Particuology最新文献_第3页

Morphological convergence in solid-state synthesis: Unveiling the critical role of TiO2 precursor size for high-performance H2TiO3 lithium ion-sieves 固态合成中的形态收敛：揭示TiO2前驱体尺寸对高性能H2TiO3锂离子筛的关键作用

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-08 DOI: 10.1016/j.partic.2025.12.023

Ye Wang, Yuxin Xie, Xiaojing Guo, Xi Yan, Yan Chen, Ping Hu, Peng Cheng, Wanzhong Lang

The solid-state synthesis of H₂TiO₃ (HTO) lithium ion-sieves is highly sensitive to the particle size of the TiO₂ precursor, which governs both structural properties and ultimate adsorption performance. This study reveals a striking morphological convergence during the synthesis of Li₂TiO₃ (LTO) intermediates: despite employing TiO₂ precursors spanning 15–40 nm, the resulting LTO particles consistently exhibited a narrow size range of 28–32 nm, indicating a distinctive size-regulation mechanism in the solid-state reaction. In contrast, precursors ≥60 nm led to fragmented structures with reduced crystallinity. Leveraging this finding, we identified 40 nm as a critical precursor size for crafting optimal HTO adsorbents. The 40 nm-derived HTO (40-HTO) delivered a superior equilibrium Li⁺ adsorption capacity of 58.02 mg g⁻¹, a pseudo-second-order rate constant 2.3-fold higher than that of its 150 nm-derived counterpart, and exceptional cyclic stability (<0.15 % Ti dissolution over 10 cycles). Importantly, in a simulated concentrated brine with a high Mg²⁺/Li⁺ mass ratio of 20, 40-HTO maintained a high Li⁺ uptake of 36.5 mg g⁻¹ and exhibited exceptional selectivity, with a separation factor as high as 780. This work underscores precursor size engineering, targeting a critical size threshold, as a vital strategy for developing high-efficiency lithium ion-sieves.

固态合成的H2TiO3 （HTO）锂离子筛对TiO2前驱体的粒径高度敏感，这决定了其结构性能和最终吸附性能。本研究揭示了Li2TiO3 （LTO）中间体合成过程中惊人的形态收敛：尽管采用了15-40 nm的TiO2前驱体，但所得到的LTO颗粒始终保持在28-32 nm的狭窄尺寸范围内，这表明在固态反应中存在独特的尺寸调节机制。相反，前驱体≥60 nm导致结晶度降低的碎片化结构。利用这一发现，我们确定了40nm作为制作最佳HTO吸附剂的关键前驱体尺寸。40 nm衍生的HTO （40-HTO）具有58.02 mg g - 1的优异平衡Li+吸附容量，伪二级速率常数比150 nm衍生的HTO高2.3倍，并且具有优异的循环稳定性（在10个循环中溶解了0.15%的Ti）。重要的是，在Mg2+/Li+质量比为20的模拟浓盐水中，40-HTO保持了36.5 mg g - 1的高Li+吸收量，并表现出优异的选择性，分离因子高达780。这项工作强调了前驱体尺寸工程，目标是一个临界尺寸阈值，作为开发高效锂离子筛的重要策略。

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引用次数: 0

Toughening modification of bismaleimide resin with a cyano-containing thermoplastic PPENK particles 含氰热塑性PPENK颗粒对双马来酰亚胺树脂的增韧改性

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-08 DOI: 10.1016/j.partic.2025.12.014

Zhiyuan Cheng , Xinbo Dong , Cheng Liu

The 4,4′-bismaleimidodiphenyl-methane (BDM) resin, as one of the most important thermoset resin, exhibits poor toughness, which prevents it from adapting to high technical requirements and hinder its further development. Novel poly (phthalazinone ether nitrile ketone)s (PPENK) with twisted, non-coplanar phthalazinone units and highly polar cyano side groups into the main chain of poly (aryl ether ketone) molecules were synthesized and used to modify the blends of BDM/diallyl bisphenol A (DABPA). The thermal and mechanical properties of modified BDM resin have been investigated thoroughly. The role of cyano group content of PPENK on the mechanical properties of modified BDM resin has been recognized. The impact strength of modified BDM resin reached up to 26.25 kJ/m², and the glass transition temperature can still maintain in a high level, in the range of 280–291 °C, indicating the excellent thermal properties of modified BDM resin. Moreover, the island-structure particles have been analyzed and the toughening mechanism of BDM resin modified by PPENK particles has been revealed. This work provides a new strategy for design of high-performance thermoplastic toughening agents for BDM resin with improved toughness and thermal properties.

