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学者姓名：严佐毅
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Abstract ：
Drying process is inevitable for torrefaction of nature biomass which contains considerable moisture. Drying process would retard the temperature building of biomass during superheated steam (SHS) torrefaction and hence affect the torrefaction process as well as change the properties of products. Feedstocks with different moisture contents were torrefied to develop a drying model to describe the SHS drying process and predicate the temperature of feedstock. Torrefied biomass was analyzed to get its physicochemical properties, pyrolysis behaviors, and combustion performance. It was found that torrefaction would occur during the drying process. The drying process can be roughly divided into three stages: the rapid cooling stage, the rapid heating stage, and the stable heating stage. The rapid cooling stage and rapid heating stage are dominated by drying processes, while the stable heating stage is usually accompanied by a severe torrefaction process. Wet feedstock need longer residence time to achieve equivalent physicochemical properties and pyrolysis behaviors as that of dry feedstock. The HHV of dry sample could be increased by 40.8 %, and that of wet sample also could be increased by 34.77%. However, the combustion behaviors of the products have changed after the thermal treatment. It is found that ignition and burnout temperatures of SHS torrefied biomass were greatly affected by the initial moisture content in feedstock.
Keyword ：
Combustion behaviors Combustion behaviors Drying process modeling Drying process modeling Pyrolysis behaviors Pyrolysis behaviors Superheated steam drying Superheated steam drying Superheated steam torrefaction Superheated steam torrefaction
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| GB/T 7714 | Yan, Zuoyi , Han, Peilin , Li, Huan et al. Superheated steam drying and torrefaction of wet biomass: The effect on products characteristics [J]. | FUEL , 2025 , 388 . |
| MLA | Yan, Zuoyi et al. "Superheated steam drying and torrefaction of wet biomass: The effect on products characteristics" . | FUEL 388 (2025) . |
| APA | Yan, Zuoyi , Han, Peilin , Li, Huan , Zheng, Huidong , Zhang, Dongdong . Superheated steam drying and torrefaction of wet biomass: The effect on products characteristics . | FUEL , 2025 , 388 . |
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The design of highly stable and active bifunctional catalysts for electrolytic water remains a significant challenge. In this study, self-supported CoP/CNT/Ni2P bifunctional catalysts with three-phase heterojunction nano- structures were constructed by a multi-step electrodeposition and phosphorylation strategy. X-ray diffraction analysis and transmission electron microscope showed that CoP/CNT/Ni2P was a three-phase heterojunction nanostructure, and scanning electron microscope results of CoP/CNT/Ni2P suggested the successful introduction of carbon nanotube (CNT). The X-ray photoelectron spectroscopy results indicate a shift in the elemental binding energy in CoP/CNT/Ni2P, which is believed to contribute to the electrocatalytic reaction. The incorporation of CNT enhances charge transfer within the multiphase catalyst and maximizes the exposure of catalytically active sites, achieving an increase in catalyst performance. As anticipated, the CoP/CNT/Ni2P catalyst displays high catalytic activity for both the hydrogen evolution reaction (61 mV at 10 mA cm_ 2 ) and the oxygen evolution reaction (342 mV at 100 mA cm_ 2 ), in addition to exhibiting long-term stability at a current density of 10 mA cm_ 2 over 40 h. The electrolyzer comprising CoP/CNT/Ni2P(+,_) necessitates a modest operating voltage of 1.52 V to attain 10 mA cm_ 2 during alkaline water splitting, thereby outperforming the commercial catalyst Pt/C|| IrO2 and earlier reports. This study provides guidance for the development of ultra-high activity and durability catalysts for water splitting.
