Faculty Profiles - NARUSE Ichiro

Papers - NARUSE Ichiro

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固体の燃焼

成瀬一郎

日本エネルギー学会誌 = Journal of the Japan Institute of Energy Vol. 81 ( 7 ) page： 606 - 607 2002.7

燃焼プロセスにおける水銀の挙動と制御

成瀬一郎

化学工学 Vol. 66 ( 4 ) page： 247 - 248 2002.4

固体の燃焼

成瀬一郎

日本エネルギー学会誌 = Journal of the Japan Institute of Energy Vol. 80 ( 7 ) page： 605 - 606 2001.7

Prediction of Evolution Characteristics of Alkali Metal Compounds in Coal Combustion/Gasification from Coal Properties.

MURAKAMI TAKAHIRO, NARUSE ICHIRO

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN Vol. 34 ( 7 ) page： 899 - 905 2001

Language：English Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan

Fundamental evolution characteristics of alkali metal compounds, especially sodium compounds in coal combustion/gasification were experimentally studied using a rapidly heated batch reactor under a wide range of temperature conditions. Six types of coal with different properties were reacted in the reactor. The evolution characteristics of sodium compounds obtained experimentally were compared with those predicted using both coal properties of cross-correlation coefficient between sodium and silicon in the raw coal and the fraction of condensed sodium aluminosilicates in the residue, calculated by the thermochemical equilibrium theory. The reason why the two indices were selected is that the sodium aluminosilicates was detected by X-ray diffraction analysis in the residue. The cross-correlation coefficient between sodium and silicon in the raw coal is calculated using two digital images of sodium and silicon distributions obtained by the Energy dispersed X-ray (EDX) analysis at the cross-section of raw coals. On the other hand, the chemical equilibrium calculation is performed by prescribing the experimental conditions and ultimate analysis data and ash compositions of the coal. The results predicted correlated well with the experimental data even when the evolution characteristics of sodium was dependent on the coal type and when the experimental conditions were varied widely. The coal with low cross-correlation coefficient between sodium and silicon and low fraction of condensed sodium aluminosilicates in the residue was found to release sodium compounds. Both of the two indices proposed can contribute to the prediction of fundamental evolution characteristics of alkali metal compounds in the coal combustion/gasification.

DOI： 10.1252/jcej.34.899

Scopus

CiNii Research

Output-Input and Input-Output Database in Industrial Processes.

Yoshida Hiroyuki, Imaoka Tsutomu, Tanada Seiki, Kajiuchi Toshio, Naruse Ichiro, Ohno Katsuhisa, Muroyama Katsuhiko, Sawada Tatsuro, Ishii Mikita, Hatate Yasuo, Funazukuri Toshitaka, Shirai Yoshihito, Goto Motonobu, Nagai Minoru, Hirao Masahiko, Katayama Hiroyuki, Mizuno Noritaka, Goto Shigeo

ENVIRONMENTAL SCIENCE Vol. 14 ( 4 ) page： 333 - 343 2001

Methodology to Construct Material Circulation Network in a Local Community

NARUSET Ichiro, GOTOW Tomoyuki, YAMAUCHI Kenji, FUNATSU Kimito

ENVIRONMENTAL SCIENCE Vol. 14 ( 2 ) page： 231 - 237 2001

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：SOCIETY OF ENVIRONMENTAL SCIENCE, JAPAN

In order to realize a social system with sustainable development, it is necessary for local communities to construct inter-industries material circulation network. In this aspect, wastes evolving from the industries are defined as unused materials. This study suggests a methodology of constructing networks among different industries for reusable materials. Two types of databases are made by means of industrial surveys. One of the databases reveals information about raw material, products and wastes, which is received or emitted on each company of industries in a subject community. The second database defines conversion technologies that enable to transform the wastes into reusable materials. Based on the databases, a network simulator program can analyze material flows in the community. In this paper, Higashi-Mikawa area in Aichi Prefecture was chosen as a model of local community, and the databases of the industries and wastes treatment companies were made, furthermore the material flow for. selected wastes were simulated. Additionally, one suggestion about optimum material circulation network in an application of proper conversion technology is hypothetically designed.

