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Influence of filler characteristics on particle removal in fluid catalytic cracking slurry under an alternating electric field
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作者 Qiang Li Hui-Zhen Yang +3 位作者 Can Yang Qing-Zhu Qiu Wei-Wei Xu Zhao-Zeng Liu 《Petroleum Science》 SCIE EI CAS CSCD 2024年第3期2102-2111,共10页
The characteristics of the packing material under an alternating electric field are an important factor in the removal of FCCS particles.In this study,the electric field distribution of a separation unit consisting of... The characteristics of the packing material under an alternating electric field are an important factor in the removal of FCCS particles.In this study,the electric field distribution of a separation unit consisting of packed spheres under an alternating electric field is simulated,and the movement mechanism of catalyst particles is analysed.An"effective contact point"model is derived to predict the adsorption of filler contact points on catalyst particles under the alternating electric field,and the model is validated by simulations and experiments.The numerical calculation and experimental results indicate that the electrical properties of the filler spheres,the filler angleθ,and the frequency f of the alternating electric field affect the adsorption of catalyst particles.As the frequency of the electric field increases,the particle removal efficiency of the high-conductivity filler(silicon carbide)increases and then settles,and the separation efficiency of the low-conductivity filler(glass,zirconia)is not sensitive to the change in electric field frequency. 展开更多
关键词 Fluid catalyticcracking slurry(FCCS) PARTICLE ac electric field FILLERS REMOVAL
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High Density 3D Carbon Tube Nanoarray Electrode Boosting the Capacitance of Filter Capacitor
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作者 Gan Chen Fangming Han +6 位作者 Huachun Ma Pei Li Ziyan Zhou Pengxiang Wang Xiaoyan Li Guowen Meng Bingqing Wei 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第11期242-254,共13页
Electric double-layer capacitors(EDLCs)with fast frequency response are regarded as small-scale alternatives to the commercial bulky aluminum electrolytic capacitors.Creating carbon-based nanoarray electrodes with pre... Electric double-layer capacitors(EDLCs)with fast frequency response are regarded as small-scale alternatives to the commercial bulky aluminum electrolytic capacitors.Creating carbon-based nanoarray electrodes with precise alignment and smooth ion channels is crucial for enhancing EDLCs’performance.However,controlling the density of macropore-dominated nanoarray electrodes poses challenges in boosting the capacitance of line-filtering EDLCs.Herein,a simple technique to finely adjust the vertical-pore diameter and inter-spacing in three-dimensional nanoporous anodic aluminum oxide(3D-AAO)template is achieved,and 3D compactly arranged carbon tube(3D-CACT)nanoarrays are created as electrodes for symmetrical EDLCs using nanoporous 3D-AAO template-assisted chemical vapor deposition of carbon.The 3D-CACT electrodes demonstrate a high surface area of 253.0 m^(2) g^(−1),a D/G band intensity ratio of 0.94,and a C/O atomic ratio of 8.As a result,the high-density 3D-CT nanoarray-based sandwich-type EDLCs demonstrate a record high specific areal capacitance of 3.23 mF cm^(-2) at 120 Hz and exceptional fast frequency response due to the vertically aligned and highly ordered nanoarray of closely packed CT units.The 3D-CT nanoarray electrode-based EDLCs could serve as line filters in integrated circuits,aiding power system miniaturization. 展开更多
关键词 Compactly arranged Three-dimensional carbon tube nanoarray Dimensional carbon tube nanoarray Fast frequency response electric double-layer capacitors Layer capacitors ac line-filtering FILTERING
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Electrical characteristics of new three-phase traction power supply system for rail transit 被引量:1
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作者 Xiaohong Huang Hanlin Wang +4 位作者 Qunzhan Li Naiqi Yang Tao Ren You Peng Haoyang Li 《Railway Engineering Science》 2023年第1期75-88,共14页