Keyword ：
Bifunctional electrocatalysts Bifunctional electrocatalysts CNT CNT Hydrogen evolution reaction Hydrogen evolution reaction Overall water splitting Overall water splitting
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| GB/T 7714 | Yu, Guo , Zhao, Jiaxiang , Hou, Songjia et al. Mutual promotion of CoP/CNT/Ni2P by heterojunction structural design and intrinsic activity coupling for water splitting [J]. | FUEL , 2025 , 382 . |
| MLA | Yu, Guo et al. "Mutual promotion of CoP/CNT/Ni2P by heterojunction structural design and intrinsic activity coupling for water splitting" . | FUEL 382 (2025) . |
| APA | Yu, Guo , Zhao, Jiaxiang , Hou, Songjia , Han, Haoyang , Zhou, Qing , Yan, Zuoyi et al. Mutual promotion of CoP/CNT/Ni2P by heterojunction structural design and intrinsic activity coupling for water splitting . | FUEL , 2025 , 382 . |
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The Microscale Oscillatory Flow Reactor (MOFR) can achieve good plug flow and micromixing performance simultaneously at laminar net flow conditions. An unbaffled U-shaped microreactor coupled with oscillating flow technology was designed to study the macro and micromixing performance. Firstly, the influence of oscillations on the flow performance was studied to reveal the formation rule of vortex. The simulation results showed that the continuous formation and destruction of periodic vortexes occurred in the microreactor with oscillation. With the increase of oscillation intensity, the vortex size in the radial direction first gradually increased and then becomes stable, and gradually moved axially, resulting in axial diffusion. Secondly, the effect of oscillation on the macromixing and micromixing performance were investigated. The results showed that the coupling oscillation could greatly improve the macromixing and micromixing performance. The macromixing and micromixing performance were promoted simultaneously at lower oscillation intensity and then tended to be flat due to the axial diffusion at high oscillation intensity. When φ>6.05, the minimum micromixing time and the maximum number of tanks can be achieved at the same time. At a velocity ratio of about 23, FoM reached a maximum of about 3.5. © 2024
Keyword ：
Computational fluid dynamics Computational fluid dynamics Diffusion Diffusion Laminar flow Laminar flow Oscillating flow Oscillating flow Vortex flow Vortex flow
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| GB/T 7714 | Yu, Liping , Zheng, Meiqin , Wang, Jiawei et al. Enhanced mixing characteristics of unbaffled U-shaped microreactor coupled oscillatory flow [J]. | Chemical Engineering and Processing - Process Intensification , 2024 , 205 . |
| MLA | Yu, Liping et al. "Enhanced mixing characteristics of unbaffled U-shaped microreactor coupled oscillatory flow" . | Chemical Engineering and Processing - Process Intensification 205 (2024) . |
| APA | Yu, Liping , Zheng, Meiqin , Wang, Jiawei , Yan, Zuoyi , Yao, Wei , Li, Haohong et al. Enhanced mixing characteristics of unbaffled U-shaped microreactor coupled oscillatory flow . | Chemical Engineering and Processing - Process Intensification , 2024 , 205 . |
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For the process of CO2 absorption, existing gas-liquid contactors suffer from low mass transfer performance and low gas-liquid ratios. In this study, a rotating spiral contactor was developed to overcome these drawbacks and a novel rate-based model was developed to predict the CO2 absorption performance. The effective interfacial area (a(e)), overall volumetric mass transfer coefficient (K(G)a(e)) and CO2 absorption efficiency (eta) were investigated. The results showed that the a(e) was 913-1125 m(2)/m(3) superior to the conventional contactor. In the range of gas-liquid ratio of 200-1800, the K(G)a(e) and eta were 1.4-10.1 kmol.m(-3).h(-1).kPa(-1) and 40.5-99.6 %, respectively. The rate-based model predicted the K(G)a(e) and eta with the AARD of 6.71 % and 1.90 %, respectively. Also, it has better robustness even in highly nonlinear temperature and composition distributions. This study provides a potential contactor and a new modeling tool for CO2 capture and other gas-liquid separation.
