Article
Energy & Fuels
Pengcheng Wang, Ge Pu, Qiwen Liu, Weicheng Xiong
Summary: In this study, iron-nickel oxygen carriers were prepared and utilized in chemical looping gasification experiments to produce hydrogen-rich synthesis gas. The experimental results demonstrated that by adjusting the carrier composition and loading ratio under specific reaction conditions, the volume fraction of hydrogen in the syngas and gasification efficiency could be enhanced.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
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
Thermodynamics
Min Li, Laizhi Sun, Lei Chen, Hongqing Feng, Baofeng Zhao, Shuangxia Yang, Xinping Xie, Xiaodong Zhang
Summary: The combination of Fe2O3 and CaO as oxygen carriers showed the best activity for chemical looping gasification of biomass. The maximum syngas yield was achieved at a sawdust:Fe2O3:CaO mass ratio of 2:2:1 and a reaction temperature of 850 degrees C. Fe2O3 provided oxygen for gasification, while CaO absorbed CO2 and catalyzed reactions, showing good cycling characteristics.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Environmental
Beibei Yan, Zibiao Liu, Jian Wang, Yadong Ge, Junyu Tao, Zhanjun Cheng, Guanyi Chen
Summary: This study investigates the feasibility of chemical looping gasification (CLG) for the treatment and utilization of biogas residue derived from kitchen waste. It develops a novel oxygen carrier, Mn-doped Ca2Fe2O5 (MCF), and compares its performance to traditional Ca2Fe2O5 (CF) oxygen carrier. Results show that CLG with MCF demonstrates superior performance in gas yield, carbon conversion, and cold gas efficiency due to its oxygen uncoupling capability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Zhiyu Li, Xiaoshan Dong, Beibei Yan, Jian Li, Jian Wang, Liguo Jiao, Guanyi Chen, Sarwaich Ahmed, Yan Cao
Summary: This study investigates the crucial properties of oxygen carriers (OC) in chemical looping gasification and finds that LaCu0.5Fe0.5O3 exhibits the best gasification performance. The stability of OC is also evaluated through cyclic experiments.
Article
Thermodynamics
Genyang Tang, Jing Gu, Zhen Huang, Haoran Yuan, Yong Chen
Summary: Biomass-derived chemical looping gasification (BCLG) utilizes Ca-Fe oxygen carriers as catalysts to promote efficient lignocellulose conversion and hydrogen-enriched syngas production. Experimental results demonstrate the reaction mechanisms and synergistic effects of Ca-Fe oxygen carriers at different temperatures, providing insights for explaining their performance.
Article
Engineering, Environmental
Ivan Sampron, Arturo Cabello, Francisco Garcia-Labiano, Maria T. Izquierdo, Luis F. de Diego
Summary: Biomass chemical looping gasification (BCLG) is a promising technique for producing renewable syngas with negative carbon emissions. In this study, a Cu-based oxygen carrier, Cu14Al_ICB, was tested for 45 hours using pine sawdust as fuel. Factors such as the oxygen-to-fuel ratio and gasification temperature were found to affect the syngas composition and gasification parameters. The Cu14Al_ICB oxygen carrier demonstrated excellent performance in terms of syngas yield, char gasification, tar removal, and mechanical properties throughout the experiment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Dingshan Cao, Cong Luo, Wenting Xing, Guoqiu Cai, Tong Luo, Fan Wu, Xiaoshan Li, Liqi Zhang
Summary: Coal-direct chemical looping hydrogen generation (CDCLHG) is a novel process that directly produces H-2 from coal and captures CO2. In this study, perovskite oxygen carriers were synthesized and BaMnO3 was found to be the optimal oxygen carrier for CDCLHG, achieving high H-2 gas production with a high H-2 gas production rate. The BaMnO3-delta obtained during the reaction process showed the conversion of lattice oxygen to carbonate oxygen and can recover its initial structure.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Xudong Wang, Yali Shao, RongJuan Wang, Baosheng Jin
Summary: Phytoremediation technology is an important method for treating soil heavy metal contamination, but inadequate disposal of harvested phytoremediation plants can lead to re-pollution of the environment. Separated gasification chemical looping combustion (SGCLC) technology in a two-stage reactor is investigated to reduce heavy metal emissions into gas, which has advantages over traditional chemical looping combustion (CLC). Changing the temperature, bed material, and steam mass flow in the first-stage reactor affect combustion performance, heavy metal retention in bottom residue, and characteristics of the oxygen carrier. The results show that increasing temperature and steam mass flow can enhance carbon conversion and affect the retention rates of heavy metals. A rating of 8 out of 10.
