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Removal of pollutants from aqueous solution with magnetic biochar: a mini review 磁性生物炭去除水溶液中的污染物:一个小回顾
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-30 DOI: 10.1080/02726351.2023.2255834
Jalil Kermannezhad, Hassan TorabiPoodeh, Elham Ghanbari-Adivi, Babak ShahiNezhad
AbstractIn the last decade, there has been increasing scrutiny of using biochar to remove pollutants from the waste water. However, due to particle size of biochar and the difficulty of its separation after the adsorption process, the use of these adsorbents has always been a challenge, until magnetic biochar (MB) was proposed by researchers. The production of MB is divided into pre-pyrolysis and post- pyrolysis methods. The MB activation/modification methods included physical and chemical activation/ammonization, sulfurization, oxidation, polymerization and MB production without modification/activation was investigated. In this research, studies that produced MB as a one-step heating and post-pyrolysis method reviewed. The results showed that the capacity of different MB to remove lead, cadmium, chromium, copper, and arsenic was calculated to be 96.9, 91.2, 90.5, 97.6 and 55.42%, respectively. In these studies, the weight ratio of the magnetic fraction to biochar, temperature, and carbonization time were 1.2 (g/g), 575 °C, and 130 min, respectively. During the absorption process, the adsorption capacity of magnetic biochar increased and then reached a constant value. Therefore, the magnetic biochar has good ability to hold the adsorbed pollutants to the end of process. Also, as the initial pollutant concentration increased, the adsorption capacity unexpectedly increased and eventually reached its maximum, indicating a high affinity of the magnetic biochar with the pollutants.Keywords: Activated carbonadsorptionmagneticbiocharbiomasscarbonization AcknowledgmentsThe support of this organization is appreciated.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis study was funded by the University of Lorestan, Lorestan, Iran.
摘要在过去的十年中,利用生物炭去除废水中的污染物受到越来越多的关注。然而,由于生物炭的粒度和吸附过程后的分离难度,这些吸附剂的使用一直是一个挑战,直到有研究人员提出磁性生物炭(MB)。MB的生产分为热解前法和热解后法。研究了物理、化学活化/氨化、硫化、氧化、聚合和无改性/活化制备MB的方法。本研究综述了一步加热后热解法制备MB的研究进展。结果表明,不同MB对铅、镉、铬、铜和砷的去除率分别为96.9、91.2、90.5、97.6和55.42%。在本研究中,磁性组分与生物炭的重量比为1.2 (g/g),炭化温度为575℃,炭化时间为130 min。在吸附过程中,磁性生物炭的吸附量逐渐增大,达到一个恒定值。因此,磁性生物炭具有良好的将吸附污染物保持到处理结束的能力。此外,随着初始污染物浓度的增加,磁性生物炭的吸附量意外增加,并最终达到最大值,表明磁性生物炭对污染物具有较高的亲和力。关键词:活性炭吸附磁性生物炭生物质碳化感谢本组织的支持。披露声明作者未报告潜在的利益冲突。本研究由伊朗Lorestan的Lorestan大学资助。
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引用次数: 0
Erosion and flow visualization in centrifugal slurry pumps: a comprehensive review of recent developments and future outlook 离心浆泵的侵蚀和流动可视化:近期发展和未来展望的综合回顾
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-28 DOI: 10.1080/02726351.2023.2259336
Jagadeesh Banka, Anant Kumar Rai
AbstractPrimary goal of this article is to present recent developments in erosion research and associated particles in centrifugal slurry pumps. Solid particles in transported liquid cause severe erosion of components in centrifugal pumps causing poor performance and reduced lifespan. Erosion necessitates frequent repairs and maintenance replacements, resulting in significant financial losses. This article summarizes the effect of slurry erosion on the performance characteristics of centrifugal pumps handling different fluid and solid mixtures, as well as methods to reduce erosion. According to the majority of the literature, particle properties, pump geometry, and operating parameters have a paramount influence on pump characteristics. Recently, researchers attempted to improve the performance characteristics of centrifugal pumps by employing various flow visualization techniques, which also aid in understanding the solid particle interaction with various pump components. Therefore, recent advancements in flow visualization technology inside the centrifugal pump are also included. Further, specific studies on erosion in centrifugal slurry pumps from different industries are also provided. This study is beneficial to designers, process managers and researchers involved with slurry centrifugal pumps.Keywords: Centrifugal slurry pumpPIVparticleerosionsedimentefficiency AcknowledgmentThe authors would like to thank Science and Engineering Research Board [Grant No. SRG/2020/002452], India for financially supporting the present work.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors would like to thank Science and Engineering Research Board [Grant No. SRG/2020/002452], India for financially supporting the present work.
