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Review on research and development of oxy-coal burner for carbon capture

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Science China(Technological Sciences) 2024年第3期67卷 647-672页

作者： GUO JunJun LIU JingZhang ZHANG Tai HU fan LI PengFei LIU zhaohui ZHENG ChuGuang State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and Technology Wuhan 430074China CCRC King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal Beijing 100049China Institute of Energy Research Jiangxi Academy of SciencesNanchang 330096China Carbon Neutrality Research Center of Jiangxi Province Nanchang 330096China Faculty of Engineering China University of Geosciences(Wuhan)Wuhan 430074China National Energy Research and Development Center of Clean and Low Carbon Coal-based Power Generation Technologies Wuhan 430074China

In the past two decades, the oxy-fuel combustion of pulverized coal has been extensively developed, leading to the completion of several large industrial pilot oxy-fuel plants worldwide. Various types of oxy-fuel burners have been designed and tested in largescale pilot plants as key components of oxy-fuel combustion. These burners face major challenges in terms of their flame stability because of their decreasing stream momentum ratio and increasing carbon dioxide concentration. However, it offers flexibility in adjusting the oxygen concentration in each burner stream. This study aims to provide a comprehensive review of the state-of-the-art knowledge on oxy-coal burner design and operation in power plants. First, the combustion characteristics under oxy-fuel conditions are briefly introduced. Subsequently, the principal requirements and fundamental parameters of the oxy-coal burners are discussed. The development process of oxy-fuel burners is also presented. Moreover, a compatible design strategy and scaling-up techniques are described for oxy-coal burners developed by the authors over the past ten years. The performances of oxy-coal burners in three large pilot oxy-fuel plants worldwide are summarized and compared. Finally, concluding remarks are provided and potential research needs are suggested.

关键词： carbon capture oxy-fuel combustion oxy-fuel burner pulverized coal compatible design

Mechanism underlying fanmugua(Fructus Caricae)leaf multicomponent synergistic therapy for anemia:data mining based on hematopoietic network

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Journal of Traditional Chinese Medicine 2023年第3期43卷 542-551页

作者： JIA Lihong TIE Defu fan zhaohui CHEN Dan CHEN Qizhu CHEN Jun BO Huaben School of Bioscience and Biopharmaceutics Guangdong Province Key Laboratory for Biotechnology Drug CandidatesGuangdong Pharmaceutical UniversityGuangdong 510006China Department of Pharmacy Zhanjiang Health School of GuangdongGuangdong 524037China College of Pharmacy Guangdong Pharmaceutical UniversityGuangdong 510006China

OBJECTIVE:To investigate the underlying mechanism of fanmugua(Fructus Caricae) Leaf(CPL) multicomponent synergistic therapy for anemia.METHODS:The components were identified in the literature.Six databases were searched for targets of CPL.Enrichment analysis was used to determine the targets associated with anemia and in bone marrow.Based on the Kyoto Encyclopedia of Genes and Genomes database,pathways and targets related to hematopoiesis were obtained.The key targets were obtained by protein-protein interaction analysis.Molecular docking was used to analyze the binding ability of key targets and active components.Bone marrow cells were used as an experimental model to verify the drug efficacy.RESULTS:A total of 139 components and 1868 targets of CPL were retrieved from the literature.By disease enrichment analysis,543 targets for hemorrhagic anemia,223 targets for aplastic anemia,and 126 targets for sickle cell anemia were obtained.Target organ enrichment yielded 27,29,and 20 targets of bone marrow.Based on KEGG pathway enrichment,a total of 47 shared hematopoietic pathways and 42 related targets were found.The key targets were vascular endothelial growth factor A(VEGFA),interleukin 10(IL-10),plateletendothelial cell adhesion molecule-1(PECAM1),C-C motif chemokine 2(CCL2),and vascular cell adhesion molecule 1(VCAM1).The CPL active components included ursolic acid,quercetin,and hesperidin.The expression of VEGFA was significantly increased after CPL treatment.Quercetin and ursolic acid acted on VEGFA.Quercetin and Hesperidin acted on VCAM1.Quercetin acted on IL-10,CCL2,VCAM1,and VEGFA.Cell experiments revealed that CPL could promote the proliferation and migration of bone marrow cells.CONCLUSIONS:CPL has the synergistic efficacy of treating anemia through multiple components,targets,and pathways.

关键词： anemia data mining network pharmacology molecular docking simulation Carica papaya(Fructus Caricae)Leaf synergistic effect

Mott Gap Filling by Doping Electrons through Depositing One Sub-Monolayer Thin Film of Rb on Ca_(2)CuO_(2)Cl_(2)

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Chinese Physics Letters 2024年第5期41卷 90-96页

作者：李寒王朝晖范圣泰李华州杨欢闻海虎 National Laboratory of Solid State Microstructures and Department of Physics Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

Understanding the doping evolution from a Mott insulator to a superconductor probably holds the key to resolve the mystery of unconventional superconductivity in copper oxides. To elucidate the evolution of the electronic state starting from the Mott insulator, we dose the surface of the parent phase Ca_(2)CuO_(2)Cl_(2) by depositing Rb atoms, which are supposed to donate electrons to the CuO_(2) planes underneath. We successfully achieved the Rb sub-monolayer thin films in forming the square lattice. The scanning tunneling microscopy or spectroscopy measurements on the surface show that the Fermi energy is pinned within the Mott gap but close to the edge of the charge transfer band. In addition, an in-gap state appears at the bottom of the upper Hubbard band(UHB), and the Mott gap will be significantly diminished. Combined with the Cl defect and the Rb adatom/cluster results, the electron doping is likely to increase the spectra weight of the UHB for the double occupancy. Our results provide information to understand the electron doping to the parent compound of cuprates.

