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颗粒学报（英文版）
颗粒学报（英文版）

郭慕孙

双月刊

1674-2001

jcsp@home.ipe.ac.cn

010-82629146

100080

北京中关村北二条1号中科院过程所内

颗粒学报（英文版）/Journal China ParticuologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊以创精品与国际化为办刊方针，旨在反映中国颗粒学研究的最新成果、及时追踪国际颗粒学领域的最新动态。学报主要刊登国内外颗粒学领域中的研究、工程和应用方面的优秀原始论文，包括颗粒测试与表征、颗粒制备与处理、流态化、气溶胶和超微颗粒等。本刊不仅设有论坛、研究论文、研究简报等内容，还有书评、会议信息与报道、测试仪器进展等栏目，便于相关人士进行学术交流，并为科技成果的展示提供平台，信息十分丰富。本刊已陆续被美国化学文摘（CA），俄罗斯文摘杂志（AJ），剑桥科学文摘（CSA）以及中国科技论文与引文数据库(CSTPCD)收录。China PARTICUOLOGY, a bimonthly interdisciplinary journal in English, purports to present the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The word PARTICUOLOGY was coined to correspond to its Chinese terminology, which denotes both the science and technology of particles. Although the journal is China-based, it serves as a medium for all accepted papers of international origin, especially the best papers representing current advances in the world. Besides scientific and engineering papers, the journal includes the following sections: R & D notes, Current events, Editorials reviews, Forum for comments, opinions and qualified speculations, News on books, instruments and meetings.Now， China Particuology has been indexed by CA, AJ , CSA and CSTPCD.??读者对象（Audiences）： 中国颗粒学会会员、国内外从事颗粒学和颗粒技术研究和生产的大专院校师生、科研院所及企业的研究人员和技术人员。 Member of Chinese Society of Particuology, and researchers or experts who are engaged in the study of particle sciences and technology coming from colleges, institutes and corporations all over the world.
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    Computational modelling of gas-liquid-solid multiphase free surface flow with and without evaporation

    Huihuang XiaMarc Kamiah
    218-235页
    查看更多>>摘要：Gas-liquid-solid multiphase systems are ubiquitous in engineering applications,e.g.inkjet printing,spray drying and coating.Developing a numerical framework for modelling these multiphase systems is of great significance.An improved,resolved computational fluid dynamics-discrete element method(CFD-DEM)framework is developed to model the multiphase free surface flow with and without evaporation.An improved capillary force model is developed to compute the capillary interactions for partially floating particles at a free surface.Three well-known benchmark cases,namely drag coefficient calculation,the single sphere settling,and drafting-kissing-tumbling of two particles are conducted to validate the resolved CFD-DEM model.It turns out that the resolved CFD-DEM model developed in this paper can accurately calculate the fluid-solid interactions and predict the trajectory of solid particles interacting with the liquid phase.Numerical demonstrations,namely two particles moving along a free surface when the liquid phase evaporates,and particle transport and accumulations inside an evapo-rating sessile droplet show the performance of the resolved model.
      原文链接:
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    Porphyrins,phthalocyanines,and related covalent-organic frameworks in the photochemical and electrochemical water splitting:A review