A novel three-phase traction power supply system is proposed to eliminate the adverse effects caused by electric phase separation in catenary and accomplish a unifying manner of traction power supply for rail transit.... A novel three-phase traction power supply system is proposed to eliminate the adverse effects caused by electric phase separation in catenary and accomplish a unifying manner of traction power supply for rail transit.With the application of two-stage three-phase continuous power supply structure,the electrical characteristics exhibit new features differing from the existing traction system.In this work,the principle for voltage levels determining two-stage network is dissected in accordance with the requirements of traction network and electric locomotive.The equivalent model of three-phase traction system is built for deducing the formula of current distribution and voltage losses.Based on the chain network model of the traction network,a simulation model is established to analyze the electrical characteristics such as traction current distribution,voltage losses,system equivalent impedance,voltage distribution,voltage unbalance and regenerative energy utilization.In a few words,quite a lot traction current of about 99%is undertaken by long-section cable network.The proportion of system voltage losses is small attributed to the two-stage three-phase power supply structure,and the voltage unbal-ance caused by impedance asymmetry of traction network is less than 1‰.In addition,the utilization rate of regenerative energy for locomotive achieves a significant promotion of over 97%. 展开更多
关键词 Three-phase ac power supply Two-stage power supply structure electrical characteristics Current distribution Voltage losses Regenerative energy
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基于ACE与YOLOv5的电力遥感图像检测算法
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作者 张弢 蒋东东 +1 位作者 田喆文 王艺霖 《计算机仿真》 2024年第1期277-283,共7页
针对电力遥感图像采集时存在大量浓烟以及数据样本少等问题,提出一种基于对数变换的改进型自动色彩均衡与改进后YOLOv5s模型的遥感图像去雾检测算法,旨在通过提高数据集的图像质量进而提高检测网络的检测精度。构建的改进型自动色彩均... 针对电力遥感图像采集时存在大量浓烟以及数据样本少等问题,提出一种基于对数变换的改进型自动色彩均衡与改进后YOLOv5s模型的遥感图像去雾检测算法,旨在通过提高数据集的图像质量进而提高检测网络的检测精度。构建的改进型自动色彩均衡对电力遥感图像去雾增强,并通过图像质量和特征提取两方面进行了实验数据对比,实验结果表明改进的自动色彩均衡算法优于其它算法。其次,通过YOLOv5s检测算法对增强后的数据集进行训练,引入mosaic数据增强算法,并通过构建ghost卷积模块和NAM注意力模块降低了网络参数、提升了网络检测精度。 展开更多
关键词 电力遥感图像 自动色彩均衡算法 目标检测 多尺度金字塔
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Particle Agglomeration in Bipolar Barb Agglomerator Under AC Electric Field 被引量:6
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作者 黄超 马秀琴 +3 位作者 孙优善 王美艳 张长平 娄越雅 《Plasma Science and Technology》 SCIE EI CAS CSCD 2015年第4期317-320,共4页
The development of an efficient technology for removing fine particles in flue gas is essential as the haze is becoming more and more serious.To improve agglomeration effectiveness of fine particles,a dual zone electr... The development of an efficient technology for removing fine particles in flue gas is essential as the haze is becoming more and more serious.To improve agglomeration effectiveness of fine particles,a dual zone electric agglomeration device consisting of a charging chamber and an agglomeration chamber with bipolar barb electrodes was developed.The bipolar barb electric agglomerator with a polar distance of 200 mm demonstrates good agglomeration effectiveness for particles with a size less than 8.0μm under applied AC electric field.An optimal condition for achieving better agglomeration effectiveness was found to be as follows:flue gas flow velocity of3.00 m/s,particle concentration of 2.00 g/m^3,output voltage of 35 kV and length of the barb of16 ram.In addition,4.0-6.0μm particles haste the best effectiveness with the variation of particle volume occupancy of-3.2. 展开更多
关键词 fine particles agglomeration bipolar barb ac electric field
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An investigation into the deformation, movement and coalescence characteristics of water-in-oil droplets in an AC electric field 被引量:1
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作者 He Li-min Yang Dong-hai +3 位作者 Gong Rong-na Ye Tuan-jie Lü Yu-ling Luo Xiao-ming 《Petroleum Science》 SCIE CAS CSCD 2013年第4期548-561,共14页
