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61 巻, 4 号
選択された号の論文の8件中1～8を表示しています
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本田 英昌1982 年 61 巻 4 号 p. 229-230
発行日: 1982/04/20
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (410K) -
定方 正毅1982 年 61 巻 4 号 p. 231-240
発行日: 1982/04/20
公開日: 2010/06/28
ジャーナル フリーMeasurement techniques for coal combustion system were reviewed from the point of view of a furnace scale-up.The calculation results of scale-up effect on the basis of simple turbulent theory indicated that turbulent mixing was especially sensitive to scale change.
Measurement techniques of 1) velocity fluctuation by means of correlation method and microphone probe, 2) turbulent mixing time by high speed combustion reaction, 3) turbulent diffusion by helium tracer were mainly explained. Classification sampling of fly ash and removement of ash for gas sampling those are peculiar to the measurement of coal combustion were also explained.抄録全体を表示PDF形式でダウンロード (1339K) -
子安 勝1982 年 61 巻 4 号 p. 241-249
発行日: 1982/04/20
公開日: 2010/06/28
ジャーナル フリーIn relation to the measurement of combustion noise, basic quantities for the evaluation of noise and the general requirements for the measuring equipments are reviewed. Requirements for the acoustical environments of measuring sites, such as anechoic rooms, semi-anechoic rooms and reverberation rooms are also shown. For the measurements of noise in the high temperature atmosphere, it is necessary to pay an special attention for the specification of measuring microphones. Probe-tube microphones are used for this purpose. Practical examples of probe-tube microphones which have the improved frequency characteristics and high temperature capability suitable for the measurements of combustion noise are described.抄録全体を表示PDF形式でダウンロード (1293K) -
鈴木 孝弘, 石田 愈1982 年 61 巻 4 号 p. 250-257
発行日: 1982/04/20
公開日: 2011/02/23
ジャーナル フリーThe prediction of thermochemical properties of coal is required to perform energy analyses of process systems related to coal.
Three kinds of methods to estimate the heat of formation ΔHfº and the absolute entropy Sº for coal based on the group-contribution method are proposed. The first one is based on the rigorous molecular structure of coal. In the second one, the main molecular groups are estimated from the ratios of C, H and O atoms in coal. In the third one, polynomial equations are derived to readily caluculate ΔHfº and Sº.抄録全体を表示PDF形式でダウンロード (1000K) -
合金表面上での触媒活性種 (Saechol) の合成吉井 恒雄, 柳沼 力夫, 宇藤 清一, 吉川 宏之1982 年 61 巻 4 号 p. 258-263
発行日: 1982/04/20
公開日: 2010/06/28
ジャーナル フリーThe formation of the catalytic species for coal liquefaction was attempted on the surface of various alloys in order to develop a new catalyst having a high mechanical stregth, a high activity and a long life time.
Stirrer-rods which were equipped with stirrer-blades made of SUS 304, SUS 316, SKH 9, SCM 3 and Mo-plate were treated separately, as follows:
A) treated with H2O under CO pressure at 400°C.
B) after the treatment A), it was treated with tetralin, catechol under H2 pressure at 420°C.
C) treated with NaOH and H2O under CO pressure at 400°C.
D) after the treatment D), it was treated with tetralin, catechol under H2 pressure at 420°C.
When the blades made of SUS 316, SKH 9 and SCM 3 were treated by the procedure D), the degree of conversion increased remarkably, but none of the other procedures elevated the conversion yield. In addition, the blades made of SUS 304 and Mo-plate were treated with A) ∼D) were ineffective as liquefaction catalyst.
It is considered from these results that a new catalytic active species is formed on the surface of blades made of SUS 316, SKH 9 and SCM 3 by the procedure D).
And also, Saechol is effective for hydrogenation of Lithgow and Wandowan coal. The inactivation of the catalyst is found to be recovered easily by the procedure D) after combustion and then washing itself in 6N HCl.抄録全体を表示PDF形式でダウンロード (862K) -
吉井 恒雄, 柳沼 力夫1982 年 61 巻 4 号 p. 264-267
発行日: 1982/04/20
公開日: 2010/06/28
ジャーナル フリーAn Australian Yallourn coal was hydrogenated in the vehicle of diphenylether at various temperatures and hydrogen initial pressures by use of SAECHOL catalyst formed on the surface of SCM-3 blades. The results show that the degree of conversion increases with an increase not only in temperature but also in hydrogen pressure, and that SAECHOL has a long life-time and a high catalytic activity comparable to that of a red mud-sulphur catalyst. Major roles of SAECHOL catalyst is inferred to activate gaseous hydrogen in the vehicle and to accelerate the formation of free radicals during the pyrolysis of the coal.抄録全体を表示PDF形式でダウンロード (534K) -
平間 利昌, 河内山 康司, 千葉 忠俊, 小林 晴夫1982 年 61 巻 4 号 p. 268-275
発行日: 1982/04/20
公開日: 2010/06/28
ジャーナル フリーThe effect of NH3 on NO reduction and formation was experimentally investigated using a homogeneous (gas phase reaction) or heterogeneous (with solid particles) tubular reactor.
Without oxygen, neither NH3 decomposition nor NO reduction by NH3 was observed in homogeneous systems, whereas both reactions significantly did occur in heterogeneous systems. The formation of NO from NH3 with oxygen was remarkably promoted in the heterogeneous systems than in the homogeneous systems.
A model for NO-NH3 reaction in the heterogeneous system was proposed based on the present results. For the reduction of NO emission from a two-stage fluidized bed combustor, the catalytic effect of solid particles in the upper bed was evaluated on the basis of the present model and the previous experimental data.抄録全体を表示PDF形式でダウンロード (977K) -
CH3OH添加の効果村上 信明, 小嶋 信之, 橋口 稔1982 年 61 巻 4 号 p. 276-284
発行日: 1982/04/20
公開日: 2010/06/28
ジャーナル フリーThe reaction characteristics of CH3OH-NO-O2 (N2 base) system were investigated using the synthetic bombe gas, electric furnace, and quartz test tube (18mm in diameter). Operating factors were temperature, residence time, CH3OH/NO molar ratio and O2 concentration. Results were summerized as follows.
1) NO was oxidized to NO2 at about 550∼850°C in CH3OH-NO-O2 system, and CH3OH was decomposed rapidly by the effect of NO.
2) High oxidation ratio of NO to NO2 was obtained in the case of high concentration of O2, and high molar ratio of CH3OH/NO.
3) Using the Kinetic simulation model, the effect of operating factors were analysed.The important role of HO2 radical in NO oxidation to NO2, and H radical in NO2 reduction to NO were suggested.抄録全体を表示PDF形式でダウンロード (1075K)
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