研究者詳細 - 成瀬　一郎

Using sorbents to control heavy metals and particulate matter emission during solid fuel combustion

Yao Hong, Naruse Ichiro

PARTICUOLOGY 7 巻 ( 6 ) 頁： 477 - 482 2009年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Particuology

Some of the heavy metals in coal and wastes vaporize during combustion, concentrate in fine particulates, and emit with the flue gas into the atmosphere, to produce adverse effect on environment and health. This study first investigates the fate of the heavy metal species, especially Pb, Cd and Cr, known as semi-volatile, in various flue gases, especially in the presence of HCl and SO2, by chemical equilibrium calculation, in which, Si and Ca were proposed as base sorbent materials to capture Pb, Cd and Cr. Then Si- and Ca-based compounds as well as waste materials used as sorbents were optimized to capture the heavy metals. Finally, the optimal sorbent was tested in actual burning of dried sewage sludge as solid fuel, to evaluate the effectiveness of the sorbent. Calculated results show that Cl increases the volatility of most heavy metals, while SO2 enhances formation of condensed phases. Among the sorbents tested, kaolin appears most efficient to capture Pb and Cd. For sludge combustion with kaolin addition, both Pb and Cd were shifted from sub-micron to macro-sized particles, and accompanied by considerable decrease of 0.1 μm particles. © 2009.

DOI： 10.1016/j.partic.2009.06.004

Web of Science

名古屋大学大学院工学研究科機械理工学専攻機械科学分野環境・エネルギー工学講座 : 高温エネルギー変換工学研究グループ(成瀬・義家研究室)

成瀬一郎

日本エネルギー学会誌 = Journal of the Japan Institute of Energy 88 巻 ( 1 ) 頁： 81 - 84 2009年1月

界面反応を伴う石炭灰付着機構の解明 Open Access

長沼宏, 池田信矢, 伊藤正, 佐藤文夫, 浦島一晃, 多久和毅志, 義家亮, 成瀬一郎

日本エネルギー学会誌 88 巻 ( 9 ) 頁： 816 - 822 2009年

記述言語：日本語掲載種別：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 control ash deposition on heat exchanger tubes in coal or woody biomass combustion boilers, surface treatment of the tubes, using a thermal spraying technique, was proposed in this study. The ash deposition mechanisms were elucidated, based on physical and chemical aspects, under the condition of long exposure period First, adhesive force (Sb) between ash and alloy surface at high temperature was measured. As the physical aspect, Sb increased with an increase of the exposure time and could be predicted by an improved logistic function. Moreover, Sb depended on the temperature, so that an interface reaction controlled the increasing rate of adhesive force. As the chemical aspect, the interface between the ash deposition and alloy was observed and analyzed by a SEM-EDS and a FE-EPMA to consider the mechanisms of an increase of the adhesive force. The result showed that S and Na contained in the ash composition diffused into the alloy and that Fe mainly composing of the alloy specimens also diffused into the ash deposition. The diffusion coefficient of Fe into the ash deposition was also calculated by the results of a point elemental analysis. These results suggested that the interfacial reactions of the ash particles with the alloy affected the increase of adhesive force.

DOI： 10.3775/jie.88.816

充填層式木質バイオマスガス化炉の反応挙動解明(熱工学,内燃機関,動力など) Open Access

多久和毅志, 鳥越隆志, 義家亮, 成瀬一郎

日本機械学会論文集Ｂ編 75 巻 ( 752 ) 頁： 810 - 816 2009年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本機械学会

Gasification technology is recognized as one of the candidates to utilize the biomass effectively. From this viewpoint, this study focused fundamentals on woody biomass gasification, using a lab- scale packed bed. In this experiment, pellets of black pine are gasified, using air as the gasification agent. The gasification tests were carried out under both updraft and downdraft conditions. The temperature distribution inside the gasifier and the compositions of gasified gas were measured and analyzed during gasification by thermo couples inserted from a furnace wall and a micro gas chromatograph, respectively. The produced gasses before cooling were also sampled to analyze amount of tar generation in the gasses. As a result, the lower heating value of the produced gas under the downdraft condition was higher than that under the updraft condition. It was easier to operate under the downdraft condition than under the updraft. Under the updraft condition, bridging phenomenon happened. Amount of tar generation under the downdraft condition was lower than that under the updraft. This is because tar passes through a partial combustion zone or higher temperature zone in the downdraft gasifier.