4,4′-双马来酰亚胺二苯基甲烷（BDM）树脂是最重要的热固性树脂之一，但其韧性较差，无法适应较高的技术要求，阻碍了其进一步发展。合成了一种新型聚酞嗪酮醚腈酮（PPENK），在聚芳醚酮分子的主链上含有扭曲的非共面酞嗪酮单元和高极性的氰基侧基，并用于改性BDM/双烯丙基双酚A （DABPA）共混物。研究了改性BDM树脂的热性能和力学性能。PPENK的氰基含量对改性BDM树脂力学性能的影响已得到认可。改性BDM树脂的冲击强度可达26.25 kJ/m2，玻璃化转变温度仍能保持在较高的水平，在280 ~ 291℃范围内，表明改性BDM树脂具有优异的热性能。此外，还对海岛结构颗粒进行了分析，揭示了PPENK颗粒改性BDM树脂的增韧机理。本研究为BDM树脂的高性能热塑性增韧剂的设计提供了新的思路。

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引用次数: 0

In-situ measurement of size distribution and concentration in dilute particle flow with digital holographic probe 用数字全息探针原位测量稀颗粒流的粒径分布和浓度

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-03 DOI: 10.1016/j.partic.2025.12.018

Xuecheng Wu, Dian Zhu, Zhiliang Xue, Zhiming Lin, Qiwen Jin

Gas-solid two-phase flows are common in both industrial processes and natural phenomena, and accurately detecting particle properties within these flows is crucial for process optimization and control. However, existing particle detection techniques often struggle to provide in-situ, real-time, and multi-parameter measurements in complex flow environments. To address this challenge, a new digital holographic probe, designed for compactness and 3D measurement capability, is developed in this work. The delicate structure of the probe head makes it suitable for use in pneumatically conveyed particle flows within pipes, with a measurement volume of 435.6 mm³. The measurement performance of the holographic probe has been verified on a pipeline pneumatic transport test platform under various particle size and concentration conditions. Using 3D holographic imaging, the spatial distribution of particles within the measurement volume was analyzed. Experimental results show that the relative deviation of the mass median diameter is less than 3 %, while the relative deviation of the average mass concentration is below 12 %, compared to reference results.

气固两相流在工业过程和自然现象中都很常见，准确检测这些流动中的颗粒特性对于过程优化和控制至关重要。然而，现有的颗粒检测技术往往难以在复杂的流动环境中提供原位、实时和多参数的测量。为了解决这一挑战，本研究开发了一种新型数字全息探头，该探头具有紧凑性和3D测量能力。探头的精致结构使其适用于管道内气动输送的颗粒流，测量体积为435.6 mm3。在管道气力输送试验平台上，对全息探头在不同粒径和浓度条件下的测量性能进行了验证。利用三维全息成像技术，分析了测量体内粒子的空间分布。实验结果表明，与参考结果相比，质量中值直径的相对偏差小于3%，平均质量浓度的相对偏差小于12%。

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引用次数: 0

A key antagonistic effect in alkaline pretreatment of clay-type lithium ores and its targeted control for enhanced lithium enrichment 粘土型锂矿碱预处理的拮抗作用及其对锂富集的调控作用

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-02 DOI: 10.1016/j.partic.2025.12.013

Ziliang Liu, Fuzhong Wu, Xiaodong Lv, Xinyi Dai

Clay-type lithium ores represent a vast, underexploited resource critical for future lithium supply, but their complex mineralogy hinders efficient processing. While alkaline pretreatment is a promising enrichment strategy, its optimization is hampered by elusive regulatory mechanisms. Here, we report a critical non-monotonic response where excessive pretreatment intensity paradoxically suppresses lithium recovery. We identify and verify that this response is governed by a key antagonistic mechanism, termed the Alkali Residue Effect (ARE), where residual alkaline species cause both physical dilution and chemical neutralization. Through response surface methodology (RSM) targeting the mitigation of ARE, we established an optimized processing window that achieves a 4.35-fold lithium enrichment (Li₂O from 0.17 to 0.74 wt%). Microscopic analyses (SEM-EDS, XRD, XPS) confirm the optimized process selectively etches amorphous gangue, enhancing the reactivity of the Li-bearing mineral (cookeite). A techno-economic analysis projects a favorable operating cost of ∼US$81/ton. This study provides a new theoretical framework (ARE) for optimizing complex hydrometallurgical processes by balancing targeted reactions against unintended side effects.

