-
原稿種別: 表紙
p.
Cover1-
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
-
原稿種別: 付録等
p.
App1-
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
-
原稿種別: 付録等
p.
App2-
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
-
原稿種別: 目次
p.
Toc1-
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
-
赤澤 威
原稿種別: 本文
p.
1-2
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
-
小谷野 耕二, 鷹觜 利公, 斎藤 郁夫
原稿種別: 本文
p.
3-4
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
"HyperCoal" (ashless coal) was produced from coals of various ranks by thermal extraction at 360℃ using 1-methyl naphthalene (1-MN). The extraction yield was investigated using multiple regression analysis with values of ultimate analysis of coals. Coal extractability rose with a decrease of oxygen % and increase of nitrogen % and sulfur %. The aggregation types by polarity such as hydrogen bonds that nonpolar solvent (1-MN) cannot release, can be dominant factors to determine the extraction yield.
抄録全体を表示
-
崎元 尚土, 島田 荘平, 安田 肇, 海保 守, 山田 理
原稿種別: 本文
p.
5-6
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
CO_2 isosteric heats of adsorption on coal (qd) were measured by two methods. One was measured directly by using volumetric method and a calorimeter. The other was estimated by Clausius-Clapeyron equation. For Clausius-Clapeyron equation, CO_2 adsorption amount was measured by gravimetric method. Measured and estimated CO_2 qd were compared and the CO_2 adsorption mechanism was considered.
抄録全体を表示
-
齋藤 公児, 金橋 康二, 大窪 貴洋
原稿種別: 本文
p.
7-8
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Chemical structure analysis of montmorillonite which is one of coal ashes using solid state NMR is very difficult because of quadrupolar interation. Recent MQMAS method and multi-nuclear apporach using high magnetic fields are able to find new chemical sites of Al and Na ion's behaviour, as quadrupolar interation is removed. Solid state NMR is very powerful and useful to clarify the chemical structure of montmorillonite.
抄録全体を表示
-
飯野 雅
原稿種別: 本文
p.
9-10
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Carbon disulfide (CS_2)/N-methyl-2-pyrrolidinone (NMP) mixed solvent (1/1 by volume) was found to be very powerful solvent for room temperature extractions of bituminous coals about 20 years ago in our laboratory. However, the reason why the mixed solvent gave high extraction yields is not still clear. The extraction mechanisms ever proposed are reviewed
抄録全体を表示
-
相田 哲夫, 大西 一洋, 沖原 康二
原稿種別: 本文
p.
11-12
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
In order to characterize cross-linked macromolecular network structure of coal a series of experiment using synthetic model polymer has been conducted based on their dielectric properties., and it was found that the temperature and frequency dependence of the capacitance gave us useful information about the such secondary bonding interaction between the macromolecular network structure of coal as hydrogen bonding, charge-transfer bonding and van der Waals bonding.
抄録全体を表示
-
蘆田 隆一, 牧野 祥啓, 森本 正人, 中川 浩行, 三浦 孝一
原稿種別: 本文
p.
13-14
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
We have previously presented a new coal extraction method which brings coal into contact with a flowing stream of non-polar solvent such as tetralin or 1-methylnaphthalene under 10MPa at 350℃. Furthermore, we presented a new coal fractionation method based on the extraction method and showed that bituminous coals could be separated into several fractions having different molecular mass without decomposing coal. When the fractionation method was applied to the fractionation of brown coal, however, properties of the fractions obtained were almost the same. This suggested that thermal extraction does not work for the fractionation of brown coal. In this study we present a solvent fractionation method instead of the thermal fractionation as a way to fractionate brown coal extract into fractions having different properties. Solid extracts prepared through hydrothermal extraction at 300 and 350℃ were separated by the solvent fractionation using n-hexane, cyclohexane, toluene, and methanol. Detailed characterization of the fractions obtained showed that the brown coal extract could successfully be separated into fractions having significantly different chemical structures.
抄録全体を表示
-
森本 正人, 中川 浩行, 三浦 孝一
原稿種別: 本文
p.