Keyword ：
CO(2 )absorption CO(2 )absorption Effective interfacial area Effective interfacial area High gas-liquid ratio High gas-liquid ratio Mass transfer coefficient Mass transfer coefficient Rate-based model Rate-based model Spiral channel Spiral channel
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| GB/T 7714 | Chen, Tianming , Song, Jiabao , Zheng, Chenghui et al. Novel rate-based modeling and mass transfer performance of CO2 absorption in rotating spiral contactor [J]. | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER , 2024 , 235 . |
| MLA | Chen, Tianming et al. "Novel rate-based modeling and mass transfer performance of CO2 absorption in rotating spiral contactor" . | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 235 (2024) . |
| APA | Chen, Tianming , Song, Jiabao , Zheng, Chenghui , Zheng, Meiqin , Yan, Zhongyi , Yan, Zuoyi et al. Novel rate-based modeling and mass transfer performance of CO2 absorption in rotating spiral contactor . | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER , 2024 , 235 . |
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The low efficiency of growing single-walled carbon nanotubes (SWCNT) poses a barrier to their application in high-performance electronic devices. However, it is difficult to control the uniform growth of SWCNT in a floating catalytic reactor due to the complex parameter control. Therefore, it is essential to enhance the growth of SWCNT in the floating catalyst chemical vapor deposition (FCCVD) process. In the present work, the influence of the reactive flow field on the growth of SWCNT, which is often neglected, is revealed. To address this issue, this work combines experiments and simulations to obtain the characteristics of the field distribution within the reactor and the trend of the products. The results of the flow field analysis indicate that thermal buoyancy is the cause of SWCNT growth limitation in FCCVD. By weakening the thermal buoyancy, a homogeneous reaction field is obtained; vortices in the flow field are reduced or even disappear; the temperature field is more homogeneous, and, importantly, the crystallinity of SWCNT is enhanced (IG/ID up to 20-fold). In addition, the decomposition process of the carbon source is also enhanced, thus suppressing the generation of by-products. Based on the results of the small tube experiments, both the increase in temperature and the decrease in residence time increased the IG/ID. Furthermore, the distributions of the maximum and minimum diameters in SWCNT imply variations in the growth modes of SWCNT at different temperatures.
Keyword ：
Computational model simulation Computational model simulation Floating catalyst CVD Floating catalyst CVD Flow field control Flow field control Single wall carbon nanotubes Single wall carbon nanotubes Time dependency Time dependency
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| GB/T 7714 | Yu, Guo , Han, Peilin , Yi, Hongmei et al. Study of field distribution characteristics in CVD reactors and enhanced growth of SWNCT [J]. | DIAMOND AND RELATED MATERIALS , 2024 , 145 . |
| MLA | Yu, Guo et al. "Study of field distribution characteristics in CVD reactors and enhanced growth of SWNCT" . | DIAMOND AND RELATED MATERIALS 145 (2024) . |
| APA | Yu, Guo , Han, Peilin , Yi, Hongmei , Zhao, Jiaxiang , Hou, Songjia , Yan, Zuoyi et al. Study of field distribution characteristics in CVD reactors and enhanced growth of SWNCT . | DIAMOND AND RELATED MATERIALS , 2024 , 145 . |
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The efficient capture of CO2 has always been a goal pursued by people. However, low gas handling capacity and low gas-liquid ratio restricts existing gas-liquid contactors, especially for non-rotating ones. In this study, a gas-liquid contactor with high gas handling capacity and high gas-liquid ratio, the rotating spiral contactor, was developed. Hydrodynamic properties of the contactor were experimentally or theoretically investigated. A novel interface model was developed to describe gas-liquid interface shape. CO2 capture using MEA/DMEA aqueous solution were evaluated in terms of space-time yield (tau), overall volumetric mass transfer coefficient (KGae) and CO2 capture efficiency (eta). A rate -based model was developed and applied for the first time to predict CO2 capture in the rotating spiral contactor. The hydrodynamic results showed that liquid layer thickness was below 400 mu m for the liquid with viscosity of 14.5 mPa.s. Under the rotational speed of 1200 rpm, the gas-liquid ratio ranged from 525 to 2700, while the gas-liquid surface area remained around 667 m2/m3. The interface model predicted interface thickness within a relative deviation of +/- 20 %. The results also showed that tau, KGae and eta respectively were 3428-17021 h-1, 1.0-6.4 kmol.m- 3.h-1.kPa- 1 and 38-98 % at the gas-liquid ratio range of 200-1000. The predicted KGae and eta by rate -based model agreed well with the experimental data within a relative deviation of +/- 15 %. This rotating spiral contactor is ideally suitable for the scenarios with large gas handling requirement and high gas-liquid ratio.