关键词： doping holds Electron

极端气温对粮食生产韧性的影响效应研究——基于绿色金融视角

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中国生态农业学报（中英文） 2024年第5期32卷 896-910页

作者：范振楠覃朝晖余思明三峡大学经济与管理学院宜昌443002

随着极端气温事件增多,粮食生产受到严重威胁。本文基于2012—2021年中国除港澳台地区的31个省(自治区、直辖市)面板数据测算粮食生产韧性,采用面板Tobit模型论证极端气温对粮食生产韧性的影响,并运用调节效应模型检验绿色金融发挥的调... 详细信息

随着极端气温事件增多,粮食生产受到严重威胁。本文基于2012—2021年中国除港澳台地区的31个省(自治区、直辖市)面板数据测算粮食生产韧性,采用面板Tobit模型论证极端气温对粮食生产韧性的影响,并运用调节效应模型检验绿色金融发挥的调节效应。研究发现,极端气温显著降低了粮食生产韧性水平,且极端高温对粮食生产韧性的负向影响更大。机制分析表明,绿色金融在极端气温对粮食生产韧性的影响中发挥负向调节作用。异质性分析显示,在粮食主产区和产销平衡区,极端气温对粮食生产韧性的抑制作用更明显,并且极端高温的不利影响大于极端低温;从粮食生产韧性的3个维度来看,极端高温显著降低了抵抗力和适应力,极端低温显著降低了适应力。绿色金融调节效应也呈现明显的异质性,其在粮食主产区、产销平衡区以及适应力维度均具有显著的负向调节作用;但在主销区调节作用不显著,且在变革力维度仅缓解了极端低温对粮食生产韧性的不利影响。据此,为了应对极端气温的不利影响,未来可通过持续提高粮食生产保障水平、加强粮食生产领域绿色金融支持力度、制定差异化粮食生产韧性提升方案,来促进粮食生产韧性水平提高。

关键词：极端气温粮食生产韧性绿色金融粮食生产功能区异质性

Paleontology Knowledge Graph for Data-Driven Discovery

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Journal of Earth Science 2024年第3期35卷 1024-1034页

作者： Yiying Deng Sicun Song Junxuan fan Mao Luo Le Yao Shaochun Dong Yukun Shi Linna Zhang Yue Wang Haipeng Xu Huiqing Xu Yingying Zhao zhaohui Pan Zhangshuai Hou Xiaoming Li Boheng Shen Xinran Chen Shuhan Zhang Xuejin Wu Lida Xing Qingqing Liang Enze Wang School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth Material Cycling Nanjing UniversityNanjing 210023China State Key Laboratory for Mineral Deposits Research Nanjing UniversityNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China Centre for Research and Education on Biological Evolution and Environment Nanjing UniversityNanjing 210023China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China School of the Earth Sciences and Resources China University of GeosciencesBeijing 100083China

A knowledge graph(KG)is a knowledge base that integrates and represents data based on a graph-structured data model or topology.Geoscientists have made efforts to construct geosciencerelated KGs to overcome semantic heterogeneity and facilitate knowledge representation,data integration,and text analysis.However,there is currently no comprehensive paleontology KG or data-driven discovery based on it.In this study,we constructed a two-layer model to represent the ordinal hierarchical structure of the paleontology KG following a top-down construction process.An ontology containing 19365 concepts has been defined up to 2023.On this basis,we derived the synonymy list based on the paleontology KG and designed corresponding online functions in the OneStratigraphy database to showcase the use of the KG in paleontological research.

关键词： paleontology knowledge graph ontology synonymy list OneStratigraphy big data ge-ology.

数字经济与农业农村现代化——基于地级市层面的研究

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中南财经政法大学学报 2024年第4期 108-119页

作者：覃朝晖范振楠余思明三峡大学经济与管理学院湖北宜昌443002

数字经济不断向“三农”领域渗透,深刻影响着农业农村现代化进程。本文基于中国246个地级市的面板数据,构建农业农村现代化评价指标体系,从要素配置视角分析数字经济对农业农村现代化的影响及作用机制。研究发现:数字经济对农业农村现... 详细信息

数字经济不断向“三农”领域渗透,深刻影响着农业农村现代化进程。本文基于中国246个地级市的面板数据,构建农业农村现代化评价指标体系,从要素配置视角分析数字经济对农业农村现代化的影响及作用机制。研究发现:数字经济对农业农村现代化具有显著的促进作用,从农业农村现代化三个维度来看,数字经济能够显著推动农业现代化和农村现代化,但对农民现代化的影响不显著;机制检验表明,数字经济能够通过农业技术创新、农村资本投入和劳动力流动等要素的优化配置,提升农业农村现代化水平;在非粮食主产区和农业农村现代化水平较高地区,数字经济推动农业农村现代化的效果更明显。为此,需加快数字经济与农业农村深度融合,优化农业农村地区要素配置,实施差异化数字经济战略。

