学会等発表 - 加藤 貴宏
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Change of sulfur forms and desulfurization behavior in liquid phase oxidation of coals
Takahiro Kato, Yuki Nagai, Hirokazu, Okawa, Katsuyasu Sugawara
The 2nd Australia-Japan Symposium on Carbon Resource Utilization (Brisbane, Australia ) 2018年04月 - 2018年04月
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Recovery of rare metals from spent denitrification catalyst in coal-fired power plants
Kosuke Sakusabe , Takahiro Kato , Hirokazu Okawa and Katsuyasu Sugawara
The 2nd Australia-Japan Symposium on Carbon Resource Utilization (Brisbane, Australia) 2018年04月 - 2018年04月
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酸素燃焼排CO2ガスがCO2注入井に与える影響
田中恒祐，大川浩一，橋本敬一郎，加藤貴宏，菅原勝康
資源・素材学会 平成30年度秋季大会 (東京) 2018年03月 - 2018年03月 資源・素材学会
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炭素還元による脱硝触媒からの砒素の除去
加藤貴宏,佐藤起子,大川浩一,菅原勝康
第54回 石炭科学会議 (秋田市) 2017年10月 - 2017年10月 日本エネルギー学会
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使用済み脱硝触媒からのレアメタルの分離回収
作左部皓輔,加藤貴宏,大川浩一,菅原勝康
第54回 石炭科学会議 (秋田市) 2017年10月 - 2017年10月 日本エネルギー学会
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Characteristics and Self-heating Behavior of Moatize Coals, Moatize Coal Basin, Mozambique
Dorcas L. E. UACIQUETE, Takahiro KATO, Hirokazu OKAWA, Katsuyasu SUGAWARA
第54回 石炭科学会議 (秋田市) 2017年10月 - 2017年10月 日本エネルギー学会
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オイルサンドからのビチューメン回収過程における
赤沢伸幸,大川浩一,ワン・モハマド・イクワン・ビン・ワン・カマル,加藤貴宏,菅原勝康
第54回 石炭科学会議 (秋田市) 2017年10月 - 2017年10月 日本エネルギー学会
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過酸化水素と無水酢酸を用いたハイパーコールの酸化脱硫
小野寺凱,加藤貴宏,大川浩一,菅原勝康
第54回 石炭科学会議 (秋田市) 2017年10月 - 2017年10月 日本エネルギー学会
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石炭の溶剤抽出における硫黄の分配挙動
田村真実,加藤貴宏,大川浩一,菅原勝康
第54回 石炭科学会議 (秋田市) 2017年10月 - 2017年10月 日本エネルギー学会
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E-wasteに含まれる貴金属の選択的分離プロセスの開発
作左部皓輔,加藤 貴宏,大川 浩一,菅原 勝康
化学工学会 第49回秋季大会 2017年09月 - 2017年09月
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Recovery of Gold and Silver from Spent Printed Circuit Board by Chlorination
作左部皓輔,加藤貴宏,大川浩一,菅原勝康
平成29年度 化学系学協会東北大会 (岩手大学理工学部) 2017年09月 - 2017年09月
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Decomposition Kinetics of Formmaldehyde by UV irradiation with Hydrogen Peroxide
菅原悠人,加藤貴宏,大川浩一,菅原勝康
平成29年度 化学系学協会東北大会 (岩手大学理工学部) 2017年09月 - 2017年09月
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紫外線と過酸化水素によるホルムアデヒドの分解
菅原悠人,加藤貴宏,大川浩一,菅原勝康
第19回先端研究発表会 (東北大学工学部) 2017年05月 - 2017年05月 化学工学会東北支部・宮城化学工学懇話会
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No.1-13 オイルサンドからのビチューメン回収過程における脱硫処理の検討
赤沢 伸幸, 大川 浩一, Kamal Wan Mohamad Ikhwan Bin Wan, 加藤 貴宏, 菅原 勝康
石炭科学会議発表論文集 2017年 - 2017年 一般社団法人 日本エネルギー学会
<p>Desulfurization of bitumen was performed by combination of oxidative desulfurization (ODS) and ultrasound irradiation. Tetrahydrofuran (THF) was employed as solvent to emulsify the bitumen and improve the desulfurization ratio. In the result, the desulfurization ratio reached to 82.7% (ion-exchange water: 52%). We also investigated simultaneous recovery and desulfurization of bitumen from oil sand using ODS and ultrasound. Recovery ratio of bitumen from oil sand was 68.1% and the purity of recovered bitumen was 72.3%.</p>
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No.1-7 Characteristics and Self-heating Behavior of Moatize Coals, Moatize Coal Basin, Mozambique
UACIQUETE Dorcas L. E., KATO Takahiro, OKAWA Hirokazu, SUGAWARA Katsuyasu
石炭科学会議発表論文集 2017年 - 2017年 一般社団法人 日本エネルギー学会
