Article
Construction & Building Technology
Shenghua Yin, Yongqiang Hou, Xin Chen, Minzhe Zhang
Summary: The study found that the sulfur content and fiber content have a significant impact on the flow performance and mechanical properties of CSTB, and different improvement measures can be taken to enhance its mechanical performance.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Analytical
Xianzhong Cao, Jingchong Yan, Zhicai Wang, Zhiping Lei, Shibiao Ren, Shigang Kang, Zhanku Li, Hengfu Shui
Summary: This study investigates the effects of different solvents on Xilinguole lignite and coking coal through thermal dissolutions, and evaluates the feasibility of using the soluble fractions for coke-making. The results show that methanol significantly enhances the yield of soluble fractions for Xilinguole lignite and can effectively substitute fat coal to improve the quality of coke.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Materials Science, Multidisciplinary
Asmaa A. El-Tawil, Bo Bjorkman, Maria Lundgren, Astrid Robles, Lena Sundqvist Okvist
Summary: Replacing a portion of coking coal with bio-coal can reduce fossil CO2 emissions from blast furnaces, while also lowering the plasticity of coking coal with the addition of bio-coal.
Article
Chemistry, Medicinal
Karthik Salish, R. P. Kingsly Ambrose
Summary: The study focuses on the caking propensity of isomalt under different temperature, relative humidity, and consolidation pressures. It was found that an increase in temperature and consolidation pressure led to an increase in tensile strength, while an increase in relative humidity also contributed to the increase in tensile strength. The model developed in this study showed good agreement with the measurements and can be used to analyze the influence of extrinsic parameters on caking during the storage of bulk solids.
JOURNAL OF PHARMACEUTICAL SCIENCES
(2023)
Article
Energy & Fuels
Aditya Wibawa, U. P. M. Ashik, Shinji Kudo, Shusaku Asano, Xiangpeng Gao, Jun-ichiro Hayashi
Summary: In this study, the production of high-strength coke from torrefied softwood and noncaking coal was investigated. The sequential processes of pulverization, mixing, binderless hot briquetting, and carbonization were used. The resulting coke exhibited a tensile strength of 5-17 MPa, which was equal to or higher than that of conventional coke. The mixing of torrefied softwood and coal hindered the densification of coke, but positive synergy occurred at high fractions of torrefied softwood, resulting in enhanced coke strength. Fine pulverization of the mixed materials further increased the coke strength.
Article
Agricultural Engineering
Zhiming Zhang, Jiantao Yang, Limei Li, Jianqiang Qian, Yong Zhao, Tengfei Wang
Summary: The addition of persulfate during hydrothermal processing of spirulina can increase the N/O atomic ratio and NH4+-N concentration, facilitating organic nitrogen degradation and protein deamination, while forming more stable nitrogen forms.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Shujun Zhu, Jianguo Zhu, Qinggang Lyu, Chengbo Man, Ziqu Ouyang, Jingzhang Liu, Hongliang Ding, Yuhua Liu, Xiaoyu Zhang
Summary: This study achieved stable high-efficiency and low-NOx combustion of weakly caking coal by preheating fuel in a PCFB. High preheating temperature and fluidizing gas velocity helped alleviate or resolve preheating instability, while arranging combustion air position effectively reduced NO emissions. The findings highlight the potential of preheating combustion technology for improving combustion performance and reducing emissions.
Article
Construction & Building Technology
Danying Gao, Zhudi Cao, Lin Yang, Xin Yang, Guowen Sun, Ying Li, Yu Zhang, Yunsheng Zhang
Summary: The performance of steel fiber reinforced concrete (SFRC) under chloride attack was investigated. SFRC specimens were prepared using 9 wt% NaCl solution and exposed to high humidity environment (& GE;90 % RH), while considering carbonation. The evolution of mechanical properties of SFRC after 14 months of chloride attack was monitored, showing no deterioration in the properties but some corrosion spots on the concrete surface. The carbonation accelerated chloride-induced corrosion of steel fibers but did not affect the mechanical properties of SFRC within 14 months of chloride attack.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Energy & Fuels
Yuxing Jia, Zongqing Bai, Xin Dai, Ranran Hou, Zhihao Feng, Yujie Hou, Zhenxing Guo, Lingxue Kong, Jin Bai, Wen Li
Summary: The uneven spatial distribution of sulfur forms in coke during the coke making process has significant implications for sulfur transformation and desulfurization efficiency. This study used sulfur K-edge X-ray absorption near edge structure (XANES) spectroscopy to investigate the spatial distribution and conversion of different sulfur forms during high temperature coking, specifically focusing on Yanjiahe (YJH) coal with high sulfur content. The results reveal that the migration of volatile matters plays a crucial role in the desulfurization rate of the coke, and different sulfur forms exhibit different migration pathways within the coke.
Article
Metallurgy & Metallurgical Engineering
Naoto Tsubouchi, Yuuki Mochizuki, Yuting Wang, Saori Konno, Takahiro Shishido
Summary: We studied the pressurized carbonization conditions for producing high-strength coke at low temperature. The results showed that increasing the rapid heating temperature range, heating rate, and pressure can all enhance the strength of the coke.
