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学者姓名：李卫东
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Abstract ：
回收废塑料用于沥青改性对实现废塑料资源化利用和提升基质沥青性能具有重要意义,因而受到废塑料处理和道路沥青领域研究人员的广泛关注.本文着眼于废塑料与基质沥青的相容性问题和废塑料改性沥青的性能变化,系统阐述了废塑料的回收利用现状及其在沥青领域的应用成果,归纳总结了废塑料改性沥青相容性的表征方法和性能提升方式,梳理和分析了废塑料湿法改性沥青的高低温性能、流变特性、抗疲劳性能和抗老化特性等的研究成果.综合沥青性能和研究现状提出了废塑料改性沥青的研究建议:通过多尺度研究明确废塑料对沥青改性的作用机理,探究废塑料结构与改性沥青性能间的构效关系,确定提升废塑料改性沥青相容性和低温性能的低成本方式,结合废塑料改性沥青相容性及抗老化性等特点丰富其性能评价体系.
Keyword ：
废塑料 废塑料 改性沥青 改性沥青 流变学 流变学 离析 离析 颗粒物料 颗粒物料
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| GB/T 7714 | 张东旭 , 么强 , 黑树楠 et al. 废塑料改性沥青相容性及性能分析研究进展 [J]. | 化工进展 , 2025 , 44 (3) : 1651-1665 . |
| MLA | 张东旭 et al. "废塑料改性沥青相容性及性能分析研究进展" . | 化工进展 44 . 3 (2025) : 1651-1665 . |
| APA | 张东旭 , 么强 , 黑树楠 , 李卫东 , 刘成 , 李志军 et al. 废塑料改性沥青相容性及性能分析研究进展 . | 化工进展 , 2025 , 44 (3) , 1651-1665 . |
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Recycling of waste plastics for asphalt modification is important to achieve the resourceful use of waste plastics and improve base asphalt properties. Therefore, it has received wide attention in the field of waste plastics processing and asphalt pavement. This paper focused on the compatibility and the performance of waste plastic modified asphalt. Current situation of waste plastics and its application in the field of asphalts was systematically described. The characterization and enhancement methods of compatibility of waste plastic modified asphalt were summarized. Moreover, the research results of high and low temperature properties, rheological, fatigue and aging properties of waste plastic modified asphalt were reviewed and analyzed. Comprehensive asphalt performance and the research status put forward the research recommendations. In the future, the mechanism of waste plastics used in asphalt modification should be clarified through multi-scale methods. The constitutive relationship between waste plastic structure and asphalt properties should be investigated. In addition, low-cost ways to improve the compatibility and low-temperature performance of waste plastic modified asphalt should be identified and the performance evaluation system should be enriched by combining the characteristics of modified asphalt including compatibility and aging property. © 2025 Chemical Industry Press Co., Ltd.. All rights reserved.
Keyword ：
Asphalt Asphalt Asphalt pavements Asphalt pavements Plastic recycling Plastic recycling Plastics Plastics Plastics industry Plastics industry
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| GB/T 7714 | Zhang, Dongxu , Yao, Qiang , Hei, Shunan et al. Compatibility and performance analysis of waste plastic modified asphalts: A review [J]. | Chemical Industry and Engineering Progress , 2025 , 44 (3) : 1651-1665 . |
| MLA | Zhang, Dongxu et al. "Compatibility and performance analysis of waste plastic modified asphalts: A review" . | Chemical Industry and Engineering Progress 44 . 3 (2025) : 1651-1665 . |
| APA | Zhang, Dongxu , Yao, Qiang , Hei, Shunan , Li, Weidong , Liu, Cheng , Li, Zhijun et al. Compatibility and performance analysis of waste plastic modified asphalts: A review . | Chemical Industry and Engineering Progress , 2025 , 44 (3) , 1651-1665 . |
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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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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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碳中和背景下,氨-氢混合无碳燃料备受关注,但合成氨与氨分解制氢过程也存在着氨-氢混合燃爆的风险.目前对氨-氢燃烧爆炸详细机理的研究不够充分,传统的详细机理十分复杂,计算耗时过长.为了研究高压下氨-氢混合气体的燃烧爆炸特性,使用零维均质模型(即不考虑空间分布且物理和化学性质均为均匀的简化模型),采用带有误差传播的有向关系图(DRGEP)法简化现有的氨-氢燃烧爆炸详细机理,再通过敏感性分析得到基元反应较少的氨-氢燃烧爆炸简化机理.将简化机理与计算流体动力学(CFD)模型耦合,开展管道内氨-氢燃烧数值模拟.结果表明,简化机理在验证层流火焰速度和点火延迟时间等方面表现出良好的性能.在爆破压力为 59.61 atm 和 69.97 atm下,平均激波速度的相对误差低于 1.4%,精度较高;且与简化机理耦合的CFD模型节约了计算资源.研究成果有助于推动氨-氢燃烧CFD模拟技术的发展,可为氨-氢混合无碳燃料的燃烧过程及爆炸防控提供理论指导.
