巻号一覧
後続誌
69 巻, 3 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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平野 敏右1990 年 69 巻 3 号 p. 151
発行日: 1990/03/20
公開日: 2010/06/28
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古屋 富明1990 年 69 巻 3 号 p. 152-158
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーThis paper describes concept and current status of development of catalytic combustion for NOx (nitrogen oxides) abatement. Catalytic combustion is an alternative technology, currently under development, which has been offering the potential of meeting SCR (Selective Catalytic Reduction of NOx) emission level and cost reduction. A conventional combustion process produces a peak temperature which is far into the thermal NOx formation region. In contrast, a catalytic combustion process maintains a peak temperature well below the NOx formation region without compromising combustion efficiency.
Two types of the catalytic combustion concept have been proposed. One employs both homogeneous (gas phase) reaction and heterogeneous (catalyst surface) reaction to accomplish complete combustion within a honeycomb catalyst bed. It suggests that the catalyst temperature reaches the adiabatic temperature of fuelair mixtures and that the catalyst shoud withstand above 1300°C. The other employs only heterogeneous reaction, within a honeycomb catalyst bed, to reduce maximum catalyst temperature. And, complete combustion takes place in a post catalyst bed without a catalyst. The maximum catalyst temperature is maintained around 1000°C.
Based on these concepts, several development programs for gas turbine applications have been conducted in USA and Japan. They demonstrated very low NOx emission performance (lower than 10ppmv). Despite the low NOx capability of catalytic combustion, further development efforts are needed in catalyst material, combustor design and control system.抄録全体を表示PDF形式でダウンロード (909K) -
岩本 正和1990 年 69 巻 3 号 p. 159-164
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーConsiderable amount of harmful nitrogen monoxide (NO) is exhausted from vehicle engines and industrial voilers. It is suggested in this article that a catalytic decomposition process be used for NO removal. The present states and problems of catalytic decomposition processes are outlined and then the catalytic performance of copper ion-exchanged zeolites for the decomposition is summarized. A reaction mechanism is also suggested on the basis of spectroscopic data and kinetic results.抄録全体を表示PDF形式でダウンロード (750K) -
青木 慎治1990 年 69 巻 3 号 p. 165-171
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーA new flue gas treatment process (EBA process) using an electron beam will be discussed. This EBA process is attracting worldwide attention as a new effective measure for solving acid rain problems and jointly developed by Ebara Corporation and the Japan Atomic Energy Research Institute. This process has many advantages: a) a dry process capable of removing high level SOx and NOx simultaneously, b) a process simple and easy to operate, c) production of agricultural fertilizers as salable byproducts, and d) minimal installation space. Test results from the demonstration plant (max. gas flow rate of 24, 000m3N/h) which was erected in a coal-fired power station in Indianapolis, Indiana, U.S.A. will be presented.抄録全体を表示PDF形式でダウンロード (1623K) -
瀬古 俊之1990 年 69 巻 3 号 p. 172-179
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーThis paper describes the current status of research and development of methanol engine with low NOx emissions. The use of methanol fuels on diesel engines is expected as one of the measures for reducing NOx emissions, and studies for developing methanol engine that is practical for actual vehicles have been conducted actively in various countries.
NOx emissions of methanol engine depend upon the method of methanol combustion. Some methanol engines achieved low NOx emission characteristics because of the good methods of methanol combustion. Methanol engines have disadvantages like poor fuel economy at low load and low durability of engine components. But it is found that EGR (Exhaust Gas Recirculation) is effective for raising the engine performance and improving NOx emission characteristics. The durability and reliability of engine components may be improved through the fleet test of methanol vehicles.抄録全体を表示PDF形式でダウンロード (811K) -
鉱物質組成吉田 諒一, 成田 英夫, 伊藤 三郎, 長谷川 義久, 前河 涌典, 綱島 群1990 年 69 巻 3 号 p. 180-190
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーReaction characteristics for liquefaction of Japanese and foreign coals are being studied as part of the program of coal liquefaction at the Government Industrial Development Laboratory, Hokkaido. In this study, samples of mineral matter from various coals prepared by a low-temperature ashing technique (LTA) and by a high-temperature ashing technique (HTA) were examined by inductively-coupled plasma emission spectroscopy (ICP), X-ray fluorescence (XRF) and X-ray diffraction in order to obtain fundamental information to clarify the effects of inherent mineral matter on coal liquefaction.
