Article
Green & Sustainable Science & Technology
Xin Zhang, Jiyun Tang, Juan Chen, Zhanlong Song
Summary: In this study, the weight loss properties of waste tires (WT) were investigated using TG-MS test. WT pyrolysis under simulated coal-fired flue gas was conducted, and the transformation characteristics of sulfur (S) and zinc (Zn) during WT pyrolysis were analyzed. The results showed that the weight loss of WT occurred in three stages, and the principal sulfur-containing gas emitted was H2S. The temperature had a significant impact on the enrichment of S and Zn in the solid product, and the addition of MgO promoted the enrichment of Zn, while Fe2O3 resulted in the highest sulfur fixation. The research results can provide theoretical references for pollutant control technologies.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Yanni Xuan, Haitao Gao, Hong Tian, Zhangmao Hu, Jingjing Ma, Qingbo Yu
Summary: Ce-modified Mn3O4/diatomite sorbents with different Ce/Mn molar ratios were prepared by the sol-gel method to improve the desulfurization performance of single Mn-based sorbents. Results showed that the addition of CeO2 significantly enhanced the desulfurization activity by forming strong redox couples with Mn3O4. The designed CeO2-Mn3O4 binary oxides with a micro-reticulated framework restrained the agglomeration of active component and provided more active sites, leading to improved utilization of active component.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Xin Zhang, Jiyun Tang, Juan Chen, Zhanlong Song, Yong Dong
Summary: During the co-pyrolysis of waste tires (WT) and waste plastic (PVC), volatile ZnCl2 is produced due to the presence of ZnO in WT and Cl in PVC. The addition of PVC reduces the relative enrichment of Zn in the solid product by 42.4% at 850 degrees C. CaO and Al2O3 facilitate Zn release, while MgO and Fe2O3 have enrichment effects on Zn. The adsorption mechanisms of metal oxides to ZnCl2 were investigated using density functional theory, revealing that ZnCl2 is physisorbed by Al2O3 and chemisorbed by CaO, Fe2O3, and MgO.
Article
Energy & Fuels
John H. Jacobs, Nancy Chou, Kevin L. Lesage, Ye Xiao, Josephine M. Hill, Robert A. Marriott
Summary: Activated carbons have been found to possess good selective adsorption capability for removing sulfur dioxide from flue gas, especially in the presence of water. The activated carbons prepared with KOH and NaOH showcased the highest SO2 adsorption capacity under wet conditions. Additionally, the adsorption performance of all activated carbons remained unchanged after multicomponent adsorption of wet SO2.
Article
Chemistry, Multidisciplinary
Lawrence Koech, Raymond C. Everson, Burgert Hattingh, Hilary Rutto, Letsabisa Lerotholi, Hein W. J. P. Neomagus
Summary: This study investigated the absorption of SO2 from flue gases using three different sorbents in a spray dryer. The findings showed that trona had the highest SO2 removal efficiency of 94% at a temperature of 120℃ and a stoichiometric molar ratio of 1.5, compared to hydrated lime (82%) and limestone (76%).
