction of a reflected solar radiation to be constant. The sensor has a very simple structure, in which two photo-cells are placed side by side in the …

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Gasification by Partial Oxidation of Hot Coke Oven Gas Containing Vapor Tar

Hashimoto Takao, Saegusa Hitoshi, Watabe Koji, Masaki Onozaki et autres

Preferential Separation of Low Ash-Content Coal Particles by CO2 Absorption and Liquid Fluidization

Tadatoshi Chiba, Tohru Yamagishi, Hiroshi Moritomi, Yuzo Sanada et autres

Preliminary experiments were carried out in an effort to evaluate the effect of CO2 absorption oR the separation process of coal particles with different ash contents． A mixture of coal particles and water was exposed to CO2 gas under pressures up to …

The trend of industrial use of CWM.

Yukuo Katayama

Since the latter half of 1970's, the developments of new fuels derived from coal have been ivestigated. And till now, many coal slurry fuels were developed. Some of them have been produced commercially.At present, the four countries, Sweden, United States, Canada and …

Studies on Structural Analysis of Aromatic Heavy Ends (Part 2)

Yukuo Katayama, Yuzo Sanada, Kouji OUCHI

芳香族性の極端に低い試料 (たとえば石油の蒸留残油類) の構造解析も芳香族性の高い試料と同程度の高い精度で構造解析が行えうるように, floating parameter を1個増やし5個とした構造解析法を開発した。既報の解析法を用いて芳香族性の低い試料の構造解析を行うと, 実際の構造とは多少異なった解析結果が得られるが13), floating parameter を5個とした本解析法では, 芳香族性の極端に低い試料についても Table 2に示されたように, かなりの精度をもつ解析結果が得られるようになった。計算に必要な分析データは, 既報13)と同じく, 元素分析値 (C, H, N, S), プロトンNMR分析値, 比重および平均分子量の4種である。

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Studies on Structural Analysis of Aromatic Heavy Ends (Part 3)

Yukuo Katayama, Tsutonmu KATO, Yuzo Sanada, Kouji OUCHI

有機溶媒に可溶な芳香族系重質油類の化学構造を解明する手法は数多くあるが, 有機溶媒に不溶な部分の化学構造を解明する手法は, van Krevelen13)～15)の手法があるのみである。そこで著者らは, さきに開発した電子計算機を用いる構造解析法11),12)を母体として, Montgomery10)の屈折率の計算式 (CRC) を改良した分子屈折率に関係した構造関係式を導入することによって有機溶媒に不溶な部分の精密な構造解析が行える解析法を完成した。構造解析計算に必要な分析データは, 元素分析値, 比重, IR分析値, 屈折率か反射率のいずれかの計4種類である。

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Titre indisponible

Yukuo Katayama, Takuji Hosoi, Gen Takeya

D．W． van Krevelen， Coal ， Elsevier， New York， N． Y．， (1961) Chapters XV［ and XxN． 」． K． BrowR， W． R． Ladner， Fuel， 39， 87