DOI： 10.11353/sesj1988.14.231

CiNii Research

Emission and De-chlorination Characteristics in Refuse-Derived Fuel Combustion.

Naruse Ichiro, Higuchi Atsushi, Yanagino Hideo

KAGAKU KOGAKU RONBUNSHU Vol. 27 ( 5 ) page： 604 - 609 2001

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan

Fundamental de-chlorination characteristics of Refuse-Derived Fuels (RDF), which were developed for use as a source of thermal energy, were studied by using both practical RDF and simulated RDF. For the simulated RDF polyvinyl chloride (PVC) or NaCl was added as a chlorine source. In the experiments, single pellets of RDF were burned in an electrically heated batch furnace. The de-chlorination efficiency was calculated by analysis of Cl in the residue after combustion. The efficiency obtained was compared with that obtained by chemical equilibrium calculation. HCl was found to be mainly emitted during the volatile matter combustion. The de-chlorination characteristics for PVC addition differ from that for NaCl addition. For the RDF with PVC and Ca(OH)2 addition, the de-chlorination reaction depends on the furnace temperature, and the optimum temperature is about 923 K. At low temperature the de-chlorination rate is slower than the evolution rate of HCl gas, whereas high temperature, CaCl2, which is produced by the de-chlorination reaction, is decomposed during the char combustion. For the NaCl addition, C1 is not absorbed into a Ca compound. According to chemical equilibrium calculation, NaCl is evaporated as a form of NaCl and Na2Cl2 vapors, and HCl is not produced.

DOI： 10.1252/kakoronbunshu.27.604

Scopus

CiNii Research

Reaction Behavior of Coke Lump in Raceway of Blast Furnace with Pulverized Coal Injection.

Naruse Ichiro, Nakayama Katsuya, Higuchi Atsushi, Khairil

ISIJ International Vol. 40 ( 8 ) page： 744 - 748 2000

Language：English Publishing type：Research paper (scientific journal) Publisher：The Iron and Steel Institute of Japan

Reaction behaviors of a coke lump in raceway of blast furnaces which pulverized coal injection technology was adopted were studied by using a horizontal pulverized coal reactor. In the experiments two types of coke lump were used as samples. In the experiments, the reaction behaviors of coke lump were continuously observed by an 8 mm video camera system. Mass change of the coke lump was weighed at each exposure time, and surface temperature of the coke lump was also continuously measured by a two-color pyrometer. Additionally, both the reacting coal particles and gas were sampled and analyzed, and the deposition on the coke surface was also analyzed. In order to elucidate the effect of ash particles in coal on the coke reaction, LPG was also supplied as a fuel into the reactor instead of coal. As a result, mass loss of coke in the coal combustion is larger than that in the LPG combustion. When the coal particles collide with the coke at the surface, the ash particles easily stick there and spherical molten ash is formed on the surface. For the LPG combustion, only small spherical molten ash resulted from the coke is formed. Those results suggest that ash particles of the coal may enhance coke degradation due to chemical interactions between coal ash and coke.

DOI： 10.2355/isijinternational.40.744

Scopus

CiNii Research

69. Ash Adhesion Behavior in Coal Gasification Reactor

YAMASHITA Toru, TOMINAGA Hiroaki, NARUSE Ichiro, ASAHIRO Norio

Proceedings of Conference on Coal Science Vol. 37 ( 0 ) page： 281 - 284 2000

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Institute of Energy

The adhesion behavior of ash generated during coal gasification under high temperature condition was investigated by using horizontal-type pulverized coal reactor with water-cooled tube. The size distribution and chemical composition of attacking and deposited particles on tube surface were measured by CCSEM (Computer Controlled Scanning Electron Microscopy). The fraction of fine size and low fusion temperature in collision particles selectively adhered to tube surface. The ash adhesion probability to dry surface was determined by the collision efficiency and viscosity prediction of each particle. Ash adhesion model that will be applied to the gasifier was proposed.