摘要本文的主要目的是介绍离心浆泵中侵蚀研究和相关颗粒的最新进展。输送液体中的固体颗粒对离心泵的部件造成严重的腐蚀,导致离心泵性能下降,寿命缩短。腐蚀需要经常维修和更换,造成重大的经济损失。本文综述了浆液冲蚀对离心泵处理不同流体和固体混合物性能特性的影响,以及减少冲蚀的方法。根据大多数文献,颗粒特性、泵的几何形状和操作参数对泵的特性有最重要的影响。最近,研究人员试图通过采用各种流动可视化技术来改善离心泵的性能特征,这也有助于理解固体颗粒与各种泵部件的相互作用。因此,离心泵内部流动可视化技术的最新进展也包括在内。此外,还对不同行业的离心浆料泵的冲蚀进行了具体研究。本研究对浆液离心泵的设计人员、工艺管理人员和研究人员有一定的参考价值。关键词:离心浆体泵ppivv颗粒侵蚀沉降效率感谢作者感谢科学与工程研究委员会[批准号]。SRG/2020/002452],为本工作提供资金支持。披露声明作者未报告潜在的利益冲突。作者要感谢科学与工程研究委员会[批准号:SRG/2020/002452],为本工作提供资金支持。
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引用次数: 0
Predicting pneumatic conveyability and flowability of fly ash using bulk property characterization 利用体积特性预测粉煤灰的气力输送性和流动性
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-26 DOI: 10.1080/02726351.2023.2261420
Gourav Saluja, S. S. Mallick, Sujay Karmakar
AbstractPneumatic fly ash conveying systems in thermal power plants are often not able to transport ash as per their expected duty due to either variability of ash characteristics and/or inadequate system sizing resulting in generation loss and reduced ash utilization. This paper results from an ongoing investigation into the relationship between the physical characteristics of ash to some of the important design criteria, such as ash conveyability and flowability. Based on a comprehensive test program including the pneumatic conveying (in a pilot plant) and flow property testing of 23 ash samples obtained from five different power stations, predictions for conveyability and flowability have been made using bulk property characterization. Of all the different particle and bulk parameters investigated, the angle of repose has been found to be the most significant parameter linking conveyability and flowability. A newly developed design tool based on the angle of repose is expected to assist designers and operational engineers to predict the flow condition and appropriately size equipment/system with suitable operating parameters.Keywords: Fly ashpneumatic conveyingflowabilityhausner ratioangle of repose AcknowledgementThe authors would like to thank NTPC Ltd., India for the sponsored research project – sanction letter ref. 9100000168-151-1001. “NTPC sponsored Research Scholar, Gouarv Saluja, would like to thank NTPC for providing him scholarship”.The authors would like to acknowledge the collaboration between Thapar Institute of Engineering & Technology (TIET) and Granutools (Belgium) for the use of the GranuHeap instrument.Disclosure statementNo potential conflict of interest was reported by the author(s).
