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Depleted uranium oxide supported nickel catalyst for autothermal CO_(2)methanation in non-adiabatic reactor under induction heating 被引量:1
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作者 Lai Truong-Phuoc Jean-Mario Nhut +7 位作者 Loïc Vidal Cuong Duong-Viet Sécou Sall Corinne Petit Christophe Sutter Mehdi Arab Alex Jourdan Cuong Pham-Huu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第10期310-323,I0010,共15页
Undoped nickel-based catalysts supported on depleted uranium oxide allow one to carry out CO_(2)methanation process under extremely low reaction temperature under atmospheric pressure and powered by a contactless indu... Undoped nickel-based catalysts supported on depleted uranium oxide allow one to carry out CO_(2)methanation process under extremely low reaction temperature under atmospheric pressure and powered by a contactless induction heating.By adjusting the reaction conditions,the catalyst is able to perform CO_(2)methanation reaction under autothermal process operated inside a non-adiabatic reactor,without any external energy supply.Such autothermal process is possible thanks to the high apparent density of the UO_x which allows one to confine the reaction heat in a small catalyst volume in order to confine the exothermicity of the reaction inside the catalyst and to operate the reaction at equilibrium heat in-heat out.Such autothermal operation mode allows one to significantly reduce the complexity of the process compared to that operated using adiabatic reactor,where complete insulation is required to prevent heat disequilibrium,in order to reduce as much as possible,the heat exchange with the external medium.The catalyst displays an extremely high stability as a function of time on stream as no apparent deactivation.It is expected that such new catalyst with unprecedented catalytic performance could open new era in the field of heterogeneous catalysis where traditional supports show their limitations to operate catalytic processes under severe reaction conditions. 展开更多
关键词 CO_(2)methanation Auto-methanation induction heating Depleted uranium oxide Electrification process Operando DRIFTS
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SIMULATION OF TEMPERATURE FIELD IN ULTRA-HIGH FREQUENCY INDUCTION HEATING AND VERIFICATION 被引量:2
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作者 李奇林 徐九华 苏宏华 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2013年第2期155-161,共7页
An experimental and numerical study on the temperature field induced in the ultra-high frequency induction heating is carried out.With an aim of predicting the thermal history of the workpiece,the influence factors of... An experimental and numerical study on the temperature field induced in the ultra-high frequency induction heating is carried out.With an aim of predicting the thermal history of the workpiece,the influence factors of temperature field,such as the induction frequency,the dimension of coil and the gap between coil and workpiece,are investigated considering temperature-dependent material properties by using FLUX 2Dsoftware.The temperature field characteristic in ultra-high induction heating is obtained and discussed.The numerical values are compared with the experimental results.A good agreement between them is observed with 7.9% errors. 展开更多
关键词 ultra-high frequency induction heating temperature field FLUX 2Dsoftware
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Zero-voltage switching converter absorbing parasitic parameters for super high frequency induction heating 被引量:1
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作者 Zheng-shi WANG Hui-ming CHEN 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2008年第4期564-571,共8页
This paper presents a novel mega-Hz-level super high frequency zero-voltage soft-switching converter for induction heating power supplies. The prominent advantage of this topology is that it can absorb both inductive ... This paper presents a novel mega-Hz-level super high frequency zero-voltage soft-switching converter for induction heating power supplies. The prominent advantage of this topology is that it can absorb both inductive and capacitive parasitic components in the converter. The switch devices operate in a zero-voltage soft-switching mode. Consequently, the high voltage and high current spikes caused by parasitic inductors or capacitors oscillation do not occur in this circuit, and the high power loss caused by high frequency switching can be greatly reduced. A large value inductor is adopted between the input capacitor and the switches, thus, this novel converter shares the benefits of both voltage-type and current-type circuits simultaneously, and there are no needs of dead time between two switches. The working principles in different modes are introduced. Results of simulation and experiments operated at around 1 MHz frequency verify the validity of parasitic components absorption and show that this convener is competent for super high frequency applications. 展开更多
关键词 induction heating Super high frequency Soft-switching converter Parasitic parameters
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Formation and wear behaviors of in-situ Al3Ti/Al composites using aluminum and titanium fibers under electromagnetic induction heating 被引量:1