DOI： 10.20550/jiesekitanronbun.37.0_281

CiNii Research

7-4. Fundamentals on Combustion and De-chlorine Behaviors of Refuse Derived Fuel

HIGUCHI Atsushi, YANAGINO Hidero, NARUSE Ichiro

Proceedings of the Annual Conference of The Japan Institute of Energy Vol. 9 ( 0 ) page： 285 - 288 2000

Effect of Alkali Metal Compounds into Sea-Shell on Desulfurization Characteristics.

MURAKAMI Takahiro, SAITO Katsuhiro, NARUSE Ichiro

Journal of the Japan Institute of Energy Vol. 79 ( 11 ) page： 1070 - 1077 2000

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Institute of Energy

Influence of alkali metal compounds on desulfurization characteristics of sea-shell and limestone was elucidated quantitatively by using a thermobalance in this study. Scallop removed alkali metals and chlorine and Tsukumi limestone added several alkali metal compounds and chlorides were used as a sample. In order to elucidate additive effect of sodium chloride into the limestone on the desulfurization characteristics, the mean pore size by a pore sizer, the sulfur distribution within a reacting particle by an EDX system and the crystal structure of particles by a XRD system were measured. As a result, the desulfurization efficiency for the scallop even after removing the alkali metals and chlorine little changed. The addition of sodium chloride into the limestone can increase the desulfurization efficiency best. Both the mean pore size and the crystal structure of the calcined limestone, into which sodium chloride was added, was similar to those of the calcined scallop.Thus the desulfurization reaction produced over the whole of a particle. However, even if sodium chloride was added into the calcined limestone (CaO), the desulfurization efficiency was not promoted.

DOI： 10.3775/jie.79.1070

Scopus

CiNii Research

Studies on Combustion and Sulfur Fixation Characteristics of Coal-Biomass Briquette

WANG Qing-Yue, LU Guo-Qing, SAKAMOTO Kazuhiko, MARUYAMA Toshihiko, KIM Hee-Joon, NARUSE Ichiro, HATAKEYAMA Shiro, MIZOGUCHI Tsuguo, LUO Rong-Xue, KAMIDE Mitsushi

Earozoru Kenkyu Vol. 15 ( 4 ) page： 364 - 371 2000

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japan Association of Aerosol Science and Technology

In order to utilize low-grade coals, which contain high concentrations of sulfur (2-6 wt. %) and ash (>15 wt. %, dry basis), controlling pollutant emissions during combustion in domestic stoves and small-capacity industrial boilers, a composite solid fuel “coal-biomass briquette” with sulfur fixation function was produced in a pilot plant in Chongqing city, China. It was composed of 80 wt. % of low-grade coal and 20 wt. % of biomass (e. g., wood chips and agricultural wastes) with a small fraction of sulfur-fixation additives. In this study, we investigated the ignition and combustion characteristics of the coal-biomass briquettes, and developed a new sulfur fixation additive made from sub-product in gas welding industries. It was found that the coal-biomass briquette has the lower ignition temperature and higher combustion efficiency than the usual coal briquettes, and that the newly developed additive was superior to limestone or scallop shells in sulfur fixation capability. This method is simple, economical, and efficient, in terms of emission control of SO2, CO and other particulate pollutants from the combustion of low-grade coals using the conventional domestic stoves and boilers without modification. The coal-biomass briquette can be applicable for pollution control of coal combustion in some developing countries.

DOI： 10.11203/jar.15.364

CiNii Research

Reaction Behaviors of Coke under High-temperature Pulverized Coal Reaction Conditions

HIGUCHI Atsushi

Vol. 12 ( 1 ) page： 70 - 72 1999.3

Fundamental Evolution Characteristics of Alkali Metal Compounds in Coal Combustion.