15-16
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
We have examined the validity of our new brown coal conversion process consisting of hydrothermal extraction and catalytic hydrothermal gasification both of which are operated at 300 to 350℃. Six kinds of low rank coals, Loy Yang (LY), Wara (WR), Berau Binungan (BB), Mukah Balingian (MB), Thai Lignite (TL), and Philippine Lignite (PL), were found to be extracted by 54, 48, 42, 40, 44 and 58 wt%, respectively, by water at 350℃. At 350℃, 97% of the LY extract was successfully gasified by our new Ni supported carbon catalyst, yielding CH_4 and H_2 in high yields. Through the hydrothermal extraction and the hydrothermal gasification, LY was converted into 53% of upgraded coal, 22% of CH_4, and 23% of CO_2 on carbon basis. In addition, 4.4mol of hydrogen was simultaneously generated from LY containing 100mol of carbon. This process transferred 95% of energy involved in the raw coal to the products at 350℃, showing its high thermal efficiency.
抄録全体を表示
-
中島 常憲, 葛巻 健, 長谷川 博之, 高梨 啓和, 大木 章
原稿種別: 本文
p.
17-18
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
When two lignites and a sub-bituminous coal were subjected to hydrothermal treatment (HTT), the leaching of organic matters from coal was evaluated by total organic carbon (TOC). The degree of TOC in the HTT eluent was greatly increased as the HTT temperature was raised. The HTT eluents from these low-rank coals were assessed in terms of Ames Salmonella mutagenicity assay and acute toxicity test for D. magna and O. latipes. The eluents from the HTT eluent did not show any notable mutagenicity. However, an appreciable degree of mutagenicity after chlorination was observed for the HTT eluents. The eluents from HTT indicated a considerable acute toxicity for D. magna and O. latipes.
抄録全体を表示
-
斎藤 日向, 王 青躍, 桑原 未青
原稿種別: 本文
p.
19-20
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
In this study, a vegetable oil agglomeration process was performed for coal combustible matter recovery from Chinese waste fine coal as compared with the conventional mineral oil agglomeration. Consequently, the coal agglomerated product of high combustibility containing lower ash and lower inorganic sulfur contents was separated from its original waste fine coal. Moreover, it was found that the higher combustible matter recovery by the vegetable oil agglomeration using such as soybean oil and colza oil can be achieved comparing with the mineral oil agglomeration. The availability of the vegetable oil agglomeration as a coal cleaning process for the combustible matter recovery from its original waste fine coal was also suggested.
抄録全体を表示
-
蔡 会武, 杜 美利, 二宮 善彦
原稿種別: 本文
p.
21-22
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Coal samples were obtained from Hengshan county of Shaanxi province, China. The coals are characterized by high sulfur, high oxygen, low carbon and low hydrogen. The coal sample with the highest sulfur content (from Caogou #1 pit) was selected for floating and sinking test of screening in laboratory. The sulfur distribution in different particle grades and in different density grades was then decided.
抄録全体を表示
-
王 群英, 張 立安, 伊藤 智仁, 奥平 篤史, 佐藤 厚, 二宮 善彦, 山下 亨
原稿種別: 本文
p.
23-24
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Emission properties of fine particulate matter, namely PM_<2.5> for the particle size smaller than 2.5μm, were studied during co-firing experiments of two coals. Co-firing tests were conducted at 1200℃ and 1450℃ in a lab-scale drop tube furnace. The effect of Ca-based compounds on the formation of PM_<1+> (ranging from 1μm to 2.5μm) and PM_1, (≦1μm) has been investigated. At 1450℃, higher content of Ca results in lower emission of PM_<1+>, but for PM_1, the trend is reverse. While at 1200℃, no relationship has been observed between PM_<1+>, PM_1, and the content of Ca in mixing coal samples.
抄録全体を表示
-
岡田 章吾, 中島 常憲, 高梨 啓和, 大木 章
原稿種別: 本文
p.
25-26
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Six coals were treated by the biodesulfurization with Thiobacillus ferrooxidans, and the removal of inorganic sulfur from coal and the chemical structure change of biodesulfurized coal were investigated. The % removal of inorganic sulfur varied from 37-88% depending upon the increasing of pH in the medium and the leaching of Ca from coal during the biodesulfurization. When the chemical structure change of biodesulfurized coal was measured by FT-IR, it was found that elemental sulfur generated on the surface of the biodesulfurized coal treated in the high medium pH. From the XPS measurement, the reduced sulfur compounds were removed in the PT coal, and the oxidized form sulfur was removed in the SS030 coal.