Keyword ：
CO2 capture CO2 capture High gas-liquid ratio High gas-liquid ratio Interface model Interface model Mass transfer coefficient Mass transfer coefficient Rate-based model Rate-based model Rotating spiral contactor Rotating spiral contactor
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| GB/T 7714 | Chen, Tianming , Zheng, Meiqin , Zheng, Chenghui et al. CO2 capture in a novel rotating spiral contactor with hydraulic seal: Hydromechanics, mass transfer and modeling [J]. | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 340 . |
| MLA | Chen, Tianming et al. "CO2 capture in a novel rotating spiral contactor with hydraulic seal: Hydromechanics, mass transfer and modeling" . | SEPARATION AND PURIFICATION TECHNOLOGY 340 (2024) . |
| APA | Chen, Tianming , Zheng, Meiqin , Zheng, Chenghui , Yan, Zhongyi , Yan, Zuoyi , Zhou, Caijin et al. CO2 capture in a novel rotating spiral contactor with hydraulic seal: Hydromechanics, mass transfer and modeling . | SEPARATION AND PURIFICATION TECHNOLOGY , 2024 , 340 . |
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The Microscale Oscillatory Flow Reactor (MOFR) can achieve good plug flow and micromixing performance simultaneously at laminar net flow conditions. An unbaffled U-shaped microreactor coupled with oscillating flow technology was designed to study the macro and micromixing performance. Firstly, the influence of oscillations on the flow performance was studied to reveal the formation rule of vortex. The simulation results showed that the continuous formation and destruction of periodic vortexes occurred in the microreactor with oscillation. With the increase of oscillation intensity, the vortex size in the radial direction first gradually increased and then becomes stable, and gradually moved axially, resulting in axial diffusion. Secondly, the effect of oscillation on the macromixing and micromixing performance were investigated. The results showed that the coupling oscillation could greatly improve the macromixing and micromixing performance. The macromixing and micromixing performance were promoted simultaneously at lower oscillation intensity and then tended to be flat due to the axial diffusion at high oscillation intensity. When phi>6.05, the minimum micromixing time and the maximum number of tanks can be achieved at the same time. At a velocity ratio of about 23, FoM reached a maximum of about 3.5.
Keyword ：
CFD CFD Macromixing Macromixing Micromixing Micromixing MOFR MOFR Vortex Vortex
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| GB/T 7714 | Yu, Liping , Zheng, Meiqin , Wang, Jiawei et al. Enhanced mixing characteristics of unbaffled U-shaped microreactor coupled oscillatory flow [J]. | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION , 2024 , 205 . |
| MLA | Yu, Liping et al. "Enhanced mixing characteristics of unbaffled U-shaped microreactor coupled oscillatory flow" . | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION 205 (2024) . |
| APA | Yu, Liping , Zheng, Meiqin , Wang, Jiawei , Yan, Zuoyi , Yao, Wei , Li, Haohong et al. Enhanced mixing characteristics of unbaffled U-shaped microreactor coupled oscillatory flow . | CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION , 2024 , 205 . |
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Background: Unbaffled U-shaped mesoscale oscillatory flow reactors (meso-OFRs) are able to achieve low pressure drop, good plug flow and micromixing performance simultaneously at laminar net flow conditions under a wide "operating windows".Method: We focus on the macromixing and micromixing behaviours of unbaffled meso-OFR, where the net flow and oscillation conditions were in the wide range of Ren=17-51 and Reo=16-1350, respectively.Significant findings: The good plug flow and micromixing performance could be achieved simultaneously at low oscillation intensity with the wide "operating windows" of psi<47. It was believed that oscillatory motion led to periodic destruction and reformation of vortices, as the oscillation intensity increased, the large-scale vortices were decomposed into small-scale vortices, resulting in backmixing or axial dispersion. Meanwhile, the empirical formula of micromixing time and velocity ratio in accordance with the power-law relationship was established: tm/t = 0.00277 psi 0.51658. Finally, the oscillatory mechanism was qualitatively validated by Computational Fluid Dynamics (CFD).
