研究者詳細 - 成瀬　一郎

論文 - 成瀬　一郎

分割表示 483 件中 361 - 380 件目／全件表示 >>

長沼宏, 成瀬一郎, 宮内良樹, 河合隆之, 伊藤正, 三木良治, 相澤威一郎, 狩野勝広

日本エネルギー学会誌 = Journal of the Japan Institute of Energy 86 巻 ( 2 ) 頁： 102 - 108 2007年2月

掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本エネルギー学会

In order to prevent adhesion of molten ash particles on the surface of heat exchanger tubes in coal combustion boilers, surface treatment of the tubes, using a thermal spray coating techniaue, is conducted in this study. As one of the important mechanisms of ash adhesion relates to liquid-bridge force between the tube surface and the molten ash particles, contact angle of the liquid-phase on the surface for the simulated molten ash particles was measured, varying types of coating metal species. The ash deposition experiments on the coated tubes were also conducted, using a ertical furnace under the high-temperature condition. The result showed that the two values of the wettability and the slagging factor of the ash particles deposited could evaluate the ash adhesion characteristics. The wettablity could be controlled by changing types of the coating metal species. The amount of ash deposition increased with an increase of the slagging factor. Especially, sodium and potassium compounds were concentrated in the position apart from 60 egrees from the stagnation point. These results suggest that the surface treatment of the tubes, using a thermal spray coating technique, can control the ash deposition behaviors.

Emission control of sodium compounds and their formation mechanisms during coal combustion 査読有り

T. Takuwa and I. Naruse

Proceedings of the Combustion Institute 31 巻頁： 2863-2870 2007年

Role of Methanol on Supercritical Water Oxidation of Ammonia, 査読有り

Suzugaki H.,Naruse I.Quitain,A.T.,Daimon,H.,Fujie,K.

Ind.Eng.Chem.Res. 46 巻頁： 3566-3573 2007年

Detailed kinetic and control of alkali metal compounds during coal combustion 査読有り

Tsuyoshi Takuwa and Ichiro Naruse

Fuel Processing Technology 88 巻 ( 11-12 ) 頁： 1029-1034 2007年

Detailed kinetic and control of alkali metal compounds during coal combustion 査読有り

Tsuyoshi Takuwa, Ichiro Naruse

Fuel Processing Technology 88 巻 ( 11-12 ) 頁： 1029-1034 2007年

石炭灰の付着挙動に及ぼす液相成分の影響

長沼宏, 成瀬一郎, 宮内良樹, 河合隆之, 伊藤正, 三木良治, 相澤威一郎, 狩野勝広

日本エネルギー学会誌 86 巻 ( 2 ) 頁： 102 - 108 2007年

掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本エネルギー学会

In order to prevent adhesion of molten ash particles on the surface of heat exchanger tubes in coal combustion boilers, surface treatment of the tubes, using a thermal spray coating technique, is conducted in this study. As one of the important mechanisms of ash adhesion relates to liquid-bridge force between the tube surface and the molten ash particles, contact angle of the liquid-phase on the surface for the simulated molten ash particles was measured, varying types of coating metal species. The ash deposition experiments on the coated tubes were also conducted, using a vertical furnace under the high-temperature condition. The result showed that the two values of the wettability and the slagging factor of the ash particles deposited could evaluate the ash adhesion characteristics. The wettablity could be controlled by changing types of the coating metal species. The amount of ash deposition increased with an increase of the slagging factor. Especially, sodium and potassium compounds were concentrated in the position apart from 60 degrees from the stagnation point. These results suggest that the surface treatment of the tubes, using a thermal spray coating technique, can control the ash deposition behaviors.

DOI： 10.3775/jie.86.102

Scopus

Emission control of sodium compounds and their formation mechanisms during coal combustion 査読有り

T. Takuwa, I. Naruse

Proceedings of the Combustion Institute 31 巻頁： 2863-2870 2007年

Emission control of sodium compounds and their formation mechanisms during coal combustion

Takuwa T.

