Article
Multidisciplinary Sciences
Chen Jihao, Li Juan, Li Yue, Zhang Jinjing
Summary: In this experiment, the distribution and composition of tar products resulting from pyrolysis of coal with different metal oxide supported catalysts were studied. Fe2O3/γ-Al2O3 catalyst showed the highest tar yield and improved the quality of tar.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Tai Feng, Qiwen Kong, Jiangwei Xue, Longzhi Li, Peiyi Liu, Shanchuan Li, Zhen Zhang
Summary: This study investigated the effect of rapid pyrolysis process on the SO2 adsorption capacity of powder activated coke (PAC) using fractal analysis. The results showed that the fractal dimensions were influenced by the concentrations of activation agents, with a small effect from steam and a significant promotion effect from oxygen. The relationship between fractal dimensions and coke yields followed an N-shaped curve, and the SO2 adsorption capacity showed a positive linear correlation with one of the fractal dimensions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Sumrit Mopoung, Nuchjira Dejang
Summary: Activated carbon was produced from eucalyptus wood chips through steam activation, with its properties characterized. The study revealed that the adsorption capacity of the activated carbon increased with higher activation temperatures.
SCIENTIFIC REPORTS
(2021)
Article
Energy & Fuels
Jiaxun Liu, Xinyu Zhong, Xiumin Jiang, Xue Jiang
Summary: This study investigated the free radical characteristics of coal during ultrafine grinding and solvent extraction processes, revealing that the free radical concentrations of extracts are lower than the raw coal. The impact of different reagents on free radical properties depends on their particle size and polarity, with higher polarity reagents able to extract more abundant molecular components.
Article
Engineering, Environmental
Anjun Ma, Shilin Zhao, Hui Luo, Zhiqiang Sun, Xingyu Xie, Yiren Liao, Xin Liang, Hesong Li
Summary: The research shows that the performance of mercury removal from coal-fired power plants can be enhanced through pyrolysis, mechanochemistry, and pyrolysis + mechanochemistry. The study found that the activation parameters had irregular effects on the mercury removal ability, while the final pyrolysis temperature played a crucial role in the mercury capture process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Zhenghong Zhao, Zewu Zhang, Xiaojian Zha, Ge Gao, Xiaoshan Li, Fan Wu, Cong Luo, Liqi Zhang
Summary: This study evaluates the feasibility of direct steam injection for forming an H2O-rich environment in MILD oxy combustion. The results show that inner-steam injection is better in controlling temperature rise and fluctuation, and maintaining MILD combustion. Inner-steam injection also inhibits fuel-N oxidation and enhances NO-reburning, leading to lower NO emission concentration.
Article
Energy & Fuels
Bao Liu, Qing-hai Pang, Zhi-jun He, Li-chun Yang, En-guang Xiang, Jing Xu
Summary: The explosibility of bituminous coal is related to its functional group structure, while the volatile content has a minor influence on the explosibility of pulverized coals. Aliphatic hydrocarbons are more explosive than aromatic hydrocarbons, and the reaction behavior of char is dominant during the explosion.
Article
Environmental Sciences
Wencheng Ma, Shaobo Zhang, Yiru Chen, Dan Zhong, Qinghui Du, Jinxin Li, Ru Li, Xuan Du, Jingna Zhang
Summary: In this study, lignite activated coke (LAC) was used as the carrier and Fe3O4-CuO composite metal oxide was used as the main active material to synthesize the nano-scale magnetic supported composite metal oxide Fe3O4-CuO@LAC catalyst, which effectively activates the active oxygen in peroxodisulfate (PS). The optimized experimental conditions showed a high removal rate of hydroquinone using the catalyst. The possible degradation pathway of hydroquinone was also deduced, providing a foundation for solving the problem of difficult treatment of phenol-containing wastewater in coal chemical industry.