Drop-drop coalescence is important in electric dehydrators used for oil-water separation in the oil industry.The deformation degree,angle between the electric field and the center line of two drops,effects of intensit... Drop-drop coalescence is important in electric dehydrators used for oil-water separation in the oil industry.The deformation degree,angle between the electric field and the center line of two drops,effects of intensities and frequencies of the electric field have been studied by analyzing droplet images.However,seldom have people investigated the movement and the relative velocity in the process of dropdrop coalescence.In this paper forces acting on a single droplet and horizontal water droplets in an AC electric field were analyzed,and experiments were carried out to investigate the deformation,movement and coalescence characteristics of droplets with white oil and water.With a micro high-speed camera system and image processing technology,the droplet images were collected and analyzed.The results indicate that the deformation is mainly affected by the electric field intensity,frequency,droplet diameter and the oil viscosity.High field strength and large diameter facilitate deformation of drops in the electric field.The effect of frequency and oil viscosity is not obvious.Higher frequency and higher oil viscosity will lead to smaller oscillation amplitude.The effect of electric field intensity and droplet diameter on oscillation amplitude is not obvious.When the center-to-center distance between droplets is large,the forces acting on droplets in the horizontal direction are mainly dipole-dipole attraction and drag forces.There is also the film-thinning force when droplets get closer.The forces are simplified and derived.Based on force analysis and Newton's second law,the relative movement is analyzed in different parts,and the relationship of center-to-center distance and time is in accordance with an explinear function at different stages.According to experimental data,the movement of 145 μm double droplets before coalescence can be fitted well with an explinear function at two stages.In addition,the whole movement process is investigated and can be estimated with a fourth order polynomial curve,from which the relative velocity of droplet movement can also be obtained.With an increases in electric field intensity and droplet diameter and a decrease in oil viscosity,the relative velocity increases.Only when the oil-water interfacial tension is obviously high,can it influence the relative movement significantly.The coalescence is mainly dipole coalescence and chain coalescence under influence of the AC electric field. 展开更多
关键词 DEFORMATION COALESCENCE VELOCITY ac electric field
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Overview of the Rectangular Wire Windings AC Electrical Machine 被引量:5
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作者 Yu Zhao Dawei Li +1 位作者 Tonghao Pei Ronghai Qu 《CES Transactions on Electrical Machines and Systems》 CSCD 2019年第2期160-169,共10页
The rectangular wire winding AC electrical machine has drawn extensive attention due to their high slot fill factor,good heat dissipation,strong rigidity and short end-windings,which can be potential candidates for so... The rectangular wire winding AC electrical machine has drawn extensive attention due to their high slot fill factor,good heat dissipation,strong rigidity and short end-windings,which can be potential candidates for some traction application so as to enhance torque density,improve efficiency,decrease vibration and weaken noise,etc.In this paper,based on the complex process craft and the electromagnetic performance,a comprehensive and systematical overview on the rectangular wire windings AC electrical machine is introduced.According to the process craft,the different type of the rectangular wire windings,the different inserting direction of the rectangular wire windings and the insulation structure have been compared and analyzed.Furthermore,the detailed rectangular wire windings connection is researched and the general design guideline has been concluded.Especially,the performance of rectangular wire windings AC machine has been presented,with emphasis on the measure of improving the bigger AC copper losses at the high speed condition due to the distinguished proximity and skin effects.Finally,the future trend of the rectangular wire windings AC electrical machine is prospected. 展开更多
关键词 ac copper losses the rectangular wire winding ac electrical machine process craft winding connection.