Article
Energy & Fuels
Laixing Luo, Xing Zheng, Jianye Wang, Wu Qin, Xianbin Xiao, Zongming Zheng
Summary: In this study, biomass chemical looping gasification with Fe2O3 as the oxygen carrier was used for the production of hydrogen, with ethanol as the probe reaction to reveal the decomposition mechanism. The results showed that the degree of reduction of the Fe2O3(001) surface had a significant effect on the catalytic decomposition of ethanol into synthesis gas, indicating the importance of understanding the CLG reaction mechanism on perfect and reduced OC surfaces.
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
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
Thermodynamics
Kun Wang, Zewen An, Fengyin Wang, Wenzheng Liang, Cuiping Wang, Qingjie Guo, Yongzhuo Liu, Guangxi Yue
Summary: In this study, Fe-based oxygen carrier was used to investigate the multi-cycle chemical looping gasification of dried sludge in a lab-scale fluidized-bed reactor. The results showed that as the number of cycles increased, the mole fractions of H-2 and CO2 in synthesis gas eventually stabilized; carbon conversion rate peaked in the fifth cycle; and ash spheroidization and sintering occurred on the surface of OC particles due to the accumulation of unreacted lattice oxygen during the cycles.
Article
Chemistry, Physical
Cao Kuang, Shuzhong Wang, Song Lv, Jianjun Cai, Ming Luo, Jun Zhao
Summary: Cu-based oxygen carriers modified by iron ore and chrysotile showed enhanced performance in in-situ gasification and chemical-looping with oxygen uncoupling processes, improving energy conversion efficiency, stability, and high-temperature tolerance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Victor Purnomo, Ivana Stanicic, Daofeng Mei, Amir H. Soleimanisalim, Tobias Mattisson, Magnus Ryden, Henrik Leion
Summary: Iron sand, a by-product of the industry, has a reasonable iron content and low cost. It has been found that iron sand can be used as an oxygen carrier in chemical looping gasification (CLG), with an oxygen transfer capacity lower than ilmenite. Utilizing iron sand leads to higher conversion rates of pine forest residue char to CO and H2 compared to ilmenite. The study also presents novel findings on the crystalline phase transformation of iron sand at different oxidation levels.
Article
Environmental Sciences
Lei Li, Hong Wu, Haijun Chen, Jinqiang Zhang, Xinyuan Xu, Shuaijun Wang, Shaobin Wang, Hongqi Sun
Article
Thermodynamics
Huicong Yao, Chaoyu Yue, Yinfeng Wang, Haijun Chen, Yuezhao Zhu
Summary: An improved CFD model was developed and verified by experiments to study the heat and mass transfer performance of a two-phase closed thermosiphon. The results showed that the model could accurately predict the heat and mass transfer behaviors of TPCT.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Ying Wu, Xiaoping Chen, Ying Dai, Daoyin Liu, Jiliang Ma, Weiyi Xie, Haijun Chen, Lei Wang, Yuezhao Zhu, Xiaotao Bi
Summary: The new energy-saving scheme for combined heat and power (CHP) retrofitting in coal-fired power plants combines high back-pressure (HBP), absorption heat pump (AHP) and absorption heat exchanger (AHE) to reduce exergy losses and waste heat, resulting in increased power output and efficiency. By effectively applying this scheme in dual unit systems, additional power loss due to off-design conditions can be reduced or eliminated, leading to overall performance improvement. Thermodynamic, exergy, and techno-economic analyses show a 3.55% increase in power efficiency with a dynamic payback period of 1.59 years and a net present value increase of 48,805 thousand USD over a 25-year lifespan.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Jinqiang Zhang, Yunguo Li, Xiaoli Zhao, Liang Wang, Haijun Chen, Shuaijun Wang, Xinyuan Xu, Lei Shi, Lai-Chang Zhang, Yuezhao Zhu, Huayang Zhang, Yazi Liu, Gareth Nealon, Shu Zhang, Mingbo Wu, Shaobin Wang, Hongqi Sun
Summary: Photocatalysis relies on photoinduced charge carriers, and the study finds that intrinsic driving forces like IPD and BPD can significantly impact the separation and utilization of charge carriers, leading to enhanced photocatalytic performance. Alignment of PDs proves to be more effective in enhancing photocatalysis compared to other physiochemical modifications.
Article
Thermodynamics
Wenqi Zhang, Huicong Yao, Yinfeng Wang, Haijun Chen, Yuezhao Zhu
Summary: A novel ellipse-concave plate heat pipe receiver using sodium as working fluid has been developed for solar thermochemical reactors. The start-up and heat transfer performance of the receiver was investigated under different cross-section heat fluxes. Introducing temperature difference index parameters specified the start-up regime into three stages and the elliptical-concave design effectively relieved hot spots on the heating surface, enhancing heat transfer stability.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Jianbiao Chen, Shuaifei Gao, Fang Xu, Wenhao Xu, Yuanjiang Yang, Depeng Kong, Yinfeng Wang, Huicong Yao, Haijun Chen, Yuezhao Zhu, Lin Mu
Summary: Pyrolysis tests were conducted on sludge obtained from a steel production enterprise under different conditions. The results showed that the initial weight and heating rate had an impact on the pyrolysis process, and the natural dehydration rate of wet sludge increased as pore canals and crannies formed on the surface.