抄録全体を表示
-
望月 友貴, 菅原 勝康, 菅原 拓男
原稿種別: 本文
p.
27-28
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
To develop an efficient cleaning process of hydrocarbon resources, ionic liquids were used for selective removal of thiophene from a model fuel. The desulfurization extent of dibenzothiophene increases linearly with increasing of total carbon number of alkyl group with ionic liquids. 1-Butyl-3-ethyl-imidazolium ethyl sulfate ( BEIMEtSO_4) showed the highest removal extent of thiophene in six kinds of ionic liquid at room temperature.
抄録全体を表示
-
秋山 和子, 蟻川 芳子
原稿種別: 本文
p.
29-30
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
The simultaneous determination of thirty four elements in coal samples was investigated systematically by using inductively coupled plasma mass spectrometry (ICP-MS) after the pretreatment of samples by the microwave digestion with HNO_3・H_2O_2. NIST SRM 1632b and SRM 1632c standard coal samples were used for the evaluation of the determined values throughout this study. It was confirmed that the decomposition residue after the digestion of sample with HNO_3・H_2O_2 did not bring serious effects on the determination of multi elements except Al, Rb, Sn and Sb in coal samples. The recoveries of Al and Rb were improved by the decomposition with HNO_3・H_2O_2/HBF_4. But the determined values of Sn and Sb were still poor. The microwave digestion with HNO_3・H_2O_2 was enough for the simultaneous determination of thirty elements.
抄録全体を表示
-
山口 智行, 神原 信志, 守富 寛
原稿種別: 本文
p.
31-32
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Trace element distributions in fly ash particles from a pulverized coal fired plant were investigated for three coals to elucidate the partitioning mechanisms in combustion processes. To determine Hg concentration each particle size, the fly ashes were sieved in seven classifications by acoustic sieves. In this study, advanced techniques, direct determination by GF-AAS, is employed to solve technical problems in the current analysis methods. Characteristics of GF-AAS are investigated carefully. It is found that mercury concentration in the sieved fly ash is increased with increasing the average particle diameter. Since large size particles contain much unburned carbon, relation between unburned carbon and Hg concentration had good correlation for three coal types.
抄録全体を表示
-
坪内 直人, 渋谷 薫, 林 英和, 大塚 康夫
原稿種別: 本文
p.
33-34
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Leaching behavior of boron (B) and fluorine (F) from a coal fly ash sample has been investigated with a batch-type quartz reactor under the conditions of 25℃, pH 1.5-9.0 and a liquid to solid ratio of 100ml/g. More than 70% of B in the ash ample is leached at the beginning stage of experiment, and the leaching extent is higher at a lower pH condition. The leaching of F is more dependent on pH, and the leaching degree at a steady state increases in the sequence of pH9.0(32%)<pH5.6(36%)<pH1.5(74%)<pH3.0(80%). Influential factors controlling the leachability of these elements are discussed.
抄録全体を表示
-
Lian Zhang, Toshimasa Takanohashi, Ikuo Saito
原稿種別: 本文
p.
35-36
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Two Argonne premium coals, bituminous Illinois No.6 (IL) and sub-bituminous Wyodak (WY), were extracted by 1-methynaphthalene (1-MN) to produce the clean fuel, namely HyperCoal (HPC). The mineral evolution upon coal extraction and the occurrence of inorganic constituents in HPC were investigated. At 360℃, the majority of inherent coal ash (>99wt%) remains in the by-product (insoluble part). The HPC contains 0.13wt% and 0.16wt% ash in the case of IL and WY coal, respectively. Fe is the most prevalent, accounting for 436.2ppm and 631.4ppm in the HPC of IL and WY, respectively. Its presence in the HPC of IL was likely contributed from two routes, i.e., release of Fe-containing submicron mineral particles in ferritin in coal matrix and fragmentation of coarse compounds like pyrite (FeS_2). On the other hand, in the case of WY HPC, in addition to the above-listed two sources, around 18% of total Fe was contributed from its ion-exchangeable constituents.