Keyword ：
CFD CFD Macromixing Macromixing Meso-OFR Meso-OFR Micromixing Micromixing Vortices Vortices
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| GB/T 7714 | Zheng, Meiqin , Yao, Wei , Tian, Linda et al. Characterization of macromixing and micromixing performance of unbaffled U-shaped mesoscale oscillatory flow reactor [J]. | JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS , 2023 , 145 . |
| MLA | Zheng, Meiqin et al. "Characterization of macromixing and micromixing performance of unbaffled U-shaped mesoscale oscillatory flow reactor" . | JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS 145 (2023) . |
| APA | Zheng, Meiqin , Yao, Wei , Tian, Linda , Zhao, Suying , Zhou, Caijin , Zheng, Huidong et al. Characterization of macromixing and micromixing performance of unbaffled U-shaped mesoscale oscillatory flow reactor . | JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS , 2023 , 145 . |
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The de-oiling of concentrated phospholipids through ultrafiltration (UF) enhanced by reversed micelles using a polyethersulfone (PES) membrane was examined. Phospholipids could form reversed micellar structures with larger molecular weights in non-polar solvents, which were significantly different from oils and solvents with smaller molecular weights confirming the feasibility of membrane separation. Under the conditions of membrane retentate molecular weight of 50 kDa, transmembrane pressure difference of 0.30 MPa, inlet crossflow velocity of 2.78 x 10(-4) m.s(-1), temperature of 333.15 K, phospholipid feed concentration of 26.12 kg.m(-3)% and cycle ratio of 20:1, the retentate phospholipid content and phospholipid yield were 84.97% and 96.4%, respectively, and the permeate flux was 4.65 x 10(-6) m.s(-1). Phospholipids increased the hydrophobicity of the membrane surface and promoted concentrated phospholipid de-oiling. Finally, a mathematical model was established based on the twodimensional concentration polarization mechanism indicating that permeate flux was mainly controlled by the convective transfer flow rate.
Keyword ：
Concentrated phospholipids Concentrated phospholipids De-oiling De-oiling Mathematical model Mathematical model Reversed micelles Reversed micelles
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| GB/T 7714 | Yan, Zuoyi , Zheng, Meiqin , Ye, Daohang et al. Reversed micellar-enhanced ultrafiltration removal of oil from concentrated phospholipids [J]. | CHEMICAL ENGINEERING SCIENCE , 2023 , 277 . |
| MLA | Yan, Zuoyi et al. "Reversed micellar-enhanced ultrafiltration removal of oil from concentrated phospholipids" . | CHEMICAL ENGINEERING SCIENCE 277 (2023) . |
| APA | Yan, Zuoyi , Zheng, Meiqin , Ye, Daohang , Qi, Tian , Zhou, Caijin , Zheng, Huidong . Reversed micellar-enhanced ultrafiltration removal of oil from concentrated phospholipids . | CHEMICAL ENGINEERING SCIENCE , 2023 , 277 . |
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Unbaffled U-shaped mesoscale oscillatory flow reactors (meso-OFRs) were developed to prevent solid deposition and prepare uniform barium sulfate (BaSO4) nanoparticles with environmental protection function. The results showed that the oscillation significantly reduced granular deposition; the greater the intensity of the oscillation, the faster it reached uniformity, and the less likely the granules were to be deposited. These results can be explained by the formation of a larger vortex size, which can strengthen the turbulent mixing of fluid in the reactor, promote the interaction and forced mixing between the liquid phase and solid particles, enhance the internal shear stress of the fluid, and contribute to the secondary suspension of solid particles and the disintegration of particle agglomeration. The prepared BaSO4 nanoparticles with oscillation were smaller in size and lower in pressure drop than those produced without oscillation, which conclusively illustrated that oscillation effectively prevented channel deposition and clogging.
Keyword ：
BaSO 4 nanoparticles BaSO 4 nanoparticles Granular deposition Granular deposition Liquid -solid two-phase flow Liquid -solid two-phase flow Meso-OFR Meso-OFR Vortex Vortex
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| GB/T 7714 | Zheng, Meiqin , Liu, Jianchen , Tian, Linda et al. Unbaffled mesoscale reactor coupled oscillatory flow-enhanced liquid-solid two-phase flow [J]. | POWDER TECHNOLOGY , 2023 , 434 . |
| MLA | Zheng, Meiqin et al. "Unbaffled mesoscale reactor coupled oscillatory flow-enhanced liquid-solid two-phase flow" . | POWDER TECHNOLOGY 434 (2023) . |
| APA | Zheng, Meiqin , Liu, Jianchen , Tian, Linda , Yan, Zuoyi , Zhou, Caijin , Li, Haohong et al. Unbaffled mesoscale reactor coupled oscillatory flow-enhanced liquid-solid two-phase flow . | POWDER TECHNOLOGY , 2023 , 434 . |
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