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作者 MA Jun NIU Li-bin +2 位作者 WU Hong GAO Chong AN Yu-jiao 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第12期3594-3602,共9页
Under various electromagnetic induction heating powers,different Al3Ti/Al composites were fabricated by in-situ synthesis method from aluminum and titanium fibers.Microstructures and particles distribution of the comp... Under various electromagnetic induction heating powers,different Al3Ti/Al composites were fabricated by in-situ synthesis method from aluminum and titanium fibers.Microstructures and particles distribution of the composites were examined by XRD,SEM and EDS.The results show that no other intermetallic compounds beside Al3Ti can be in-situ synthesized.Around the titanium fibers,the reaction zones and diffusion zones can be obviously found.Due to the stirring of the electromagnetic function,the formation of the micro-cracks inside the reaction zone was conducive to the peeling off of the Al3Ti particles,and ensures the continuous reaction between liquid aluminum and titanium fibers,as well as the diffusion of Al3Ti particles.At the same time,there were secondary splits of Al3Ti particles located in diffusion zones.Two-body abrasion test shows that with the increase of induction heating power,the wear rates of the composites reduced and the number of grooves decreased. 展开更多
关键词 in-situ synthesis induction heating Al3Ti intermetallic particle distribution wear behaviors
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Conversion of induction heating temperature from ANSYS to DEFORM 被引量:1
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作者 BAI Yunfeng JIANG Hong 《Baosteel Technical Research》 CAS 2011年第4期8-11,共4页
In the production of hot extrusion pipes, the billet will be heated in an induction furnace, before piercing or extrusion,to a certain temperature. The induction heating temperature field profile in the billet will ex... In the production of hot extrusion pipes, the billet will be heated in an induction furnace, before piercing or extrusion,to a certain temperature. The induction heating temperature field profile in the billet will exert an influence on the deformation processes. The study has developed an data conversion program to convert the temperature data from induction heating by ANSYS to deformation simulation software DEFORM; therefore, not only the relatively accurate temperature field can be made available, compared with the usually assumed uniform temperature field, but also the connection between induction heating and deformation can be established, which is essential to evaluate the processing parameters. Numerical simulation of the piercing processes of different temperature fields by induction heating was carded out, and the results have shown that the different initial temperature fields in the billet can lead to different deformation curves, which indicates that the conversion program is necessary to study the production process of hot extrusion pipes. 展开更多
关键词 induction heating numerical simulation data conversion BILLET PIERCING
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Mathematical modeling of induction heating of discard substitution block for billet hot extrusion process 被引量:1
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作者 ZHU Hongda LEI Zuosheng +3 位作者 GUO Jiahong ZHOU Yueming JIN Xiaoli GAO Qi 《Baosteel Technical Research》 CAS 2016年第1期28-32,共5页
A magnetic and temperature field-coupled mathematical model is proposed to calculate the induction heating process of a discard substitution block for billet hot extrusion process. The mathematical model is validated ... A magnetic and temperature field-coupled mathematical model is proposed to calculate the induction heating process of a discard substitution block for billet hot extrusion process. The mathematical model is validated by comparing simulation results with temperature measurements recorded during physical modeling. Based on systematical analysis of calculation results, a quantitative sawtooth induction power curve was proposed to realize the aim of achieving the best distributed temperature field in the block within the shortest induction time. 展开更多
关键词 induction heating discard substitution hot extrusion mathematical modeling
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Progress on research of induction heating in Baosteel 被引量:1
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作者 WU Cunyou ZHOU Yueming JIN Xiaoli 《Baosteel Technical Research》 CAS 2016年第1期21-27,共7页
Owing to the development of new products and higher requirement of product properties, the current existing induction heating technology of Baosteel can no longer satisfy the new requirements of the product line. Cont... Owing to the development of new products and higher requirement of product properties, the current existing induction heating technology of Baosteel can no longer satisfy the new requirements of the product line. Control of the induction heating temperature to an appropriate value is a key consideration in induction heating technology. To obtain acculturated temperatures, investigations were focused on the parameters of an induction heating system, including those of induction heating equipment and heating processes. In these investigations, computer simulation was used to model the induction heating process, followed by physical experimentation to verify and improve the simulation model; finally, optimized induction heating parameters were suggested. The use of computer simulations dramatically decreased physical experimental times, and the computed heating parameters were used to guide the physical experimentation and design of the product line ; this increased the efficiency of subsequent investigations. This study focuses on the development of induction heating technology in Baosteel, which includes the overall induction heating technology used in manufacturing backup rollers and in the thermomechanical control process. 展开更多
