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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

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

A Gasification Technology to Combine Oil Sludge with Coal-Water Slurry:CFD Analysis and Performance Determination

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Fluid Dynamics & Materials Processing 2024年第7期20卷 1481-1498页

作者： Xulei Wu Hailong Yu Panrong Wu Chaoqian Wang Haiqun Chen yunlan sun He Zheng School of Petroleum Engineering Changzhou UniversityChangzhouChina Sinopec East China Petroleum Engineering Company NanjingChina

The development of more environment-friendly ways to dispose of oil sludge is currently regarded as a hot *** this context,gasification technologies are generally seen as a promising way to combine oil sludge with coal–water slurry(CWS)and generate resourceful *** this study,a novel five-nozzle gasifier reactor was analyzed by means of a CFD(Computational fluid dynamic)*** several influential factors,special attention was paid to the height-to-diameter ratio of the gasifier and the mixing ratio of oil sludge,which are known to have a significant impact on the flow field,temperature distribution and gasifier *** to the numerical results,the optimal height-to-diameter ratio and oil mixing ratio are about 2.4:1 and 20%,***,the carbon conversion rate can become as high as 98.55%with the hydrolysis rate reaching a value of 53.88%.The consumption of raw coal and oxygen is generally reduced,while the effective gas production is increased to 50.93 mol/%.

关键词： Oil sludge coal water slurry gasification 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

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铝/正庚烷基纳米流体燃料的着火特性

过程工程学报 2018年第4期18卷 769-773页

作者：韩伟康孙运兰朱宝忠安徽工业大学能源与环境学院

采用挂滴法研究了纳米铝粉及表面活性剂（油酸）浓度对正庚烷基纳米流体燃料着火特性的影响,用热电偶测量了管式电阻炉内温度为500℃时液滴及其附近的气相温度随时间的变化.结果表明,随油酸浓度增加,纳米流体燃料的着火温度显著升高;随... 详细信息

采用挂滴法研究了纳米铝粉及表面活性剂（油酸）浓度对正庚烷基纳米流体燃料着火特性的影响,用热电偶测量了管式电阻炉内温度为500℃时液滴及其附近的气相温度随时间的变化.结果表明,随油酸浓度增加,纳米流体燃料的着火温度显著升高;随纳米铝粉浓度增加,纳米流体着火温度明显降低.

关键词：纳米铝粉油酸正庚烷纳米流体燃料着火特性

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乙醇基纳米流体燃料液滴着火燃烧研究

燃烧科学与技术 2017年第5期23卷 465-470页

作者：王琪朱宝忠孙运兰韩伟康安徽工业大学能源与环境学院马鞍山243002

采用挂滴法研究了在高温条件下纳米铝粉质量分数及粒径对乙醇基纳米流体燃料液滴着火特性及燃烧过程的影响.研究结果表明,与乙醇燃料相比,添加50,nm铝粉质量分数为0.5%,和2.5%,的乙醇基纳米流体燃料液滴的着火延迟时间分别降低了0.315,s... 详细信息

采用挂滴法研究了在高温条件下纳米铝粉质量分数及粒径对乙醇基纳米流体燃料液滴着火特性及燃烧过程的影响.研究结果表明,与乙醇燃料相比,添加50,nm铝粉质量分数为0.5%,和2.5%,的乙醇基纳米流体燃料液滴的着火延迟时间分别降低了0.315,s和0.525,s,着火温度分别降低了12.712,℃和42.214,℃.增大纳米铝粉粒径至100,nm,当添加的铝粉质量分数为2.5%,时,其液滴着火延迟时间比乙醇降低了0.42,s,两种粒径的纳米流体燃料着火温度相近.乙醇及乙醇基纳米流体燃料液滴燃烧火焰分为3个阶段:着火燃烧阶段、火焰熄灭阶段和二次燃烧阶段.随纳米铝粉含量增加,在二次燃烧阶段纳米流体燃料液滴火焰亮点增多,火焰燃烧剧烈,其中含50,nm铝粉的纳米流体燃料比含100,nm铝粉的纳米流体燃料燃烧剧烈.

关键词：纳米流体燃料液滴着火延迟着火温度燃烧火焰

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纳米铝粉在水蒸气中的燃烧特性

燃烧科学与技术 2014年第4期20卷 373-376页

作者：朱宝忠李浩史少辉孙运兰安徽工业大学能源与环境学院马鞍山243002

针对粒径对纳米铝粉燃烧性能的影响,研究了不同粒径的纳米铝粉在水蒸气气氛中的燃烧特性,同时与其在空气气氛中的燃烧特性进行比较.结果表明,纳米铝粉粒径对其在水蒸气气氛中的着火温度影响较大,但对其燃烧的最高温度影响较小.纳米铝粉... 详细信息

针对粒径对纳米铝粉燃烧性能的影响,研究了不同粒径的纳米铝粉在水蒸气气氛中的燃烧特性,同时与其在空气气氛中的燃烧特性进行比较.结果表明,纳米铝粉粒径对其在水蒸气气氛中的着火温度影响较大,但对其燃烧的最高温度影响较小.纳米铝粉在水蒸气气氛中的着火温度比在空气气氛中的着火温度低,且最高温度也低.从燃烧现象可以发现,纳米铝粉在空气气氛中比在水蒸气气氛中燃烧剧烈,火焰亮度更强.此外,还采用扫描电镜与能谱分析联用技术对纳米铝粉在不同气氛中的燃烧产物进行了分析.

关键词：纳米铝粉水蒸气燃烧特性

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铝/乙醇基纳米浆体燃料的着火燃烧特性研究

过程工程学报 2022年第6期22卷 811-818页

作者：郭朋陈维齐孙运兰朱宝忠常州大学石油工程学院江苏常州213164

为了明确纳米铝粉从低浓度到高浓度变化对液体碳氢燃料着火燃烧特性的影响,采用液滴悬挂法研究了不同温度下(700~800℃)乙醇液滴和添加不同浓度(2.5wt%,10wt%,15wt%和20wt%)纳米铝粉的铝/乙醇基纳米浆体燃料液滴的着火燃烧特性。利用高... 详细信息

为了明确纳米铝粉从低浓度到高浓度变化对液体碳氢燃料着火燃烧特性的影响,采用液滴悬挂法研究了不同温度下(700~800℃)乙醇液滴和添加不同浓度(2.5wt%,10wt%,15wt%和20wt%)纳米铝粉的铝/乙醇基纳米浆体燃料液滴的着火燃烧特性。利用高速摄影系统捕捉了液滴整个燃烧过程,分析了其液滴寿命。通过热电偶对液滴附近气相温度的测量,获得了其着火性能参数。结果表明,添加纳米铝粉可以改善乙醇液滴的着火性能。不同铝粉浓度改善效果不同,低浓度时效果较好,着火延迟时间显著缩短,点火温度明显降低。随温度升高,乙醇及添加纳米铝粉的铝/乙醇基纳米浆体燃料液滴着火延迟时间及着火温度均明显降低。纳米铝粉(S2)对乙醇(S1)着火延迟时间和液滴寿命的降幅在750℃最大,其降幅分别达42.20%和18.43%。纳米铝粉(S3)着火温度降低,其最大降低幅度也出现在750℃,相对于乙醇(S1)降低幅度达28.57%。一定铝粉浓度范围内,液滴微爆炸程度和微爆炸时长随铝粉浓度升高而增大,但铝粉浓度超过10wt%后趋势变得平稳。

关键词：乙醇铝粉浓度着火燃烧性能液滴寿命微爆炸