Article
Energy & Fuels
Kening Yao, Xiao Zhang, Boxiong Shen, Qiqi Shi, Shuhao Li, Feng Shen
Summary: This study aims to design an efficient adsorbent for high-efficiency removal of elemental mercury (Hg0) from coal-fired power plant emissions. By co-implanting porous TiO2 with inorganic-organic dual functional sites (-SH and MnOx), the 2SH-MnOx/TiO2 adsorbent achieved a Hg0 removal efficiency of 90% at 175 degrees C and a high gas hourly space velocity (GHSV) of 120,000 h-1. The co-existence of -SH and MnOx was found to promote Hg0 adsorption and enhance the transfer of electrons from Hg0 to the adsorbent surface.
Article
Energy & Fuels
Wenjun Huang, Chenxi Zong, Zhisong Liu, Qinyuan Hong, Leipeng Ji, Haomiao Xu, Zan Qu, Naiqiang Yan
Summary: This paper investigates the removal of gaseous elemental mercury (Hg0) from industrial flue gas using Mn-based oxides modified SAPO-34 molecular sieve. The results show that deposition of 5% Mn on the surface of SAPO-34 enhances Hg0 removal efficiency, especially at lower temperatures. The surface MnOx particles enhance the oxidation of Hg0 and facilitate its adsorption.
Article
Energy & Fuels
Haonan Pei, Xiaokun Li, Yubao Song, Meilin Zhang, Daolei Wang, Jiang Wu, Fangjun Wang, Yi Zhang, Xinyi Zhao, Tao Jia
Summary: Research has shown that LaFeO3 has the best performance for mercury removal from flue gas, with high removal efficiency and repeatability, making it suitable for coal-fired power plants. Experimental results also indicate that the removal mechanism of LaFeO3 may be related to the change in iron valence and release of lattice oxygen.
Article
Chemistry, Multidisciplinary
Senyuan Wang, Dong Ye, Xin Liu, Haining Wang, Wei Ma, Hui Liu
Summary: A series of Mn-Cr mixed oxide adsorbents were synthesized using co-precipitation method. The effects of Mn/Cr molar ratio, reaction temperature, calcination temperature, initial mercury concentration, and flue gas constituents on mercury removal were investigated. MnCr1:3 with an optimal Mn/Cr molar ratio showed the highest efficiency (>95.4%) in a wide temperature range (100-250 degrees C) for mercury removal. The physicochemical properties and mechanism were characterized using various techniques. MnCr1:3 facilitated mercury removal due to its larger surface area, smaller crystallite sizes, higher acidity, and redox properties. Sulfur dioxide promoted elemental mercury capture for MnCr1:3. After five regeneration cycles, MnCr1:3 maintained a relative activity of 100%. The combined effect of manganese and chromium resulted in an increase in high valence metal elements and surface adsorbed oxygen, which played a vital role in mercury removal.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Energy & Fuels
Huan Liu, Zhuo Xiong, Rong Peng, Bengen Gong, Lin Chang, Jianping Yang, Yongchun Zhao, Junying Zhang
Summary: The study investigated the efficacy of CuBr2-TCS as an adsorbent for removing Hg-0 in simulated coal-fired flue gas, demonstrating high removal efficiency. The in-depth exploration of Hg-0 removal performance under different flue gas components proved that CuBr2-TCS has a good removal effect on Hg-0.
Article
Energy & Fuels
Yang Xu, Mengli Zhou, Mantang Chen, Qingzhu Zhang, Lin Du, Guangqian Luo
Summary: Natural ferruginous manganese ore (FMO) was developed as an economical NH3-SCR catalyst for simultaneous elimination of NO and elemental mercury (Hg0) from coal-fired flue gas. The chemical composition, pore structure, crystal structure and surface chemistry of FMO were characterized and the effects of various parameters on the removal efficiency of NO and Hg0 were studied. The results showed that FMO exhibited high removal efficiency for both NO and Hg0 under optimal conditions.