关键词 induction heating backup roller thermomechanical control process
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Experimental study of induction heating for steel plates
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作者 YU Zhan1,2),CHEN Hao 1,3) and ZHOU Yueming 1) 1) Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China 2) Shanghai University,Shanghai 200072,China 3) Shanghai Jiaotong University,Shanghai 200240,China 《Baosteel Technical Research》 CAS 2012年第1期53-56,共4页
The temperature distribution of steel plates is affected by heating rates and heating curves in the process of induction heating.The magnetic flux density inside the induction furnace was measured,the distribution of ... The temperature distribution of steel plates is affected by heating rates and heating curves in the process of induction heating.The magnetic flux density inside the induction furnace was measured,the distribution of magnetic flux density was analyzed and the uniform area of the induction heating temperature distribution was ascertained.The locations for measuring temperature were set and the temperature in different processes was measured.The influence of heating rates and heating curves on the temperature difference of steel plates was studied.The experimental results showed that the steel plates’ temperature difference increased with the increase of the heating rate.The temperature difference was obviously affected by different heating curves when the heating rate was the same.A suitable heating curve would be beneficial to reduction of steel plates’ temperature difference. 展开更多
关键词 induction heating magnetic field distribution heating rate heating curve temperature difference
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Effects of induction heating temperature fields on 321 stainless tubes during the expansion process
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作者 JIANG Hong BAI Yunfeng +2 位作者 XIE Chaoying FAN Yongge WU Ruiheng 《Baosteel Technical Research》 CAS 2011年第4期12-15,共4页
Expansion is an important operation in the hot extrusion production line of seamless steel tubes, which is to produce proper hollow billets for extrusion. The billet goes through induction heating before expanded to a... Expansion is an important operation in the hot extrusion production line of seamless steel tubes, which is to produce proper hollow billets for extrusion. The billet goes through induction heating before expanded to acquire a proper temperature. In this study, the effects of three types of inhomogeneous temperature fields on 321 stainless tubes during the expansion process were simulated. The results have indicated that it was an optimum temperature filed for expansion, where the temperature varied linearly along radial direction and the temperature was lower on the inner surface. This temperature field is beneficial to improving the stability of expansion and ensuring dimensional accuracy and increasing the utilization rate of tubular billet material. 展开更多
关键词 temperature field induction heating EXPANSION tubular billet
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Numerical simulation of multistage induction heating of coated steel tubes in Baosteel
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作者 HE Chunyao WEN Hongquan WU Cunyou 《Baosteel Technical Research》 CAS 2022年第1期42-46,共5页
The electromagnetic and temperature fields in the multistage intermediate-frequency induction heating of coated steel tubes were calculated using a numerical simulation.The influence of the voltage and frequency on th... The electromagnetic and temperature fields in the multistage intermediate-frequency induction heating of coated steel tubes were calculated using a numerical simulation.The influence of the voltage and frequency on the parameters of power circuit and heating temperature of the steel pipe was also analyzed.The results indicate that:(1) the electromagnetic field of induction heating is concentrated between the induction coil and steel tube and dissipated more at both ends of the coil;(2) during the induction heating,the temperature difference between the outer and inner walls of the steel pipe is approximately 3040 K,and the two temperatures rapidly tend to be the same after exiting the induction heater;(3)during the natural cooling,the temperature drop of the steel tube in the low-temperature section is approximately 10 K,and that in the high-temperature section is approximately 20 K;(4)the appropriate induction heating frequency and matching capacitance should be selected,so that the temperature of the steel pipe,especially at the outer wall,meets the coating process requirements,and as to achieve a synchronous improvement of the power efficiency and heating efficiency.This study is beneficial to building a more low-consumption and high-efficiency coating line of large-diameter steel pipes in Baosteel. 展开更多
