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Two-Stage Conversion of Low-Rank Coal into Liquid Fuel under Mild Condition

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Two-Stage Conversion of Low-Rank Coal into Liquid Fuel under...

酸洗脱灰及离子交换对低阶煤热溶剂提质分离的影响

高等学校工程热物理第二十届全国学术会议

作者： Xian Li Zong Zhang Dedy Eka Priyanto ryuichi ashida Guangqian Luo Hong Yao Kouichi Miura State Key Laboratory of Coal Combustion Huazhong University of Science and Technology

The authors have recently proposed a degradative solvent extraction method to upgrade and fractionate various types of lowrank coals into several fractions at around 350 °C. The low-molecular-weight fraction which was recovered as solid(termed soluble) was free from ash and moisture, had yield of 23.5 – 61.0 wt% on carbon basis, molecular weight of around 300, carbon content of as high as 81.5 – 84.8 wt% and oxygen content of as low as 6.5 – 12.1 wt%. In this work the combination of the proposed extraction method and liquefaction of the soluble under mild condition as a two-stage treatment method to produce liquid fuel was initially investigated. A lignite(LY) was extracted by the proposed extraction method. The solubles obtained were then liquefied at 380 and 400 oC by using FeO OH/sulfur as catalyst under the H2 pressure of as low as 2 MPa(at room temperature). The results showed that as high as 27.3 % of carbon in the LY was converted as soluble by the extraction. 55.4 wt% of LY soluble was then converted as liquid fraction(oil) excluding H2 O by liquefaction. It is worth noting that much more oxygen was removed as H2 O rather than CO2 during the two-stage treatment compared with the direct liquefaction of the raw material. Most of the CO2 and H2 O from the two-stage treatment were formed at extraction stage, and the yields of soluble liquefaction were much smaller than those of the direct liquefaction of raw materials. The oxygen content of the oil from LY soluble liquefaction was 3.9 wt%, much lower than that from the direct liquefaction of the raw material. Also, the chemical composition of the oil from soluble liquefaction was significantly different with the oil from the direct liquefaction of raw material. It was found that the CO2 emission and H2 consumption of the two-stage treatment were significantly less than those of the direct liquefaction of raw material. Also, the mass transfer of soluble liquefaction was much easier than that of the direct liquefa

关键词： lignite degradative solvent extraction liquefaction two-stage treatment

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燃料化学学报 2014年第8期42卷 897-904页

作者：李显朱贤青肖黎芦田隆一三浦孝一罗光前姚洪华中科技大学煤燃烧国家重点实验室湖北武汉430074 京都大学化工学院京都大学先进能源研究所

采用酸洗脱灰、酸洗和Na/Co离子交换对两种低阶煤(MM和LY)进行预处理,然后以1-甲基萘为溶剂对预处理煤进行热溶剂提质萃取,把煤分成提质煤(UC)、高分子量萃取物(deposit)和低分子量萃取物(soluble)3种主要固体组分,以及少量水和气体产... 详细信息

采用酸洗脱灰、酸洗和Na/Co离子交换对两种低阶煤(MM和LY)进行预处理,然后以1-甲基萘为溶剂对预处理煤进行热溶剂提质萃取,把煤分成提质煤(UC)、高分子量萃取物(deposit)和低分子量萃取物(soluble)3种主要固体组分,以及少量水和气体产物。结果表明,通过脱灰和离子交换均提高了两种萃取物的收率及碳含量,并明显促进了煤中含氧官能团的脱除。脱灰后MM煤的高分子量萃取物收率从3.5%增加到9.5%,Na离子交换LY的低分子量萃取物的碳含量高达85.3%、氧含量低于6.4%。离子交换对两种萃取物的物理化学性质有明显的影响,Na+的影响尤为显著。酸洗脱灰和离子交换对低阶煤热溶剂提质萃取有明显促进作用。

关键词：热溶剂萃取低阶煤脱灰离子交换预处理

低阶煤与生物质在热溶剂提质萃取过程中的相互作用（英文）

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燃料化学学报 2019年第1期47卷 14-22页

作者：坚一明李显朱贤青芦田隆一 WORASUWANNARAK Nakorn 胡振中罗光前姚洪钟梅刘景梅马凤云三浦孝一新疆大学化学化工学院煤炭清洁转化与化工过程自治区重点实验室新疆乌鲁木齐830046 华中科技大学能源与动力工程学院煤燃烧国家重点实验室湖北武汉430074 京都大学化工学院泰国国王科技大学能源与环境联合研究生院泰国曼谷10140

作者前期工作中提出了一种针对生物质废弃物或低阶煤的热溶提质萃取方法,该方法可以在350℃下实现生物质或低阶煤的提质及多级分离,获得高附加值的萃取物。与生物质的热溶提质萃取比较,低阶煤的萃取物收率较低。本研究提出对生物质和低... 详细信息