摘要火力发电厂的气力飞灰输送系统由于灰特性的变化和/或系统尺寸的不足导致发电损失和灰利用率的降低,往往不能按预期的职责输送灰。本文是对灰的物理特性与一些重要的设计准则(如灰的可输送性和流动性)之间的关系进行研究的结果。基于一个综合的测试程序,包括气力输送(在一个中试工厂)和从五个不同电厂获得的23个灰样的流动特性测试,使用散装特性表征对可输送性和流动性进行了预测。在研究的所有颗粒和体参数中,休止角是连接可输送性和流动性的最重要参数。一种基于休止角的新开发设计工具有望帮助设计人员和操作工程师预测流动状况,并根据合适的操作参数选择合适的设备/系统尺寸。关键词:粉煤灰;气力输送;流动能力;“NTPC赞助的研究学者Gouarv Saluja感谢NTPC为他提供奖学金”。作者要感谢塔帕尔工程技术研究所(TIET)和Granutools(比利时)在GranuHeap仪器的使用上的合作。披露声明作者未报告潜在的利益冲突。
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引用次数: 0
CFD simulation on internal flow field of typical hydrocyclone for coal and development of novel hydrocyclone 典型煤用水力旋流器内部流场CFD模拟及新型水力旋流器研制
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-25 DOI: 10.1080/02726351.2023.2261391
Xuebin Zhang, Youjun Tao
AbstractThe work conducted flow field analysis of a typical hydrocyclone (φ500 type) in the Coal Processing Plant using CFD simulation, including hydrocyclone modeling, flow field development, static pressure distribution, three-dimensional velocity, and air column development. Besides, the effects of influential factors on the classification effect of hydrocyclone were studied. On this basis, a novel hydrocyclone model was developed and simulated for the ultrafine classification of coal slurry. The static pressure and velocity in the typical hydrocyclone have good symmetry and certain regularity. Decreasing the overflow pipe diameter and cone angle, while increasing the underflow pipe diameter, cylindrical section height, and feed rate will increase the classification efficiency of hydrocyclone. The novel hydrocyclone designed of annular feeding, small cone angle, and large cone bottom reduces energy consumption, decreases classification size, and improves classification accuracy. CFD simulation results show that the novel hydrocyclone has higher classification efficiency and smaller classification size over the typical hydrocyclone. The novel hydrocyclone develops an excellent ultrafine classification effect of coal slurry and provides a prospective approach for the industrial application of hydrocyclone in the fine coal ultrafine classification process.Keywords: Hydrocycloneultrafine classificationcoal slurryclassification efficiencyflow field simulation Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the National Natural Science Foundation of China under Grant No. [51874303].
摘要采用CFD模拟方法对某煤厂φ500型典型水力旋流器进行了流场分析,包括旋流器建模、流场展开、静压分布、三维速度、气柱展开等。此外,还研究了各影响因素对旋流器分级效果的影响。在此基础上,建立了一种新型的水力旋流器模型,并进行了数值模拟。典型水力旋流器的静压和速度具有良好的对称性和一定的规律性。减小溢流管径和锥角,增大下流管径、圆柱段高度和进给量,可以提高水力旋流器的分级效率。采用环形进给、锥角小、锥底大的新型旋流器设计,降低了能耗,减小了分级尺寸,提高了分级精度。CFD模拟结果表明,与传统旋流器相比,新型旋流器具有更高的分级效率和更小的分级尺寸。新型水力旋流器对煤浆具有优异的超细分级效果,为水力旋流器在细煤超细分级过程中的工业应用提供了前景。关键词:水力旋流器;超细分级;煤浆;分级效率;本研究受国家自然科学基金资助,项目资助号:[51874303]。
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引用次数: 0
Dust-removal performance of an improved spherical cylindrical ECP under magnetic confinement effect 磁约束作用下改进型球形圆柱ECP的除尘性能
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-25 DOI: 10.1080/02726351.2023.2260993
Jianping Zhang, Zhuo Chen, Qinggang Si, Pengju Zhang, Dawen Zhao, Zhiwei Zhang, Baodong Ren
AbstractIn order to further improve the trapping effect of fine particles, an improved electrostatic cyclone precipitator (ECP) was proposed. The electromagnetic dust-removal mechanism of spherical cylindrical ECP was revealed, and the influences of flue gas velocity on the dust-removal effect of fine particles with and without magnetic confinement effect were discussed. The results show that the overall efficiency curve of fine particles shows a ' hump ' type with the change of flue gas velocity, and the increase of magnetic induction intensity promotes the hump to move to the low flue gas velocity area. Increasing magnetic induction intensity can improve the trapping performance of spherical cylindrical magnetically constrained ECP, and the improvement effect weakens gradually when the same amplitude increases.Keywords: Spherical cylindrical ECPmagnetic confinement effectfine particlesdust-removal performancehump AcknowledgmentsThis work is sponsored by National Natural Science Foundation of China (12172228, 11572187), Natural Science Foundation of Shanghai (22ZR1444400), the Program of Foundation of Science and Technology Commission of Shanghai Municipality (22dz1206005, 22dz1204202), and Shanghai Professional Technical Service Platform for Intelligent Operation and Maintenance of Renewable Energy (22DZ2291800).Disclosure statementNo potential conflict of interest was reported by the author(s).Data availability statementDue to the sensitive nature of the questions asked in this study, raw data would remain confidential and would not be shared.Additional informationFundingThis work is sponsored by National Natural Science Foundation of China (12172228, 11572187), Natural Science Foundation of Shanghai (22ZR1444400), the Program of Foundation of Science and Technology Commission of Shanghai Municipality (22dz1206005, 22dz1204202), and Shanghai Professional Technical Service Platform for Intelligent Operation and Maintenance of Renewable Energy (22DZ2291800).
