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学者姓名：李卫东
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Abstract ：
当液氨管道处于事故泄漏、停输超压或计划维护等情况时,可采用泄放的方式对管内液氨进行泄压回收.由于氨的高体积膨胀性,其泄放过程的节流效应会导致管内温度骤降,加剧管道受冷收缩和脆性断裂的风险.针对目前液氨管道泄放特性研究不足,参考国内外相关设计和运行参数,建立液氨管道泄放仿真模型,探讨管长、管径和操作条件(温度、压力)影响下的泄放特征参数发展规律.研究结果表明:随着管道长度减小,泄放初期管内压降和温降增大,泄放过程压力和温度随时间下降幅度增加;随着管径减小,泄放口初始压力和温度下降幅度增大,泄放时间和泄放最低温度减小;管道运行压力对整体泄放过程影响较小;管道运行温度越低,泄放口初始温降越大,泄放所需时间越长.研究成果将为液氨管道紧急泄放的安全控制和应急方案的制定提供重要依据.
Keyword ：
仿真模拟 仿真模拟 影响因素 影响因素 泄放 泄放 液氨管道 液氨管道 特征参数 特征参数
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| GB/T 7714 | 尹鹏博 , 林涌滨 , 滕霖 et al. 液氨管道泄放特性及影响因素研究 [J]. | 化学工程 , 2025 , 53 (2) : 78-83 . |
| MLA | 尹鹏博 et al. "液氨管道泄放特性及影响因素研究" . | 化学工程 53 . 2 (2025) : 78-83 . |
| APA | 尹鹏博 , 林涌滨 , 滕霖 , 李卫东 , 黄鑫 , 李臻超 et al. 液氨管道泄放特性及影响因素研究 . | 化学工程 , 2025 , 53 (2) , 78-83 . |
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氨作为高效的储氢载体,具有替代化石燃料能源的巨大潜力.利用成品油管道增输液氨,可充分利用管道运能,节约输送成本.液氨-成品油混合体系的相平衡问题对于管输工艺具有重要意义,此外减压过程会引起更为复杂的相变问题.针对液氨-成品油混合体系进行实验研究,初步阐述了氨/油(体积比)和含水率对液氨-成品油混合体系相平衡和减压相变的影响规律,得到了液氨-成品油混合体系的相平衡压力,揭示了液氨-成品油混合体系减压过程的相变现象.研究发现,在0～30℃,氨-油混合体系的平衡蒸气压小于两种纯组分的饱和蒸气压,而在-2～0℃大于纯液氨的饱和蒸气压,并在氨/油(体积比)为70∶30时达到最大值.同时水分的存在会降低氨-油混合体系的平衡蒸气压.氨-油无水混合体系在减压过程中会产生气泡,压力越低气泡增多,发泡行为越剧烈.含水液氨-成品油混合体系在减压过程中会产生液滴群,并慢慢变大且聚并,在减压结束后聚并形成大液滴留在底部.上述研究成果对成品油管道增输液氨技术发展和应用具有重要的理论指导意义.
Keyword ：
成品油 成品油 液氨 液氨 相变 相变 相平衡 相平衡
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| GB/T 7714 | 黄鑫 , 李逸龙 , 李卫东 et al. 液氨-成品油混合体系相平衡及减压相变规律研究 [J]. | 化工学报 , 2025 , 76 (1) : 71-80 . |
| MLA | 黄鑫 et al. "液氨-成品油混合体系相平衡及减压相变规律研究" . | 化工学报 76 . 1 (2025) : 71-80 . |
| APA | 黄鑫 , 李逸龙 , 李卫东 , 施鸿翔 , 尹鹏博 , 李臻超 et al. 液氨-成品油混合体系相平衡及减压相变规律研究 . | 化工学报 , 2025 , 76 (1) , 71-80 . |
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将一定比例的氢气掺入天然气中并通过现有天然气管道进行输送是大规模输氢的有效方式.氢气点火能量低,爆炸范围广,扩散燃烧速度快,掺氢天然气发生燃烧爆炸事故的危害性较常规天然气更大.为探究掺氢天然气管道阀室发生泄漏后的燃烧爆炸规律,采用计算流体力学软件FLACS对受限空间内输气管道法兰连接处破损后混合气体的泄漏、扩散、燃烧、爆炸过程进行了模拟研究.结果表明:气体泄漏后爆炸时混合气体中氢气含量越高,泄漏后气云点火时间越长,爆炸的强度及危害程度越大;顺风向气云爆燃强度显著强于逆风向气云燃爆强度;不同阀室结构会产生不同强度的爆炸超压,泄爆墙对降低阀室燃爆危害的作用有限,露天阀室和棚式阀室结构产生的爆炸危害较小.