作者前期工作中提出了一种针对生物质废弃物或低阶煤的热溶提质萃取方法,该方法可以在350℃下实现生物质或低阶煤的提质及多级分离,获得高附加值的萃取物。与生物质的热溶提质萃取比较,低阶煤的萃取物收率较低。本研究提出对生物质和低阶煤混合物进行热溶提质萃取,通过两者的物理化学相互作用,来提高其萃取收率。研究结果表明,对两者混合物热溶剂提质分离得到萃取物的产率及元素组成与理论计算结果略有不同,理论计算结果是假设生物质与煤之间无交互作用而得到的。煤中的矿物质对生物质热分解起催化作用,导致收率有所增加。煤、生物质及其混合物通过热溶剂提质分离得到的萃取物的元素组成、分子量分布、化学结构、热分解和热塑性非常相似。总体而言,低阶煤与生物质在热溶剂提质萃取过程的交互作用较小。但是,本研究证明了热溶提质萃取方法不仅适用于煤或生物质,也适用于它们的混合物。这意味着热溶剂提质萃取法可以在不改变任何工艺条件参数的情况下,以煤、生物质及其混合物作为原料。

关键词：低阶煤生物质混合物热溶剂萃取提质

MicroGrid Designer:user-friendly design,operation and control assist tools for resilient microgrid and autonomous community

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Global Energy Interconnection 2022年第3期5卷 249-258页

作者： ryuichi Yokoyama Yicheng Zhou Energy and Environment and Technology Research Institute and Waseda University 1-22-2 Nishi-Waseda ShinjukuNishi-Waseda East Wing 106Tokyo169-0051Japan

During this decade,many countries have experienced natural and accidental disasters,such as typhoons,floods,earthquakes,and nuclear plant accidents,causing catastrophic damage to *** the end of 2019,all countries of the world are struggling with the COVID-19 and pursuing countermeasures,including inoculation of vaccine,and changes in our lifestyle and social *** these experiences have made the residents in the affected regions keenly aware of the need for new infrastructures that are resilient and autonomous,so that vital lifelines are secured during calamities.A paradigm shift has been taking place toward reorganizing the energy social service management in many countries,including Japan,by effective use of sustainable energy and new supply ***,such new power sources and supply schemes would affect the power grid through intermittency of power output and the deterioration of power quality and ***,new social infrastructures and novel management systems to supply energy and social service will be *** this paper,user-friendly design,operation and control assist tools for resilient microgrids and autonomous communities are proposed and applied to the standard microgrid to verify its effectiveness and performance.

关键词： Microgrid Autonomous community Grid design and analysis Resilience Unit commitment Economic load dispatch Load frequency control Dynamic power flow Energy management system

Liquid–liquid equilibrium extraction of ethanol with mixed solvent for bioethanol concentration

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Chinese Journal of Chemical Engineering 2016年第2期24卷 253-258页

作者： Hiroaki Habaki Haihao Hu ryuichi Egashira Department of International Development Engineering Graduate School of Science and EngineeringTokyo Institute of Technology

The extraction of ethanol with the solvents of aldehydes mixed with m-xylene was studied for the bioethanol concentration *** and benzaldehyde were selected as extraction solvents,with which the solubility of water is small,expecting large distribution coefficient of *** liquid–liquid two-phase region was the largest with m-xylene solvent,followed by benzaldehyde and *** region of two liquid–liquid phase became larger with the mixed solvent of m-xylene and furfural than that with furfural *** NRTL model was applied to the ethanol–water–furfural–m-xylene system,and the model could well express the liquid–liquid equilibrium of the *** any solvent used in this study,the separation selectivity of ethanol relative to water decreased as the distribution coefficient of ethanol *** separation selectivity with m-xylene was the largest among the employed solvents,but the distribution coefficient was the *** solvent mixture of furfural and m-xylene showed relatively high distribution coefficient of ethanol and separation selectivity,even in the higher mass fraction of m-xylene in the solvent *** ethanol extraction with a countercurrent multistage extractor by a continuous operation was simulated to evaluate the extraction *** ethanol content could be concentrated in the extract phase with relatively small number of extraction stages but low yield of ethanol was obtained.

关键词： Bioethanol Solvent extraction NRTL model

A Simple Method for Synthesizing Ultra-high-molecular-weight Polystyrene through Emulsion Polymerization Using Alkyl-9-BBN as an Initiator

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Chinese Journal of Polymer Science 2018年第5期36卷 592-597页

作者： Chao Zhao ryuichi Sugimoto Yusuke Naruoka School of Environmental Science and Engineering Kochi University of Technology

Styrene emulsion polymerization using an alkyl-9-BBN, synthesized by reacting 9-BBN（9-borabicyclo-[3.3.1]-nonane） and styrene, in an aqueous sodium dodecyl sulfate（SDS） solution was studied. Ultra-high-molecular-weight（〉 1.0 × 10~7） polystyrene was synthesized using a radical initiator formed through the aerobic oxidation of this alkyl-9-BBN in a high yield（〉 80%）. The kinetics of this emulsion polymerization of styrene with the alkyl-9-BBN was investigated. We confirmed that in the initial stage of the polymerization, the initial reaction rate followed first-order kinetics. The activation energy for this emulsion polymerization of styrene was approximately 56.2 kJ/mol.