摘要为了进一步提高细颗粒的捕集效果,提出了一种改进型静电旋风除尘器(ECP)。揭示了球形圆柱ECP的电磁除尘机理,讨论了有无磁约束作用时烟气速度对细颗粒除尘效果的影响。结果表明:随着烟气速度的变化,细颗粒整体效率曲线呈“驼峰”型,磁感应强度的增大促使驼峰向低烟气速度区移动;增大磁感应强度可以改善球形圆柱磁约束ECP的俘获性能,但随着相同磁感应强度的增大,改善效果逐渐减弱。关键词:项目资助:国家自然科学基金项目(12172228,11572187),上海市自然科学基金项目(22ZR1444400),上海市科委基金项目(22dz1206005, 22dz1204202),上海市可再生能源智能运维专业技术服务平台(22DZ2291800)。披露声明作者未报告潜在的利益冲突。数据可用性声明由于本研究中所问问题的敏感性,原始数据将保密,不会被共享。基金资助:国家自然科学基金项目(12172228,11572187)、上海市自然科学基金项目(22ZR1444400)、上海市科委基金项目(22dz1206005, 22dz1204202)、上海市可再生能源智能运维专业技术服务平台项目(22DZ2291800)。
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引用次数: 0
Modeling minimum transport boundary for pneumatic conveying of powders 粉末气动输送的最小输送边界建模
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-20 DOI: 10.1080/02726351.2023.2258347
Gourav Saluja, S. S. Mallick, Sujay Karmakar
AbstractAccurate prediction of blockage conditions or the minimum transport boundary is essential for the reliable design and operation of a pneumatic powder conveying system. Many existing empirical models for minimum transport boundary do not consider essential powder properties and operating conditions, such as loose poured bulk density, particle size, and air density. Based on the conveying results of 13 different powders, this paper has developed a new empirical model for the minimum transport boundary. The model includes a Froude number based on particle size and bulk density and a dimensionless gas density term, which makes the model inherently adaptable to variations in powder properties and operating conditions. Results of validation show that the new model provides a significantly improved prediction of minimum Froude Number (in the range of 7 to 13% relative error only) compared to the existing models, which provided relative errors in the range of 19 to 67%.Keywords: Pneumatic conveyingminimum transport criteriamodified particle froude numberloose poured bulk densityparticle sizeconveying air density AcknowledgmentThe authors would like to thank NTPC Ltd., India, for the sponsored research project – sanction letter ref. 9100000168-151-1001.“NTPC sponsored Research Scholar, Gouarv Saluja, would like to thank NTPC for providing him scholarship.”The authors would like to acknowledge the collaboration between Thapar Institute of Engineering & Technology (TIET) and Granutools (Belgium) for the use of GranuHeap instrument.Disclosure statementNo potential conflict of interest was reported by the author(s)
摘要准确预测堵塞情况或最小输送边界对于气力输送系统的可靠设计和运行至关重要。许多现有的最小输运边界经验模型没有考虑基本的粉末特性和操作条件,如松散浇注的堆积密度、粒度和空气密度。根据13种不同粉体的输送结果,建立了最小输送边界的经验模型。该模型包括一个基于粒度和堆积密度的弗劳德数和一个无量纲的气体密度项,这使得该模型固有地适应粉末性能和操作条件的变化。验证结果表明,与现有模型的相对误差为19% ~ 67%相比,新模型对最小弗劳德数的预测有了显著提高(相对误差仅为7% ~ 13%)。关键词:气动输送;最小输送标准;改性颗粒管径数;;松散浇注容重;;“NTPC赞助的研究学者Gouarv Saluja感谢NTPC为他提供奖学金。”作者感谢塔帕尔工程技术研究所(TIET)与Granutools(比利时)在GranuHeap仪器使用方面的合作。披露声明作者未报告潜在的利益冲突
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引用次数: 0
Heat transfer study of water and air-based nanofluids with Al 2 O 3 nanoparticles in a circular pipe using a multiphase approach 基于多相法的水基和气基纳米流体与氧化铝纳米颗粒在圆管内的传热研究
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-20 DOI: 10.1080/02726351.2023.2256688
Sameer Ranjan Sahu, Hrushikesh Barik, Pandaba Patro