DOI： 10.1299/kikaib.75.752_810

No.64 燃焼灰付着挙動の炭種依存性(灰・微量金属(1))

燃焼プロセスにおける微量成分を含む微粒子の生成挙動と炉内吸収技術

成瀬一郎

工業加熱 46 頁： 31 - 37 2009年

界面反応を伴う石炭灰付着機構の解明査読有り Open Access

義家亮, 成瀬一郎

日本エネルギー学会誌 88,2 頁： 816 - 822 2009年

長沼宏, 池田信矢, 成瀬一郎, 義家亮, 植木保昭, 松浦幹夫, 伊藤正, 佐竹英

石炭科学会議発表論文集 46 巻 ( 0 ) 頁： 126 - 127 2009年

記述言語：日本語掲載種別：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 fired boilers, molten ash particles generated during combustion have possibility of adhesion on surface of heat exchanger tubes. This causes problems of heat transfer inhibition such as slagging and fouling as well as boiler trouble on operation. In order to solve this problem, surface treatment technology of the heat exchanger tubes is developed in this study. This paper describes dependence of the adhesive force between the deposition layer and the tube surface on the coal types.

DOI： 10.20550/jiesekitanronbun.46.0_126

膜分離を伴う溶媒抽出による廃潤滑油の再生処理 Open Access

三輪高裕, 義家亮, 植木保昭, 成瀬一郎

廃棄物資源循環学会研究発表会講演集 20 巻 ( 0 ) 頁： 125 - 125 2009年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人廃棄物資源循環学会

現在，潤滑油は多岐にわたって使用されており，国内で年間105万kLの廃潤滑油が発生している[1]．発生した廃潤滑油の大部分は再生重油等燃料などへサーマルリサイクルされており，再生潤滑油としての再生割合は約７％に留まる．今日において白土処理，硫酸処理などの廃潤滑油再生処理方法が実用化されているが，簡便さ，経済性，環境性を考慮するといずれも多くの課題を抱えている．本研究で提案する膜分離を伴う溶媒抽出による廃潤滑油再生処理は，溶媒抽出の際に使用する有機溶媒のほぼ100％がプロセス内で循環するため省資源であり，残渣は廃油中の不純物成分のみであることから廃棄物を低減できる．さらに有機溶媒の沸点（100℃未満）程度の低温プロセスで運転可能である．このような利点を持ち合わせた提案プロセスの実現のため，本研究では廃潤滑油の膜分離を伴う溶媒抽出に関する不純物除去特性を実験的に検討した．

DOI： 10.14912/jsmcwm.20.0.125.0

No.73 石炭燃焼に伴うホウ素の揮発特性(灰・微量金属(3))

野田直希, 松田裕光, 伊藤茂男, 植木保昭, 義家亮, 成瀬一郎

石炭科学会議発表論文集 46 巻 ( 0 ) 頁： 144 - 145 2009年

記述言語：日本語掲載種別：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

Boron contained in coal are partly released to the flue gas during combustion. Boron are captured in flue gas cleaning systems and the emissions of these elements are generally low. However, it is important to understand the behavior of boron to improve the reliability of the gas cleaning systems. Though a lot of researches examined the behavior of boron, the behavior of these elements in coal combustion has not been clarified in detail yet. In this research, the release behavior of boron from coal was investigated using a drop tube furnace (DTF). As a result, it is thought that a part of the boron would be absorbed in molten slag during combustion.

DOI： 10.20550/jiesekitanronbun.46.0_144

充填層式木質バイオマスガス化炉の反応挙動解明査読有り

義家亮, 成瀬一郎

日本機械学会論文集B編 75 頁： 242 - 248 2009年

環境化学工学

竹下健二, 江頭靖幸, 下ヶ橋雅樹, 成瀬一郎

化学工学 = CHEMICAL ENGINEERING OF JAPAN 72 巻 ( 10 ) 頁： 570 - 574 2008年10月

灰付着防止用溶射ワイヤの開発 (第1報) Open Access

伊藤正, 斉藤貞一郎, 長沼宏, 池田信矢, 成瀬一郎, 五十嵐義昭

溶接学会全国大会講演概要 83 巻頁： 206 - 207 2008年8月

灰付着防止用溶射ワイヤの開発（第１報）

伊藤正, 斉藤貞一郎, 長沼宏, 池田信矢, 成瀬一郎, 五十嵐義昭

溶接学会全国大会講演概要 2008f 巻 ( 0 ) 頁： 311 - 311 2008年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人溶接学会