The contents of ashes prepared by a low-temperature ashing technique (LTA) and by a high-temperature ashing technique (HTA) range from ca.2wt% to ca.27wt%. The LTA content is higher than the HTA content in most cases due to dehydration and dehydroxylation of clay minerals, decomposition of carbonate minerals, and dehydration of sulfate minerals by high-temperature treatment.
According to the results of ICP analysis, the main components of mineral matter in coal are Si, Ti, Al, Ca, Na, K, Fe and Mg, and the minor components (0.01-0.20wt%) are Mn, Zn, V, Cr, Ni, Cu, and Be. Australian Yallourn lignite is rich in Fe and Mg, and poor in Si and Al. Canadian sub-bituminous coals (Egg Lake and Wabamum) and Chinese Shori lignite and sub-bituminous coals (Koken and Karinga) are rich in Ca. American Kaiser #3 bituminous coal is rich in Fe, Mn, Cu and Be, and Colombian Titiribi bituminous coal is rich in Ca, Fe and Cu. Australian sub-bituminous coals (Wandoan and Liddell) and Japanese sub-bituminous coal (Taiheiyo) and bituminous coal (Shin-Yubari) have a comparatively similar elemental composition.
According to the results of X-ray diffraction, the LTA contains quartz, kaolinite, illite, calcite, dolomite, pyrite etc. The HTA contains less identifiable components, namely, quartz, metakaolin, anhydrite, bassanite, hexahydrite etc.抄録全体を表示PDF形式でダウンロード (885K) -
シミュレーションモデルによるガス化反応性の評価林 石英, 亀山 修二, 二宮 善彦, 平戸 瑞穂1990 年 69 巻 3 号 p. 191-199
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーThe effect of gasification reactivity for four different coals was studied in a laboratoryscale entrained flow gasifier at atmospheric pressure. The gasifier was simulated by simultaneously solving the mass, momentum and energy balances for the solid and gas phases.
The observed coal conversion was in the range of 66.6 to 88.4wt%. The gas composition leaving the gasifier and the final coal conversion depended on the oxygen to coal ratio and the coal rank.
Good agreement was obtainned between the experimental data and simulation results.抄録全体を表示PDF形式でダウンロード (1577K) -
佐藤 利夫, 葭村 雄二, 島田 広道, 松林 信行, 西嶋 昭生, 桂 直己, 阿部 正彦, 荻野 圭三1990 年 69 巻 3 号 p. 200-206
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーCatalytic function of molybdenum catalysts were evaluated using model test reactions. 1-methylnaphthalene, diphenylmethane and dibenzothiophene were selected as model compounds for evaluating hydrogenation activity of aromatic rings, hydrocracking activity of C-C bonds and hydrodesulfurization activity, respectively.
These model test reactions performed under a high pressure of H2 clearly showed differences in catalytic functions of the molybdenum catalysts, while each catalytic function was not clarified after hydrotreating of heavy oils. These results indicates that the model test reactions are invaluable for evaluating the catalyst functions.
The deactivation behavior of each catalytic functions of the catalysts used for hydrotreating heavy oil was easly delected using the model test reactions, while heavy oil hydroprocessing gave less information for catalyst deactivation, indicating that the model test reactions are more sensitive for understanding catalyst deactivations.
From these results it is considerable that proper model test reactions are effective not only for evaluating the catalyst functions, and the catalyst deactivation but also for designing new types of molybdenum catalysts.抄録全体を表示PDF形式でダウンロード (791K) -
科学技術情報データベースの現状とその活用神田 利彦1990 年 69 巻 3 号 p. 207-217
発行日: 1990/03/20
公開日: 2010/06/28
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技術研究所1990 年 69 巻 3 号 p. 220
発行日: 1990/03/20
公開日: 2010/06/28
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奥田 義郎1990 年 69 巻 3 号 p. 221
発行日: 1990/03/20
公開日: 2010/06/28
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影山 〓1990 年 69 巻 3 号 p. 222-223
発行日: 1990/03/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (275K)
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