AbstractThe current work investigates the thermal characteristics of nanofluid flow (water and air as base fluids with Al2O3 nanoparticles) in a circular pipe at constant heat flux. Numerical simulations were performed using the Eulerian-Euleian two-phase model with an RNG k−ε turbulent model with enhanced wall function. Results showed that the two-phase approach reduced the error by about 3–5% in the prediction of the average heat transfer coefficient. Within the range of a volumetric fraction of nanoparticles from 1 to 5% and inlet velocity from 10 to 25 m/s, heat transfer performance increased significantly compared to pure fluid flow. For water, the particle motion from the wall to the center of the pipe was empowered by thermophoresis in addition to higher turbulent kinetic energy leading to a profit index of about 3.5, while for air; the Brownian motion of particles increased the viscosity and thermal conductivity near the wall leading to profit index of about 240 indicating high amount of heat transfer. For both fluids, the heat transfer effectiveness ratio increased at a higher volume fraction of nanoparticles (3.5 for water-based nanofluid and 140 for air-based nanofluid). These values indicate promising effects of nanoparticle addition, especially for air, where the volume fraction had a much more significant effect than water.Keywords: NanofluidAl2O3 nanoparticlesEulerianheat transferNusselt number Disclosure statementNo potential conflict of interest was reported by the author(s).
摘要本文研究了纳米流体(以水和空气为基础流体,含Al2O3纳米颗粒)在恒定热流密度下在圆管内流动的热特性。采用欧拉-欧拉两相模型和增强壁面函数的RNG k−ε湍流模型进行了数值模拟。结果表明,两相法对平均换热系数的预测误差减小了3 ~ 5%。当纳米颗粒体积分数为1 ~ 5%,进口速度为10 ~ 25 m/s时,换热性能明显高于纯流体。对于水,除了更高的湍流动能外,热泳动还增强了颗粒从管壁到管心的运动,导致利润指数约为3.5,而对于空气;颗粒的布朗运动增加了壁面附近的粘度和导热系数,导致利润指数约为240,表明传热量很大。对于这两种流体来说,纳米颗粒体积分数越高(水基纳米流体体积分数为3.5,空气基纳米流体体积分数为140),传热效率比就越高。这些数值表明,纳米颗粒的加入有很好的效果,特别是对于空气,其中体积分数的影响要比水显著得多。关键词:纳米流体al2o3纳米颗粒欧拉传热努塞尔数披露声明作者未报告潜在的利益冲突。
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引用次数: 0
Geotechnical studies on cemented and untreated Behshahr loess and Amol clay of Iran 伊朗Behshahr黄土和Amol粘土胶结和未经处理的岩土力学研究
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-15 DOI: 10.1080/02726351.2023.2257153
Saman Soleimani Kutanaei, Asskar Janalizadeh Choobbasti, Ali Vafaei, Mobina Taslimi PaeinAfrakoti, Alireza Fakhrabadi, Moein Ghadakpour
AbstractThere has been little research into the effects of cement on the geotechnical properties of two types of fine-grained soil with roughly the same grain size. The cement percentages used in this investigation were 0, 4, and 8% by dry weight of soil. Compaction features, consolidation characteristics, unconfined compressive strength (UCS), and Atterberg limits were all determined in the laboratory. Furthermore, scanning electron microscopy (SEM) examinations were used to analyze the microstructures of cemented and untreated loess and clay. Notably, the MDD for loess and clay are 1.72 gr/cm3 and 1.57 gr/cm3 at CC = 0%, respectively, and 1.7 gr/cm3 and 1.55 gr/cm3 at CC = 4%. The OMC for loess and clay are 15% and 22% at CC = 0%, respectively, and 17% and 20% at CC = 4%. At CC = 0%, loess and clay have cohesion values of 25 kPa and 28.7 kPa, respectively, and 190 kPa and 140 kPa at CC = 8%. Internal friction degrees for loess and clay are 24 and 29 degrees at CC = 0%, respectively, and 36 and 34 degrees at CC = 8. The consolidation test findings demonstrated that increasing the cement proportion reduced cemented soils’ compressibility. The Plasticity Index (PI) rose as cement concentration increased. However, significant percentages of cement concentration reduced the plasticity index. Furthermore, adding cement agents resulted in significant improvements in elasticity modulus and UCS for both soils. The SEM results indicated that the cement-treated loess was denser and more homogenous than the cement-treated clay sample. Triaxial tests reveal that cement particles improve cohesiveness and internal friction angle.Keywords: Cementloessclaygeotechnical propertiesstabilizationcohesioninternal friction angle Disclosure statementNo potential conflict of interest was reported by the author(s).