Article
Energy & Fuels
Rihong Xiao, Tian Gao, Xiangzheng Cui, Yushan Ji, Yili Zhang, Xing Chuai, Zhuo Xiong, Yongjin Liao, Hongbai Gu, Jianping Yang, Junying Zhang, Yongchun Zhao
Summary: CuCl2-MF is a cost-efficient and highly efficient sorbent for Hg removal from flue gas in coal-fired units, exhibiting high removal efficiency and recovery rate in large-scale coal-fired power plants. The optimal magnetosphere particle size of 45 μm-75 μm showed the highest mercury removal capacity, while CuCl2-MF also demonstrated good removal efficiency for low concentrations of mercury.
Article
Engineering, Chemical
Xiaopeng Zhang, Yuying Wei, Lianhao Zhang, Xinxin Wang, Ning Zhang, Junjiang Bao, Gaohong He
Summary: Adsorption is an efficient method for removing Hg0 from coal flue gas. In this study, Co3O4 nanotubes were embedded into GO nanosheets to prepare a composite material with good dispersion. The GO-Co3O4-1-2 sorbent showed the best O beta/OT ratio and redox capacity, providing more active sites for O2 capture and activation. The Hg0 removal efficiency of GO-Co3O4-1-2 reached 94.67% with good stability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Energy & Fuels
Zhiqiang Sun, Anjun Ma, Shilin Zhao, Hui Luo, Xingyu Xie, Yiren Liao, Xin Liang
Summary: Petroleum coke is a potential substance to replace activated carbon for mercury removal. Pyrolysis and SO2 activation can enhance the mercury removal ability of petroleum coke, especially mechanochemical modification can achieve very high mercury removal efficiency. Further studies are needed to explore the impact of different parameters on the properties of petroleum coke and the mechanisms of modification and mercury removal.
Article
Engineering, Environmental
Dong Ye, Xiaoxiang Wang, Runxian Wang, Senyuan Wang, Hui Liu, Haining Wang
Summary: This review discusses the progress in the application of MnO2-based materials for mercury removal, summarizing the fundamentals of MnO2, the properties of various adsorbents, and the effects of gas species on mercury capture capacity. The possible mercury adsorption mechanisms and regeneration methods are also explored, with a suggestion for the development of new MnO2-based adsorbents for future research.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Xue-Lei Duan, Chun-Gang Yuan, Qi Guo, Sheng-Li Niu, Kai-Qiang He, Guo-Wei Xia
Summary: A multifunctional core-shell sorbent based on halloysite nanotubes was successfully fabricated and applied for Hg-0 removal from flue gas. The unique structure and composition not only enabled easy separation and reuse, but also significantly enhanced the adsorption capacity and SO2 tolerance of the sorbent.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Engineering, Environmental
Ting Liu, Zhuo Xiong, Peng Ni, Zizhen Ma, Yan Tan, Zishun Li, Shengnan Deng, Yincui Li, Qirong Yang, Huawei Zhang
Summary: This review focuses on the current situation of Hg0 removal on different kinds of adsorbents in coal combustion flue gas, smelting flue gas, and natural gas. Hydrophobic groups, hydrophobic materials, and modification of sulfur/selenium pretreatment and metals loading can effectively overcome the problem of H2O and SO2. Additionally, separation, regeneration, and recovery aspects are explored and summarized, with thermal treatment accompanied by different components being widely adopted as an efficient approach to recover the adsorption ability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Lu Dong, Hai Wang, Yaji Huang, Hao Chen, Haoqiang Cheng, Lingqin Liu, Ligang Xu, Jianrui Zha, Mengzhu Yu, Sheng Wang, Yufeng Duan
Summary: Magnetic manganese-iron modified attapulgite sorbents were synthesized and shown to have optimal Hg-0 removal activity in coal-fired flue gas under certain conditions, which could potentially reduce costs and maximize the utilization of green energy sources.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Xiao Zhang, Kai Ren, Yuting Wang, Boxiong Shen, Feng Shen, Yewen Shang
Summary: The study synthesized biochar with incorporated Mn-Fe oxide composite through mechanochemical synthesis, showing high efficiency in purifying Hg-0 and VOC in coal-fired flue gas.