抄録全体を表示
-
渡邉 玄, 義家 亮, 上宮 成之, 西村 誠, 古谷 敦志, 奥山 憲幸, 小松 信行
原稿種別: 本文
p.
37-38
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
An innovative process to produce ash-free coal has been developed based on the coal liquefaction with organic solvent extraction. During the manufacturing process for this ash-free coal called hyper coal (HPC), 70wt% (daf basis) of raw coal can be extracted in 1-methylnaphthalen as an organic solvent at 633K, reducing the ash and alkali contents to less than 100ppm and 0.5ppm, respectively. On the other hand, it's also important to pay attention to the behaviors of trace elements (arsenic, boron, cadmium, lead, mercury, selenium) during the process for the ash-free coal, because such toxic elements emission to the environment should be controlled. In particular, emission of mercury from a coal combustion process to the atmosphere has been becoming one of the most serious problems in the coal use all over the world. Therefore, in the present study, various intermediate products such as coal-organic solvent slurry were sampled from the HPC manufacturing process, and analyzed for mercury contents to investigate the mass balance and the behavior of mercury in the process.
抄録全体を表示
-
下山 巧太, 中島 常憲, 高梨 啓和, 大木 章
原稿種別: 本文
p.
39-40
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Seven powdery coals (four SS coals and three Argonne premium coals) were subjected to pyrolysis at 300℃ under a flow of nitrogen, and the release of Hg, Se, and As from coal was examined. The % release of Hg was greatly varied (20-75%) depending upon the type of coals. But, the % release of Se and As was not so varied. In order to remove pyrite from coal, powdery coals were treated with 0.5M HNO_3 solution at 80℃. The resulting HNO_3-treated coals were also subjected to 300℃-pyrolysis, and the release of Hg was evaluated. Even for coals, which gave low % Hg release when the raw coal was pyrolyzed, nearly complete release of Hg was attained when the treated coal was pyrolyzed. The release behavior of Hg was discussed on the basis of the mode of occurrence of Hg in coal.
抄録全体を表示
-
上野 俊一朗, 鎌田 博之, 高野 健司, 田村 雅人, 秋保 広幸, 山口 哲正, 伊藤 茂男
原稿種別: 本文
p.
41-42
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
A method to capture gaseous metallic-mercury (Hg^0) in wet-type flue gas desulfurization unit using chemical reagents has been developed. By a series of screening-tests, NaClO and I_2 have been chosen as the most effective reagents to capture Hg^0. Both NaCIO and I_2 were demonstrated to capture Hg^0 sufficiently under the wet-type limestone-gypsum process by the bench-scale spray tower. Since a decent amount of NaClO and I_2 was found to be consumed by the oxidation of SO_2, the amount required to caputre Hg^0 must be optimized according to the SO_2 concentration in flue gas.
抄録全体を表示
-
尾崎 正樹, 大矢 直樹, 呉 聖姫, 笹岡 英司, Md. Azhar UDDIN
原稿種別: 本文
p.
43-44
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Hg^0 vapor is one of toxic substances derived from gasification and combustion of coal. Previously we have suggested that Hg^0 vapor can be removed as HgS (s) over iron based sorbents in the presence of H_2S. In this study, the Hg^0 removal performance in coal derived fuel gas using laboratory made Fe_2O_3 and FeS_2 (reagent and ore) investigated in the presence of HCl. For Fe_2O_3, the Hg^0 removal activity decreased in the presence of HCl and the activity dropped with the increase of HCl concentration. Reagent FeS_2 showed high activity for Hg^0 removal, while Hg^0 removal activity of ore FeS_2 was low. However, kneading of ore FeS_2 powder with H_2O resulted in reduction of bulk density and the activity was enhanced. The effect of reaction temperature in the range of 60〜150℃ using kneading FeS_2 (ore) was investigated. The activity tended to be higher at lower temperature. The presence of HCl in the fuel gas has no effect on the Hg^0 removal activity of FeS_2.
抄録全体を表示
-
山地 悠毅, 山田 徹, 呉 聖姫, 笹岡 英司, Md.Azhar UDDIN
原稿種別: 本文
p.
