Article
Thermodynamics
Shiwen Fang, Zhengbing Deng, Yan Lin, Zhen Huang, Lixing Ding, Lisheng Deng, Hongyu Huang
Summary: This study explores the nitrogen migration law and control methods of nitrogen pollutants in the process of chemical looping gasification, providing important references for reducing nitrogen emissions.
Article
Thermodynamics
Shiwen Fang, Zhengbing Deng, Yan Lin, Zhen Huang, Lixing Ding, Lisheng Deng, Hongyu Huang
Summary: In this study, copper slag modified by NiO was used as an oxygen carrier to convert sewage sludge into syngas in chemical looping gasification. The research investigated the changes of nitrogen species in gas, tar, and char under different conditions, and found that promoting the oxidation of nitrogen compounds can be achieved by increasing oxygen equivalent coefficient, steam content, and cycle number.
Article
Engineering, Chemical
Nanhang Dong, Ruiqiang Huo, Ming Liu, Lisheng Deng, Zhengbing Deng, Guozhang Chang, Zhen Huang, Hongyu Huang
Summary: The NiO modification can significantly enhance the reactivity of copper slag, contributing to improved sludge conversion, especially for sludge char conversion.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Zhiyuan Zhang, Xutao Wang, Lilin Zhang, Hengtao Zhou, Rui Ju, Peijun Rao, Xiaoyu Guo, Yaqian Han, Hongwei Chen
Summary: A comprehensive study was conducted to evaluate the characteristics of BOFS and EAFS as oxygen carriers for the CLG of SS. BOFS demonstrated higher surface roughness, wear resistance, and oxygen transport capacity compared to EAFS. The parameters showed complex trends with increasing mass ratio. The highest carbon conversion rate and cold gas efficiency were observed when the steam flow rate was 0.15 g/min for both BOFS and EAFS as oxygen carriers. BOFS exhibited faster cyclic reactivity decline but higher combustible component content.
Article
Energy & Fuels
Huan Zhou, Guoqiang Wei, Qun Yi, Zheming Zhang, Yingjie Zhao, Yuke Zhang, Zhen Huang, Anqing Zheng, Kun Zhao, Zengli Zhao
Summary: Chemical looping gasification (CLG) of Yunnan lignite with Fe-Mn mixed oxygen carriers (OCs) was conducted to produce high-purity synthesis gas and reduce pollutant emissions. The Fe-Mn composite OCs exhibited oxygen decoupling characteristics and synergistic effects between active components, making them suitable for the gasification process.
Article
Engineering, Environmental
Xiaoxu Fu, Wei Ping Chan, Vernette Chin, Yinn Zhao Boon, Wenqian Chen, Ya Zhao, Stephan Heberlein, Yan Gu, James Oh, Grzegorz Lisak
Summary: A high-temperature slagging gasifier was used to co-treat sludge-based waste materials with municipal solid waste (MSW), resulting in successful co-gasification and recovery of reusable slag and recyclable metals. The stable operation of the gasifier was achieved through proper control of temperature profiles, melting of inorganic residues, smooth discharge of molten slag, and effective flue gas emissions control. The waste-derived slag was found to be environmentally safe and showed potential as sustainable construction materials, as indicated by toxicity tests and life cycle assessment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Zongliang Zuo, Tian Jing, Jinmeng Wang, Xinjiang Dong, Yishan Chen, Siyi Luo, Weiwei Zhang
Summary: This study proposes a granulation and waste heat recovery system using the sewage sludge gasification reaction. The addition of metallurgical slag can improve the efficiency of the sludge gasification reaction. The main catalytic components in copper slag and nickel slag were determined to be Fe3O4 and CaO, respectively. After oxidative modification, the catalytic function was enhanced for copper slag, whereas it was weakened for nickel slag.