ENVIRONMENTAL RESEARCH
(2022)
Article
Energy & Fuels
Zhenghong Zhao, Zewu Zhang, Fan Wu, Yuxiao Chen, Cong Luo, Xiaoshan Li, Ge Gao, Liqi Zhang, Chuguang Zheng
Summary: This study investigates the impact of steam addition on turbulent mixing and chemical reaction in pulverized coal MILD-oxy combustion. The results show that steam affects flame temperature, weakens internal flue gas recirculation, and transitions the combustion towards turbulent mixing control. With increasing steam concentration, chemical reactions shift towards diffusion-controlled regime.
Article
Chemistry, Multidisciplinary
Romain Lemaire, Wei Wang, Sebastien Menanteau
Summary: The devolatilization kinetics of coal, poplar wood, and biomass blends were studied using TGA and FFR. The CPD model failed to accurately simulate the results, while the global model required the use of fitted values of various parameters to obtain agreement between simulated and measured data. It was found that the activation energy for wood was lower than for coal, and blending coal with 20% wood resulted in a decrease in activation energy. Furthermore, the devolatilization times for blended samples were similar to or even lower than that of wood, suggesting the presence of synergies.
Article
Thermodynamics
Haoyang Li, Jinyuan Hao, Tianwei Zhang, Zhiming Du
Summary: Ammonium phosphate is a commonly used inhibitor for forest fires, but there are few studies on its interaction with forest fires. This study found that flame morphology is not only related to gas composition, but also to the amount and particle size of ammonium phosphate powder added. Thermodynamic analysis revealed that ammonium phosphate has a physical heat absorption role when interacting with synthetic gas flames.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Wenyu Mo, Kuan Du, Yi Sun, Minruo Guo, Chao Zhou, Mo You, Jun Xu, Long Jiang, Yi Wang, Sheng Su, Song Hu, Jun Xiang
Summary: This study conducted an analysis on direct co-firing and pyrolysis co-firing systems in a typical 600 MW coal-fired power plant in China. The performance of different biomass sources and co-firing ratios were assessed in terms of technological, environmental, and economic dimensions. The findings showed that pyrolysis co-firing had lower thermal and exergy efficiency compared to direct co-firing, with sawdust having the smallest impact on boiler efficiency. The study also discussed different feeding methods and proposed the economic feasibility of both co-firing systems.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Metallurgy & Metallurgical Engineering
Jiang-yong He, Chong Zou, Jun-xue Zhao, Dong Liang, Jia-le Xi, Cheng Ma
Summary: Through the industrialized low-temperature pyrolysis process, substantial semi-coke has been produced, which has similar carbon chemical structure and combustion reactivity to pulverized coal and coke breeze, and has the potential to be used as an alternative fuel for PCI and iron ore sintering. However, careful analysis of heat supply and demand matching is required for sintering with semi-coke as an alternative fuel.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Anne Heikkila, Mikko Iljana, Eetu-Pekka Heikkinen, Aki Koskela, Timo Fabritius
Summary: Blast furnace is the most commonly used equipment for iron production, where materials descend and form final slag as they melt. Replacing fossil-based carbon with bio-based coal has varying effects on slag composition and properties.