    Oxana V.KharissovaYolanda Pe?a MéndezBoris I.KharisovAleksandr L.Nikolaev...
    236-265页
    查看更多>>摘要：In this review,the possibilities of photochemical and electrochemical water splitting(WS)using por-phyrins,phthalocyanines,related macrocycles,and their metal complexes are discussed.Significant ef-forts are being carried out in order to develop novel and cheap methods for water decomposition to generate inexhaustible greener energy sources(molecular hydrogen)instead of oil and gas.The pro-cesses of WS in heterogeneous and homogeneous media require novel photo-and electrocatalysts,in particular those on macrocycle basis.A high WS efficiency has been observed for porphyrins and phthalocyanines,showing their suitability both for HER and OER processes are available using these relative compounds for WS purposes.Porphyrins can be used in photocatalytic and electrocatalytic WS processes both in their free forms or as metal porphyrins/porphyrinates,mainly loaded on various inorganic materials,such as Au NPs,C3N4,GaP,KTaO3,GaP,and so on,as part of porphyrin-containing polymers or on electrode surface as modi-fying coatings,being sometimes better than commercial catalysts,such as Pt/C.Photocatalytic H2 evo-lution can be considerably depended on the shape of porphyrin particles;in particular,porphyrin nanowires can yield up to 20 times more H2 than its powder.In certain cases,both HER and OER can be driven in the same electrolyte using metal porphyrins.The capacity of metal porphyrins to generate ROS(in particular,singlet oxygen 1O2)under ultrasonic treatment is known and can be successfully used for H2O2 and O2 generation.Phthalocyanines can be used in similar processes in free form or as composites with inorganic or organic counterparts,being immobilized on nanocarbons,metal oxides and salts,or simply dissolved in water acting in a homogeneous medium.An additional use of ultrasound can lead to better results due to the synergistic effect of the sonochemical treatment and light.Covalent-organic frameworks are also applied for WS purposes and are mainly based on a variety of N-containing li-gands,such as triazine,β-ketoenamines,and β-ketoamines,bipyridine,as well as some S-containing ligands.Metal complexes in WS processes are widely represented by ruthenium coordination com-pounds,being suitable for future commercial artificial photosynthesis,as well by copper and cobalt coordination compounds with phenantroline,porphyrazine,and related derivatives,being used as electrocatalysts in the form of homogenous molecular films on glassy carbon electrode or as a part of a homogeneous photocatalytic water reduction system for HER processes.The analysis of the photo(-electro)catalytic activity of these macrocycles indicated that the Covalent-organic frameworks are highly promising catalysts for H2 evolution from WS.
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    Simulation of the L-valve in the circulating fluidized bed with a coarse-grained discrete particle method

    Ruixiang TangZheng ZouJi XuJunwu Wang...
    266-280页
    查看更多>>摘要：Stable and controllable solid flow is essential in circulating fluidized bed(CFB)systems.The L-valve is a typical non-mechanical valve that can provide flexible solid feeding.The investigation of the solid cir-culation rate and the hydrodynamic characteristics of the L-valve is crucial to its design and operation.The gas-solid flow in the L-valve of a full-loop CFB is studied with the coarse-grained discrete particle method(EMMS-DPM).Good agreements on the solid circulation rate and the pressure drop through the L-valve are achieved between the simulated and experimental data.The solid circulation rate increases linearly with the aeration velocity until the stable particle circulation of the CFB is destroyed.The flow patterns in the horizontal section of L-valve are gas-solid slug flow above the stationary solid layer and the moving solid layer,respectively.The effects of L-valve geometric parameters on the solid flow characteristics are also investigated.The results indicate that reducing the diameter and length of the horizontal section of L-valve can improve the solid transport efficiency,especially at low aeration ve-locity.Besides,the solid conveying capacity and flow stability are improved when the sharp bend of L-valve is modified to be a gradual bend.
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    Simulation and evaluation study of atmospheric aerosol nonsphericity as a function of particle size

    Qianjun MaoXin Nie
    281-291页
    查看更多>>摘要：Aerosol nonsphericity causes great uncertainty in radiative forcing assessments and climate simulations.Although considerable studies have attempted to quantify this uncertainty,the relationship between aerosol nonsphericity and particle size is usually not considered,thus reducing the accuracy of the re-sults.In this study,a coupled inversion algorithm combining an improved stochastic particle swarm optimization algorithm and angular light scattering is used for the nonparametric estimation of aerosol nonsphericity variation with particle size,and the optimal sample selection method is employed to screen the data.Based on the verification of inversion accuracy,the variation of aerosol aspect ratio with particle size based on the ellipsoidal model in global regions has been obtained from Aerosol Robotic Network(AERONET)data,and the effect of nonsphericity on radiative forcing and dry deposition has been studied.The results show that the aspect ratio increases with particle size in all regions,with the maximum ranging from 1.4 to 1.8 in the desert,reflecting the differences in aerosol composition at different particle sizes.In radiation calculations,considering aerosol nonsphericity makes the aerosol cooling effect weaker and surface radiative fluxes increase,but hardly changes the aerosol absorption,with maximum differences of 9.22％and 22.12％at the bottom and top of the atmosphere,respectively.Meanwhile,the differences in radiative forcing between aspect ratios as a function of particle size and not varying with particle size are not significant,averaging less than 2％.Besides,the aspect ratio not varying with particle size underestimates the deposition velocity of small particles and overestimates that of large particles compared to that as a function of particle size,with maximum differences of 7％and 4％,respectively.
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    Coupled simulation of fluid-particle interaction for large complex granules:A resolved CFD-DEM method for modelling the airflow in a vertical fixed bed of irregular sinter particles