45-46
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Mercury vapor from coal combustion flue gas affects the earth's environment significantly because of its toxicity and high volatility. Removal of mercury vapor using activated carbons (ACs) is an effective technique, however safe treatment of the used ACs after Hg removal is very difficult. In this research, we use H_2S which doesn't exist in coal combustion flue gas, to capture Hg in the form of low toxic mercury sulfide using ACs. Experiments were carried out with the gas compositions similar to coal combustion flue gas. The effect of HCl in the coal combustion flue gas on Hg removal was investigated in details. In the absence of HCl, removal of Hg increased with increasing concentration of H_2S, indicating that Hg was adsorbed in the form of mercury sulfide over ACs. In the presence of HCl, the effect of HCl was much higher than that of H_2S on Hg removal. However, a positive effect of H_2S on Hg removal was also observed at low HCl concentration. These results suggest that in the presence of both H_2S and HCl, some part of Hg may be adsorbed in the form of mercury sulfide.
抄録全体を表示
-
長沼 宏, 相沢 威一郎, 成瀬 一郎, 河合 隆之, 伊藤 正, 狩野 勝広
原稿種別: 本文
p.
47-48
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
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, surface treatment technology of the tube to control the ash adhesion is tested in this study. Time change of an adhesive bond of coal ash on the metal, which is important to understand the fouling mechanism, is measured. The metal and ash composition at the interface is also observed, and the effect of the interfacial reactions on the change of the adhesive bond is discussed.
抄録全体を表示
-
山下 亨, 二宮 善彦
原稿種別: 本文
p.
49-50
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
In order to reduce ash disposal cost, utilization of low ash sub-bituminous coal is expanding recently. While on the other hand sub-bituminous coal is superior in combustibility, slagging troubles are concerned because the ash fusion temperature is low. It is very important to control coal properties by setting optimum blending condition for avoiding these troubles. This study focuses on the improvement of slagging property by investigating coal blending condition. Ash adhesion behavior at prove surface installed in pulverized coal combustion test furnace was observed. Hot-stage test was also carried out in order to observe sintering behavior of adhered ash layer.
抄録全体を表示
-
寺田 隆彦, 仁木 豊明, 大中 昭, 秋本 明光
原稿種別: 本文
p.
51-52
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
As a part of basic study on In-situ Ash Modification to convert fly ash into cementitious material in pulverized coal fired boiler, we carried out trial incineration in a drop-flow tube furnace. The mixture of powder coal and micro-ground calcium compound was incinerated under firing conditions of 1450℃×2sec, and as a result we got a fly ash which contains free CaO not more than 5% and is assumed to be composed of slag like substances accompanied with cement minerals.
抄録全体を表示
-
烏 暁江, 小林 信介, 朴 桂林, 板谷 義紀, 森 滋勝
原稿種別: 本文
p.
53-54
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
In China, promotion of a Clean Coal Technology (CCT) business becomes urgent to deal with stringency of the energy supply such as electricity or liquid fuel and intensification of an environment problem with raped economic development. The spread of CCT based on coal gasification is carried out flourishingly because of it's high efficiency and Low atmospheric pollutants emission. China has abundant coal resources with high ash fusion temperature (flow temperature>1400℃) and the high ash fusion temperature coal is account for about 55% of annual output and 57% of retain coal reserves. Then it will meet some slagging problems when using slagging gasifiers which exist in IGCC with high ash fusion temperature coal. Therefore a new coal gasification process to fit Chinese high ash fusion temperature coal was discussed in this paper.
抄録全体を表示
-
ナランゲレル ジャンチック, 杉本 義一
原稿種別: 本文
p.
55-56
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
In this study, nitrogen compounds were selectively removed from light gas oil fraction of coal liquid by solid extraction using CuCl_2-2H_2O. The extracted oils were hydrotreated in a batch-type autoclave with commercial NiMo/Al_2O_3 catalyst at 350℃ for 2-4h under H_2 initial pressure of 5MPa. The separation of nitrogen compounds from coal liquid greatly enhanced its hydrodenitrogenation rate and improved the quality of products.
抄録全体を表示
-
相原 洋一, 齋藤 公児, 藤岡 裕二, 杉本 義一
原稿種別: 本文
p.