Article
Green & Sustainable Science & Technology
Aixia Chen, Zheng Tian, Rong Han, Xiao Wei, Ruirui Hu, Yang Chen
Summary: The study demonstrates that loading Ni-based catalyst onto steel slag using impregnation method can improve the efficiency of hydrogen production during sludge steam gasification. However, excessive steam flowrate and loading rate of Ni-based catalyst can lead to a decrease in gas production. The impregnation method effectively disperses active sites and enhances catalytic activity.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Engineering, Environmental
Yonghao Wang, Ming Liu, Nanhang Dong, Yan Lin, Guozhang Chang, Guoqiang Wei, Kun Zhao, Xiaobo Wang, Anqing Zheng, Zengli Zhao, Zhen Huang, Yitian Fang, Haibin Li
Summary: This study successfully achieved chemical looping gasification of high nitrogen wood waste using a modified copper slag as the oxygen carrier, effectively converting waste and reducing nitrogen pollutant emissions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Daniel Harry Schwitalla, Stefan Guhl, Justyna Koerner, Marcel Laabs, Jin Bai, Bernd Meyer
Summary: Investigations on the viscosity behavior of gasification slags with respect to P2O5 are limited. A meta study was conducted to compile relevant knowledge on how P2O5 affects the viscosity of melt compositions similar to gasification slags. It was found that a viscosity anomaly in P2O5-bearing slags is caused by a miscibility gap at a certain temperature, which can be well predicted and explained through experiments and modeling.
Article
Engineering, Environmental
Jing Han, Rui Shan, Jing Gu, Haoran Yuan, Yong Chen
Summary: Nickel-containing electroplating sludge (NiES) and dyeing sludge (DS) were used to prepare oxygen carriers (OCs) for chemical looping gasification (CLG) of DS. The crystal and pore structures of the prepared OCs were investigated, and their elemental composition and reactivity were analyzed. The addition of the two OCs significantly promoted the gas yield of DS while accelerating the gasification process. A high carbon conversion rate and acceptable gas yield could be achieved at a temperature of 850 degrees C. Furthermore, a new harmless method for the recycling treatment of NiES was provided.
Article
Energy & Fuels
Jinlong Xie, Kang Zhu, Zhen Zhang, Xinfei Chen, Yan Lin, Jianjun Hu, Ya Xiong, Yongqi Zhang, Zhen Huang, Hongyu Huang
Summary: Chemical looping gasification (CLG) technology using NiO-modified hematite as an oxygen carrier enhances the conversion of wood waste into high-quality syngas. The optimal O/W ratio is found to be 1, with a maximum valid gas yield of 0.69 m(3)/kg. Higher reaction temperatures and appropriate steam amount also improve the conversion of wood waste and syngas quality. The reactivity of the NiO-modified hematite remains stable during 20 cycles.
Article
Energy & Fuels
Ming Yang, Da Song, Yang Li, Jinzeng Cao, Guoqiang Wei, Fang He
Summary: This study investigated the chemical looping gasification (CLG) of bituminite using NiFe2O4 oxygen carrier. The changes in the phase of the oxygen carrier during the reaction and the reaction mechanism were explored. The results showed that elevated temperature and adding steam facilitated the gasification reaction, and adding ZrO2 and alkali metal enhanced the performance of the oxygen carrier. The optimized reaction conditions yielded a carbon conversion rate of 95% and a syngas selectivity of 86%. After 20 redox cycles, the carbon conversion rate remained at around 90% and the syngas selectivity was stably maintained above 80%.
Article
Energy & Fuels
Fanrui Meng, Jianshe Li, Xianchun Li, Huanran Wang, Yuejun Liu
Summary: The characteristics of chemical looping hydrogen generation using sewage sludge and corncob as fuel were investigated. The reduction depth and catalytic reaction mechanism of CuO-Fe2O3 oxygen carrier were analyzed. The adsorption properties of C molecules on CuFe2O4 surface were simulated using DFT.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Applied
Oscar Condori, Francisco Garcia-Labiano, Luis F. de Diego, Maria T. Izquierdo, Alberto Abad, Juan Adanez
Summary: Biomass Chemical Looping Gasification using LD slag as an oxygen carrier can produce high quality syngas from various types of biomass under autothermal conditions, without agglomeration issues.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Energy & Fuels
Siqi Liu, Fang He, Kun Zhao, Haibo Zhao, Zhen Huang, Guoqiang Wei, Wen Yang
Summary: Coal chemical looping gasification (CCLG) is a promising technology with high resource utilization rate and environmental protection properties, requiring suitable oxygen carriers and optimized operating conditions for coal conversion and H2&CO production. This study tested a Cu-Fe bi-ore oxygen carrier and found that the optimal gasification conditions were at 950 degrees C with a oxygen carrier-to-coal mass ratio of 3:1 and steam rate of 0.08 ml/min, achieving a syngas yield of 58 mmol/g, 75.2% syngas selectivity, and 85.3% carbon conversion.
