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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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    Data driven reduced modeling for fluidized bed with immersed tubes based on PCA and Bi-LSTM neural networks

    Jiabin FangWenkai CuHuang LiuHuixin Zhang...
    1-18页
    查看更多>>摘要：The fast and accurate reduced-order modeling of fluidized beds is a challenging task in the field of fluid dynamics,owing to their high dimensionality and nonlinear dynamic behavior.In this study,a nonin-trusive reduced order modeling method,the reduced order model based on principal component analysis and bidirectional long short-term memory networks(PBLSTM ROM),was developed to capture complex spatio-temporal dynamics of fluidized beds.By combining principal component analysis and Bidirectional long-short-term memory networks,the PBLSTM ROM effectively extracted dynamic evo-lution information without any prior knowledge of governing equations,enabling reduced-order modeling of unsteady flow fields.The PBLSTM ROM was validated using the solid volume fraction and gas velocity flow fields of a fluidized bed with immersed tubes,showing superior performance over both the PLSTM and PANN ROMs in accurately capturing temporal changes in the fluidization fields,especially in the region near immersed tubes where severe fluctuations appear.Moreover,the PBLSTM ROM improved the simulation speed by five orders of magnitude compared to traditional computational fluid dynamics simulations.These findings suggest that the PBLSTM ROM presents a promising approach for analyzing the complex fluid flows in engineering practice.
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    Synthesis of core-shell nanostructured SiO2/TiO2 photocatalysts via atomic layer deposition in a fluidized bed with central tube

    Wei LiuDaoyin LiuZuyang ZhangZhenkun Sun...
    19-28页
    查看更多>>摘要：Fluidized bed atomic layer deposition is an efficient technique for particle coating with precise control over the film thickness and uniformity at the sub-nanoscale.In this study,a fluidized bed with a central tube is designed,where the central tube has two roles:improve fluidization and deliver precursors separately.The synthesis of core-shell structured SiO2/TiO2 nanoparticle catalysts for photodegradation of tetracycline hydrochloride(TC)is carried out using TiCl4 and H2O as precursors at 180 ℃ under atmospheric pressure.Under the combination of vibration and central tube,the segregation of agglomerate size along the bed height is weakened,and the prepared SiO2/TiO2 nanoparticles show excellent photocatalytic degradation performance:the degradation efficiency on TC is 96％under 300 W xenon lamp irradiation for 60 min.The mechanism of enhanced photocatalytic activity is due to the Ti-O-Si bonds generated at the interface,which increase the ability to absorb sunlight and accelerate the separation of holes and electrons.
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    Multilayer polyethylene separator with enhanced thermal properties for safe lithium-ion batteries

    Ying JiangChen SunFeilong DongHaiming Xie...
    29-37页
    查看更多>>摘要：The separator plays an important part in battery safety and performance.Polyolefin separators are widely used in commercial Lithium-ion batteries(LIBs),owing to their excellent properties,but they suffer from serious thermal shrinkage and poor electrolyte wettability.Thus,a multilayer separator(ASPESA)is developed by coating two thin layers of low-density polyethylene(LDPE)and Al2O3 on both sides of a polyethylene membrane using a facile and environmentally friendly casting technique.The ASPESA separator demonstrates a shutdown function at 120 ℃ and shows enhanced thermal stability under 185 ℃,with a small thermal shrinkage of 1％.Meanwhile,the LDPE and Al2O3 layers can improve the electrolyte wettability and electrolyte uptake(407.23％).The multilayer ASPESA separator delivers an excellent cycle performance in LiFePO4‖Li cells with a discharge capacity of 144.5 mAh g-1 after 900 cycles,with a high-capacity retention of 98.9％(compared to the 5th cycle).Therefore,the multilayer ASPESA separator has great utilization potential as a high-safety separator in LIBs.
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    Polymeric hollow fiber membrane for cooling crystallization seeding:On the mechanism of induced nucleation based on thermal transfer