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Effective Response of Nonlinear Spherical Coated Composites Under External AC and DC Electric Field 被引量:1
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作者 SHEN Yu-Yan CHEN Xiao-Gang LI Qian-Qian CUI Wei HAO Yan-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第4期743-747,共5页
Under the external AC and DC electric field, the effective response of nonlinear spherical coated composites, which obey the constitutive relation of electric displaeement and electric field, is investigated in the di... Under the external AC and DC electric field, the effective response of nonlinear spherical coated composites, which obey the constitutive relation of electric displaeement and electric field, is investigated in the dilute limit by using the perturbation method. The local potentials in inclusion and host regions are derived at all harmonics. Moreover, the formulae of the effective linear and nonlinear responses are given in the dilute limit. 展开更多
关键词 nonlinear composites effective response ac electric field
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Industrial frequency single-phase AC traction power supply system for urban rail transit and its key technologies 被引量:1
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作者 Qunzhan Li 《Journal of Modern Transportation》 2016年第2期103-113,共11页
To avoid stray current and maintain the benefit of no phase-split in the DC traction power supply system, an AC traction power supply system was proposed for the urban public transport such as metro and light rail tra... To avoid stray current and maintain the benefit of no phase-split in the DC traction power supply system, an AC traction power supply system was proposed for the urban public transport such as metro and light rail transit. The proposed system consists of a main substation (MSS) and cable traction network (CTN). The MSS includes a single-phase main traction transformer and a negative-se- quence compensation device, while the CTN includes double-core cables, traction transformers, overhead catenary system, rails, etc. Several key techniques for the proposed system were put forward and discussed, which can be summarized as (1) the power supply principle, equivalent circuit and transmission ability of the CTN, the cable-catenary matching technique, and the selection of catenary voltage level; (2) the segmentation technology and status identification method for traction power supply network, distributed and centralized protection schemes, etc.; (3) a power supply scheme for single-line MSS and a power supply scheme of MSS shared by two or more lines. The proposed industrial frequency single-phase AC traction power supply system shows an excellent technical performance, good economy, and high reliability, hence provides a new alternative for metro and urban rail transit power supply systems. 展开更多
关键词 Urban rail transit 50 Hz industrial frequency single-phase ac traction power supply Cable traction
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A Low-Cost, Smart AC Charging System for Electric Vehicle 被引量:1
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作者 Bo Wang 《Smart Grid and Renewable Energy》 2013年第2期213-216,共4页
In industry development strategy of electric vehicles, apart from concerns on the development of electric vehicles, we also need to consider the issue of charging facilities construction. Firstly, through analysis, th... In industry development strategy of electric vehicles, apart from concerns on the development of electric vehicles, we also need to consider the issue of charging facilities construction. Firstly, through analysis, this paper discusses the importance of AC charging points for electric vehicle development. By studying existing AC charging points on the market, it presents a low-cost smart AC charging system to reduce the cost investigated by power companies and operational bodies when laying of a large number of AC charging points. Compared with the conventional one, the proposed system has prominent features of low cost, small footprint and low investment. 展开更多
关键词 electrical Vehicle CHARGING FacILITY ac CHARGING POINT
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Analyzing Electric Circuits with Computer Algebra
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作者 Haiduke Sarafian 《American Journal of Computational Mathematics》 2023年第1期91-98,共8页