关键词 steel tube coating line induction heating numerical simulation
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Numerical simulation of key factors influencing sparking during edge induction heating
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作者 WU Cunyou JIN Xiaoli ZHOU Yueming 《Baosteel Technical Research》 CAS 2018年第4期41-48,共8页
To address the phenomenon of sparking during the edge induction heating process in hot strip mills,this paper uses numerical simulation to systematically investigate the key factors influencing sparking and their effe... To address the phenomenon of sparking during the edge induction heating process in hot strip mills,this paper uses numerical simulation to systematically investigate the key factors influencing sparking and their effects.The distribution of induced current density in the steel plate above roller conveyor table during the heating process is calculated and compared under different conditions,including the relative positions of the steel plate and induction coil,the width of the steel plate,and changes in load. The results show that when a narrow steel plate is heated or the steel plate shifts to the side of the induction coil,sparking between the steel plate and roller conveyor is more likely to occur. 展开更多
关键词 induction heating steel plate sparking
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Temperature distribution of boron-manganese sheet metal blank by induction heating in application for hot stamping
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作者 Xu Ya Liu Peixing +1 位作者 Wang Zijian Zhang Yisheng 《Engineering Sciences》 EI 2014年第5期21-27,共7页
In order to speed up the production and save more energy in hot stamping process,the induction heating technology as a new effective heating method is considerable.Finite element(FE)-simulation and a series of experim... In order to speed up the production and save more energy in hot stamping process,the induction heating technology as a new effective heating method is considerable.Finite element(FE)-simulation and a series of experiments are carried out to research the temperature homogenization of induction heating with the face inductor.It is found the edge effect has a notable influence on the temperature distribution.Results concerning the mechanical properties of the stamped part as well as surface characteristics will be presented and discussed. 展开更多
关键词 telnperature distribution boron-manganese sheet induction heating hot stamping
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Magnetic flux leakage during longitudinal magnetic flux induction heating
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作者 LI Huagang 《Baosteel Technical Research》 CAS 2022年第1期30-35,共6页
A three-dimensional electromagnetic thermal coupled model of a 45#steel strip during longitudinal magnetic flux induction heating was established in this study.The influence of different power levels,frequencies,and e... A three-dimensional electromagnetic thermal coupled model of a 45#steel strip during longitudinal magnetic flux induction heating was established in this study.The influence of different power levels,frequencies,and electromagnetic shielding on the magnetic induction intensity and the heating of parts of different materials around the inductor was analyzed by calculating the magnetic induction intensity around the longitudinal flux induction heater under different conditions.The results show that leakage flux can be reduced up to 49%by electromagnetic shielding.The higher the frequency,the greater the electromagnetic shielding effect,and the lower the magnetic leakage around the inductor.Conversely,the higher the power,the greater the magnetic induction around the inductor.By adding electromagnetic shielding to reduce magnetic leakage of the inductor and replacing the metal part material around the inductor with stainless steel,the heat generation of the parts around the inductor can be greatly reduced. 展开更多
关键词 longitudinal flux induction heating numerical simulation magnetic flux leakage
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Effect of induction heating and tempering on properties and microstructures of quenched and tempered pipes
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作者 SUN Wen WU Cunyou +2 位作者 LIU Yaoheng MA Yannan ZHANG Zhonghua 《Baosteel Technical Research》 CAS 2020年第2期8-14,共7页
In this study,a C-Mn quenched steel tube was quickly tempered by induction heating,and the influence of the tempering temperature on its performance was studied and compared with that by traditional tempering. The res... In this study,a C-Mn quenched steel tube was quickly tempered by induction heating,and the influence of the tempering temperature on its performance was studied and compared with that by traditional tempering. The results show that the yield strength of both is quite strong with regular changes in the tempering temperature,but that the tensile strength of the tube tempered by induction heating is higher than that tempered by traditional tempering by about 25 MPa,and the elongation after induction tempering is significantly higher than that after traditional tempering. The differences in the microstructures of tubes after induction and traditional tempering were compared by metallographic microscope,scanning electron microscopy,and transmission electron microscopy.Theoretical analysis was also performed. Compared with traditional tempering,a fine dispersion of precipitated carbides occurs after induction tempering,which is the main reason for the performance differences. 展开更多