ISIJ INTERNATIONAL
(2023)
Article
Thermodynamics
G. V. Kuznetsov, S. V. Syrodoy, V. V. Salomatov, D. Y. Malyshev, Z. A. Kostoreva, M. V. Purin, S. A. Yankovsky
Summary: The article presents experimental and theoretical studies on the combustion processes of coal-water suspensions prepared from pre-torrefied coals. The results show that the preliminary torrefaction of coal can significantly improve the environmental performance of coal-water fuel combustion, and a mathematical model of the ignition delay time of coal-water fuel is established.
COMBUSTION AND FLAME
(2022)
Article
Chemistry, Analytical
Zhihui Chen, Youqing Wu, Sheng Huang, Shiyong Wu, Jinsheng Gao
Summary: Results of the study showed that when the percentage of high caking property coal was inadequate (< 60%), higher LGR values led to larger coke strength. On the other hand, when the percentage of high caking property coal exceeded 60%, maintaining an LGR over 37 mm could ensure coke strength. Polynomial fitting revealed that the optimal LGR for coal blends was 37 mm, with a rational range of 33 to 40 mm.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Multidisciplinary
Silu Huo, Peng Zhang, Mingming He, Wei Zhang, Bolong Liang, Mingtao Zhang, Hao Wang, Kexun Li
Summary: A sustainable method was developed to produce highly accessible defect-rich carbon nanosheets, overcoming traditional issues of environmental pollution and energy consumption. The resulting carbon materials with ultrathin layered and hierarchically porous structures effectively improve ion storage performance, demonstrating excellent performance for capacitive deionization technology.
Article
Green & Sustainable Science & Technology
Feng Luo, Yujie Jin
Summary: This study compares the performance of coal-based fly ash and coal gasification fly ash as supplementary cementitious materials. The results show that although coal gasification fly ash has a greater negative effect on the fluidity of cement mortar, it has a greater contribution to the strength. Additionally, ultrafine treatment of coal gasification fly ash can improve its reactivity and reduce the negative effect on fluidity.
Article
Chemistry, Physical
Dawon Jang, Min Eui Lee, Jiwon Choi, Se Youn Cho, Sungho Lee
Summary: Carbon fibers (CFs) are considered as next-generation materials due to their superior mechanical properties, but commercially available CFs have lower tensile strength than theoretically possible due to defects and structural issues. Research is focused on parameters related to tensile properties and optimizing processes for increasing the tensile strength of PAN-based CFs.
Article
Energy & Fuels
Yuuki Mochizuki, Yohei Ono, Naoto Tsubouchi
Article
Metallurgy & Metallurgical Engineering
Toshimasa Takanohashi, Atul Sharma, Naoto Sakimo, Sadayoshi Aizawa, Daisuke Anraku, Yoji Yamauchi
ISIJ INTERNATIONAL
(2019)
Article
Metallurgy & Metallurgical Engineering
Naoto Tsubouchi, Ryo Naganuma, Yuuki Mochizuki, Hideyuki Hayashizaki, Takahiro Shishido, Atul Sharma
ISIJ INTERNATIONAL
(2019)
Article
Metallurgy & Metallurgical Engineering
Naoto Tsubouchi, Ryo Naganuma, Yuuki Mochizuki, Hideyuki Hayashizaki, Takahiro Shishido
ISIJ INTERNATIONAL
(2019)
Article
Metallurgy & Metallurgical Engineering
Naoto Tsubouchi, Ryo Naganuma, Yuuki Mochizuki, Hideyuki Hayashizaki, Takahiro Shishido
ISIJ INTERNATIONAL
(2019)
Article
Chemistry, Applied
Yuuki Mochizuki, Naoto Tsubouchi
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Yuuki Mochizuki, Naoto Tsubouchi
Article
Energy & Fuels
Eri Fumoto, Shinya Sato, Toshimasa Takanohashi
Article
Chemistry, Multidisciplinary
Yuji Shinohara, Naoto Tsubouchi
Article
Engineering, Chemical
Naoto Tsubouchi, Natsumi Matsuoka, Ken Fukuyama, Yuuki Mochizuki
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2020)
Article
Chemistry, Physical
Yuji Shinohara, Naoto Tsubouchi
JOURNAL OF MOLECULAR STRUCTURE
(2020)
Article
Chemistry, Applied
Yuuki Mochizuki, Jun Ma, Yukihiro Kubota, Kazuya Uebo, Naoto Tsubouchi
FUEL PROCESSING TECHNOLOGY
(2020)
Article
Engineering, Environmental
Yuuki Mochizuki, Naoto Tsubouchi, Katsuyasu Sugawara
RESOURCES CONSERVATION AND RECYCLING
(2020)
Article
Metallurgy & Metallurgical Engineering
Yuki Hata, Hideyuki Hayashizaki, Toshimasa Takanohashi, Takafumi Takahashi, Koji Kanehashi, Koyo Norinaga
Summary: This study constructed chemical structure models for two types of bituminous coals, A and B, and identified significant differences between them. It was found that the high pyridine-insoluble fraction extracted rate and the cluster size in the magic solvent-insoluble fraction could impact the properties of the coals.
ISIJ INTERNATIONAL
(2022)
Meeting Abstract
Chemistry, Multidisciplinary
Naoto Tsubouchi, Javzandolgor Bud, Yuuki Mochizuki
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)