Keyword ：
FLACS FLACS 掺氢天然气 掺氢天然气 燃烧爆炸 燃烧爆炸 管道输氢 管道输氢 阀室 阀室
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| GB/T 7714 | 廖丽君 , 杨杨 , 李卫东 et al. 掺氢天然气管道阀室泄漏爆炸规律研究 [J]. | 西安石油大学学报（自然科学版） , 2025 , 40 (1) : 106-114 . |
| MLA | 廖丽君 et al. "掺氢天然气管道阀室泄漏爆炸规律研究" . | 西安石油大学学报（自然科学版） 40 . 1 (2025) : 106-114 . |
| APA | 廖丽君 , 杨杨 , 李卫东 , 李慧源 , 谢镔 , 单志伟 et al. 掺氢天然气管道阀室泄漏爆炸规律研究 . | 西安石油大学学报（自然科学版） , 2025 , 40 (1) , 106-114 . |
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Wax deposition of diesel oil and contamination of gasoline by diesel wax deposit is a severe problem in sequential transportation of product oil in pipes. However, it has long been neglected by the pipeline transportation industry. In response, this work aims to present a unique perspective on wax deposition of diesel oil and consequent contamination of gasoline. A cold finger apparatus was designed and constructed. Model oil composed of diesel and refined wax was prepared for wax deposition. Shear dispersion was excluded for wax deposition of diesel oil. Moreover, dissolution experiments of diesel wax deposit in gasoline were conducted. It was found that the dissolution rate increases with oil temperature and decreases with cold finger temperature and shear stress. Analysis on gasoline quality after diesel wax deposit dissolution indicated that contamination of gasoline caused by diesel wax deposit severely deteriorates its distillation range, but the octane number remains acceptable. This work features an interesting investigation on the wax-deposition mechanism of diesel oil, dissolution characteristics of diesel wax deposit, as well as quality deterioration of subsequent gasoline. It would be helpful in scheduling a product oil-transportation program. © 2024 by the authors.
Keyword ：
contamination of gasoline contamination of gasoline distillation range distillation range octane number octane number product oil pipeline product oil pipeline wax deposition of diesel wax deposition of diesel
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| GB/T 7714 | Li, W. , Xie, L. , Du, S. et al. Wax Deposition of Diesel Oil and Consequent Contamination of Gasoline in Sequential Transportation of Product Oil Pipeline [J]. | Energies , 2024 , 17 (17) . |
| MLA | Li, W. et al. "Wax Deposition of Diesel Oil and Consequent Contamination of Gasoline in Sequential Transportation of Product Oil Pipeline" . | Energies 17 . 17 (2024) . |
| APA | Li, W. , Xie, L. , Du, S. , Zhang, H. , Mo, J. , Wei, S. et al. Wax Deposition of Diesel Oil and Consequent Contamination of Gasoline in Sequential Transportation of Product Oil Pipeline . | Energies , 2024 , 17 (17) . |
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采用成品油管道顺序输送甲醇不仅可以拓展甲醇运输方式、降低运输成本，还能够提升管道运力、缓解现有成品油管道低输量难题，但目前成品油管道顺序输送甲醇工艺相关研究鲜有报道，技术的推广和应用受限。针对顺序输送过程中的混油问题，结合ALE(Arbitrary LagrangianEulerian)方法、流体控制方程以及物质传递方程，建立了甲醇和汽油顺序输送混油模型，分析了输送次序和管道流速对甲醇和汽油顺序输送过程中混油长度和混油浓度演化的影响规律。研究表明，该模型模拟的混油长度略短于VOF（流体体积）方法，在实际顺序输送过程中选择甲醇前行汽油后行的输送次序，能够有效缩短混油长度。研究结论可为成品油管道顺序输送甲醇工艺提供理论指导。
Keyword ：
ALE方法 ALE方法 数值模拟 数值模拟 混油扩散 混油扩散 甲醇输送 甲醇输送
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| GB/T 7714 | 黄鑫 , 施鸿翔 , 王良旭 et al. 水平管道中甲醇和汽油顺序输送过程混油规律研究 [J]. | 油气与新能源 , 2024 , 36 (04) : 57-66 . |
| MLA | 黄鑫 et al. "水平管道中甲醇和汽油顺序输送过程混油规律研究" . | 油气与新能源 36 . 04 (2024) : 57-66 . |
| APA | 黄鑫 , 施鸿翔 , 王良旭 , 李卫东 , 李加庆 , 尹鹏博 et al. 水平管道中甲醇和汽油顺序输送过程混油规律研究 . | 油气与新能源 , 2024 , 36 (04) , 57-66 . |