关键词 induction heating TEMPERING quenched steel tube property and microstructure
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Investigation of Thermal Losses in a Soft Magnetic Composite Using Multiphysics Modelling and Coupled Material Properties in an Induction Heating Cell
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作者 Leif Siesing Kenneth Frogner +1 位作者 Tord Cedell Mats Andersson 《Journal of Electromagnetic Analysis and Applications》 2016年第9期182-196,共15页
The complex interaction between material properties in an induction heating circuit was studied by multi physics simulation and by experimental verification in a full-scale laboratory heater. The work aims to illustra... The complex interaction between material properties in an induction heating circuit was studied by multi physics simulation and by experimental verification in a full-scale laboratory heater. The work aims to illustrate the complexity of the system of interacting materials, but also to propose a method to verify properties of soft magnetic composite materials in an integrated system and to identify which properties are the most critical under different circumstances and load cases. Heat losses at different loads were primarily studied, from DC currents to AC currents at 15, 20 and 25 kHz, respectively. A FE model for magnetic simulation was correlated with a corresponding model for heat simulation. The numerical model, as well as the established input material data, could be verified through the experimental measurements. In this particular study, the current loss in the litz wire was the dominant heat source, thus making the thermal conductivity of the SMC the most important property in this material. 展开更多
关键词 Soft Magnetic Moldable Composite MULTIPHYSICS Litz induction heating Thermal Losses Coupled Material Properties
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Improving the Efficiency of Induction Heating in the Air Gap of the Magnetic Circuit
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作者 Vladimir L.Lanin Evgeniy Ratnikau Alexander D.Hatskevich 《Journal of Electronic Research and Application》 2020年第4期1-4,共4页
Improving the efficiency of induction heating of parts in the air gap of the magnetic circuit is associated with the use of surface and edge effects.Through modeling in ANSYS Electromagnetics Suite 19.2 and experiment... Improving the efficiency of induction heating of parts in the air gap of the magnetic circuit is associated with the use of surface and edge effects.Through modeling in ANSYS Electromagnetics Suite 19.2 and experimental studies identified patterns of edge effect in the heated parts.To ensure the uniformity of induction heating of small parts and reduce the soldering time,the electrical switch of soldered parts is used,which with the help of device controller forms a secondary circuit with low electrical resistance and high density of eddy currents. 展开更多
关键词 induction heating The gap of the magnetic circuit Edge effect Secondary circuit
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Simulation of Induction Heating Process of Continuous Casting Slab
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作者 LIU Hao CHEN Li-liang ZHOU Jian-xin LIAO Dun-ming 《Computer Aided Drafting,Design and Manufacturing》 2007年第1期54-59,共6页
Induction heating of steel in continuous casting/rolling process is an important means to reduce energy consumption, decrease cost and improve efficiency, thus becoming an attractive research direction. A mathematical... Induction heating of steel in continuous casting/rolling process is an important means to reduce energy consumption, decrease cost and improve efficiency, thus becoming an attractive research direction. A mathematical model with Finite Difference Method (FDM) was developed to describe the electromagnetic field and predict the temperature distribution in the steel slab for the whole induction heating process. To validate feasibility of the model, computational results were compared with the ANSYS simulation results. According to the comparing results, the temperature distributions of the slab cast under different technical parameters were investigated, which may provide useful information to optimize the parameters of technology in heating process. 展开更多
关键词 induction heating finite difference method finite element method ANSYS temperature distribution
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A General Approach for Direct Conversion of Single Phase AC to AC Converter for Induction Heating System
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作者 Dr. P. Umasankar Dr. S. Senthil Kumar 《Circuits and Systems》 2016年第11期3896-3910,共15页