Proceedings of the Combustion Institute 31 II 巻頁： 2863 - 2870 2007年

Role of coal utilization technologies for suatainable society

Naruse Ichiro

PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON COAL COMBUSTION 頁： 23 - 29 2007年

Role of Methanol on Supercritical Water Oxidation of Ammonia, 査読有り

Suzugaki H, Naruse I.Quitain,A.T, Daimon,H, Fujie,K

Ind.Eng.Chem.Res. 46 巻頁： 3566-3573 2007年

1-18 石炭灰と金属との付着力温度依存性((6)石炭灰,金属,Session 1 石炭・重質油等,研究発表(口頭発表))

長沼宏, 池田信矢, 成瀬一郎, 河合隆之, 伊藤正, 五十嵐義昭

日本エネルギー学会大会講演要旨集 16 巻 ( 0 ) 頁： 36 - 37 2007年

37 微粉炭燃焼場における灰付着特性の予測(灰付着,アルカリ金属)

成瀬一郎, 河合隆之

石炭科学会議発表論文集 44 巻 ( 0 ) 頁： 74 - 75 2007年

掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本エネルギー学会

In pulverized coal combustors, molten ash particles generated during combustion have possibility of adhesion on surface of heat exchanger tubes. This ash deposition layer formed plays a role for insulation surrounding the tubes. In order to prevent this problem, it is, first, necessary to predict ash deposition characteristics. In this paper, not only amount of the ash deposition was measured experimentally, but also that amount was compared with amount of the slag-liquid phase calculated by the thermal equilibrium theory. As a result, the amount of slag-liquid phase calculated could be correlated with the amount of ash deposition obtained experimentally.

DOI： 10.20550/jiesekitanronbun.44.0_74

Genetic susceptibility in the neural tube defects induced by ochratoxin A in the genetic arhinencephaly mouse, Pdn/Pdn.

Ohta K, Maekawa M, Katagiri R, Ueta E, Naruse I

Congenital anomalies 46 巻 ( 3 ) 頁： 144 - 8 2006年9月

Mercury emissions and species during combustion of coal and waste

Yao H.

Energy and Fuels 20 巻 ( 5 ) 頁： 1946 - 1950 2006年9月

プロセス内の微量金属の収支と生成機構

二宮善彦, 成瀬一郎

化学工学 = CHEMICAL ENGINEERING OF JAPAN 70 巻 ( 7 ) 頁： 329 - 334 2006年7月

Mechanisms of fine particulates formation with alkali metal compounds during coal combustion

Takuwa T.

Fuel 85 巻 ( 5-6 ) 頁： 671 - 678 2006年3月

石炭のガス化過程における灰挙動と付着現象

成瀬一郎, 山下亨, 秋本明光

日本エネルギー学会誌 = Journal of the Japan Institute of Energy 85 巻 ( 1 ) 頁： 20 - 27 2006年1月

掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本エネルギー学会

This report deals with comprehensive studies on ash formation, ash deposition and growth of the deposition layer during gasification. For the ash formation, both the coagulation model for the included mineral particles and the splitting model for the excluded mineral particles are developed, based on the experimental and analytical results obtained. For the ash deposition process, the ash deposition characteristics depend on properties of ash in raw coals, especially for the melting temperature. The fine ash particles selectively adhere at the initial stage of deposition. The ash compositions of the depositing particles differ from those of the ash particles in the char particles before deposition. For growth of the ash deposition layer, both the melting tests for several types of coal ash and the chemical equilibrium calculations on the molten phases of some ash compositions contribute to modeling the growth behaviors of ash deposition layer during gasification. Finally, the actual coal gasification tests are conducted at atmospheric pressure, using a bench-scale coal gasifier, to confirm the validity of some models developed in these studies.

Ash behaviors and deposition phenomena in coal gasification

Naruse I.

Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy 85 巻 ( 1 ) 頁： 20 - 27 2006年1月

Mechanisms of Fine Particulates Formation with Alkali Metal Compounds during Coal Combustion 査読有り

T. Takuwa, I. S. N. Mkilaha and I. Naruse

Fuel 85 巻頁： 671-678 2006年

Mercury Emissions and Species during Combustion of Coal and Waste 査読有り

Hong Yao, Guangqian Luo, Minghou Xu, Tamotsu Kameshima and Ichiro Naruse

Energy & Fuels 20 巻頁： 1946-1950 2006年

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