57-58
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
To inhibit the coking reaction is one of the most important points of stable operation in the heavy oil hydrocracking. The reaction was performed using the Kuwaiti AR with 1.0wt% of fine grinded NiMo/Active carbon catalyst under 440-460℃, 8MPa and the ratio of hydrogen/oil 1000Nml/ml, and the properties of toluene insoluble (TI) fraction of the product were investigated. The H/C ratio of the TI fraction decreased with increasing the reaction temperature and the TI yield increased with the number of the catalyst reuse.
抄録全体を表示
-
木下 睦, 榎本 兵治, 金 放鳴, 中村 常太, 守谷 武彦
原稿種別: 本文
p.
59-60
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Studies on the hydrothermal visbreaking of super heavy oil with alkali in the range of supercritical water have been carried out for developing a new on-site visbreaking technology combined with SAGD process. In this process, neither hydrogen gas nor catalyst is used, and neither CO_2 nor H_2S is issued. A combined system with SAGD can utilize the wastewater as steam for injection. Results of fundamental research have been published and presented at 7th UNITAR conference. Fundamental and important data for a new process were obtained. However, it was found that a heavier part of bitumen accumulated at the bottom of the vertical reactor, and it changed into cokes on the bottom. Therefore, coke accounted for more than 8% of the feed. In the present study, coke was suppressed to 0.2% by continuously discharging the accumulated heavier bitumen from the bottom of the reactor, amount of which was ca. 14% of the feed just enough to use as fuel for this combined system. Quality of produced oil is equivalent to Arabian medium crude.
抄録全体を表示
-
杉本 義一, ナランゲレル ジャンチック, 高津 淑人
原稿種別: 本文
p.
61-62
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
To convert heavy oils into clean motor fuels in a high yield, their slurry phase hydrocracking were performed over NiMo/Carbon Black catalyst under relatively low hydrogen pressure (8-10MPa). The reaction equipment contains three small-size reactors of which temperatures increased stepwisely. Maya atomospheric residue and Middle East vacuum residue were successfully converted into light oils, but the S,N and asphaltene contents of the product oils were still so high that they should be upgraded to introduce them to conventional hydrotreating plants.
抄録全体を表示
-
坂口 友昭, 赤木 ゆきえ, 坂輪 光弘, 天野 一
原稿種別: 本文
p.
63-64
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
The relation between a pore size of charcoal and the adsorption ability of formaldehyde has been clarified. There was a difference in the adsorption ability when the carbonizing temperature was changed, because a pore size of charcoal was changed. Secondly the relation between toluene gas adsorption ability and a minute pore size was studied.
抄録全体を表示
-
吉松 知哉, 赤木 ゆきえ, 坂輪 光弘, 天野 一
原稿種別: 本文
p.
65-66
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Recently, effective use of unused wood resources such as thinner timber and scrap wood is requested. On other hand, the formaldehyde contained in materials of a furniture is considered as the cause of sick house syndrome. Therefore, Sumiya Ltd. was developed a carbon board for houses. This carbon board adsorbs formaldehyde. If we develop a fireproof board for houses, this board can be used for public houses. The carbon board mixed with lime is developed of a fireproof board. This mixed board is examined the absorption of formaldehyde.
抄録全体を表示
-
李 留云, 森下 佳代子, 宝田 恭之
原稿種別: 本文
p.
67-68
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Two kinds of biomass samples, chicken feces compost and cypress, were employed for pyrolysis in our study. Experiments were carried out in a two-stage fixed-bed reactor. The biomass sample was pyrolyzed in the first stage, and the biomass tar from biomass pyrolysis flowed into another stage with the feed gas for catalytic decomposition and steam-reforming. A Ni-loading brown coal and a commercial catalyst Ni/Al_2O_3 were used as catalysts. Both of the catalysts promoted the biomass tar complete conversion into gas products even at a low reaction temperature of 500℃. Comparing with the case of pyrolysis, yields of hydrogen and carbon monoxide gases showed a remarkable increase in the steam-reforming reactions.
抄録全体を表示
-
Xiulan Hu, 花岡 寿明, 坂西 欣也, 品川 拓也, 松井 聰, 多田 光宏, 岩崎 敏彦
原稿種別: 本文
p.
