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Combustion mechanism of fluorinated organic compound-modified nano-aluminum composite particles:Towards experimental and theoretical investigations

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Chinese Journal of Aeronautics 2023年第2期36卷 334-349页

作者： Siyi ZHANG yunlan sun Jiuyu CHEN Tao sun Baozhong ZHU School of Petroleum Engineering Changzhou UniversityChangzhou 213164China Key Laboratory of Guizhou High Performance Computational Chemistry Guizhou UniversityGuiyang 550025China

Fluorinated Organic Compounds(FOCs)are commonly used as modifiers for Aluminum(Al)powder to improve its ignition,combustion,and agglomeration ***,the effects of FOCs on combustion and inhibition mechanisms of agglomeration of Al powder are not well *** this paper,based on the experimental study of Fluorinated Graphite(FG)-modified Al matrix composite particles,the combustion and aggregation inhibition mechanisms of FOCs on Al particles were studied by the quantum chemical calculation at B3LYP/6-311+G(d,P)and G3//B3LYP/6-311+G(d,p)*** flame behavior and single particle burning behavior of FG-modified samples were compared through ignition experiments,and the characteristic spectra of Al related oxides of different samples in the initial ignition stage were *** is found that FG increases the burning intensity of Al composite samples significantly,while it decreases the emission intensity of Al secondary *** chemical calculation results show that the thermal decomposition intermediates of FOCs,namely C_(2)F_(4),can react with AlO and Al_(2)O,which weakens the characteristic emission intensity of AlO and Al_(2)O in the sample,and thus inhibits the formation of Al_(2)O_(3)in the combustion *** results contribute to enriching the combustion dynamics model of Al-FOCs reaction system.

关键词： Fluorinated organic compounds nAl Combustion mechanism Agglomeration inhibition Reaction kinetics

Promotional effect of silica on the combustion of nano-sized aluminum powder in carbon dioxide

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Chinese Journal of Aeronautics 2022年第4期35卷 245-252页

作者： Baozhong ZHU Jinghui WANG Qichang WANG yunlan sun Weiqi CHEN Jiquan WANG School of Petroleum Engineering Changzhou UniversityChangzhou 213164China School of Energy and Environment Southeast UniversityNanjing 243002China

This paper presents how the combustion performance of nano-sized aluminum(nAl)powder in carbon dioxide are affected by silica. The ignition and combustion performance of nAl powder with silica addition were studied by a high-temperature tube furnace. An s-type thermocouple and a high-speed motion acquisition instrument were performed to evaluate the ignition temperature, maximum combustion temperature, maximum change of rate of temperature, and combustion propagation speed. The combustion efficiency and combustion products were measured and analyzed by a gas-volumetric method and an X-ray diffraction. The results show that silica added into nAl powder can enhance its maximum combustion temperature and maximum change of rate of temperature, while its ignition temperature increases slightly. The nAl powders with addition of 6.00 wt.% and 12.00 wt.% silica present high combustion propagation speeds, especially for the latter, it has high combustion efficiency. The effect mechanism of silica on the combustion of nAl powder in carbon dioxide was discussed.

关键词： Combustion Mechanism Nano-sized aluminum powder Promotional effect Silica

Using polyvinylidene fluoride to improve ignition and combustion of micron-sized boron powder by fluorination reaction

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Chinese Journal of Aeronautics 2023年第10期36卷 64-76页

作者： Lingqi ZHU Baozhong ZHU Xiaolong ZHAO Yanan WANG Mengchen LI Jiuyu CHEN yunlan sun School of Petroleum and Natural Gas Engineering Changzhou UniversityChangzhou 213164China

Boron has a promising application in the field of propellants due to its high calorific ***,the difficulty of ignition and the poor combustion efficiency of boron(B)have severely limited its efficient *** response to this issue,this paper proposes to improve the ignition and combustion performance of micron-sized boron by the Polyvinylidene Fluoride(PVDF)*** effect of PVDF content on the B combustion performance was systematically studied using a Thermogravimetry-Differential Scanning Calorimetry(TG-DSC),a Transmission Electron Microscope(TEM),an X-Ray Diffractometer(XRD),a laser Particle Size Analyzer(PSA),and a high-speed *** results show that PVDF can significantly reduce the initial oxidation temperature of B powder and increase its reaction *** the PVDF content is 23wt%,the reaction heat and the combustion intensity of B powder reach the maximum and are significantly higher than those of the uncoated B ***,the fluorination reaction that occurs during the combustion process not only can effectively shorten the combustion time of B powder,but also has a positive effect on its flame intensity and propagation speed,and it significantly reduces B particle agglomeration,which improves the combustion efficiency *** study lays the foundation for the application of PVDF modified B in B-based solid propellants.