This report shows how starting from classic electric circuits embodying commonly electric components we have reached semi-complicated circuits embodying the same components that analyzing the signal characteristics re... This report shows how starting from classic electric circuits embodying commonly electric components we have reached semi-complicated circuits embodying the same components that analyzing the signal characteristics requires a Computer Algebra System. Our approach distinguishes itself from the electrical engineers’ (EE) approach that relies on utilizing commercially available software. Our approach step-by-step shows how Kirchhoff’s rules are applied conducive to the needed circuit information. It is shown for the case at hand the characteristic information is a set of coupled differential equations and that with the help of Mathematica numeric solutions are sought. Our report paves the research road for unlimited creative similar circuits with any degree of complications. Occasionally, by tweaking the circuits we have addressed the “what if” scenarios widening the scope of the investigation. Justification of the accuracy of our analysis for the generalized circuits is cross-checked by arranging the components symmetrizing the circuit leading to an intuitively predictable reasonable result. Mathematica codes are embedded assisting the interested reader in producing and extending our results. 展开更多
关键词 Characteristics of electric Circuits DC and ac Driven Circuits Computer Algebra System MATHEMATICA
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Analyses of temperature-dependent interface states,series resistances,and AC electrical conductivities of Al/p Si and Al/Bi_4Ti_3O_(12)/p Si structures by using the admittance spectroscopy method
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作者 Mert Ylldlrlm Perihan Durmus Semsettin Altlndal 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第10期608-613,共6页
In this study, Al/p-Si and Al/Bi4Ti3O12/p-Si structures are fabricated and their interface states (Nss), the values of series resistance (Rs), and AC electrical conductivity (σac) are obtained each as a functio... In this study, Al/p-Si and Al/Bi4Ti3O12/p-Si structures are fabricated and their interface states (Nss), the values of series resistance (Rs), and AC electrical conductivity (σac) are obtained each as a function of temperature using admit- tance spectroscopy method which includes capacitance-voltage (C-V) and conductance-voltage (G-V) measurements. In addition, the effect of interfacial Bi4Ti3012 (BTO) layer on the performance of the structure is investigated. The voltage- dependent profiles of Nss and Rs are obtained from the high-low frequency capacitance method and the Nicollian method, respectively. Experimental results show that Nss and Rs, as strong functions of temperature and applied bias voltage, each exhibit a peak, whose position shifts towards the reverse bias region, in the depletion region. Such a peak behavior is attributed to the particular distribution of Nss and the reordering and restructuring of Nss under the effect of temperature. The values of activation energy (Ea), obtained from the slope of the Arrhenius plot, of both structures are obtained to be bias voltage-independent, and the Ea of the metal-ferroelectric-semiconductor (MFS) structure is found to be half that of the metal-semiconductor (MS) structure. Furthermore, other main electrical parameters, such as carrier concentration of acceptor atoms (NA), built-in potential (Vbi), Fermi energy (EF), image force barrier lowering (△φb), and barrier height (φb), are extracted using reverse bias C 2-V characteristics as a function of temperature. 展开更多
关键词 MFS structures Bismuth titanate temperature dependent activation energy ac electrical con-ductivity
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Effective response of nonlinear cylindrical coated composites under external AC and DC electric field
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作者 沈玉艳 陈小刚 +2 位作者 崔巍 郝艳华 李倩倩 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第2期757-762,共6页
This paper uses the perturbation method to study effective response of nonlinear cylindrical coated composites. Under the external AC and DC electric field Ea (1 +sin ωt), the local potentials of composites at all... This paper uses the perturbation method to study effective response of nonlinear cylindrical coated composites. Under the external AC and DC electric field Ea (1 +sin ωt), the local potentials of composites at all harmonic frequencies are induced. An effective nonlinear response to composite is given for the cylindrical coated inclusions in the dilute limit. 展开更多
关键词 nonlinear composites effective nonlinear response the external ac and DC electric field
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Effective response in nonlinear spherical coated composites under external AC and DC electric fields
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作者 包曙红 陈小刚 +2 位作者 李倩倩 郭军明 翟丽丽 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第8期428-434,共7页