粘土型锂矿石是一种巨大的未开发的资源，对未来的锂供应至关重要，但其复杂的矿物结构阻碍了有效的加工。虽然碱性预处理是一种很有前途的富集策略，但其优化受到难以捉摸的调控机制的阻碍。在这里，我们报告了一个关键的非单调响应，其中过度的预处理强度矛盾地抑制了锂的回收。我们确定并验证了这种反应是由一种关键的拮抗机制控制的，称为碱残留效应（ARE），其中残留的碱性物质导致物理稀释和化学中和。通过针对ARE的响应面法（RSM），我们建立了一个优化的处理窗口，实现了4.35倍的锂富集（Li2O从0.17 wt%增加到0.74 wt%）。微观分析（SEM-EDS， XRD， XPS）证实，优化后的工艺选择性地蚀刻无定形脉石，提高了含锂矿物（cookeite）的反应性。一项技术经济分析预测，有利的运营成本为每吨81美元。该研究为通过平衡目标反应和意外副作用来优化复杂的湿法冶金过程提供了一个新的理论框架。

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引用次数: 0

Key factors in liquid-route synthesis of photovoltaic front-side silver micro-powder: Particle growth modeling coupled with CFD 液路合成光伏前端银微粉的关键因素：颗粒生长模拟与CFD耦合

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-02 DOI: 10.1016/j.partic.2025.12.008

Zepeng Zhu , Qian Zhang , Yiyang Zhang , Yaqin Liao , Qingqing Qiu , Zhong Chen , Shuiqing Li

The performance of photovoltaic cell grids critically depends on the quality of front silver paste, which is significantly influenced by the particle size of the silver powder. Liquid-route continuous synthesis is a highly promising option for the silver micro-powder production. To identify the key factors in synthesis processes impacting on the particle size of the final product, a comprehensive understanding of the continuous liquid-route reduction synthesis mechanisms is required. This study presents a coupled CFD-PBM framework of silver micro-powder synthesis that incorporates flow dynamics, chemical reactions, nucleation, and surface growth processes. The results indicate that the initial reduction rate influences the nucleation of silver powder formation, thereby determining the number of final products. The reduction rate of following stage affects the surface growth, ultimately determining the average size of the products. In a synthesis system with a fixed total reducible silver content, a high initial reduction rate tends to a larger number of smaller silver powder particles produced. Particularly in the ascorbic acid-silver nitrate reduction system, the pH value is a critical factor controlling the distribution of reaction rates. The findings reveal how the reduction rate regulates the final particle size through its influence on nucleation and growth processes, providing insights into controlling powder particle size characteristics by manipulating reaction rates within the continuous synthesis system.

光伏电池栅极的性能关键取决于前端银浆的质量，而前端银浆的质量又受银粉粒度的显著影响。液路连续合成是一种极有前途的银微粉生产方法。为了确定合成过程中影响最终产品粒度的关键因素，需要全面了解连续液路还原合成机制。本研究提出了一种结合流动动力学、化学反应、成核和表面生长过程的耦合CFD-PBM银微粉合成框架。结果表明，初始还原速率影响银粉的成核，从而决定最终产物的数量。后续阶段的还原速率影响表面生长，最终决定产品的平均尺寸。在总可还原银含量固定的合成体系中，初始还原率越高，产生的银粉颗粒越小。特别是在抗坏血酸-硝酸银还原体系中，pH值是控制反应速率分布的关键因素。研究结果揭示了还原速率如何通过其对成核和生长过程的影响来调节最终粒度，为通过操纵连续合成系统中的反应速率来控制粉末粒度特征提供了见解。

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引用次数: 0

Optimization of honeycomb anti-wear structures for water-cooled walls in circulating fluidized beds 循环流化床水冷壁蜂窝抗磨结构优化

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-02 DOI: 10.1016/j.partic.2025.12.007

Ruiqi Bai , Tuo Zhou , Tong Wang , Xinyun Wan , Xin Meng , Man Zhang , Hairui Yang