关键词：数字经济农业农村现代化农业技术创新农村资本投入劳动力流动要素配置

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下一代相干PON关键技术研究进展与展望(特邀)

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光通信研究 2024年第1期 14-24页

作者：殷明珠王玮潘竞顺李凡李朝晖中山大学电子与信息工程学院广州510006 中山大学广东省光电信息处理芯片与系统重点实验室广州510006

相比于传统的强度调制/直接检测(IM/DD)系统,相干系统具有更高的容量和功率预算,能更好地满足高容量无源光网络(PON)的需求。近年来,如何将相干应用于PON场景以更好地支撑未来高带宽业务已成为研究热点。文章从系统架构、相干简化、上... 详细信息

相比于传统的强度调制/直接检测(IM/DD)系统,相干系统具有更高的容量和功率预算,能更好地满足高容量无源光网络(PON)的需求。近年来,如何将相干应用于PON场景以更好地支撑未来高带宽业务已成为研究热点。文章从系统架构、相干简化、上行突发模式检测以及灵活PON 4个方面对相干PON关键技术研究现状进行了总结,并展望提出了激光共享上下行滤波器组多载波(FBMC)-PON和半导体光放大器(SOA)电流调控灵活PON方案。

关键词：相干无源光网络系统架构相干简化上行突发模式灵活无源光网络

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基于卷积神经网络的烧结成品率预测

中南大学学报（自然科学版） 2024年第4期55卷 1263-1271页

作者：彭梓塘黄晓贤范晓慧赵利明李骞陈许玲匡朝辉甘敏中南大学资源加工与生物工程学院湖南长沙410083 宝钢湛江钢铁有限公司炼铁厂广东湛江524000

成品率是综合反映烧结矿产量、质量和能耗的关键性指标。针对成品率检测存在滞后性问题,以烧结机尾断面图像作为输入,通过卷积神经网络拟合断面图像与成品率的关系,实现烧结成品率的在线预测。根据烧结机尾断面红外图像的特点,采用Dense... 详细信息

成品率是综合反映烧结矿产量、质量和能耗的关键性指标。针对成品率检测存在滞后性问题,以烧结机尾断面图像作为输入,通过卷积神经网络拟合断面图像与成品率的关系,实现烧结成品率的在线预测。根据烧结机尾断面红外图像的特点,采用DenseNet网络结构的卷积神经网络作为建模方法,并以多尺度稠密连接块对网络结构进行改进,在同一层网络中提取多尺度、图像信息,通过拟合高维图像特征与烧结成品率之间的关系,实现成品率的准确预测。采用国内某大型钢铁生产企业的机尾断面图像和成品率数据对模型进行验证。研究结果表明:所提出的改进DenseNet网络在烧结成品率预测问题上具有较强的拟合和泛化能力,定义成品率预测值与实际值绝对误差在±2.8%的区间范围内为命中目标,模型命中率达92.66%,且均方根误差仅为1.76%,可为生产工艺参数的优化调控提供依据。

关键词：烧结过程成品率预测断面图像卷积神经网络

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Insight into the effect of gel drying temperature on the structure and desulfurization performance of ZnO/SiO_(2)adsorbents

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Chinese Journal of Chemical Engineering 2023年第4期56卷 233-241页

作者： Chao Yang Zhelin Su Yeshuang Wang Huiling fan Meisheng Liang zhaohui Chen College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024China State Key Laboratory of Multi-phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

A series of ZnO/SiO_(2) adsorbents were prepared by a sol-gel method using tetraethyl orthosilicate,ethylene glycol(EG)and nitrates as precursors.The effect of gel drying temperature on the structure and desulfurization performance of the adsorbents were investigated in detail.It is found that the low drying temperature led to a weak interaction among EG,Si AOH/H_(2)O and the nitrates in the gel system,which caused the oxidation of EG by NO3-and formed zinc glyoxylate complex during the gel calcination process,whereas this oxidation process also occurred at a high drying temperature during the gel drying process.The formed zinc glyoxylate complex promoted the generation of monodentate carbonate on the surface of Zn O,which resulted in the inferior desulfurization performance of adsorbents despite they have smaller Zn O nanoparticles.The gel dried at 120°C formed the hydrogen bonds between EG and Si AOH/H_(2)O and a strong interaction between zinc oxo-clusters and NO3-was also found in the gel system,which avoided the oxidation of EG by NO3-during the preparation process and the Zn O nanoparticles with sizes of 6 nm were formed by a combustion method.The adsorbent affords a highest sulfur capacity of 104.9 mg·g^(-1) in this case.In addition,the gel drying temperature has a significant influence on the textural properties of the adsorbents except their surface area.

关键词： Sol-gel method Drying temperature H_(2)S removal Zinc-silica composites Hydrogen bonds