Article
Engineering, Chemical
Shilin Zhao, Kang Sun, Hui Luo, Yuchen Wang, Yanqun Zhu, Zhiqiang Sun
Summary: Optimizing the injection system significantly reduces the cost of mercury removal from coal-fired flue gas using adsorbent injection technology. Three common injection system layouts (SFP, QT, and L-S) were systematically investigated to understand their effects on adsorbent and mercury concentration, as well as mercury removal efficiency. The results showed that SFP arrangement had the best performance in terms of adsorbent coverage, average standard deviation coefficient, and mercury removal efficiency. The coupling between particle concentration and flue gas mercury concentration field is crucial for achieving high mercury removal performance.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Applied
Lidan Deng, Qiao Chen, Xingmao Jiang, Xiaowei Liu, Zheng Wang
Summary: In this study, it was found that the catalytic performance of Pt/SBA-15 can be significantly improved by introducing an appropriate amount of indium. Among all catalysts tested, 1Pt1In/SBA-15 exhibited the highest initial propane conversion rate (57.06%) and selectivity towards propylene (99.04%). The catalytic activity decreased slightly after 28 hours of reaction, but the selectivity remained high at over 99%.
Article
Materials Science, Ceramics
Lei Liu, Zijian Zhou, Xiangkun Elvis Cao, Yue Zhou, Dejun Peng, Ying Liu, Xiaowei Liu, Minghou Xu
Summary: Many dopants have been explored to improve the heat storage performance and sintering resistance of Co3O4, but the performance of these materials is not comparable due to different synthesis methods and test conditions. This study systematically compared and screened nine dopants, including four unreported ones, under the same conditions. The results showed that Cu and Zr doping had the highest re-oxidation rate, while Si and Mg doping had adverse effects on the conversion rate. Cu-doped sample exhibited higher re-oxidation rate and energy density, while Zr-doped sample exhibited more stable cyclability.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Lidan Deng, Zheng Wang, Xingmao Jiang, Jie Xu, Zijian Zhou, Xiaozhong Li, Zhixiong You, Mingyue Ding, Tetsuya Shishido, Xiaowei Liu, Minghou Xu
Summary: This study demonstrates an efficient method for the synthesis of formaldehyde from CO2 through water catalysis, achieving high conversion and yield even at room temperature and ambient pressure. HCOOH is identified as an important reaction intermediate, and the presence of surface -OH groups in LDH and the hybrid electronic state of Ru catalyst contribute to the highly efficient formation of formaldehyde.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Thermodynamics
Xin-Yuan Tang, Wei-Wei Yang, Xu Ma, Xiangkun Elvis Cao
Summary: This study proposes an integrated membrane reactor modeling method based on thermodynamic equilibrium to investigate the enhancement potential of membrane reactors. The modeling method applies MATLAB codes to calculate local reaction equilibrium and determine product separation. Through parametric analysis and optimization by GA and NSGA-II, it is found that pressure-driven hydrogen recovery enhancement is the key to improving membrane reactor performance. The results provide reference conditions for theoretical reactor design.
Article
Chemistry, Physical
Yong-Jian Yang, Wei-Wei Yang, Xu Ma, Xin-Yuan Tang, Xiangkun Elvis Cao
Summary: In order to counteract the effects of solar radiation fluctuation, phase change material (PCM) was employed in the solar volumetric reactor. A new design, SVR2, was proposed to address issues of high temperature, slow charging-discharging rate, and fluctuating methane conversion. Simulation results showed that SVR2 achieved a lower maximum temperature and higher methane conversion rate compared to the conventional SVR1 under natural solar radiation fluctuation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Mechanics
Zheming Tong, Zhongqin Yang, Shuiguang Tong, Zekui Shu, Xiangkun Elvis Cao
Summary: An enstrophy dissipation-based hybrid optimization (EDHO) approach, combining the advantages of sparrow search algorithm and Non-dominated Sorting Genetic Algorithm III (NSGA-III), was proposed to enlarge the Preferred Operating Range (POR) of a slanted axial flow pump (SAFP). The overall hydraulic performance was optimized with a special focus on energy loss mechanism. The results showed that eddy dissipation contributed the most energy loss under partial loads, while shear dissipation also played a significant role under overload conditions.