MURAKAMI TAKAHIRO, NODA REIJI, NARUSE ICHIRO, OHTAKE KAZUTOMO

KAGAKU KOGAKU RONBUNSHU Vol. 25 ( 3 ) page： 389 - 394 1999

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan

In combined cycle power generation systems for coal combustion and/or gasification, the vapor of alkali metal compounds may cause hot corrosion at the surface of blades of a gas turbine. The influence of coal type on fundamental evolution characteristics of alkali metal compounds, especially sodium compounds, in coal combustion is experimentally elucidated in this study by using a rapidly heated electrical batch combustor. Both classification of forms of sodium compounds and analysis of the cross-correlation coefficients between the existing locations of sodium and other elements in the cross-section of a particle of raw coal by using an EDX (Energy Dispersive X-ray) system and an image correlation method are conducted in order to quantify the effect of coal type on the sodium evolution characteristics. As a result, the evolution characteristics of sodium are influenced by the coal type. Most of the sodium evolved is classified as water-soluble sodium. Coal in which sodium chloride is contained as a major sodium compound evolves sodium compounds more easily than other coals do. The distributions of sodium, silicon and aluminum in a coal particle contribute to the evolution characteristics of sodium. Coals with high cross-correlation coefficients between sodium and silicon/aluminum show low evolution fraction of sodium.

DOI： 10.1252/kakoronbunshu.25.389

Scopus

CiNii Research

Non-Contact Temperature Measurement under High Temperature Conditions

NARUSE Ichiro

Vol. 62 ( 1 ) page： 47 - 48 1998.1

Self-Denitrification Behavior of Biobriquette Added with Pulp Black Liquid.

KIM HEE-JOON, NARUSE ICHIRO, LU GUO-QING, OHTAKE KAZUTOMO, KAMIDE MITSUSHI

KAGAKU KOGAKU RONBUNSHU Vol. 24 ( 5 ) page： 779 - 783 1998

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Society of Chemical Engineers, Japan

The characteristics of self-denitrification in biobriquettes are studied experimentally. To enhance effective utilization of low-grade coals, and to control emission of environmental pollutants from combustion, a new artificial solid fuel, a biobriquette with a self-denitrification function, is developed. It was produced by the mixture of low-grade coal, cornstalk as biomass and pulp black liquid as denitrificazer under a high compression pressure condition. Both experiments of pyrolysis and combustion were performed in order to reveal the mechanism of nitrogen-oxide formation and denitrification of the biobriquette. It is found that the release fraction of fuel-N is raised with increasing pyrolysis temperature in both coal and biomass. The release fraction of fuel-N in biomass is much higher than coal at the same pyrolysis temperature. The conversion fraction of fuel-N to NO slightly ascends and the fraction to N2O slowly descends with increasing furnace temperature, but the sum of conversion fraction of fuel-N to NO and N2O appears to be independent of furnace temperature. The denitrification process of the biobriquette with the pulp black liquid appears to proceed as two stages, namely the volatile combustion stage and the char combustion stage. Denitrification mainly happens in the char combustion stage. A denitrification efficiency of 40% can be obtained in the biobriquette combustion with a pulp black liquid of 10 mass%. Finally, it is confirmed for the first time that the pulp black liquid has significant denitrification capabilities in the biobriquette combustion.

DOI： 10.1252/kakoronbunshu.24.779

Scopus

CiNii Research

Study on characteristics of self-desulfurization and self-denitrification in biobriquette combustion

Naruse I., Kim H., Lu G., Yuan J., Ohtake K.