By using the perturbation method, effective nonlinear direct current (DC) and alternating current (AC) responses of nonlinear composites with spherical coated inclusions randomly embedded in a host medium are stud... By using the perturbation method, effective nonlinear direct current (DC) and alternating current (AC) responses of nonlinear composites with spherical coated inclusions randomly embedded in a host medium are studied under the action of an external electric field Ea = E0 + E1 sinωt + E3 sin 3ωt with different amplitudes and frequencies. The local potentials of composites at all harmonics are given in the inclusion particles and the host regions. All effective nonlinear responses to composites and the relationship between the effective nonlinear responses at all harmonics are also deduced for the spherical coated inclusions in a dilute limit. 展开更多
关键词 nonlinear spherical coated composites effective nonlinear response the external ac andDC electric field
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Effective Response of Nonlinear Composite under External AC and DC Electric Field
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作者 LIU Ye LIANG Fang-Chu SHEN Hong-Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第4X期731-734,共4页
A perturbation method is used to study effective response of nonlinear Kerr composites, which are subject to the constitutive relation of electric displacement and electric field, Dα=εαE+xα|E|^2E. Under the ext... A perturbation method is used to study effective response of nonlinear Kerr composites, which are subject to the constitutive relation of electric displacement and electric field, Dα=εαE+xα|E|^2E. Under the external AG and DC electric field Eapp = Eα(1 + sinωt), the effective nonlinear responses and local potentials are induced by the cubic nonlinearity of Kerr materials at all harmonics. As an example in three dimensions, we have investigated this kind of nonlinear composites with spherical inclusions embedded in a host. At all harmonic frequencies, the potentials in inclusion and host regions are derived. Furthermore, the formulae of the effective linear and nonlinear responses are given in the dilute Iimit. 展开更多
关键词 nonlinear composite dielectric response ac electric field
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Research on Total Electric Field for DC Lines Converted from Double-Circuit AC Lines
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作者 Xiaoqian Ma Jiayu Lu +1 位作者 Kun He Wensheng Gao 《Energy and Power Engineering》 2017年第4期598-610,共13页
With rapid growth of power demand, transmission capacity is also in urgent need of upgrading. In some cases, converting existing AC transmission lines to DC lines can Improve the transmission capacity and reduce the c... With rapid growth of power demand, transmission capacity is also in urgent need of upgrading. In some cases, converting existing AC transmission lines to DC lines can Improve the transmission capacity and reduce the construction investment. In this paper, the upstream finite element method was expanded to calculate the total electric field of same tower multi-circuit DC lines converted from double-circuit AC lines, and the validity of the algorithm was confirmed by experiments. Taking a DC line converted from a typical same tower 500 kV double-circuit AC transmission line as an example, the surface electric field and the ground total electric field in different pole conductor arrangement schemes were calculated and analyzed, and the critical height of pole conductors for DC lines in residential and non-residential area were determined. Then, the corridor width of DC and AC lines at critical height in residential and non-residential areas before and after AC-DC line transformation were compared. The results indicate that for DC lines converted from common 500 kV double-circuit AC lines, the ground total electric field can meet the requirements of corresponding standard with appropriate pole conductor arrangement schemes. 展开更多
关键词 DC LINES Converted from ac LINES Multi-Circuit DC LINE at SAME Tower Pole Conductor BUNDLES Arrangement Scheme Total electric Field Line-to-Ground Distance Corridor Width
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HC-55 Single-Phase AC Series-Excitation Commutator Motor
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《China's Foreign Trade》 1997年第2期20-20,共1页
The HC-55 single-phase AC series-excitation commutator motor exported to Japan by the Linquan Motor Factory is an open-type motor characterized by simple structure, small volume, high rotary speed, large starting torq... The HC-55 single-phase AC series-excitation commutator motor exported to Japan by the Linquan Motor Factory is an open-type motor characterized by simple structure, small volume, high rotary speed, large starting torque, reliable operation and easy installation. It can be used as a driving component for various kinds of household electrical appliances, such as electric mills, pulverlizers, small stirrers, vacuum cleaners and electric hair dryers, an ideal product for electrical equipment. 展开更多