<p>Mozambique has a great potential in terms of coal deposits, the most important is Moatize Coal Basin (MCB) located in Tete Province, Moatize district. The MCB has estimates reserves of about 2.5 billion tons, with thick coal seams allowing the open-pit exploitation. It is well known throughout the world that Moatize basin is a world class deposit for coking and thermal. However, recently, occurrences of spontaneous combustion are being resisted in both in situ coal seams and stockpiles of washed products (coking coal and thermal coal). Spontaneous combustion is a direct result of self-heating and it is a global issue affecting environment, economy and human health.</p><p>In this study, petrographic and chemical properties of samples of raw coal (<i>in situ layers</i>), coking coal and thermal coal were studied using image analysis through oil immersion microscopy and elemental and proximate analyzers (CHN, CS and TGA-DTA) respectively, to predict the propensity of self-heating. The microscopic characterization revealed important features such as changes in vitrinite reflectance, oxidation rims, micropores and cracks mainly on in situ coal and some signs of weathering and oxidation on thermal coal which are related to their reactivity and potential to self-heating leading later to spontaneous combustion</p>
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加藤 貴宏, 佐藤 起子, 大川 浩一, 菅原 勝康
石炭科学会議発表論文集 2017年 - 2017年 一般社団法人 日本エネルギー学会
<p>Decreasing of activity of the denitration catalyst caused by arsenic adsorption is one of the big problems against the stable long term operation of the coal power plant. In order to remove arsenic from the catalyst by conversion of As<sub>2</sub>O<sub>5</sub> to volatile As<sub>2</sub>O<sub>3</sub>, methanol was used as the carbon source for the reduction. Effects of treatment temperature, reaction time and partial pressure of methanol on changes in the removal extent of arsenic, the chemical forms of vanadium and the denitration activity were investigated.</p>
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作左部 皓輔, 加藤 貴宏, 大川 浩一, 菅原 勝康
石炭科学会議発表論文集 2017年 - 2017年 一般社団法人 日本エネルギー学会
<p>Selective recovery process of titanium, vanadium and tungsten has been developed for the spent denitrification catalyst produced from coal fired plant. Volatilization behaviors of the rare metals were followed in a chlorine gas stream with the addition of carbon as a reducing agent. Methanol vapor was supplied to a fixed bed of catalyst at 400 °C and fine carbon was deposited on the surface of catalyst. The volatilization rates of the rare metals ware enhanced drastically with the use of the deposited carbon compared to pyrolytic carbon prepared from phenolphthalein. The rare metals in the catalyst could be recovered selectively at 400 °C without silicon, iron and aluminum when the deposited carbon of 20 wt% was used.</p>
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No.1-11 過酸化水素と無水酢酸を用いたハイパーコールの酸化脱硫
小野寺 凱, 加藤 貴宏, 大川 浩一, 菅原 勝康
石炭科学会議発表論文集 2017年 - 2017年 一般社団法人 日本エネルギー学会
<p>To develop a mild chemical desulfurization method without residual chemicals in the treated Hyper-coal, desulfurization behavior was investigated by oxidation using hydrogen peroxide and acetic anhydride at room temperature and by pyrolyzing the treated sample under nitrogen stream. XANES analysis showed that the Hyper-coal contained only thiophenic sulfur and that the thiophenic sulfur changed to sulfone during the oxidation treatment. High removal extent of sulfur with high char yield was achieved by pyrolyzing the oxidized sample prepared at room temperature for 24 hour.</p>
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田村 真実, 加藤 貴宏, 大川 浩一, 菅原 勝康
石炭科学会議発表論文集 2017年 - 2017年 一般社団法人 日本エネルギー学会
<p>In a series of studies on the development of coal utilization process with pre-desulfurization, three types of coal were extracted by 1-methylnapthalene and sulfur distribution from raw coals to products (Soluble, Residue and Deposit) was clarified. XANES analysis indicated that most of pyritic sulfur was distributed to Residue. Soluble contained no inorganic sulfur. Every Soluble obtained from three types of coal contained organic sulfur, especially thiophenic sulfur only. Thiophenic sulfur content in Soluble decreased linearly with the increase of the steps of extraction using an ionic liquid of imidazolium type.</p>
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Desulfurization of coal soluble by multistep extraction using ionic liquids
Katsuyasu Sugawara, Mami Tamura, Takahiro Kato, Hirokazu Okawa
6th International Conference on Sustainable Energy & Environment (SEE2016) (Bangkok) 2016年11月 - 2016年11月