灰付着メカニズムの研究に基づいた成分系の溶射用メタルタイプフラックス入りワイヤについて、溶射皮膜の性質及び実機ボイラへの適用結果の報告。

DOI： 10.14920/jwstaikai.2008f.0.311.0

Role of Methanol in Supercritical Water Oxidation of Ammonia

大気環境

成瀬一郎

化学工学 = CHEMICAL ENGINEERING OF JAPAN 71 巻 ( 10 ) 頁： 702 - 703 2007年10月

Taro Oe, Hiroshi Suzugaki, Ichiro Naruse, Armando T. Quitain, Hiroyuki Daimon, Koichi Fujie

Industrial & Engineering Chemistry Research 46 巻 ( 11 ) 頁： 3566 - 3573 2007年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：American Chemical Society (ACS)

The role of methanol (MeOH) in the supercritical water oxidation (SCWO) of ammonia (NHs) was investigated near the typical operating conditions of a commercial plant at 560-620°C and 25 MPa using a tubular reactor. It was found that the presence of MeOH strongly affected the reaction behavior of nitrogen. With the addition of MeOH, at concentrations more than twice the initial concentrations of NH3 (1.4-5.7 mmol/mol of the feed mixture), the conversion of NH3 to N2O increased by about four times to 0.5-0.6 compared to that with no MeOH addition. The production of NO3- from NH3 increased in the liquid effluent with a conversion of up to 0.2. The productions of NO2-, NO, and NO2 from NH3 had similar behavior under the presence of MeOH at the tested conditions, and significant effects were observed at MeOH concentrations more than 2-6 times of the initial concentrations of NH3. The experimental results made it clear that NO and NO 2 were produced under the SCWO conditions. Methods for the reduction of N2O and NO3- were also investigated. Results showed that SCWO is not suitable for the decomposition of N2O. Other post-treatment methods such as catalytic decomposition should be applied to reduce N2O in the gas effluent. NO3- reduction methods (e.g., two-step reaction) proposed in this study should also be considered to prevent corrosion of the reactor material. © 2007 American Chemical Society.

DOI： 10.1021/ie070168u

P224 バイオマス充填層ガス化炉による基礎ガス化実験(ポスター発表)

鳥越隆志, 成瀬一郎

バイオマス科学会議発表論文集 2 巻 ( 0 ) 頁： 88 - 89 2007年

記述言語：日本語掲載種別：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

The biomass gasification has recently been recognized as one of the candidate technologies to utilize the biomass effectively. In this study, pellets of black pine are gasified in a packed-bed gasifier, using air as gasification agent. In the gasification tests, the temperature distribution in the gasifier and the compositions in the gasified gas are measured and analyzed during gasification by thermo-couples and a micro gas chromatograph, respectively. Fundamental gasification characteristics in the packed-bed were discussed by those results obtained.

DOI： 10.20550/jiebiomassronbun.2.0_88

O211 電気加熱式ドロップチューブ反応炉によるCO_2および水蒸気を用いた木質バイオマスの基礎ガス化特性(セッション4:技術～基礎～,口頭発表)

榛葉貴紀, 成瀬一郎

バイオマス科学会議発表論文集 2 巻 ( 0 ) 頁： 36 - 37 2007年

記述言語：日本語掲載種別：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

Fundamental gasification characteristics in CO_2 and H_2O atmospheres at high temperature are experimentally studied, using an electric heated drop tube furnace. The gasification experiments are performed, changing temperature at the furnace wall, gasification agents and residence time. Hinoki sawdust is selected as a fuel. In the experiments, the gas composition and the elemental compositions in the residual reaction particles are analyzed. The result shows that co-existence of CO_2 with H_2O can enhance the gasification performance, compared with the individual gasification characteristics.

DOI： 10.20550/jiebiomassronbun.2.0_36