关键词： Emulsion polymerization 9-BBN Ultra-high molecular weight polystyrene

The Dauki Fault at the Shillong Plateau-Bengal Basin Boundary in Northeastern India:2D Finite Element Modeling

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Journal of Earth Science 2012年第6期23卷 854-863页

作者： Md Shofiqul Islam ryuichi Shinjo Faculty of Science University of the RyukyusOkinawa 903-0213Japan Department of Petroleum and Mining Engineering Shahjalal University of Science and TechnologySylhet 3114Bangladesh

The Dauki fault is a major fault along the southern boundary of the Shillong plateau that may be a source of destructive seismic hazards for the adjoining areas, including northeastern Bangladesh. In this study, we simulated the present stress distribution and the ongoing convergence deformation within the study area using numerical simulation. This simulation attempts to deter- mine the proper dip angle of the Dauki fault from a variety of differently established models but with the same realistic boundary conditions. The simulated stress field helped to predict the type of tec- tonic environment and the faulting patterns of the study area. The best-fit model can account for the compressive stress regime in the study area, except in the uppermost part of the Shillong plateau, the Bengal basin, and Assam areas where extensional stress regimes exists. In the model, the elements for which Mohr-Coulomb＇s failure occurs correspond with the observed earthquake data that refer to the Dauki fault as a north-dipping thrust fault.

关键词： Dauki fault Bengal basin tectonic stress earthquake.

Tectonics in the Northwestern West Philippine Basin

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Journal of China University of Geosciences 2008年第3期19卷 191-199页

作者：倪祥龙吴时国 Shinjo ryuichi Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of SciencesQingdao 266071 Research Institute of Petroleum Exploration ＆ Development-Northwest （NWGI） PetroChina Lanzhou 730020 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China China University of Petroleum （Huadong） Qingdao 266555 China Department of Physics and Earth Sciences University of the Ryukyus Senbaru-1 Nishihara Okinawa 903-0213 Japan

The West Philippine basin （WPB） is a currently inactive marginal basin belonging to Philippine Sea plate, which has a complex formation history and various crust structures. Based on gravity, magnetic and seismic data, the tectonics in West Philippine basin is characterized by amagma spreading stage and strike slip fractures. NNE trending Okinawa-Luzon fracture zone is a large fracture zone with apparent geomorphology and shows a right-handed movement. The results of joint gravity-magnetic-seismic inversion suggest that the Okinawa-Luzon fracture zone has intensive deformation and is a transform fault. Western existence of the NW trending fractures under Ryukyu Islands Arc is the main cause of the differences between south and north Okinawa Trough. The Urdaneta plateau is not a remained arc, but remnant of mantle plume although its lava chemistry is similar to oceanic island basalt （OIB）.

关键词： tectonics amagma spreading gravity anomaly magnetic anomaly West Philippine basin.

GIS-based Frequency Ratio and Logistic Regression Modelling for Landslide Susceptibility Mapping of Debre Sina Area in Central Ethiopia

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Journal of Mountain Science 2015年第6期12卷 1355-1372页

作者： Matebie METEN Netra Prakash BHANDARY ryuichi YATABE Geo-Disaster Research Laboratory Graduate School of Science and Engineering Ehime University

Ethiopia has a mountainous landscape which can be divided into the Northwestern and Southeastern plateaus by the Main Ethiopian Rift and Afar Depression. Debre Sina area is located in Central Ethiopia along the escarpment where landslide problem is frequent due to steep slope, complex geology, rift tectonics, heavy rainfall and seismicity. In order to tackle this problem, preparing a landslide susceptibility map is very important. For this, GISbased frequency ratio(FR) and logistic regression(LR) models have been applied using landslide inventory and the nine landslide factors(i.e. lithology, land use, distance from river & fault, slope, aspect, elevation, curvature and annual rainfall). Database construction, weighting each factor classes or factors, preparing susceptibility map and validation were the major steps to be undertaken. Both models require a rasterized landslide inventory and landslide factor maps. The former was classified into training and validation landslides. Using FR model, weights for each factor classes were calculated and assigned so that all the weighted factor maps can be added to produce a landslide susceptibility map. In the case of LR model, the entire study area is firstly divided into landslide and non-landslide areas using the training landslides. Then, these areas are changed into landslide and non-landslide points so as to extract the FR maps of the nine landslide factors. Then a linear relationship is established between training landslides and landslide factors in SPSS. Based on this relationship, the final landslide susceptibility map is prepared using LR equation. The success-rate and prediction-rate of FR model were 74.8% and 73.5%, while in case of LR model these were 75.7% and 74.5% respectively. A close similarity in the prediction and validation rates showed that the model is acceptable. Accuracy of LR model is slightly better in predicting the landslide susceptibility of the area compared to FR model.

关键词： Landslide susceptibility GIS Frequency Ratio Logistic Regression Debre Sina Ethiopia