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Wax deposition of diesel oil and contamination of gasoline by diesel wax deposit is a severe problem in sequential transportation of product oil in pipes. However, it has long been neglected by the pipeline transportation industry. In response, this work aims to present a unique perspective on wax deposition of diesel oil and consequent contamination of gasoline. A cold finger apparatus was designed and constructed. Model oil composed of diesel and refined wax was prepared for wax deposition. Shear dispersion was excluded for wax deposition of diesel oil. Moreover, dissolution experiments of diesel wax deposit in gasoline were conducted. It was found that the dissolution rate increases with oil temperature and decreases with cold finger temperature and shear stress. Analysis on gasoline quality after diesel wax deposit dissolution indicated that contamination of gasoline caused by diesel wax deposit severely deteriorates its distillation range, but the octane number remains acceptable. This work features an interesting investigation on the wax-deposition mechanism of diesel oil, dissolution characteristics of diesel wax deposit, as well as quality deterioration of subsequent gasoline. It would be helpful in scheduling a product oil-transportation program.
Keyword ：
contamination of gasoline contamination of gasoline distillation range distillation range octane number octane number product oil pipeline product oil pipeline wax deposition of diesel wax deposition of diesel
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| GB/T 7714 | Li, Weidong , Xie, Lin , Du, Shengping et al. Wax Deposition of Diesel Oil and Consequent Contamination of Gasoline in Sequential Transportation of Product Oil Pipeline [J]. | ENERGIES , 2024 , 17 (17) . |
| MLA | Li, Weidong et al. "Wax Deposition of Diesel Oil and Consequent Contamination of Gasoline in Sequential Transportation of Product Oil Pipeline" . | ENERGIES 17 . 17 (2024) . |
| APA | Li, Weidong , Xie, Lin , Du, Shengping , Zhang, Hanqing , Mo, Jiazong , Wei, Shulong et al. Wax Deposition of Diesel Oil and Consequent Contamination of Gasoline in Sequential Transportation of Product Oil Pipeline . | ENERGIES , 2024 , 17 (17) . |
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The droplet dynamic model under an electric field is established in this paper by coupling electric equations, multiphase flow equations, and isoAdvector interface capture method, accurately predicting the deformation and rupture characteristics of multiple emulsion droplets affected by an electric field. The evolutions of the flow field and electric field during the deformation and breakup processes of multiple emulsion droplets subjected to an electric field are elucidated and the effects of the electric capillary number Ca and the radius ratio R* of the inner and outer droplets on the characteristics of droplet deformation and rupture are analyzed. The results show that in the silicone oil/water emulsion system, the inner droplet is difficult to induce charge since the electrostatic shielding effect of the outer droplet, and it has no impact on the equilibrium deformation of the outer droplet; whereas in the castor oil/silicone oil emulsion system, the charge is induced on the interfaces of both the internal and external droplets and the internal droplet has a remarkable impact on the equilibrium deformation of the external droplet. Furthermore, deformation-breakup phase diagrams of multiple emulsion droplets exposed to the electric field are obtained. As R* increases, the Cac for droplet breakup decreases, indicating that the internal droplet intensifies the breakup of the external droplet. The results are significant for the promotion and application of electric field-driven droplet manipulation technology.