Article
Thermodynamics
Ying Wu, Ying Dai, Weiyi Xie, Haijun Chen, Yuezhao Zhu
Summary: A new integration scheme for combined heat and power (CHP) plant with post-combustion CO2 capture is proposed in this study. By optimizing parameter matching and recovering waste heat, the system's heating capacity and overall efficiency are increased, leading to a reduction in the cost of electricity and CO2 avoidance cost.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Yanlong Jiang, Jiawei Pan, Danran Li, Ni Zhang, Bingbing Zhu, Yichen Jiang, Haijun Chen, Yuezhao Zhu
Summary: Oil washing for tar removal has been successful, but little research has focused on mass transfer in the tar absorber, especially due to viscosity. This study simulated mass transfer performance using phenol as a simulant and silicone oil as the absorbent. The results showed that viscosity has a significant influence on the mass transfer coefficient, and the actual liquid-gas ratio affects separation performance. Optimizing the spraying angle and mass transfer layer height can improve removal efficiency.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Jinqiang Zhang, Xiaoli Zhao, Lin Chen, Shuli Li, Haijun Chen, Yuezhao Zhu, Shuaijun Wang, Yang Liu, Huayang Zhang, Xiaoguang Duan, Mingbo Wu, Shaobin Wang, Hongqi Sun
Summary: A 2D/2D van der Waals heterojunction of carbon-rich carbon nitride was successfully fabricated using a top-down strategy, resulting in improved photocatalytic performance for the water splitting reaction. The created semiconducting channel in the heterojunction exhibited enhanced electric field exposure and radiation absorption, leading to better charge carrier separation and mobility. Finite element method analysis confirmed the contribution of the heterojunction formation to the enhanced photocatalysis.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Jinqiang Zhang, Yunguo Li, Jiaming Sun, Haijun Chen, Yuezhao Zhu, Xiaoli Zhao, Lai-Chang Zhang, Shuaijun Wang, Huayang Zhang, Xiaoguang Duan, Lei Shi, Shu Zhang, Peng Zhang, Guosheng Shao, Mingbo Wu, Shaobin Wang, Hongqi Sun
Summary: This study systematically investigates the promotion effects of external heat on energetic hot carriers (EHC) in photothermal catalysis. The onset reaction temperature is found to be the key in controlling the energy synergy. Rational regulation of EHC and thermal energy can lead to optimum quantum efficiencies at a medium temperature level.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Thermodynamics
Xinxin Xing, Hongyu Zhao, Lili Zhou, Yangang Wang, Haijun Chen, Ying Gao, Yinfeng Wang, Yuezhao Zhu
Summary: This study evaluated the pyrolysis kinetics and thermodynamics of PTA sludge, and conducted a cyclic in-situ catalytic pyrolysis experiment. The results showed that pyrolysis char could promote tar cracking, leading to increased yield of pyrolysis syngas and carbon conversion rate.
Article
Chemistry, Physical
Siqian Zhang, Xiaan Xiang, Zhangfeng Shen, Yinfeng Wang, Xi Li, Xuhui Zou, Haiyang Xu, Yongyong Cao, Haijun Chen, Yangang Wang
Summary: In this study, a NiCe-MOF derived catalyst/wood carbon (NiCe-MDC/WC) was prepared by in-situ growth of layered NiCe-MOF on the surface of raw wood microchannels, and it was used for the steam reforming of biomass tar. The results showed that NiCe-MDC/WC exhibited high catalytic activity and stability, which were attributed to the multilevel structure, metal-support interactions, and the presence of Ce.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Huicong Yao, Lingfeng Guo, Hao Liu, Xiaoyuan Wang, Haijun Chen, Yinfeng Wang, Yuezhao Zhu
Summary: This study investigates the phase-change flow inside a two-phase loop thermosyphon (TPLT) through a combined three-dimensional computational fluid dynamics (CFD) simulation and experimental investigation. The results show that the vertical evaporator heating mode at a filling ratio of 23.3% has the lowest thermal resistance, while the horizontal evaporator heating mode has better thermal performance. Additionally, the use of a porous media can increase flow stability in the horizontal evaporator.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Liqiu Li, Huicong Yao, Yinfeng Wang, Haijun Chen, Yuezhao Zhu
Summary: The study shows that coating the surface of copper foam with zinc oxide nanoparticles using magnetron sputtering can directly enhance the boiling heat transfer performance of metal foam wicks, especially for low PPI copper foams. After 12 hours of magnetron sputtering, the heat and mass transfer performance of the 30 PPI copper foam wick improves significantly.
JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
(2021)
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.