研究者詳細 - 成瀬　一郎

論文 - 成瀬　一郎

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714 石炭燃焼場における脱硫特性の分子動力学的検討(FM-2 エネルギーと環境保全)

村上高広, 栗田典之, 成瀬一郎

関西支部講演会講演論文集 2001 巻 ( 0 ) 頁： _7 - 27_-_7-28_ 2001年

掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本機械学会

Limestone has been currently used as a desulfuriser to capture SOx emitted from fluidized bed coal combustors. The limestone mainly consists of CaCO_3, which is also contained in seashells. Considering this similarity, desulfurization characteristics of the seashells and limestone were compared in our previous study. From the results obtained, the desulfurization efficiency of seashell was over twice higher than that of limestone. The reason of high desulfurization efficiency of seashell is caused by high alkali content in the seashells. In the present study, molecular dynamics (MD) simulations will be useful to study that relationship theoretically. Therefore, we adopted MD simulations relating to CaO structure. In the simulation, two cases of CaO alone and CaO-NaCl or KCl systems were analyzed in order to elucidate change of the molecular structure for CaO due to the alkali addition.

DOI： 10.1299/jsmekansai.2001.76._7-27_

48.石炭燃焼過程から排出されるアルカリ金属化合物含有粒子の放出挙動

多久和毅志, 村上高広, 成瀬一郎

石炭科学会議発表論文集 38 巻 ( 0 ) 頁： 199 - 202 2001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 coal-fired combined power generation systems like pressurized fluidized bed combustion (PFBC), vapor-phase alkali metal compounds from coal contaminate the reaction gas, which may cause hot corrosion of turbine blades. In this study, evolution behaviors of the alkali metal compounds, especially for sodium compounds, in coal combustion were elucidated, sampling and shifting the fine particulates in the combustion process and analyzing the sodium concentration. Concentration of fine particulates and distribution of sodium concentration in the particulates depended on coal type. The mechanism of sodium enrichment was estimated by the result of sodium concentration in the particulates shifted.

DOI： 10.20550/jiesekitanronbun.38.0_199

47.反応過程微粉炭粒子内の灰粒子解析による灰付着機構の解明

神柱大助, KHAIRIL, 成瀬一郎, 山下亨, 富永浩章

石炭科学会議発表論文集 38 巻 ( 0 ) 頁： 195 - 198 2001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

Precise and quantitative behaviors on ash deposition phenomena in high-temperature coal gasification were studied, using a horizontal pulverized coal gasifier with a pre-combustor. The deposition experiment was carried out by inserting a water-cooled tube into the gasifier. The deposition phenomena were quantitatively and visually discussed by analyzing ash particles in the raw coal, the reacting particles and the deposition layer by means of CCSEM. As a result, particle diameter and chemical composition of ash particles rapidly change in the initial stage. The included mineral particles tend to agglomerate inside a coal particle during volatile matter combustion.

DOI： 10.20550/jiesekitanronbun.38.0_195

K-2223 都市ゴミ固形燃料の燃焼および脱塩特性(S29-1 地域エネルギーシステムにおける小型発電技術の動向(1))(S29 地域エネルギーシステムにおける小型発電技術の動向)

樋口篤志, 柳野秀朗, 成瀬一郎

年次大会講演論文集 1 巻 ( 0 ) 頁： 583 - 584 2001年

掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本機械学会

Fundamentals on de-chlorination characteristics with Refuse Derived Fuels (RDF), which had been developed to utilize as source for thermal energy, were studied by using both the practical RDF and the simulated RDF. For the simulated RDF polyvinyl chloride (PVC) or NaCl was added as a chlorine source. In the experiment single pellet of RDF was burned in an electrically heated batch furnace. The de-chlorination efficiency was calculated by means of analysis of Cl in the residue after combustion. The efficiency obtained was compared with that obtained by chemical equilibrium calculation. As a result, HCl is almost emitted during the volatile matter combustion. The de-chlorination characteristics for PVC addition differ from that for NaCl addition. For the RDF adding the de-chlorination reaction depends on the furnace temperature, and the optimum temperature is about 923 K. The phenomena are caused by the following reasons. At low temperature the de-chlorination rate is slower than the evolution rate of HCl gas. At high temperature, on the other hand, CaCl_2, which is produced by the de-chlorination reaction, is decomposed during the char combustion. For the NaCl addition, Ca compound does not absorb Cl in NaCl. According to chemical equilibrium calculation, NaCl is evaporated as a form of NaCl and Na_2Cl_2 vapors. HCl is not produced either.

DOI： 10.1299/jsmemecjo.II.01.1.0_583

K-2233 石炭・バイオマスの混焼特性(S29-3 地域エネルギーシステムにおける小型発電技術の動向(3))(S29 地域エネルギーシステムにおける小型発電技術の動向)

森下桂樹, 成瀬一郎

年次大会講演論文集 1 巻 ( 0 ) 頁： 603 - 604 2001年

掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本機械学会

In order to utilize low-grade coals efficiently and cleanly, co-combustion of coal with biomass was proposed since the biomass had the function to enhance the overall reaction characteristics. In this study, co-combustion of coal with biomass was tested by an electrically heated drop tube furnace to elucidate effect of the biomass on the combustion characteristics of coal. As a result, the biomass can enhance ignition of the low-grade coal during the co-combustion. Formation of NO under the co-combustion condition tended to relatively increase.

DOI： 10.1299/jsmemecjo.II.01.1.0_603

Experimental Study on Combustion and Pollutant Control of Biobriquette

Lu G.

Energy and Fuels 14 巻 ( 6 ) 頁： 1133 - 1138 2000年11月