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利用CCSEM对煤中矿物特性及其燃烧转化行为的研究

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工程热物理学报 2007年第5期28卷 875-878页

作者：于敦喜徐明厚姚洪刘小伟 Zhang Lian Wang Qunying yoshihiko ninomiya 华中科技大学煤燃烧国家重点实验室湖北武汉430074 产业技术综合研究所能源技术研究部日本茨城县筑波市小野川305-8569 中部大学应用化学系日本爱知县春日井市松本町487-8501

利用计算机控制扫描电镜技术(Computer Controlled Scanning Electron Microscopy,CCSEM)研究了煤中矿物特性及其在燃烧过程中的转化行为。结果表明原煤中矿物主要为粘土和黄铁矿,且主要以外在矿物的形式存在,粒径多在10μm以上,而内在... 详细信息

利用计算机控制扫描电镜技术(Computer Controlled Scanning Electron Microscopy,CCSEM)研究了煤中矿物特性及其在燃烧过程中的转化行为。结果表明原煤中矿物主要为粘土和黄铁矿,且主要以外在矿物的形式存在,粒径多在10μm以上,而内在矿物绝大部分小于10μm。不同矿物具有不同的粒径分布和内在/外在特性,显示煤中矿物分布的非均一性。煤灰主要由莫来石、铁、钙和钠的铝硅酸盐组成。通过K、Fe、Ca和Na在原煤及其产物所含矿物中的质量分布对比,揭示了它们在燃烧过程中的转化行为。煤灰粒径的变大是矿物颗粒熔融聚合的结果。

关键词：煤矿物转化 CCSEM

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燃煤电厂印尼褐煤氧化自燃过程实验研究

煤炭转化 2014年第4期37卷 58-63页

作者：苏攀王群英张琨岳益锋陈龙郑智扬 yoshihiko ninomiya 华电电力科学研究院福建华电可门发电有限公司日本中部大学应用化学系

针对两种印尼褐煤进行了自燃倾向性评价,研究了印尼低热和高热褐煤煤堆在堆放周期内不同高度和不同深度方位温度变化规律.结果表明,在相同的堆放时间下,低热褐煤煤堆达到自燃敏感温度区域范围比高热褐煤煤堆广泛,同时建立煤堆内部温度... 详细信息

针对两种印尼褐煤进行了自燃倾向性评价,研究了印尼低热和高热褐煤煤堆在堆放周期内不同高度和不同深度方位温度变化规律.结果表明,在相同的堆放时间下,低热褐煤煤堆达到自燃敏感温度区域范围比高热褐煤煤堆广泛,同时建立煤堆内部温度和表面温度的函数关系,并对印尼褐煤煤堆进行热值损失评估,为燃煤电厂印尼褐煤合理堆放和周转提供科学指导.

关键词：印尼褐煤自燃倾向性热值损失

Application of the FactSage to Predict the Ash Melting Behavior in Reducing Conditions

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Chinese Journal of Chemical Engineering 2006年第6X期14卷 784-789页

作者：李寒旭二宫善彦董众兵张明旭 Department of Chemical Engineering Anhui University of Science and Technology Huainan 232001 China Department of Applied Chemistry Chubu University Kasugai Aichi 487-8501 Japan Department of Material Science and Engineering Anhui University of Science and Technology Huainan 232001 China

FactSage has been used to predict the ash behavior and ash fusion temperature (AFT) at high temperature under reducing atmosphere conditions. For Huainan coal ash samples, it has demonstrated a good agreement between the liquid phase formation as the function of temperature and the tested AFT. The tested and predicted flow temperature (FT) for two typical Huainan coal ashes with the addition of CaO flux are quite fit with the maximum temperature difference less than 74 ℃ which is within acceptable range. It can be concluded that FactSage in combination with X-ray diffraction (XRD) can be used to predict the reactions occurring between minerals, as well as the mineral transformation and slag formation. This is probably an improved way to interpret melting properties of mineral matter in coal and assist in quantifying slag formation in gasifier operation.