Keyword ：
化学动力学 化学动力学 反应机理 反应机理 数值模拟 数值模拟 氨氢燃烧 氨氢燃烧 爆炸 爆炸 简化机理 简化机理
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| GB/T 7714 | 滕霖 , 单志伟 , 李西贵 et al. 基于化学反应动力学的氨-氢混合无碳燃料燃烧爆炸机理研究 [J]. | 油气与新能源 , 2024 , 36 (1) : 72-81 . |
| MLA | 滕霖 et al. "基于化学反应动力学的氨-氢混合无碳燃料燃烧爆炸机理研究" . | 油气与新能源 36 . 1 (2024) : 72-81 . |
| APA | 滕霖 , 单志伟 , 李西贵 , 李卫东 , 罗宇 , 江莉龙 . 基于化学反应动力学的氨-氢混合无碳燃料燃烧爆炸机理研究 . | 油气与新能源 , 2024 , 36 (1) , 72-81 . |
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The evaporation characteristics of a sessile droplet under a direct current electric field were numerically investigated, and a numerical model was developed based on the arbitrary Lagrange-Euler method, combining the flow, heat transfer, vapour transport, and electrostatic equations. The simulations were validated to be in good agreement with previously reported experiments. The results demonstrate that the electric field can enhance the evaporation of the sessile droplet with different evaporative cooling numbers (initial electric field intensity E0 = 280 kV & sdot;m 1; 32.9% decrease in the evaporation time for water) by the following three methods: increasing the surface area of the droplet evaporation (2.6%) through the electric-field-induced deformation, improving the heat transfer efficiency between the droplet and substrate (droplet average temperature increases by 2.3 K) through the internal vortex, and by enhancing the shearing effect on the vapour layer (450.3% increase in vapour diffusion distance dc) through the external vortex. Additionally, the evaporation of a sessile water droplet undergoing thermocapillary convection is further enhanced under the electric field (E0 = 280 kV & sdot;m 1; 20.0% decrease in the evaporation time). As the inhomogeneous temperature distribution inside the droplet was eliminated by thermocapillary convection, the evaporation efficiency was dominated by the increased surface area of the droplet evaporation and the enhanced shearing effect on the vapour layer. These results will provide a better understanding of the electro-hydrodynamic enhanced droplet evaporation.
Keyword ：
ALE ALE Droplet deformation Droplet deformation Droplet evaporation Droplet evaporation Electric field Electric field Numerical simulation Numerical simulation
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| GB/T 7714 | Wang, Weifeng , Huang, Xin , Wang, Liangxu et al. Study on the mechanism of sessile droplets evaporation enhanced by the electric field [J]. | CHEMICAL ENGINEERING SCIENCE , 2024 , 288 . |
| MLA | Wang, Weifeng et al. "Study on the mechanism of sessile droplets evaporation enhanced by the electric field" . | CHEMICAL ENGINEERING SCIENCE 288 (2024) . |
| APA | Wang, Weifeng , Huang, Xin , Wang, Liangxu , Teng, Lin , Luo, Xiaoming , Li, Weidong et al. Study on the mechanism of sessile droplets evaporation enhanced by the electric field . | CHEMICAL ENGINEERING SCIENCE , 2024 , 288 . |
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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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This work proposes an intelligent grey-wolf-optimizer-improved Apriori algorithm (GWO-Apriori) to mine the association rules of hidden dangers in hydrogen pipeline transmission stations. The optimal minimum support and minimum confidence are determined by GWO instead of the time-consuming trial approach. Experiments show that the average support and average confidence of association rules using GWO-Apriori increase by 29.8% and 21.3%, respectively, when compared with traditional Apriori. Overall, 59 ineffective association rules out of the total 105 rules are filtered by GWO, which dramatically improves data mining effectiveness. Moreover, 23 illogical association rules are excluded, and 12 new strong association rules ignored by the traditional Apriori are successfully mined. Compared with the inefficient and labor-intensive manual investigation, the intelligent GWO-Apriori algorithm dramatically improves pertinency and efficiency of hidden danger identification in hydrogen pipeline transmission stations.
Keyword ：
Apriori Apriori association rule mining association rule mining grey wolf optimizer (GWO) grey wolf optimizer (GWO) hidden danger hidden danger hydrogen pipeline transmission station hydrogen pipeline transmission station intelligent identification intelligent identification
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| GB/T 7714 | Wang, Chaoming , Fu, Anqing , Li, Weidong et al. Intelligent Identification of Hidden Dangers in Hydrogen Pipeline Transmission Station Using GWO-Optimized Apriori Algorithm [J]. | ENERGIES , 2024 , 17 (18) . |
| MLA | Wang, Chaoming et al. "Intelligent Identification of Hidden Dangers in Hydrogen Pipeline Transmission Station Using GWO-Optimized Apriori Algorithm" . | ENERGIES 17 . 18 (2024) . |
| APA | Wang, Chaoming , Fu, Anqing , Li, Weidong , Li, Mingxing , Chen, Tingshu . Intelligent Identification of Hidden Dangers in Hydrogen Pipeline Transmission Station Using GWO-Optimized Apriori Algorithm . | ENERGIES , 2024 , 17 (18) . |
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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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