Article
Engineering, Chemical
Ruichang Xu, Jian Sun, Xiaoyu Zhang, Long Jiang, Zijian Zhou, Liang Zhu, Jiatao Zhu, Xianliang Tong, Chuanwen Zhao
Summary: The combined method of impregnated layer solution combustion and graphite-moulding is promising for producing highly efficient CaO-based CO2 sorbent pellets. It was found that using cigarette butt as a reactive skeleton can improve the resistance to sintering and elutriation, and the incorporation of Al-based stabilizer can enhance the cyclic stability of the sorbent. Therefore, this combined method provides a new solution for calcium-based CO2 capture technology.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Keke Li, Jian Sun, Yuxuan Zhang, Xiaoyu Zhang, Lei Liu, Xianliang Tong, Long Jiang, Zijian Zhou, Chuanwen Zhao
Summary: Calcium looping (CaL) is a promising CO2 capture technology, but the combustion of coal in O2/CO2 atmosphere can degrade CaO-based sorbents. A solar-driven CaL system is proposed to solve this issue.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yue Zhou, Zijian Zhou, Jian Sun, Lei Liu, Fei Luo, Guorong Xu, Xiangkun Elvis Cao, Minghou Xu
Summary: This study examines the thermochemical energy storage properties of Sr3Fe2O7-delta and SrFeO3-delta, and finds that Sr3Fe2O7-delta exhibits higher reduction reaction and absorption performance, making it a better candidate for energy storage.
Article
Chemistry, Applied
Jianbin Luo, Xinbo Zhu, Hanpeng Wu, Zijian Zhou, Geng Chen, Guohua Yang
Summary: The oxidation of soot particles over M-V/ZSM-5 catalysts (M=Mn, Co and Fe) was investigated in a cylindrical DBD plasma reactor. Soot particles were completely eliminated after 60 minutes of reaction in the plasma reactor. Mn-V/ZSM-5 catalyst exhibited higher catalytic activity towards soot particles compared to the Co-V/ZSM-5, Fe-V/ZSM-5, and VOx/ZSM-5 catalysts in the plasma reactor. However, the CO2 selectivity showed an opposite trend to the soot oxidation rate.
Article
Energy & Fuels
Zijian Zhou, Lei Liu, Qi Guo, Xinbo Zhu, Xiaowei Liu, Minghou Xu
Summary: Co-based oxides are promising for thermochemical energy storage due to their long-term stability. This study investigates the influence of Zr doping on the charging rate of Co-based oxides and explores the mechanism behind the enhancement effects.
Article
Chemistry, Applied
Jie Xu, Xiaowei Liu, Rui Li, Boxiong Shen, Zijian Zhou, Lidan Deng, Lei Liu, Xinbo Zhu
Summary: Converting CO2 into renewable fuel via photocatalysis is important for addressing the energy crisis and climate change. A p-n heterojunction between Cr doped MgAl-LDH and Co3O4 was constructed for visible-light-driven fuel production. The optimal Co3O4/LDH heterojunction exhibited high CO evolution rate and selectivity, facilitated by enhanced light absorption and reverse migration of electrons and holes. This study investigates and verifies the designed type-II heterojunction based on MgAl-LDH, providing guidance for the design of heterojunction catalysts and promoting practical application in the photocatalytic field.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Mechanics
Zheming Tong, Jiage Xin, Jiaying Song, Xiangkun Elvis Cao
Summary: In this study, a GPU-accelerated deep neural network-based flow field prediction method is proposed, which achieves good experimental results in turbomachinery and shows better capability in capturing vortex structure details.
Review
Thermodynamics
Chang Wen, Tianyu Liu, Dapeng Wang, Yaqin Wang, Hanping Chen, Guangqian Luo, Zijian Zhou, Changkang Li, Minghou Xu
Summary: The combustion of fossil fuels in human industrial activities results in the emission of pollutants. Using novel solid sorbents, such as biochar, can effectively capture gaseous pollutants. Various activation and modification methods can optimize the sorbents' properties and enhance their adsorption performance. However, further research is needed to fully understand the adsorption mechanisms, explore industrial applications, and evaluate the economic feasibility and energy-saving potential.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
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.