关键词： ash fusion temperature, FactSage, ash transformation, Huainan coals

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4个典型煤种的可吸入颗粒物排放研究

中国电机工程学报 2013年第S1期33卷 117-121页

作者：梁秀进陈剑孟莹王群英应光伟二宫善彦华电电力科学研究院浙江省杭州市310030 中部大学

在滴管炉(drop tube furnace,DTF)炉上对4个典型煤种进行了燃烧和制焦试验,分析煤和焦的外观形貌及灰的排放特性,研究煤质结构对可吸入颗粒级的形成机制的影响。迅速析出的挥发分在无烟煤A中易形成煤焦颗粒内部孔洞,在褐煤C、D中易产生... 详细信息

在滴管炉(drop tube furnace,DTF)炉上对4个典型煤种进行了燃烧和制焦试验,分析煤和焦的外观形貌及灰的排放特性,研究煤质结构对可吸入颗粒级的形成机制的影响。迅速析出的挥发分在无烟煤A中易形成煤焦颗粒内部孔洞,在褐煤C、D中易产生裂缝和分裂。烟煤B在燃烧过程中煤焦破碎剧烈,褐煤D则表现出了较强的煤焦坍塌分裂能力。易汽化无机物含量的高低决定了PM1-排放量,与灰熔点一起确定了小颗粒之间的凝聚渗透能力。Mg的汽化比高,PM0.5-中含量较高;方解石的破碎能力强,但汽化比低,PM0.5-中含量低;Fe盐的破碎和汽化作用均较小,PM10中含量低且随粒径变化小。

关键词：煤质结构焦可吸入颗粒物机制

不同煤种燃烧过程中PM_(10)排放特性的研究

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动力工程学报 2014年第10期34卷 821-826页

作者：陈剑梁秀进孟莹王群英应光伟二宫善彦华电电力科学研究院杭州310030 中部大学

在滴管炉(DTF)上对4种典型煤种进行了燃烧试验,研究了煤种、粒径、温度和停留时间对燃煤PM10排放量的影响.结果表明:无烟煤PM10排放量整体较小,烟煤PM1+排放量大,2种褐煤PM1-排放量较大,但PM1+排放量趋势不一致;粒径的影响因煤阶不同而... 详细信息

在滴管炉(DTF)上对4种典型煤种进行了燃烧试验,研究了煤种、粒径、温度和停留时间对燃煤PM10排放量的影响.结果表明:无烟煤PM10排放量整体较小,烟煤PM1+排放量大,2种褐煤PM1-排放量较大,但PM1+排放量趋势不一致;粒径的影响因煤阶不同而差别较大,随粒径增大,烟煤的PM10排放量增大,而高阶褐煤的PM10排放量先增大后减小,低阶褐煤的PM10排放量变化不大;当最高燃烧温度高于灰熔融温度时,PM10排放量随温度升高先增大后减小;随着在高温区停留时间的延长,PM10颗粒物有小颗粒向大颗粒转化的趋势.

关键词： PM10 煤质粒径温度停留时间

NaOH掺量对固硫灰基地质聚合物强度影响研究

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硅酸盐通报 2016年第10期35卷 3362-3366,3372页

作者：陈仕国王群英应光伟宋明光魏雅娟李勇辉二宫善彦华电电力科学研究院杭州310030 中部大学日本4878501

本文以循环流化床锅炉固硫灰为原料,利用NaOH和水玻璃的复合碱性激发剂制备地质聚合物,研究NaOH掺量对固硫灰基地质聚合物强度及结构的影响.结果表明：随着NaOH掺量的增加,地质聚合物的强度呈先增长后降低的趋势.当NaOH/ash 在2.5-3.1mo... 详细信息

本文以循环流化床锅炉固硫灰为原料,利用NaOH和水玻璃的复合碱性激发剂制备地质聚合物,研究NaOH掺量对固硫灰基地质聚合物强度及结构的影响.结果表明：随着NaOH掺量的增加,地质聚合物的强度呈先增长后降低的趋势.当NaOH/ash 在2.5-3.1mol/kg 之间时,固硫灰基地质聚合物的强度达到最高.当NaOH/a sh 大于3.1 mol/kg 时,随NaOH掺量增加,地质聚合物强度下降,Si-0-Al或Si-0-Si 主要特征峰位置向低波数转变.