Erosion of water-cooled walls is a major challenge affecting the reliability and efficiency of circulating fluidized bed (CFB) boilers. To mitigate this issue, this study employs computational particle fluid dynamics (CPFD) simulations to optimize the design of a novel honeycomb anti-wear structure. The results show that honeycomb installation slightly modifies local wall flow but has negligible influence on the overall pressure drop. When positioned in the dense phase region, the honeycomb effectively reduces wall erosion to less than 10 % of its original value at most locations through shielding against particle impingement. Increasing the installation height weakens this effect due to stronger lateral particle motion. Thicker honeycombs enhance protection, with 7 cm achieving optimal performance, while 5 cm is sufficient in the dense phase region. The findings demonstrate that an appropriately designed honeycomb structure can serve as an innovative and effective method to mitigate erosion and extend wall service life. The synergistic combination of this structural design with metallic–ceramic coatings presents a promising strategy for enhancing both durability and heat transfer efficiency in industrial CFB boilers.

水冷壁侵蚀是影响循环流化床锅炉可靠性和效率的主要问题。为了缓解这一问题，本研究采用计算颗粒流体动力学（CPFD）模拟来优化新型蜂窝抗磨结构的设计。结果表明，蜂窝装置对局部壁面流动的影响较小，但对整体压降的影响可以忽略不计。当蜂窝位于致密相区时，通过屏蔽颗粒撞击，在大多数位置有效地将壁面侵蚀降低到原始值的10%以下。增加安装高度会减弱这种效应，因为横向粒子运动更强。较厚的蜂窝增强了保护作用，7厘米达到最佳性能，而在密相区域5厘米就足够了。研究结果表明，适当设计蜂窝结构可以作为一种创新和有效的方法来减轻侵蚀和延长墙体的使用寿命。这种结构设计与金属陶瓷涂层的协同结合为提高工业循环流化床锅炉的耐用性和传热效率提供了一种有前途的策略。

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引用次数: 0

Reducing particle aggregation and pressure drop in vertical hydraulic transport through swirling flow optimization 通过旋流优化降低垂直水力输送中的颗粒聚集和压降

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-02 DOI: 10.1016/j.partic.2025.12.010

Lele Yang , Xiaodong Chen , Ke Zhang , Yue Wu , Peng Li , Jianhou Zhou

In vertical hydraulic conveyance for deep-sea mining, localized particle aggregation can occur due to multiple factors, resulting in increased concentration and degrade transport performance. To mitigate this issue, this study proposes a novel deflector vane-type swirl generator with a simple structure that generates swirling flow without additional operations. A combined computational fluid dynamics (CFD) and discrete element method (DEM) has been used to numerically simulate liquid-solid swirling flow in a vertical pipe featuring the vane. Subsequently, an orthogonal design method was applied to evaluate the effects of vane number, vane angle, vane radius, and hub diameter on transport behavior, using the horizontal dispersion coefficient and pressure drop as performance indicators. The results demonstrate that the vane angle is the most influential factor for both particle dispersion and pressure loss, whereas vane number and vane radius have comparatively minor effects. Moreover, increasing the vane angle and hub diameter strengthens the swirl intensity, promotes particle accumulation near the pipe wall, and thereby increases the horizontal dispersion coefficient. The results offer insights that can inform the enhancement of the efficiency and safety of vertical hydraulic transport.

在深海采矿垂直水力输送中，多种因素会导致颗粒局部聚集，导致颗粒浓度升高，降低输送性能。为了缓解这一问题，本研究提出了一种结构简单的新型偏转叶片型旋流发生器，无需额外操作即可产生旋流。采用计算流体力学（CFD）和离散元法（DEM）相结合的方法，对具有叶片的垂直管道中的液固旋流进行了数值模拟。随后，采用正交设计方法，以水平分散系数和压降为性能指标，评估叶片数量、叶片角度、叶片半径和轮毂直径对输送行为的影响。结果表明，叶片角度对颗粒分散和压力损失的影响最大，叶片数和叶片半径的影响相对较小。增大叶片角度和轮毂直径可增强旋流强度，促进颗粒在管壁附近积聚，从而提高水平弥散系数。研究结果为提高垂直水力输送的效率和安全性提供了参考。