    Zeman HeShaofu DuGuanying ShaoPeiyu Li...
    38-49页
    查看更多>>摘要：Cooling crystallization is an important separation process and particuology technology that requires ac-curate nucleation control strategies.Herein,we introduced the polymeric hollow fiber membrane with proper thermal properties as the effective nucleation induction interface during cooling crystallization.The heterogeneous nucleation control mechanism was introduced based on classical nucleation theory and the thermal transfer process.Interfacial properties and the thermal conductivity of two kinds of polymeric membranes,polytetrafluoroethylene(PTFE)and polyethersulfone(PES),were measured and simulated with the developed model.These two membranes possessed different nucleation induction periods,nucleation rates and crystallization performances,which validated that the hollow fiber membrane module could effectively accelerate the nucleation process compared to conventional cooling crystalliza-tion owing to the shorter nucleation induction period and the reduced solution surface tension.Due to the higher hydrophobicity and the lower roughness of the membrane surface,the PTFE membrane possessed a more moderate performance in generating stable heterogeneous nucleation than the one of PES mem-brane.Thus,the adjustable membrane property enabled the hollow fiber membrane-assisted cooling crystallization to possess the accurate nucleation control and desired terminal particle products.
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    A review of MXene-derived quantum dots:Synthesis,characterization,properties,and applications

    Chunhe ZhouKar Ban TanWenjuan HanLi Wang...
    50-71页
    查看更多>>摘要：Cutting MXene to a minimum size and forming the derived two-dimensional MXene quantum dots(MQDs),which possess a unique intrinsic layered geometry structure,restricts exciton due to their novel spatial dimension.This gives rise to a broad spectrum of fascinating properties,rendering them for various applications.Herewith,the correlation between composition,structure,and processing control of MQDs is investigated systematically,giving further insight into the intrinsic and extrinsic properties.This review also provides an opportunity to explore new compositions,modify the properties,and tailor MQDs into the guided architectural design before any prospective applications.
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    CFD-DEM analysis of particle polydispersity on the performance of fluidised bed reactor during silane pyrolysis

    AkshayveerVijay M.Shinde
    72-87页
    查看更多>>摘要：A CFD-DEM model is developed for chemical vapour deposition of silane in a fluidized bed reactor to investigate the effect of polydispersity on local phase dynamics,mass and heat transport,as well as the rate of Si deposition.Both gas-phase fines formation and heterogeneous deposition on the seed particle,as well as the scavenging effect for Si particle growth,are incorporated.The method is first validated against the experimentally measured Si deposition rate,percentage of fine production and minimum fluidisation velocity.Subsequently,the properties,primarily particle intermixing,fluidisation behaviour and bubble dynamics along with the deposition process,are analyzed for several polydisperse beds under various operating conditions.The effect of polydispersity of the bed on a fraction of the bubble size,dense phase expansion and interchange coefficient between various phases is thoroughly investi-gated to establish a correlation with reactor performance.The results show that broad-Gaussian particle size distribution(PSD)exhibits excellent improvement in fluidisation behaviour,resulting in a high deposition rate,and minimum formation of Si fines.
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    Research on the cuttings discharge in air cushion chamber of slurry shield based on CFD-DEM coupling method

    Han WangWantao DingWeimin YangChengzhen Wang...
    88-105页
    查看更多>>摘要：The rapid discharge of cuttings from the air cushion chamber is crucial for the construction safety and excavation efficiency of the slurry shield.Previous studies have mainly focused on the transport char-acteristics of cuttings in the slurry discharge pipe,while the complete process of cuttings entering the slurry discharge pipe from the air cushion chamber until they are discharged was often overlooked.Based on the CFD-DEM coupling method and combined with actual engineering,this paper established a numerical model that can more completely reflect the cuttings discharge process during slurry shield tunneling,and the effects of the slurry velocity at slurry gate and scouring pipes,inclination angle of slurry discharge pipe,cuttings diameter and shape coefficient were investigated by analyzing the vari-ation in the mass flow rate,mass of discharged cuttings,and discharged ratio.The results revealed that increasing the slurry velocity can promote the discharge of cuttings.To keep the discharged rate at a high level,it is recommended that the slurry velocity at the slurry gate should be greater than 0.15 m/s.Reducing the inclination angle of the discharge pipe is conducive to the rapid discharge of cuttings.Cuttings with large diameter or small shape coefficient are more prone to accumulate in the air cushion chamber and cause clogging risk.The research results not only help to improve engineers'understanding of cuttings discharge in slurry shield,but also provide practical guidance for formulating relevant con-struction measures.
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    Molecular dynamics study of water molecules nucleation for fine particle removal:Effects of wettability and aggregation modes and comparison with experiment