Symposium (International) on Combustion Vol. 27 ( 2 ) page： 2973 - 2979 1998

Language：English Publishing type：Research paper (scientific journal) Publisher：Symposium (International) on Combustion

The characteristics of self-desulfurization and self-denitrification in biobriquettes were studied experimentally and numerically in this paper. The biobriquette was produced by mixing coal, biomass, desulfurizer, and/or denitrificater under a high-compression pressure condition. The combustion process of biobriquette appears in two stages, namely the volatile combustion stage and the char combustion stage. It was proved that limestone, wasted scallop shell, and calcium hydroxide have effective self-desulfurization capability in biobriquette combustion and that desulfurization mainly happens in the char combustion stage. Comparatively among the three desulfurizers used, calcium hydroxide has the highest desulfurization capability because of its lower calcination temperature, and scallop shell the second because of the larger porosity after calcination. A desulfurization efficiency as high as about 80% can be reached for some kinds of coals using scallop shell as desulfurizer with Ca/S over 3. A modified shrinking-core model was developed to predict the desulfurization efficiency in the char combustion stage, and an approximate agreement was obtained between the predictions and the experiments. It was also found that pulp black liquid, an industrial waste to roll as binder in the biobriquetting process, has both self-denitrification and self-desulfurization capabilities in biobriquette combustion. A denitrification efficiency of about 40% can be obtained by adding the pulp black liquid into biobriquette with about 15% in mass.

DOI： 10.1016/S0082-0784(98)80157-4

Scopus

Reduction of pollutants from diesel exhaust by high pressure gas injection

Kawai D., Mkilaha I., Osawa T., Naruse I., Ohtake K.

JSAE Review Vol. 18 ( 3 ) page： 241 - 245 1997.7

Language：English Publishing type：Research paper (scientific journal) Publisher：JSAE Review

In order to reduce the pollutants from diesel exhaust, high-pressure gas was injected during combustion into a modified pre-chamber of an IDI diesel engine at a varied load and gas injection timing. The result shows that high-pressure gas injection can reduce the particulates and NOx simultaneously, with little influence on the engine performance. The combustion process in the pre-chamber was visualized by means of an ultra high-speed video system and image analysis of the pictures obtained. The results of the visualization show that by injecting gas, the flame is first quenched, followed by the reduction of NOx in the pre-chamber by hydrocarbon. Although high-pressure gas injection could have caused a substantial increase in HC as a result of temperature quenching, this seems to be controlled by the consumed portion of HC during the recycling of NOx. Chemical analysis of polycyclic aromatics compounds was carried out for the purpose of establishing its variations with gas injection. It was established that gas injection not only reduces PM by oxidation of solid carbon, but also the PAH component. © 1997 Society of Automotive Engineers of Japan, Inc. and Elsevier Science B.V.

DOI： 10.1016/S0389-4304(97)00013-1

Scopus

Reduction of pollutants from diesel exhaust by high pressure gas injection

KAWAI Daizaburo, MKILAHA Iddi S. N., OSAWA Takuya, NARUSE Ichiro, OHTAKE Kazutomo

Vol. 18 ( 3 ) page： 241 - 245 1997.7

Simultaneous reduction of particulate matter and NO<inf>x</inf> in a diesel engine by compressed gas injection: Macroscopic study at residual load

Mkilaha I.S.N., Inoue M., Kawai D., Naruse I., Ohtake K.

Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering Vol. 211 ( 3 ) page： 227 - 236 1997

Language：English Publishing type：Research paper (scientific journal) Publisher：Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering

A modified pre-chamber of an indirect injection (IDI) diesel engine was used to elucidate the influence on emissions of compressed air injection into the pre-chamber during combustion. The test parameters were air injection timing and arrangements of gas injection. This paper presents the experimental results for two types of injection arrangements; I- and Y-type. The I-type is arranged such that the gas injection jet and fuel injection nozzle are in opposite directions, while the Y-type is such that it forms a 'Y' shape with the nozzle and the passageway. Results obtained reveal that the Y-type arrangement is superior in combustion characteristics and emissions reduction to the I-type. A remarkable reduction in both particulate matter (PM) and NOx is realized at air injection timings during 35° and 65° after top dead centre (ATDC). The reduction mechanism can be explained as due to the induced turbulence which improves mixing and heat transfer. The effect of the modifications on the performance of the engine was evaluated based on the fuel economy and efficiency. This evaluation has shown that the test cylinder approximates closely to the normal cylinder of the original engine. © IMechE 1997.

DOI： 10.1243/0954407971526380

Scopus

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