Article
Environmental Sciences
Binghua Xie, Na Geng, Qian Yu, Di He, Fang Wang, Tiancheng Liu, Jiyun Gao, Ping Ning, Xin Song, Lijuan Jia
Summary: The study proposed a novel desulfurization method using blast furnace dust slurry to control SO2 emission and achieve waste control targets, with optimal conditions yielding 100% desulfurization efficiency. Response surface methodology results indicated the significant influence of oxygen concentration on SO2 removal efficiency. The potential desulfurization mechanism of blast furnace dust was proposed, providing a promising and low-cost desulfurization technology.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Kevin J. Pastoor, Andrew J. Miskowiec, Jennifer L. Niedziela, Jonathan H. Christian, Bryan J. Foley, Sara B. Isbill, Ashley E. Shields, Alicia M. Manjon-Sanz, Erik C. Nykwest, Tyler L. Spano, Matthew S. Wellons, Jenifer C. Shafer, Mark P. Jensen
Summary: This study investigated the structure of uranium tetrafluoride hydrate (UF4·2.5H2O) using time-of-flight neutron powder diffraction. The crystal structure of UF4·2.5H2O exhibits three distinct water environments, with extensive hydrogen bonding between water molecules and fluoride ligands. Thermal analysis showed that UF4·2.5H2O is thermally stable up to certain temperatures and undergoes dehydration at higher temperatures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Lili Jiang, Ke Mei, Kaihong Chen, Rina Dao, Haoran Li, Congmin Wang
Summary: An efficient method for predicting the capture of SO2 from flue gas using imidazolium ionic liquids was reported. Through quantitative calculations and design, the absorption performance of various imidazolium ionic liquids for SO2 was predicted and validated through experiments.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Engineering, Chemical
Mengxi Zhao, Changjun Zou
Summary: MgO nanofluids show better desulfurization effect in wet desulfurization process compared to MgO slurry by improving desulfurization efficiency. The density and viscosity of MgO nanofluids increase with concentration, but decrease with temperature. Properly reducing particle size can enhance the desulfurization efficiency of MgO absorbent in removing SO2 from flue gas.
Article
Engineering, Environmental
Yongpeng Ma, Dongli Yuan, Xiaojing Zhang, Zan Qu, Wenjun Huang
Summary: The study found that NO2 and O2 have impacts on the absorption capacity of SO2 during the desulfurization process with Na2SO3, while Na2S2O3 inhibits the oxidation of SO32- effectively.
ENVIRONMENTAL ENGINEERING RESEARCH
(2021)
Article
Engineering, Chemical
Zhonghui Zhang, Bolun Yang, Heping Ma
Summary: The aliphatic amine decorating strategy successfully improved the SO2 capture performance of MOF by transferring SO2 adsorption sites from Cr to N atom, enhancing SO2 absorption capacity under low SO2 partial pressure.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yuling Ma, Airong Li, Cheng Wang
Summary: Metal-organic frameworks (MOFs) are promising materials for gas adsorption and separation due to their high specific surface area, adjustable pore structure, and functionalized pore environment. By introducing different monocarboxylic acids during the synthesis, a series of defective UiO-66 samples were prepared with high specific surface area and good thermal stability. Among them, UiO-66-cyanoacetic acid showed the highest breakthrough time for SO2 in the desulfurization experiment of simulated flue gas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Ziyao Yang, Yang Xu, Xuehui Sun, Cong Nie, Mantang Chen, Qingzhu Zhang, Guangqian Luo
Summary: In this study, novel S-doped sorbents were developed for Hg0 removal from coal-fired flue gas by one-step co-pyrolysis of biomass and scrap tires under SO2 atmosphere. The presence of SO2 improved the performance of S-doped sorbents and resulted in increased sulfur content and decreased carbon content. The activated sorbents had higher specific surface area, pore volume, and micropore content compared with raw sorbents. The S-doped sorbents showed excellent performance for Hg0 removal and good water-resistance due to the presence of ZnS. O2 and NO had positive effects on Hg0 removal and the behavior of Hg0 removal over S-doped sorbents followed a pseudo-second-order model.
Article
Engineering, Environmental
Feng Shi, Jia-nan Gu, Diwen Ying, Kan Li, Naiqiang Yan, Juexiu Li, Jinping Jia
Summary: This study investigates a combined system of Na2SO3 wet absorption bipolar membrane electrodialysis for efficient absorption and regeneration of SO2 from industrial flue gas. The results show that high absorption and regeneration efficiencies can be achieved by simultaneous addition of acid and alkali, reaching 100% efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Qiang Zhou, Xin Tao, Guancheng Di, Yu Shang, Ping Lu, Guiling Xu, Mengting Liu, Yuqiu Zheng, Liang Dong
Summary: The Ce-doped Fe6Mn0.8Ce0.2Oy magnetic sorbent exhibits good SO2 tolerance and can be used for the circulating removal of mercury in high-temperature flue gas. Ce protects Mn4+ active sites from SO2 poisoning, while O-2 helps supplement oxygen vacancies in a timely manner, enhancing the sorbent's tolerance.