Article
Engineering, Electrical & Electronic
Zhen Huang, Mi Tang, Dmitry Golovanov, Tao Yang, Scott Herring, Pericle Zanchetta, Christopher Gerada
Summary: This article introduces a new indicator FWTH to analyze the variations in eddy current losses in high-speed permanent magnet machines, and its application in plug-in hybrid electric vehicles is validated.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Chemistry, Applied
Yan Lin, Yuanrui Mo, Shiwen Fang, Zhen Huang, Guoqiang Wei, Zengli Zhao, Hongyu Huang
Summary: Chemical looping combustion (CLC) is a promising technology for sewage sludge disposal. This study investigates the emissions of NOx and its precursors during the pyrolysis and CLC processes, and examines the effects of temperature, ash accumulation, and reaction intermediates. The presence of CO2 and H2O enhances the oxidizability and promotes the formation of NOx. The results provide insights into the formation mechanisms of NOx in the CLC of sewage sludge and the removal efficiencies of NH3, HCN, and total N-containing pollutants.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Xiaoyu Yan, Shuheng Zhao, Jiatao Dang, Jianjun Hu, Panbo Yang, Zhen Huang, Wei Wang
Summary: In this study, phosphorus enrichment in sludge char was successfully induced by combining oxygen carrier gasification technology and microwave heating. The AOC prepared using a SiC particle size of 36 mesh and 10% iron loading achieved a phosphorus enrichment of 91.30% at a temperature of 600 degrees C. Additionally, AOC effectively increased the rate and depth of sludge gasification reaction.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Tao Jin, Hongtao Wang, Jiebang Peng, Yushan Wu, Zhen Huang, Xin Tian, Mingyue Ding
Summary: This study investigated the feasibility of using metal-modified HZSM-5 zeolite as catalysts for monocyclic aromatic hydrocarbons production in lignin catalytic pyrolysis. The 1%Co-HZ catalyst showed excellent performance and resistance to carbon deposition.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Cheng Wang, Tao Yang, Habibu Hussaini, Zhen Huang, Serhiy Bozhko
Summary: This article proposes a harmonic suppression scheme using a dc-dc converter as an active harmonic injector in a hybrid power generation center to cancel voltage harmonics on the HVdc bus. By developing simplified mathematical models and an active power sharing scheme, the magnitudes of targeted harmonics in the converters can be controlled to achieve harmonic cancellation. A closed-loop control scheme has been developed without additional hardware costs, demonstrating over 90% reduction of a specific harmonic component on the HVdc bus within the power generation center.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Xiaoyu Lang, Tao Yang, Zhen Huang, Cheng Wang, Zhenyu Wang, Serhiy Bozhko, Patrick Wheeler
Summary: This article introduces an advanced power generation center (APGC) that incorporates an extra back-to-back (BTB) converter to improve the stability for both engine and HVdc grid. The BTB converter connects the HP power generation channel and the LP channel, providing an additional power flow path between the two channels. Analytical findings of HVdc grid stability and stability improvement using the APGC architecture have been verified through simulation and experimental results.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Review
Engineering, Electrical & Electronic
Zhen Huang, Tao Yang, Paolo Giangrande, Michael Galea, Patrick Wheeler
Summary: This article provides a comprehensive overview of different structures based on dual inverters and evaluates their performance in MEA applications. The key features of adopting dual inverter topologies are explicitly demonstrated, and a practical guideline for choosing suitable dual inverters for different MEA applications is provided.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Energy & Fuels
Luwen Wang, Yan Lin, Zhen Huang, Kuo Zeng, Hongyu Huang
Summary: In this study, Zr0.5Ce0.5O2 was used to enhance the reactivity of Ca2Fe2O5 oxygen carriers and alleviate sintering issues. The addition of Zr0.5Ce0.5O2 led to improved carbon monoxide yield and cyclic performance of the modified oxygen carriers.