关键词： Agglomeration Coating Combustion performance Fluorination reaction Polyvinylidene fluoride

天麻脑保护活性成分跨血脑屏障的转运方式研究

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中国医院药学杂志 2024年第10期44卷 1132-1138页

作者：颜明丽杨茜宁珑许春萍孙云兰陈明何芳雁云南中医药大学中药学院云南昆明650500 云南中医药大学云南省傣医药与彝医药重点实验室云南昆明650500

目的:基于药物转运体研究天麻脑保护活性成分对羟基苯甲醛(4-HBd)、对羟基苯甲醇(4-HBA)、3,4-二羟基苯甲醛(3,4-DD)跨血脑屏障(BBB)的转运方式。方法:建立符合要求的4-HBd、4-HBA及3,4-DD于HBSS缓冲液内的HPLC分析方法;用永生化人脑微... 详细信息

目的:基于药物转运体研究天麻脑保护活性成分对羟基苯甲醛(4-HBd)、对羟基苯甲醇(4-HBA)、3,4-二羟基苯甲醛(3,4-DD)跨血脑屏障(BBB)的转运方式。方法:建立符合要求的4-HBd、4-HBA及3,4-DD于HBSS缓冲液内的HPLC分析方法;用永生化人脑微血管内皮细胞(hCMEC/D3)及Transwell结构建立体外BBB转运模型,通过观察细胞形态、记录跨膜电阻值及荧光素钠转运实验加以评价,进行3个成分的跨膜转运研究;通过记录给予不同BBB关键外排转运体抑制剂(维拉帕米、ko143、MK571)后转运量的变化,对比各自外排率(ER)及渗透系数(Papp),明确4-HBd、4-HBA及3,4-DD跨BBB的转运方式及特征。结果:4-HBd、4-HBA、3,4-DD在2 h内的外排率分别在0.83~0.99、0.74~0.97、0.63~0.85之间,且不同时间点3个成分的吸收速率(Papp AP-BL)与外排速率(Papp BL-AP)相近,三者的Papp均大于1×10^(–6)cm·s^(–1),故判断4-HBd、4-HBA及3,4-DD跨BBB入脑方式为脂溶扩散;加入P-gp抑制剂维拉帕米后,4-HBd外排率降低(P<0.05),而4-HBA及3,4-DD外排率无明显变化,故推断4-HBd为外排转运体P-gp的底物。结论:4-HBd、4-HBA及3,4-DD跨BBB方式均为脂溶扩散,其中4-HBd为P-gp外排转运体的底物。

关键词：对羟基苯甲醛对羟基苯甲醇 3,4-二羟基苯甲醛血脑屏障外排转运体双向转运

合成射流对串列双圆柱受力特性及流场特性影响的数值模拟

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常州大学学报（自然科学版） 2024年第1期36卷 76-85页

作者：王海博张品源于海龙孙运兰常州大学石油与天然气工程学院江苏常州213164

合成射流能够通过改变单个圆柱尾部的旋涡脱落模态有效抑制其涡致振动,但对多圆柱结构的控制效果尚待研究。采用数值模拟研究了对称布置在上游圆柱尾部的水平合成射流对串列双圆柱的受力特性和尾流特性的影响。在研究中,来流的雷诺数恒... 详细信息

合成射流能够通过改变单个圆柱尾部的旋涡脱落模态有效抑制其涡致振动,但对多圆柱结构的控制效果尚待研究。采用数值模拟研究了对称布置在上游圆柱尾部的水平合成射流对串列双圆柱的受力特性和尾流特性的影响。在研究中,来流的雷诺数恒定为150,合成射流的位置角度为45°,2个圆柱中心之间的间距比为2~10。研究结果表明,水平合成射流能够同时降低上、下游圆柱的升、阻力系数,但过大的合成射流动量系数反而会导致上、下游圆柱的阻力系数均大于无合成射流控制情况下的值。当动量系数为2和4时,上游圆柱的尾迹完全由水平合成射流主导,变得完全对称;但下游圆柱的尾部始终存在交替脱落的旋涡。

关键词：双圆柱合成射流受力特性尾涡结构串列

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Simulation Research on Coal-Water Slurry Gasification of Oil-Based Drill Cuttings Based on Fluent

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Energy Engineering 2023年第9期120卷 1963-1977页

作者： Liang Hu Hailong Yu Liuyang Huang Yayun Xu XuleiWu yunlan sun Baozhong Zhu School of Petroleum Engineering Changzhou UniversityChangzhouChina