    Chengzhi LiYu ZhangJiahe ShenWei Zhang...
    292-306页
    查看更多>>摘要：A resolved CFD-DEM method is proposed to simulate the fluid-particle interaction for large complex granules.The airflow in a vertical sinter fixed bed is numerically studied using this method.The multi-sphere clumped method is used to create irregular sinter particles in DEM.The immersed boundary method and dynamic cell refinement are applied to describe the fluid flow around particles with higher resolution,by which the fluid-particle interaction can be simulated more accurately.The simulation results presented the packing voidage distributions and the airflow fields in the sinter beds of different single and mixed particle size ranges.The bed pressure drops were simulated and the results were compared with the corresponding experimental ones.The good agreement indicated that the proposed resolved CFD-DEM method is an effective tool to model the fluid-particle interaction for irregular large granules in the gas-solid multi-phase systems.
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    Optimized design of a linear vibrating screen based on efficiency maximisation and mesh wear minimisation employing discrete element method

    Omid AfsariKamyar Hashemnia
    307-322页
    查看更多>>摘要：This article investigates the combined effect and the order of influence of feed rate,inclination angle,vibration amplitude,frequency,and angle on the efficiency and mesh wear rate of a linear vibrating screen,as well as the average velocity,and mass of the accumulated particles.The discrete element modeling simulations were conducted using LIGGGHTS open-source code to analyze particles behaviour.The Taguchi method was employed to evaluate the combined effect of the parameters.Finally,the simulation results were analyzed using analysis of variance.The optimal values of the parameters for maximising efficiency and minimising mesh wear were determined using grey relational analysis.The results indicated that the most effective parameters on screening efficiency and average velocity of particles were the inclination angle,vibration angle,frequency,amplitude,and feed rate,respectively.The most influential parameters on screen mesh wear rate were feed rate,inclination angle,vibration angle,frequency,and amplitude,respectively.
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    Numerical simulation of water-slag elbow erosion-inhibiting by regulating the slag injection position with a novel preceding rotating sheet structure

    Fopeng WenLiuyun XuYixiang ChenZhaofu Deng...
    323-339页
    查看更多>>摘要：The elbow erosion seriously jeopardizes the safe and stable operation of water-slag discharge pipeline of the coal gasification system.This work simulated water-slag elbow characteristics with various slag injection positions by simulating five simplified and representative erosion categories,including A-type horizontal-vertical elbow with an upstream flow,B-type horizontal-vertical elbow with a downstream flow,C-type vertical-horizontal elbow with an upstream flow,D-type vertical-horizontal elbow with a downstream flow and E-type horizontal-horizontal elbow.Compared with the C/D-type elbow,where particles were injected uniformly,the A-type elbow and E-type elbow were found to increase erosion rate,while the B-type elbow decreases erosion rate.An interesting discovery is that the elbow erosion rate is relatively low for small particles when particles are injected from the middle and bottom positions of the inlet section of the elbow.Based on the observation,a novel preceding rotating sheet structure was developed to regulate the particle injection position.It shows an excellent anti-erosion performance by reducing the maximum erosion rate of particles with diameters of 50,100,and 200 μm by 23％,35％,and 43％,respectively.
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    A model for predicting the segregation directions of binary Geldart B particle mixtures in bubbling fluidized beds