Article
Engineering, Electrical & Electronic
Yuan Gao, Charles Lausseme, Zhen Huang, Tao Yang
Summary: The increasing demand for passenger air travel has led to an unprecedented growth in the aircraft market. However, this growth also raises serious environmental concerns. In order to address this issue, the 2021 United Nations Climate Change Conference (COP26) has set a clear goal of achieving global net-zero emissions by midcentury while limiting temperature rise to 1.5 degrees Celsius. Hydrogen (H-2) propulsion technology is considered one of the most promising solutions to meet these targets and decarbonize the aviation industry. This article reviews the latest research on H-2-electric hybrid aircraft and discusses the potential benefits and challenges of using hydrogen fuel cells in airplanes.
IEEE ELECTRIFICATION MAGAZINE
(2022)
Article
Chemistry, Applied
Ju Huang, Kun Zhao, Shican Jiang, Shunshun Kang, Yan Lin, Zhen Huang, Anqing Zheng, Zengli Zhao
Summary: A novel composite oxide carrier doped by hetematoms was developed for the selective and stable production of C-2(+) hydrocarbons from methane in chemical looping oxidative coupling. Doping with Na improved the surface O- and Mn2+/Mn3+ species content, leading to higher C-2(+) selectivity and yield. Co-doping with W stabilized surface Na species, resulting in stable performance.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zhen Huang, Yonghao Wang, Nanhang Dong, Da Song, Yan Lin, Lisheng Deng, Hongyu Huang
Summary: Tar removal is a crucial issue in biomass gasification, and chemical looping gasification technology shows advantages in low tar generation. Hematite OC exhibits good catalytic and oxidative performance in benzene cracking. Prolonged residence time enhances benzene removal, while the addition of water vapor inhibits benzene conversion.
Article
Engineering, Electrical & Electronic
Xiaoyu Lang, Tao Yang, Zhen Huang, Zhenyu Wang, Serhiy Bozhko, Patrick Wheeler
Summary: This article presents an instantaneous power control technique for regulating the power flow of a back-to-back converter in an advanced power generation center for more-electric aircraft applications. Compared with the previously proposed method, the IPC method allows independent control of active and reactive power transfer, improves dynamic response in power control, and eliminates tedious tuning of control parameters.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Automation & Control Systems
Feng Guo, Tao Yang, Ahmed M. Diab, Zhen Huang, Seang Shen Yeoh, Serhiy Bozhko, Patrick Wheeler
Summary: In this article, a hybrid active modulation approach is proposed to tackle the challenges faced by conventional pulsewidth modulation (PWM) strategies in the aircraft electric starter/generator system. The proposed approach includes coordinate-based PWM for startup process and enhanced carrier-based virtual-space-vector modulation technique for generation mode. Bias-offset injection in the time and voltage domain is used to maintain balanced capacitor voltages. Simulation and experimental results obtained from a test rig validate the effectiveness of the presented algorithm.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Review
Energy & Fuels
Zhen Huang, Xuechun Xiao, Yuan Gao, Yonghong Xia, Tomislav Dragicevic, Pat Wheeler
Summary: The global objective of achieving net-zero emissions drives a significant electrified trend by replacing fuel-mechanical systems with onboard microgrid (OBMG) systems for transportation applications. Energy management strategies (EMS) for OBMG systems require complicated optimization algorithms and high computation capabilities, while traditional control techniques may not meet these requirements. This article provides a comprehensive overview of both information technology, particularly elucidating the role of DT technology, and evaluates and analyzes emerging information technologies.