In this paper,based on Fluent software,a five-nozzle gasifier reactor was established to simulate the gasification process of oil-based drill cuttings coal-water *** influence of concentration and oxygen/carbon atomic ratio on the gasification process of oil-based drill cuttings coal-water slurry was *** results show that when the oxygen flow is constant,the outlet temperature of gasifier decreases,the content of effective gas increases,and the carbon conversion rate decreases with the increase of concentration;When the ratio of oxygen to carbon atoms is constant,the effective gas content rises and the temperature rises with the increase of the concentration,and the carbon conversion rate reaches the maximum value when the concentration of oil-based drill cuttings coal-water slurry is 65%;When the concentration is constant,the effective gas content decreases and the outlet temperature rises with the increase of the oxygen/carbon atom ratio,and the carbon conversion rate reaches 99.80%when the oxygen/carbon atom ratio is *** shows that this method can effectively decompose the organic matter in oilbased drill cuttings and realize the efficient and cooperative treatment of oil-based drill cuttings.

关键词： Oil-base drill cuttings coal-water slurry gasification furnace numerical simulation fluent

Progress on Heat Transfer in Fractures of Hot Dry Rock Enhanced Geothermal System

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Energy Engineering 2021年第4期118卷 797-823页

作者： Yiya Wang Hailong Yu Shucheng Wu Li Liu Liuyang Huang Baozhong Zhu yunlan sun Enhai Liu School of Petroleum Engineering Changzhou UniversityChangzhouChina

Hot Dry Rock(HDR)is the most potential renewable geothermal energy in the *** Geothermal System(EGS)is the most effective method for the development and utilization of HDR resources,and fractures are the main flow channels and one of the most important conditions for studying heat transfer process of ***,the heat transfer process and the heat transfer mechanism in fractures of EGS have been the hot spots of *** to the particularity of the mathematical models of heat transfer,research in this field has been at an exploratory stage,and its methods are mainly experimental tests and numerical *** paper introduces the progress on heat transfer in fractures of Hot Dry Rock EGS in detail,provides a comparative analysis of the research results and prospects for future research directions:It is suggested that relevant scholars should further study the mathematical equations which are applicable to engineering construction of seepage heat transfer in irregular fractures of the rock mass,the unsteady heat transfer process between multiple fractures of the rock mass and the heat transfer mechanism of the complex three-dimensional models of EGS.

关键词： Hot Dry Rock seepage heat transfer mathematical equations numerical simulation fractures

新工科背景下能源与动力专业人才创新创业能力提升策略

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创新创业理论研究与实践 2024年第18期7卷 148-151页

作者：刘俊朱宝忠孙运兰彭剑汪波樊利军常州大学石油与天然气工程学院.能源学院湖北中冶窑炉有限公司

随着新工科建设和“双碳”目标的提出，社会及企业对高校培养的能源与动力专业人才的创新能力提出了更高的要求。该文从分析能源与动力专业人才创新创业能力培养现状出发，提出通过创新思维培养构建“双师型”师资队伍、积极参加学科竞... 详细信息

随着新工科建设和“双碳”目标的提出，社会及企业对高校培养的能源与动力专业人才的创新能力提出了更高的要求。该文从分析能源与动力专业人才创新创业能力培养现状出发，提出通过创新思维培养构建“双师型”师资队伍、积极参加学科竞赛与创新创业大赛、加强校企合作与实习基地建设等方案，提升学生的创新创业能力，实现对创新型能源动力类人才的培养。

关键词：新工科 “双碳” 创新创业能力能源与动力工程 “双师型” 学科竞赛提升策略

不同气化剂对等离子体处理油基钻屑气化过程影响的试验研究

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工业安全与环保 2024年第1期50卷 95-99页

作者：徐亚运于海龙陈海群郑和吴波孙运兰常州大学石油与天然气工程学院能源学院江苏常州213164 中石化华东石油工程公司江苏南京210019

为更好地资源化、无害化处理油基钻屑,提高资源利用率,创新性地提出使用等离子体气化熔融处理油基钻屑的方法,该技术采用热解和热脱附双重原理,具有处理彻底、无二次污染、减容率高等优点。在自主开发的撬装式高温等离子体气化熔融处理... 详细信息

为更好地资源化、无害化处理油基钻屑,提高资源利用率,创新性地提出使用等离子体气化熔融处理油基钻屑的方法,该技术采用热解和热脱附双重原理,具有处理彻底、无二次污染、减容率高等优点。在自主开发的撬装式高温等离子体气化熔融处理试验装置上进行了系列研究,以CO_(2)、O_(2)、空气3种气体作为气化剂,通过改变气化剂种类和体积流量,分析其对气化效果的影响,最终确定3种气化剂的最优运行参数分别为CO_(2)体积流量3.6 m^(3)/h,氧气当量比ER 0.2,空气体积流量6.0 m^(3)/h。

关键词：油基钻屑等离子体气化剂流量气化效果