    Junchao XuZhipeng ZhangLi LvYunfei Zhang...
    106-117页
    查看更多>>摘要：Water vapor nucleation on particle's surface plays an important role in dust removal,cloud formation,and particle measurement.However,the selectivity of nucleation sites and the nucleation characteristic of water molecule on the particle's surface are still unclear,especially for the aggregated particles.In this paper,the effects of particle wettability and aggregation modes on the selectivity of nucleation sites and the nucleation characteristics were investigated using molecular dynamics simulation.The results were compared with our earlier experimental findings.It illustrates how the contact angle of clusters,the growth velocity,and the growth duration are all influenced by the interaction coefficient between water and particles.Moreover,the nucleation sites of water molecules on the particle aggregation surface exhibit a definite selectivity.The primary indicator of this selectivity is the preferential nucleation of water molecules at the interfaces of linear chain aggregation particles,at the inner side of non-linear chain aggregation particles,and at the centers of ring aggregation.These results are in good agree-ment with our previous experimental findings.More significantly,additional research has revealed that subcritical-size clusters typically aggregate on two-particle surfaces spacing when the spacing smaller than the critical cluster size.
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    The swirl and pyrolysis reaction synergistically enhance solid-solid heat transfer and product separation in cyclone pyrolyzer

    Haorui NiuJingxuan YangWenhao LianNan Zhang...
    118-127页
    查看更多>>摘要：Cyclone pyrolyzer is a novel type of downer that combines centrifugal force field and double-layer cyclone vortex.Research on transfer behavior is helpful to optimize the pyrolyzer to meet the needs of pyrolysis.In this study,the Computational Particle Fluid Dynamics(CPFD)model is used to analyze the transfer behavior of binary particles,and finds that the swirl and reaction have a synergistic effect.This effect can increase the heating rate of the particles to the range of flash pyrolysis,and its mechanism lies in the flow field structure of the pyrolyzer.Due to the centrifugal force field,the particles gather to the near wall.The rapid swirl,which facilitates intense gas-solid heat transfer,leads to the rapid heating and pyrolysis of biomass particles.As the pyrolysis proceeds,the mass of the biomass particles becomes smaller and they are more easily affected by the gas flow in pyrolyzer.Under the action of gas flow,char particles serve as new heat carrier to form the inner cycle of particles,which strengthens the heating process.The pyrolysis products are discharged from the exhaust port in time with the flow field of the pyrolyzer to achieve separation from the heat carrier and inhibit the occurrence of secondary reactions.
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    Novel process for facile preparation of mesoporous silica-based materials with controllable pore structure from coal fly ash

    Jian-ming GaoZhen LiShujia MaYuanyuan Zhang...
    128-137页
    查看更多>>摘要：Extraction of silica from fly ash to produce mesoporous silica materials is one of the most important utilization approaches.Mesoporous silica could not be synthesized on a large-scale by conventional sol-gel method.In this paper,facile preparation of mesoporous silica with controllable pore structure from fly ash by the template-free process via two steps of mineral phase transformation and selective acid etching was proposed.The influence of crystalline structure and acid etching degree on structure of as-synthesized mesoporous silica materials was revealed,as well as mechanism of crystalline structure transformation and pore structure formation.The results show that mullite and quartz could be trans-formed into acid-soluble kaliophilite when fly ash reacted with K2CO3 at temperature of 800-1100 ℃.The hexagonal kaliophilite would be transformed into orthorhombic KAlSiO4-O1 phase when the temperature is controlled at 1100 ℃.Mesoporous silica with specific surface area of 475.93 m2/g and 642.57 m2/g could be synthesized from activated fly ash with kaliophilite and KAlSiO4-O1 phase crys-talline structure.By controlling the degree of acid etching,mesoporous silica materials with different pore structures can be obtained.This paper provides a cost-effective and large-scale process for the preparation of mesoporous silica materials with controllable pore structure from solid waste fly ash.
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