Keyword ：
Breakup Breakup Deformation Deformation Electric field Electric field isoAdvector isoAdvector Multiple emulsion Multiple emulsion
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| GB/T 7714 | Huang, Xin , Lu, Yijia , Li, Yilong et al. The isoAdvector method for simulating deformation and breakup of multiple emulsion droplets responding to a DC electric field [J]. | JOURNAL OF ELECTROSTATICS , 2024 , 129 . |
| MLA | Huang, Xin et al. "The isoAdvector method for simulating deformation and breakup of multiple emulsion droplets responding to a DC electric field" . | JOURNAL OF ELECTROSTATICS 129 (2024) . |
| APA | Huang, Xin , Lu, Yijia , Li, Yilong , Luo, Xiaoming , Teng, Lin , Li, Weidong et al. The isoAdvector method for simulating deformation and breakup of multiple emulsion droplets responding to a DC electric field . | JOURNAL OF ELECTROSTATICS , 2024 , 129 . |
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二甲醚(DME)作为燃料具有来源广、可再生和低碳等优点，已成为最具潜力的内燃机和燃气轮机替代燃料。然而，关于DME燃烧机理的研究仍然不够深入。通过使用带有误差传播和敏感性分析的有向关系图法(DRGEPSA)对现有的高压条件下的DME燃烧详细机理进行简化获得了骨架机理(Mech＿191)，然后通过调整指前因子对Mech＿191进行优化获得了简化机理。将应用简化机理获得的指征DME燃烧的重要参数(点火延迟时间和层流火焰速度)的预测值与文献值进行了对比。结果表明，简化机理的预测值与文献值高度吻合，验证了该机理在模拟DME燃烧特性方面的有效性。此外，还发现部分关键反应(如·CH_3OCH_2的消耗反应)的确定对于准确获取重要燃烧参数有重要作用。
Keyword ：
DRGEPSA方法 DRGEPSA方法 二甲醚燃烧机理 二甲醚燃烧机理 层流火焰速度 层流火焰速度 点火延迟时间 点火延迟时间
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| GB/T 7714 | 滕霖 , 单志伟 , 李卫东 et al. 二甲醚燃烧机理简化与燃烧特性验证 [J]. | 低碳化学与化工 , 2024 , 49 (05) : 62-71 . |
| MLA | 滕霖 et al. "二甲醚燃烧机理简化与燃烧特性验证" . | 低碳化学与化工 49 . 05 (2024) : 62-71 . |
| APA | 滕霖 , 单志伟 , 李卫东 , 尹鹏博 . 二甲醚燃烧机理简化与燃烧特性验证 . | 低碳化学与化工 , 2024 , 49 (05) , 62-71 . |
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管道运输是液氨最为经济的长距离输送方式,液氨管道输送标准化是保障管道规范建设、运营和维护的重要环节,而国内现行标准中有关液氨管道输送技术的信息较少.为此,系统分析了国内外液氨管道建设现状和现行液氨管道输送技术标准,重点探讨了相关标准中输送工艺、线路、管道(管道附件、支撑件)设计和输氨站等方面规定的异同点,并提出了适用性建议.对于液氨管道质量要求、介质流速、管材选择、腐蚀裕量和站场防护设施等方面可分别参照GB/T 536、GB 50253、SY/T 7629、SH/T 3074和美国ASMEB31.4等标准执行.对于液氨管道的埋地管道净距、地区等级划分、截断阀室最大间距、站场防火间距和站场安全泄放等方面可参考规定相对严格的油气管道相关标准法规(GB51142、GB50253、GB50160和美国29CFR1910.111等)执行.考虑到液氨的毒性、扩散特征和防控措施与油气存在一定差异,建议开展液氨泄漏扩散和安全泄放风险评估及预测的研究,对适用于液氨场景的间距取值及规定开展进一步论证.