关键词 HC-55 single-phase ac Series-Excitation Commutator Motor ac
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A Bright Pearl by the Huangpu River -Shanghai Electrical Machinery Mfg. Works
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作者 Tang Hongxing, Director of SEMMW 《Electricity》 1996年第1期17-19,共3页
Shanghai Electrical Machinery Manufacturing Works (abbr, SEMMW), a comprehensive electrical machinery manufacturing works with a modern production scale, is the first rank large stateowned works, which is one of the 5... Shanghai Electrical Machinery Manufacturing Works (abbr, SEMMW), a comprehensive electrical machinery manufacturing works with a modern production scale, is the first rank large stateowned works, which is one of the 500 largest industrial enterprises in China and in the first place of China’s power station equipment manufacturing industry. It is a hightechnology enterprise of Shanghai, 展开更多
关键词 A Bright Pearl by the Huangpu River Shanghai electrical Machinery Mfg WORKS ac
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Modeling and Implementation of AC Electrical Capacitance Tomography
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作者 K. Manikandan S. Sathiyamoorthy 《Circuits and Systems》 2016年第11期3818-3830,共14页
Electrical Capacitance Tomography (ECT) determines the dielectric permittivity of the interior object depending on the measurements of exterior capacitance. Generally, the electrodes are placed outside the PVC cylinde... Electrical Capacitance Tomography (ECT) determines the dielectric permittivity of the interior object depending on the measurements of exterior capacitance. Generally, the electrodes are placed outside the PVC cylinder where the medium to be imaged is present;but in ECT using inter-electrode capacitance measurements can be achieved by placing inside of the dielectric medium. In the proposed ECT system, the ECT sensor is modeled using ANSYS software and the model is implemented in real ECT system. For each step of measurement, a stable AC signal is applied to a pair of electrodes that form a capacitor. The novel system is to measure the capacitance range variation in picofarad and the corresponding voltage ranges from 1 volt to 4 volts. The switching speed of all combinational electrodes is implemented using embedded system to achieve higher speed performance of AC ECT system which eliminates the drift and stray capacitance error. This is yielding the original image of unknown multiphase medium inside the electrodes using Lab VIEW. This paper investigates several advantages such as improved overall system performance;simple structure, avoids stray capacitance effect, reduces the drift problem and achieves high signal to noise ratio. 展开更多
关键词 electrical Capacitance Tomography ANSYS Lab VIEW Embedded System ac Signal
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Electrical conductivity of MO(MO=FeO,NiO)-containing CaO-MgO-SiO_2-Al_2O_3 slag with low basicity 被引量:3
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作者 孙长余 郭兴敏 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第7期1648-1654,共7页
As a fundamental study on recovery of valuable metals from nonferrous metallurgical slags,electrical conductivity values of MO(MO=FeO,NiO)-containing CaO-MgO-SiO2-Al2O3 slag with a low basicity were measured at diff... As a fundamental study on recovery of valuable metals from nonferrous metallurgical slags,electrical conductivity values of MO(MO=FeO,NiO)-containing CaO-MgO-SiO2-Al2O3 slag with a low basicity were measured at different temperatures using AC impedance spectroscopy.The result shows that the electrical conductivity increased from 1.4 S/m to 14.4 S/m with the increase of the temperature from 1 573 to 1 773 K and the content of MO which is less than 12% under the constant mass ratio of (CaO+MgO) to (SiO2+Al2O3) of 0.47.Moreover,the increase magnitude of the electrical conductivity was also promoted with the increase of the content of MO.The electrical conductivity of FeO-containing slags was close to that of NiO-containing slags when the content was less than 8%;however,it was obviously larger than that of NiO-containing slags when the content was 12%.The activation energy of the electrical conductivity decreased with the increase of MO content. 展开更多
关键词 FEO NIO molten slag electrical conductivity ac impedance spectroscopy
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