STEEL RESEARCH INTERNATIONAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Peng Han, Wen-long Zhan, Hao-bin Zhu, Lei Gao, Ying-chang Yu, Zhi-jun He, Jun-hong Zhang, Qing-hai Pang
Summary: Pulverized coal injection is widely used to reduce coke consumption, but adding coke breeze as a substitute can decrease combustion efficiency. The optimal addition amount of coke breeze is suggested to be within 15% based on combustion and kinetic parameters comparison.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2021)
Article
Chemistry, Applied
Donghai An, Xiang Wang, Xingxing Cheng, Lin Cui, Xiaoyang Zhang, Ping Zhou, Yong Dong
FUEL PROCESSING TECHNOLOGY
(2020)
Article
Chemistry, Analytical
Binxuan Zhou, Tao Wang, Cheng Li, Jiapeng Fu, Zhen Zhang, Zhanlong Song, Chunyuan Ma
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2020)
Article
Engineering, Environmental
Zhen Zhang, Tao Wang, Xiaohui Pan, Chunyuan Ma
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2020)
Article
Thermodynamics
Jiapeng Fu, Zhuhan Liu, Lin Wei, Leteng Lin, Na Li, Qulan Zhou, Chunyuan Ma
APPLIED THERMAL ENGINEERING
(2020)
Article
Energy & Fuels
Chaoqian Wang, Wenlong Wang, Leteng Lin, Fusen Zhang, Runing Zhang, Jing Sun, Zhanlong Song, Yanpeng Mao, Xiqiang Zhao
Article
Engineering, Chemical
Xiaohui Pan, Zhen Zhang, Lin Cui, Quanguo Zhang, Chunyuan Ma
Article
Energy & Fuels
Binxuan Zhou, Tao Wang, Tianming Xu, Cheng Li, Yuan Zhao, Jiapeng Fu, Zhen Zhang, Zhanlong Song, Chunyuan Ma
Summary: Powdered activated coke (PAC) has a high SO2 adsorption capacity when prepared under specific conditions, outperforming typical commercial activated cokes (ACs) in terms of developed pore structures, oxygen content, and SO2 adsorption capacity. By optimizing parameters using response surface methodology (RSM), PAC-OP demonstrates great potential for reducing SO2 levels in coal combustion flue gas.
FRONTIERS IN ENERGY
(2021)
Article
Energy & Fuels
Binxuan Zhou, Tao Wang, Tianming Xu, Cheng Li, Jun Li, Jiapeng Fu, Zhen Zhang, Zhanlong Song, Chunyuan Ma
Summary: This study compared the performance of PAC prepared from Shengli lignite and Jinjie bituminous coal, showing that PAC prepared from lignite had better pore structures and SO2 adsorption performance. The two-step method resulted in PAC with more developed pore structures but lower yields, while the one-step method had a simpler process with lower costs.
Article
Thermodynamics
Waqar Ahmad, Leteng Lin, Michael Strand
Summary: This study investigated the tar conversion using partial combustion technique, finding that temperature had insignificant effect on benzene conversion while an air fuel ratio of 0.3 resulted in higher conversion rates. Additionally, H-2 and CH4 had substantial inverse effects on benzene conversion.
Article
Green & Sustainable Science & Technology
Dianliang Fu, Truong Nguyen, Yanhua Lai, Leteng Lin, Zhen Dong, Mingxin Lyu
Summary: This study proposes the ESPA method by improving the SPA structure to enhance the accuracy of calculating capital cost targets, providing a new approach and method for heat exchanger network design.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Thermodynamics
Wanja Johansson, Jun Li, Leteng Lin
Summary: This study investigates the heat recovery of a wet scrubber using process data and computer simulations. The results indicate that heat recovery in wet scrubbers is a feasible way to make particle removal cost effective in medium-scale combustion facilities.
APPLIED THERMAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Zhen Zhang, Shujian Tian, Jun Liu, Peng-Yan Guo, Jie Shen
Summary: Activated biochar (ABC) was prepared by optimizing the gas production characteristics of anaerobic fermentation from typical plant/animal biochar. The physical and chemical properties of ABC (specific surface area, surface functional group, and conductivity) were found to affect the gas production characteristics of anaerobic fermentation. The pig-bone activated biochar (PABC) showed better effects on gas production characteristics compared to corn-stalk activated biochar (CABC), with earlier peak period and higher cumulative methane production. The specific surface area and conductivity were found to be important factors influencing methane production.
FERMENTATION-BASEL
(2022)
Article
Energy & Fuels
Xingxing Cheng, Peiliang Sun, Yilan Xu, Zhiqiang Wang, Meixia Wang, Chunyuan Ma
JOURNAL OF THE ENERGY INSTITUTE
(2020)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.