Keyword ：
标准化发展 标准化发展 标准对比 标准对比 液氨 液氨 管道输送 管道输送
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| GB/T 7714 | 尹鹏博 , 曾培琰 , 滕霖 et al. 国内外液氨管道输送技术标准对比分析 [J]. | 低碳化学与化工 , 2024 , 49 (11) : 81-89 . |
| MLA | 尹鹏博 et al. "国内外液氨管道输送技术标准对比分析" . | 低碳化学与化工 49 . 11 (2024) : 81-89 . |
| APA | 尹鹏博 , 曾培琰 , 滕霖 , 李加庆 , 李卫东 , 黄鑫 et al. 国内外液氨管道输送技术标准对比分析 . | 低碳化学与化工 , 2024 , 49 (11) , 81-89 . |
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Wax deposition of crude oil is a widespread issue in oil production and transportation systems, with over 80% of internationally produced oil exhibiting waxy characteristics. When the oil temperature decreases below its wax appearance temperature, wax components precipitate and form wax crystals. Waxy crude oil pipelines typically employ heated transportation processes. During transportation, heat is dissipated to the surrounding environment, resulting in a temperature gradient within the crude oil. This, in turn, induces a concentration gradient of wax components, leading to the formation of wax deposits on the pipeline wall. The accumulation of wax deposits can reduce operational efficiency and increase energy consumption. In the worst case, it may result in pipeline overpressure, blockage and even rupture, and failure to address the issue could pose serious safety risks and cause significant economic losses. The total length of crude oil pipelines in China has exceeded 110000 km, and wax prevention technology has always been a key focus in the petroleum industry. Traditional methods for preventing wax deposition include mechanical pigging, thermal cleaning, and chemical additive addition. These methods often come with high costs, complicated procedures, low efficiency, and environmental concerns. Based on the inherent properties of new materials and surface modifications, recent advancements in materials science have brought new progress to wax control. These new technologies not only offer efficient wax prevention and inhibition, but also exhibit broader applicability, making them suitable for more stringent operational conditions. Additionally, composite pipes, surface coatings, and pipes modified through chemical and electrochemical surface treatments typically demonstrate enhanced corrosion resistance, which can extend the service life of pipelines while offering certain cost advantages. This paper provides a comprehensive review of the latest advancements, ongoing challenges, and future directions in wax deposition prevention technologies, with a particular focus on pipeline materials and surface modifications. It begins with an overview of non-metallic and composite materials used in wax prevention, highlighting those with low surface energy, high corrosion resistance and wear resistance. The review emphasizes the potential of these materials to mitigate wax deposition and enhance pipeline longevity. Furthermore, the paper discusses the wax prevention mechanisms and effectiveness of various functional coatings, including low-surface-energy coatings, biomimetic coatings, and organic gel coatings. Their respective advantages and limitations are also concluded. Additionally, surface modification techniques are discussed, with an emphasis on chemical and electrochemical approaches. Chemical treatments alter the hydrophilic or lipophilic properties of the pipeline surface to inhibit wax deposition, while electrochemical methods use electrical currents or fields to modify the adhesion of wax components. The challenges in current wax prevention technologies are also identified, including material durability, costeffectiveness, and environmental impact. In the future, the novel materials, smart coatings, and advanced surface modifications demonstrate great potential in the field of wax deposition management. Up to date, there has been a lack of comprehensive reviews on this subject, resulting in the absence of systematic analyses and summaries of relevant technologies. This paper seeks to fill this gap by providing a clear and concise overview of the current state of wax prevention technology development. It aims to offer valuable insights for researchers, scholars, and industry practitioners, informing future research directions and practical considerations for field operations.
Keyword ：
chemical modification chemical modification electrochemical modification electrochemical modification non-metallic materials non-metallic materials pipeline coatings pipeline coatings wax prevention technology wax prevention technology
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| GB/T 7714 | Fan, Kaifeng , Zhu, Xinyue , Yu, Chunhao et al. Advances in pipeline wax inhibition technology based on material properties and surface modifications [J]. | CHINESE SCIENCE BULLETIN-CHINESE , 2024 , 69 (36) : 5259-5270 . |
| MLA | Fan, Kaifeng et al. "Advances in pipeline wax inhibition technology based on material properties and surface modifications" . | CHINESE SCIENCE BULLETIN-CHINESE 69 . 36 (2024) : 5259-5270 . |
| APA | Fan, Kaifeng , Zhu, Xinyue , Yu, Chunhao , Huang, Jun , Zhou, Shidong , Lei, Yun et al. Advances in pipeline wax inhibition technology based on material properties and surface modifications . | CHINESE SCIENCE BULLETIN-CHINESE , 2024 , 69 (36) , 5259-5270 . |
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