摘要对于两种粒径大致相同的细粒土,水泥对其岩土性能影响的研究很少。本调查中使用的水泥百分比分别为土壤干重的0、4和8%。压实特性、固结特性、无侧限抗压强度(UCS)和Atterberg极限均在实验室中确定。此外,采用扫描电镜(SEM)对胶结和未处理黄土和粘土的微观结构进行了分析。值得注意的是,在CC = 0%时,黄土和粘土的MDD分别为1.72 gr/cm3和1.57 gr/cm3,在CC = 4%时,MDD分别为1.7 gr/cm3和1.55 gr/cm3。在CC = 0%时,黄土和粘土的OMC分别为15%和22%;在CC = 4%时,OMC分别为17%和20%。CC = 0%时,黄土和粘土黏聚力值分别为25 kPa和28.7 kPa; CC = 8%时,黄土和粘土黏聚力值分别为190 kPa和140 kPa。在CC = 0%时,黄土和粘土的内摩擦度分别为24°和29°;在CC = 8时,其内摩擦度分别为36°和34°。固结试验结果表明,水泥掺量的增加降低了水泥土的压缩性。塑性指数(PI)随水泥浓度的增加而升高。然而,水泥浓度显著降低了塑性指标。此外,水泥剂的加入显著改善了两种土壤的弹性模量和UCS。SEM结果表明,水泥处理后的黄土比水泥处理后的粘土更致密、均一性更好。三轴试验表明,水泥颗粒改善了粘结性和内摩擦角。关键词:水泥、粘土、岩土特性、稳定、黏结、内摩擦角披露声明作者未报告潜在的利益冲突。
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引用次数: 0
Modeling pressure drop in curvature and reacceleration zones in bends during pneumatic conveying of fine powders 细粉气力输送过程中弯道曲率和再加速区的压降建模
4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-11 DOI: 10.1080/02726351.2023.2255865
Atul Sharma, Rachit Poddar, Gourav Saluja, S. S. Mallick
This paper presents the results of ongoing research aimed at modeling the pressure drop in bends during pneumatic conveying of fine powders. Based on the test results of conveying fly ash and two grades of cement through three different radii of curvature of the bends, two different bend diameters, and two different locations of the test bend, a semi-empirical relationship was developed for bend loss with various pressure drop components modeled separately. The newly developed model was used to predict the bend loss for a solid loading ratio in the range of 51–170 (very dense phase). The proposed model exhibited a satisfactory level of prediction accuracy, with relative error percentages of less than 12.2% and 19.6% for the high and low solids loading ratios, respectively.
本文介绍了正在进行的研究结果,旨在模拟弯道压力降在细粉的气力输送过程中。根据三种不同弯道曲率半径、两种不同弯道直径和两种不同弯道位置输送粉煤灰和两种水泥的试验结果,分别建立了不同压降分量下的弯道损失半经验关系。利用该模型对固相加载比为51 ~ 170(非常致密相)时的弯曲损失进行了预测。该模型具有较好的预测精度,高固载比和低固载比的相对误差百分比分别小于12.2%和19.6%。
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引用次数: 0
Correction 修正
IF 2.5 4区 工程技术 Q2 Chemical Engineering Pub Date : 2023-09-04 DOI: 10.1080/02726351.2023.2251327
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引用次数: 0
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Particulate Science and Technology
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