    Chenmin LiuYuemin ZhaoYanjiao LiYuqing Feng...
    340-349页
    查看更多>>摘要：In gas fluidization processes involving different types of particles,the mixing or segregation behavior of the solid mixture is crucial to the overall outcome of the process.This study develops a model to predict the segregation directions of binary mixtures of Geldart B particles with density and size differences in bubbling fluidized beds.The proposed model was established by combining the particle segregation model,a previous particle segregation model,with a derived bed voidage equation of the bubbling fluidization based on the two-phase theory.The model was then analyzed with different function graphs of the model equations under various conditions.The results indicated that an increase in gas velocity or volume fraction of larger particles would strengthen size segregation,causing the larger and less dense components to descend.To validate the model,42 sets of data collected from 6 independent literature sources were compared with the predictions of the model.When the gas velocities were below 3.2 times the minimum gas velocity,the predictions were consistent with experimental results.This study has shed new light on the mechanisms of particle segregation in binary fluidized systems and provides a theoretical foundation for designing and manipulating gas-solid fluidized reactors.
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    Analysis of cohesive particles mixing behavior in a twin-paddle blender:DEM and machine learning applications

    Behrooz JadidiMohammadreza EbrahimiFarhad Ein-MozaffariAli Lohi...
    350-363页
    查看更多>>摘要：This research paper presents a comprehensive discrete element method(DEM)examination of the mixing behaviors exhibited by cohesive particles within a twin-paddle blender.A comparative analysis between the simulation and experimental results revealed a relative error of 3.47％,demonstrating a strong agreement between the results from the experimental tests and the DEM simulation.The main focus centers on systematically exploring how operational parameters,such as impeller rotational speed,blender's fill level,and particle mass ratio,influence the process.The investigation also illustrates the significant influence of the mixing time on the mixing quality.To gain a deeper understanding of the DEM simulation findings,an analytical tool called multivariate polynomial regression in machine learning is employed.This method uncovers significant connections between the DEM results and the operational parameters,providing a more comprehensive insight into their interrelationships.The multivariate polynomial regression model exhibited robust predictive performance,with a mean abso-lute percentage error of less than 3％for both the training and validation sets,indicating a slight deviation from actual values.The model's precision was confirmed by low mean absolute error values of 0.0144(80％of the dataset in the training set)and 0.0183(20％of the dataset in the validation set).The study offers valuable insights into granular mixing behaviors,with implications for enhancing the efficiency and predictability of the mixing processes in various industrial applications.
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    Combustion characteristics of low-quality lignite for different bed material sphericities in a circulating fluidized bed boiler:A numerical study

    Bar(i)? GürelGül?ah Karaca DolgunOsman (I)pekAli Ke?eba?...
    364-382页
    查看更多>>摘要：This study delves into the combustion behavior of various lignite types within a circulating fluidized bed boiler(CFBB),with a primary focus on the impact of different bed material sphericity ratios(0.5,0.7,and 0.9).Utilizing bed material with a sphericity ratio of 0.9 sourced from the Çan power plant and verified through experimentation,the research reveals several key findings.Notably,furnace temperatures tended to rise with higher sphericity ratios,albeit with variations between lignite types,particularly highlighting the complexity of this relationship in the case of GLI-Tunçbilek lignite.Pressure levels in the combustion chamber remained consistent across different sphericity ratios,indicating minimal influence on pressure dynamics.Improved combustion efficiency,especially at the bottom of the boiler,was observed at lower sphericity levels(0.5 and 0.7)for Çan lignite,as reflected in CO2 mole fractions.While NOx emissions generally decreased with lower sphericity,the sensitivity to sphericity varied by lignite type,with Ilgin lignite showcasing low NOx but high SO2 emissions,underscoring the intricate interplay between lignite properties,sphericity,and emissions.Overall,this study advances our understanding of CFBB combustion dynamics,offering insights valuable for optimizing performance and emissions control,particularly in lignite-based power.
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