Article
Energy & Fuels
Lele Feng, Yuxin Wu, Kailong Xu, Hai Zhang, Yang Zhang, Man Zhang
Article
Thermodynamics
Xiehe Yang, Wenfeng Shen, Yang Zhang, Hai Zhang, Junfu Lyu, Jiansheng Zhang
COMBUSTION SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Physical
Lilin Hu, Zhu Miao, Yang Zhang, Hai Zhang, Hairui Yang
Article
Chemistry, Physical
Runxia Cai, Yiqun Huang, Yiran Li, Yuxin Wu, Hai Zhang, Man Zhang, Hairui Yang, Junfu Lyu
Review
Energy & Fuels
Weiliang Wang, Zheng Li, Junfu Lyu, Hai Zhang, Guangxi Yue, Weidou Ni
FRONTIERS IN ENERGY
(2019)
Article
Energy & Fuels
Weiliang Wang, Junfu Lyu, Hai Zhang, Qing Liu, Guangxi Yue, Weidou Ni
FRONTIERS IN ENERGY
(2020)
Article
Engineering, Aerospace
Yang Zhang, Xiehe Yang, Wenfeng Shen, Hai Zhang, Shuangfeng Wang, Junfu Lyu
MICROGRAVITY SCIENCE AND TECHNOLOGY
(2019)
Review
Energy & Fuels
Weiliang Wang, Junfu Lyu, Zheng Li, Hai Zhang, Guangxi Yue, Weidou Ni
FRONTIERS IN ENERGY
(2019)
Article
Thermodynamics
Lilin Hu, Yang Zhang, Denggao Chen, Jugang Fang, Man Zhang, Yuxin Wu, Hai Zhang, Zhenshan Li, Junfu Lyu
APPLIED THERMAL ENGINEERING
(2019)
Article
Engineering, Chemical
Hai Zhang, Xiumin Jiang, Jiaxun Liu, Jianguo Liu
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Thermodynamics
Wenfeng Shen, Yang Zhang, Xiehe Yang, Hai Zhang
Summary: The effects of blending hydrogen and ethylene are beneficial for promoting ignition, while blending methane and propylene inhibits ignition at atmospheric pressure. At elevated pressures, the effects of hydrogen, methane, and ethylene blending remain similar to those at atmospheric pressure, but the inhibiting effect of propylene weakens. The blending effects are mainly influenced by changes in chemical kinetics rather than thermophysical properties.
COMBUSTION SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
Hai Zhang, Lei Luo, Jiaxun Liu, Anyao Jiao, Jianguo Liu, Xiumin Jiang
Article
Environmental Sciences
Jun Shen, Hai Zhang, Jiaxun Liu, Lei Luo, Sha Wang, Bin Chen, Xiumin Jiang
JOURNAL OF ENVIRONMENTAL SCIENCES
(2020)
Article
Energy & Fuels
Haoshu Shen, Yuxin Wu, Minmin Zhou, Hai Zhang, Guangxi Yue, Junfu Lyu
Summary: In recent years, Large Eddy Simulation (LES) has become an important tool for studying pulverized coal combustion, capturing turbulent structures and significantly affecting boiler performance. This study demonstrates that LES effectively simulates the performance of a 660MW ultra-supercritical boiler under different load conditions, providing guidance for design and operation.
FRONTIERS IN ENERGY
(2021)
Proceedings Paper
Thermodynamics
Lele Feng, Yang Zhang, Yuxin Wu, Kailong Xu, Hai Zhang, Man Zhang, Hairui Yang
PROCEEDINGS OF THE ASME SUMMER HEAT TRANSFER CONFERENCE, 2019
(2019)