关键词：固硫灰地质聚合物碱性激发 NaOH

基于热力学平衡计算的煤炭转化过程中砷和汞的迁移转化行为研究

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广东化工 2021年第16期48卷 7-9页

作者：焦发存刘涛武成利李寒旭二宫善彦安徽理工大学化学工程学院安徽淮南232001 日本中部大学应用化学系爱知春日井4878501

利用热力学平衡计算的方法研究了煤炭燃烧和气化过程中As和Hg的挥发特性及其化学形态分布。研究结果表明,燃烧条件下,当温度大于1200℃时As开始挥发,As在富氧燃烧气氛(O_(2)/CO_(2))下的挥发率大于其在空气燃烧气氛(O_(2)/N_(2))下的挥... 详细信息

利用热力学平衡计算的方法研究了煤炭燃烧和气化过程中As和Hg的挥发特性及其化学形态分布。研究结果表明,燃烧条件下,当温度大于1200℃时As开始挥发,As在富氧燃烧气氛(O_(2)/CO_(2))下的挥发率大于其在空气燃烧气氛(O_(2)/N_(2))下的挥发率。As主要以气态AsO形式挥发。气化条件下As完全挥发,气化压力对As的挥发率无影响,但对气相中不同As的化学形态分布影响显著。Hg在煤燃烧和气化条件下的挥发率均为100%,且高温下主要以气态Hg形式挥发。

关键词：热力学平衡计算煤燃烧煤气化砷汞

Angiogenesis and neuronal remodeling after ischemic stroke

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Neural Regeneration Research 2020年第1期15卷 16-19页

作者： Masahiro Hatakeyama Itaru ninomiya Masato Kanazawa Department of Neurology Brain Research Institute Niigata University

Increased microvessel density in the peri-infarct region has been reported and has been correlated with longer survival times in ischemic stroke patients and has improved outcomes in ischemic animal *** raises the possibility that enhancement of angiogenesis is one of the strategies to facilitate functional recovery after ischemic *** vessels and neuronal cells communicate with each other using various mediators and contribute to the pathophysiology of cerebral ischemia as a *** this mini-review,we discuss how angiogenesis might couple with axonal outgrowth/neurogenesis and work for functional recovery after cerebral *** occurs within 4 to 7 days after cerebral ischemia in the border of the ischemic core and ***-ischemic angiogenesis may contribute to neuronal remodeling in at least two ways and is thought to contribute to functional ***,new blood vessels that are formed after ischemia are thought to have a role in the guidance of sprouting axons by vascular endothelial growth factor and laminin/β1-integrin ***,blood vessels are thought to enhance neurogenesis in three stages:1)Blood vessels enhance proliferation of neural stem/progenitor cells by expression of several extracellular signals,2)microvessels support the migration of neural stem/progenitor cells toward the peri-infarct region by supplying oxygen,nutrients,and soluble factors as well as serving as a scaffold for migration,and 3)oxygenation induced by angiogenesis in the ischemic core is thought to facilitate the differentiation of migrated neural stem/progenitor cells into mature ***,the regions of angiogenesis and surrounding tissue may be coupled,representing novel treatment targets.

关键词： angiogenesis axonal outgrowth cerebral ischemia coupling functional recovery guidance neurogenesis stroke

A Study on Development of a Hybrid Aerial/Terrestrial Robot System for Avoiding Ground Obstacles by Flight

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 327-336页

作者： Chinthaka Premachandra Masahiro Otsuka Ryo Gohara Takao ninomiya Kiyotaka Kato IEEE the Department of Electronic Engineering Gradu-ate School of EngineeringShibaura Institute of Technology the Department of Electrical Engineering Graduate School of EngineeringTokyo University of Science

To date, many studies related to robots have been performed around the world. Many of these studies have assumed operation at locations where entry is difficult, such as disaster sites, and have focused on various terrestrial robots, such as snake-like, humanoid, spider-type, and wheeled units. Another area of active research in recent years has been aerial robots with small helicopters for operation indoors and outdoors. However,less research has been performed on robots that operate both on the ground and in the air. Accordingly, in this paper, we propose a hybrid aerial/terrestrial robot system. The proposed robot system was developed by equipping a quadcopter with a mechanism for ground movement. It does not use power dedicated to ground movement, and instead uses the flight mechanism of the quadcopter to achieve ground movement as well. Furthermore, we addressed the issue of obstacle avoidance as part of studies on autonomous control. Thus, we found that autonomous control of ground movement and flight was possible for the hybrid aerial/terrestrial robot system, as was autonomous obstacle avoidance by flight when an obstacle appeared during ground movement.

关键词： Ground movement/flight control hybrid aerial/terrestrial robot obstacle avoidance by flight obstacle recognition