This paper signifies the study of modeling and simulation of a single phase matrix converter for induction heating system. The working principle and the control method, using PID are revealing in detail. The performan... This paper signifies the study of modeling and simulation of a single phase matrix converter for induction heating system. The working principle and the control method, using PID are revealing in detail. The performance of the system is carried out in MATLAB/Simulink environment with pulse width modulation switching strategy by varying the duty cycle. PID control is employed to obtain the better performance for a specified input supply for various output frequencies. The proposed control strategy of AC to AC converter has been discussed with a wide range of operating frequencies and results in low Total Harmonic Distortion. 展开更多
关键词 Single Phase Matrix Converter PID Control induction heating Pulse Width Modulation Total Harmonic Distortion
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The rapid densification behavior of powder metallurgy Ti alloys by induction heating sintering
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作者 Kejia Pan Xiaotao Liu +3 位作者 Bao Wang Shuai Gao Shixing Wu Ning Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2024年第14期152-164,共13页
Micropores are decisive to mechanical properties and thermal deformation capabilities of powder met-allurgy(P/M)Ti alloys sintered compacts.As a result,achieving express densification is of prime im-portance and has a... Micropores are decisive to mechanical properties and thermal deformation capabilities of powder met-allurgy(P/M)Ti alloys sintered compacts.As a result,achieving express densification is of prime im-portance and has attracted increasing attention recently.Induction heating owns the merits of high effi-ciency,short process,and low cost,and thus has huge potential to be used as a sintering approach for the fabrication of P/M Ti alloys.Nevertheless,the facilitated densification behavior associated with induction heating sintering remains unclear so far.To address it,powder metallurgy Ti6Al4V is manufactured via induction heating sintering with which the underlying sintering mechanism is investigated in-depth.It is found that induction heating could generate a fully densified compact in a remarkably shortened time,demonstrating its superior sintering efficiency as compared with conventional resistance furnace heat-ing.COMSOL finite element analysis reveals that the maximum current density during induction heating can reach 10^(6)A m^(–2)though the magnetic field strength is solely 0.02 T,leading to a slight tempera-ture difference of approximately 30℃between the interior and exterior of the billet.Furthermore,the rapid heating essentially starts at sharp corners of particles due to the potent current concentration ef-fect,which facilitates the cracking of the particle surface oxide film and thus enhances the direct contact between them.Moreover,the electromigration effect caused by induction current promotes the diffusion capability of elements,giving rise to expedited densification,alloying,and chemical homogenization.This work provides not only critical insight into the sintering mechanism of induction heating sintering but also significant guidance for low-cost powder metallurgy materials preparation. 展开更多
关键词 Titanium alloy Powder metallurgy induction heating sintering Radiation heating sintering Current field SIMULATION
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Ultrafast synthesis of cobalt/carbon nanocomposites by magnetic induction heating for oxygen evolution reaction
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作者 Qiming Liu Samuel McNair +7 位作者 Forrest Nichols Bingzhang Lu Bingzhe Yu Dingjie Pan Jamie Ko Amrinder Bhuller Frank Bridges Shaowei Chen 《Advanced Sensor and Energy Materials》 2023年第1期14-23,共10页
Metal/carbon nanocomposites have shown great potential as high-performance,low-cost electrocatalysts owing largely to their unique metal-support interactions.These nanocomposites are typically prepared by conventional... Metal/carbon nanocomposites have shown great potential as high-performance,low-cost electrocatalysts owing largely to their unique metal-support interactions.These nanocomposites are typically prepared by conventional pyrolysis that is tedious and energy-intensive.Herein,we report the ultrafast preparation of cobalt/carbon nanocomposites by magnetic induction heating(MIH)of metal organic frameworks within seconds under an inert atmosphere.The resulting samples consist of cobalt nanoparticles encapsulated within defective carbon shells,and effectively catalyze oxygen evolution reaction(OER)in alkaline media.Among the series,the sample prepared at 400 A for 10 s exhibits the best OER performance,needing a low overpotential of+308 mV to reach the current density of 10 mA cm^(−2),along with excellent stability,and even outperforms commercial RuO_(2) at high overpotentials.This is ascribed to the charge transfer between the carbon scaffold and metal nanoparticles.Operando X-ray absorption spectroscopy measurements show that the electrochemically produced CoOOH species is responsible for the high electrocatalytic performance.The results highlight the unique potential of MIH in the development of effective nanocomposite catalysts for electrochemical energy technologies. 展开更多
关键词 Magnetic induction heating Electrocatalysis Oxygen evolution reaction Cobalt/carbon nanocomposite Operando X-ray spectroscopy
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