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引用次数: 0

Synthesis of MWCNT/Inconel 718 composite powder through mild surface functionalization and High-Energy Ball Milling for subsequent use in additive manufacturing of MMC parts 通过温和的表面功能化和高能球磨合成MWCNT/Inconel 718复合粉末，用于MMC零件的增材制造

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-02 DOI: 10.1016/j.partic.2025.12.017

Prasenjit Patra , Saikat Nandi , Saurav Misra , Partha Saha , Pranab K. Dan

This study presents a systematic methodology for producing multi-walled carbon nanotubes (MWCNTs)/Inconel 718 composite powder, especially for the Laser Directed Energy Deposition (LDED) process. This approach integrates mild oxidative functionalization of MWCNTs to reduce agglomerations and High-Energy Ball Milling (HEBM) to enhance dispersion over the Inconel 718 powder. The MWCNTs were functionalized through a two-step chemical treatment: (1) magnetic stirring in a 3:1 H₂SO₄ and HNO₃ solution, using two distinct acid concentrations (3 M and 8 M), followed by (2) an ultrasonic bath in H₂O₂ solution. Structural defects were characterized using Raman spectroscopy (RS), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM), while X-ray photoelectron spectroscopy (XPS) quantified the amount of oxygen-containing functional groups. Among the six functionalization processes, the treatment condition involving 4 h of magnetic stirring, then 2 h in the sonication bath, emerged as optimal, yielding a relatively high functional group attachment (11.47 %) with lower surface defects and without compromising uniformity in mixing. The FESEM analysis of the functionalized MWCNTs (up to 2 wt%)/Inconel 718 composite powder, collected from the LDED machine bed, confirmed uniform dispersion, validating the functionalization strategy. Although developed for LDED, this strategy is also suitable for MMC production processes that use powder as feedstock.

本研究提出了一种制备多壁碳纳米管(MWCNTs)/Inconel 718复合粉末的系统方法，特别是激光定向能沉积（LDED）工艺。该方法结合了MWCNTs的轻度氧化功能化以减少团聚，以及高能球磨（HEBM）以增强Inconel 718粉末的分散。MWCNTs通过两步化学处理实现功能化：(1)在3:1的H2SO4和HNO3溶液中进行磁力搅拌，使用两种不同的酸浓度（3 M和8 M），然后(2)在H2O2溶液中进行超声波浴。利用拉曼光谱（RS）、热重分析（TGA）和透射电子显微镜（TEM）对结构缺陷进行了表征，x射线光电子能谱（XPS）对含氧官能团的数量进行了量化。在6种功能化工艺中，先进行4小时磁力搅拌，然后在超声浴中进行2小时的处理条件是最佳的，可以产生相对较高的官能团附着（11.47%），表面缺陷较低，且不影响混合的均匀性。从led机床上收集的功能化MWCNTs（高达2 wt%）/Inconel 718复合粉末的FESEM分析证实了均匀分散，验证了功能化策略。虽然是为led开发的，但该策略也适用于使用粉末作为原料的MMC生产过程。

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引用次数: 0

MXene-assisted NiFe sulfides with interfacial modulation for oxygen evolution electrocatalysis 界面调制的mxene辅助NiFe硫化物的析氧电催化

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-02 DOI: 10.1016/j.partic.2025.12.020

Pei-Wei Zhong , Hong-Xiao Yang , Wenkang Xu, Zhiyang Yu, Bei Li, Hongjuan Wang, Yonghai Cao, Hao Yu, Hao-Fan Wang

Oxygen evolution reaction (OER) plays a vital role in various pivotal electrochemical applications. To improve the energy efficiency and economic viability of these technologies, it is critical to develop cost-effective and highly active OER electrocatalysts based on earth-abundant elements. Among various candidates, transition-metal-based compounds have demonstrated notable potential for OER electrocatalysis, attributable to their adjustable electronic configurations. Nevertheless, their practical application remains constrained by limited intrinsic activity, poor electrical conductivity, and particle aggregation, which compromise their overall OER efficiency. In this study, an efficient OER electrocatalyst, S-NiFc MOF@Mo₂CT_x, is constructed by the sulfidation of NiFe-based metal–organic framework (MOF) precursors anchored on conductive Mo₂CT_x MXene. The MOF-derived NiFe sulfides offer abundant accessible active sites, and the strong interfacial coupling between NiFe sulfides and Mo₂CT_x enhances the catalyst's intrinsic activity. The conductive Mo₂CT_x matrix also guarantees efficient electron transport and homogeneous dispersion of the active phase. As a result, S-NiFc MOF@ Mo₂CT_x exhibits excellent OER activity, reaching 10 mA cm⁻² at an overpotential of 223 mV, along with stable operation for 68 h in 1.0 M KOH solution. This study broadens the scope of MXene-based materials in electrocatalytic applications and offers valuable insights into optimizing NiFe-derived OER catalysts.