69-70
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Dry gas cleaning was performed using four different commercial activated carbons at 150 to 300℃. Phenol, naphthalene and 1-methylnaphthalene were employed as tar model compounds produced from biomass gasification. At 300℃, such light tar model compounds were difficult to be removed. At 150℃, 1-methylnaphthalene was effectively removed, and the breakthrough curve and adsorption capacity (25.3 to 32.6g-tar/100g-AC) were largely dependent on the types of activated carbons. It is revealed that the larger specific surface area and the smaller particle size of activated carbon were favorable for the effective removal of light tar compounds.
抄録全体を表示
-
田村 憲司, 古谷 信尊, 眞邊 照展, 坂輪 光弘, 天野 一, 河野 敏夫
原稿種別: 本文
p.
71-72
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
In our study charcoal board mixed with calcium hydroxide in developed for a fireproof board. This fireproof board is produced by press method. But the press method is expensive. Therefore, we are trying to produce the board by a cast method. The optimum conditions for producing the board by a cast method are examined.
抄録全体を表示
-
行本 正雄, 伊藤 宏章, 坂本 健太郎, 武田 邦彦
原稿種別: 本文
p.
73-74
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
To realize the biomass energy systems which is characterized as one of the pillars of the sustainable society is great significant, because of the multiple advantageous effects, such as global warming countermeasures, rising self-sufficiency ratio in the energy supply, national land conservation, regional development and biomass industry structural improvement. In this paper, we designed models of gasification, carbonization and pelletization using biomass for a rural area in Aichi, Mie, Shizuoka, Gifu and Nagano prefecture and evaluated the system of CO_2 emission and economics. The analysis shows that the model using both the thinning residues and the mill ends can be brought about 100 ton per day in Nagoya area. The gasification model reduces CO_2 emission in comparison with these other models.
抄録全体を表示
-
岩井 孝史, 糸林 康行, 酒井 寛人, 眞邊 照展, 坂輪 光弘
原稿種別: 本文
p.
75-76
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
The water purification system with charcoal and concrete (porous concrete) is developed. This system uses the charcoal manufactured from the wood scrap. The charcoal after purification in this system is used as a fuel for carbonization of wood scrap. A decrease of COD, PO_4 and NH_4 was measured by using a sham waterway to evaluate the purification efficiency of this system. From this result, the exchange time of charcoal required to use actually for a drainage canal was examined.
抄録全体を表示
-
井古田 亘佑, 王 青躍
原稿種別: 本文
p.
77-78
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
In this study, it was approached for investigation of the char and ash contents influencing on tar conversion in gasification for coal-biomass briquette (BB). The phenol resin charcoal was made as a model component for carbon in char, toluene was applied as a model compound of tar, and the metal oxide such as CaO was used as a model compound of the ash content. The char or ash samples were installed and loaded in the fixed bed stainless steel tube reactor, and then toluene was circulated. As the result, the behavior of the char and ash contents on tar conversion in the heterogeneous reaction was evaluated, and the decomposition products of the tar by the char and ash contents was investigated and analyzed.
抄録全体を表示
-
則永 行庸, 林 潤一郎
原稿種別: 本文
p.
79-80
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Homogeneous combustion of volatiles from seventeen coals were numerically simulated with detailed chemical kinetics. The composition of coal volatile was estimated based on the experimental results reported by Xu and Tomital who pyrolyzed seventeen coals in a Curie point pyrolyzer and quantitatively analyzed fifteen pyrolysates by a gas chromatography. A reaction mechanism including 257 chemical species and 2216 reactions developed by Richter et al. and a software package computing time dependent homogeneous reaction system were employed for the numerical simulations. When mixed coal and air at a stoichiometric ratio and assumed the molecular mass of tar produced in the coal pyrolysis to be 350, the coal volatiles account for only a few percent of gas phase in volume at 1037K. The simulation was performed at an initial temperature of 1037K under isobaric (1bar) and adiabatic conditions. Chemical compositions of coal volatiles influence the ignition delay time and adiabatic temperature, varying 1〜25 ms and 1130 to 1400K, respectively. Mixing ratio of coal and air is also an important factor for the combustion characteristics. Sensitivity analysis provided insight into the crucial reaction steps in the coal combustion which are radical producing reactions such as H+O_2→OH+H enhancing combustion and radical quenching reactions such as H+O_2→HO_2 hindering combustion.