析氧反应（OER）在各种关键电化学应用中起着至关重要的作用。为了提高这些技术的能源效率和经济可行性，开发具有成本效益和高活性的基于地球丰富元素的OER电催化剂至关重要。在各种候选化合物中，过渡金属基化合物由于其可调节的电子结构而表现出显著的OER电催化潜力。然而，它们的实际应用仍然受到固有活性有限、导电性差和粒子聚集的限制，这些都会影响它们的整体OER效率。在这项研究中，一种高效的OER电催化剂S-NiFc MOF@Mo2CTx是通过将nfe基金属有机框架（MOF）前驱体固定在导电的Mo2CTx MXene上进行硫化而构建的。mof衍生的NiFe硫化物提供了丰富的可达活性位点，并且NiFe硫化物与Mo2CTx之间的强界面耦合提高了催化剂的本征活性。导电Mo2CTx基体还保证了有效的电子传输和活性相的均匀分散。因此，S-NiFc MOF@ Mo2CTx表现出优异的OER活性，在223 mV过电位下达到10 mA cm−2，并在1.0 M KOH溶液中稳定运行68小时。这项研究拓宽了mxene基材料在电催化应用中的范围，并为优化nfe衍生的OER催化剂提供了有价值的见解。

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引用次数: 0

Numerical simulation and experimental study on PM2.5 capture performance of multiple electric field ESP under different magnetic field introduction positions 不同磁场引入位置下多电场电潜泵捕获PM2.5性能的数值模拟与实验研究

IF 4.3 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology

Pub Date : 2026-01-02 DOI: 10.1016/j.partic.2025.12.009

Shengxin Yang , Jianping Zhang , Boren Wang , Wen Gu , Weiguo Zhou

Aiming at enhancing the capture performance of electrostatic precipitator (ESP) for PM2.5 particles, this paper introduces a multi-field coupling model and carries out the analysis of the electromagnetic dedusting mechanism of four electric field ESP under the magnetic-field-induced trajectory modification, and investigates the capture performance of multiple electric field ESP for PM2.5 particles at different magnetic field introduction positions through numerical simulations and PIV (Particle Image Velocimetry) experiments. The PIV measurements showed flow-field patterns that were consistent with established ESP findings, where higher applied voltage and lower flue-gas velocity lead to stronger particle deflection toward the collection plate. These observed trends serve as a validation of the reliability of the present PIV setup and simulation model. Introducing a magnetic field into a specific zone resulted in particles to follow a spiral path leading to the collection plate. This motion not only altered the paths of particles in the targeted region but also influenced adjacent zones. Magnetic confinement was found to be more effective under low flue gas velocity and low operating voltage conditions. Furthermore, at lower voltages, the third electric field was more sensitive to magnetic confinement, whereas at higher voltages, the fourth electric field exhibited greater sensitivity. The findings can offer new design ideas for performance enhancement of traditional ESPs.

为了提高静电除尘器（ESP）对PM2.5颗粒物的捕集性能，本文引入了多场耦合模型，分析了四种电场的电除尘器在磁场诱导轨迹修正下的电磁除尘机理。通过数值模拟和粒子图像测速（PIV）实验，研究了不同磁场引入位置下多电场ESP对PM2.5颗粒的捕获性能。PIV测量显示的流场模式与ESP的发现一致，即较高的施加电压和较低的烟气速度会导致颗粒更强烈地向收集板偏转。这些观察到的趋势验证了当前PIV设置和仿真模型的可靠性。将磁场引入特定区域，导致颗粒沿着螺旋路径通向收集板。这种运动不仅改变了目标区域内粒子的路径，而且还影响了邻近区域。在低烟气流速和低工作电压条件下，磁约束更为有效。此外，在较低电压下，第3个电场对磁约束更敏感，而在较高电压下，第4个电场表现出更大的灵敏度。研究结果可为传统esp的性能提升提供新的设计思路。

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引用次数: 0