抄録全体を表示
-
針金 祐一, 神原 信志, 守富 寛, 西山 明雄
原稿種別: 本文
p.
81-82
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Advanced process simulator for pulverized coal fired power station has been developed to predict coal quality impacts on economical performance. Process simulation logics of a 350MW coal fired power plant are built on ASPEN PLUS, and their process characteristics are calculated. In this study, effects of coal quality and biomass blending on performance of power plants were studied. Calculation results of power generation efficiency for coals show good agreement with actual plant data. It is found that biomass co-combustion is decreased power generation efficiency.
抄録全体を表示
-
Slamet Raharjo, Ichiro Naruse
原稿種別: 本文
p.
83-84
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
-
小宮 尚, 森本 達也, 落合 哲也, 小田 廣和
原稿種別: 本文
p.
85-86
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
This study aimed to clarify the behavior of closed pores in coal chars during pyrolysis and gasification. Closed pore volume of chars was calculated in terms of helium density and ash fraction. Closed pore volume of caking coal chars was larger than that of non-caking coal chars. The coking probably influences the generation of closed pores at pyrolysis. Also, closed pore volume rapidly decreased at an initial stage of char gasification for both coal and model samples. As specific surface area also increased at an initial stage of char gasification, it might be indicated that the opening of closed pore is a factor of increasing of specific surface area at an initial reaction.
抄録全体を表示
-
Atul Sharma, 鷹觜 利公, 斎藤 郁夫, 森下 佳代子, 宝田 恭之
原稿種別: 本文
p.
87-88
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
HyperCoal is a solvent extracted coal with ash content <0.1%. Catalytic steam gasification of HyperCoal was carried out at 650-775℃ for production of H_2 and synthesis gas. The gasification results showed nearly 4 times higher gasification rate than raw coal. Deactivation of the catalyst was not observed even after 6 times recycling of the same catalyst amount. H_2/CO ratio was reduced from 10.5 to 1.4 by changing the partial pressure of steam. The preliminary results showed that HyperCoal, an ash less coal, could be a potential hydrocarbon resource for H_2 and synthesis gas production by catalytic steam gasification process.
抄録全体を表示
-
木塚 崇博, Bazardorj Bayarsaikhan, 園山 希, 細貝 聡, 嶋田 太平, 則永 行庸, 林 潤一郎, 千葉 忠俊, ...
原稿種別: 本文
p.
89-90
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Steam gasification of a brown coal was performed in an atmospheric bubbling fluidized-bed reactor with continuous feeding of the coal. The gasification converted no more than 28-71%-C of the nascent char at 1120-1223K. The char recovered from the fluidized bed was, nonetheless, steam-gasified completely in another reactor, i.e., in the absence of volatiles from the pyrolysis. Atmosphere created in the fluidized bed thus prevented the char gasification from taking place beyond upper-limit conversion. In the absence of volatiles, nascent char underwent gasification catalyzed by inherent metallic species and non-catalytic gasification in parallel. The non-catalytic gasification was greatly decelerated by the presence of H_2 in the gas phase due to a well-known inhibition mechanism. The inhibition was, however, not so strong as to terminate the gasification. It was rather suggested that much more H-laden carbon was formed through chemisorption of hydrogen from the volatiles in the gas phase, which resulted in prevention of the non-catalytic gasification. In the fluidized bed, char was mainly converted by the catalytic gasification, while the conversion was limited due to deactivation of metallic species within the char matrix and their release from the char.
抄録全体を表示
-
猪瀬 悌暢, 山田 哲夫, 橋本 晴美, 鈴木 勉
原稿種別: 本文
p.
91-92
発行日: 2006/10/12
公開日: 2017/03/22
会議録・要旨集
フリー
Five chars prepared from brain-c standard coals and their demineralized coals were gasified in steam at 0.2〜1MPa up to 1,223K in a fixedbed to examine the influence of coal rank, and pressure or temperature dependence of reaction rate. Large rate constant at 50% conversion used as a gasification index was obtained in lower-rank coal. The diffrence in the rate constant among the demineralizied coal was very small. On the produced gas composition, hydrogen and carbon dioxide became a main component in lower-rank coal and pressurized gasification.
抄録全体を表示