Article
Energy & Fuels
Jingkun Han, Dunxi Yu, Jianqun Wu, Xin Yu, Fangqi Liu, Zihao Wang, Minghou Xu
Summary: The study investigates the impact of cofiring rice husk and its torrefied product with high-Na/Ca/Cl low-rank coal on PM10 emission and elemental partitioning. Results show that cofiring raw or torrefied rice husk reduces emissions of PM1 but elevates PM1-10 emissions. The formation of Ca-silicates weakens particle agglomeration.
Article
Environmental Sciences
Zhaochen Shi, Yixiang Shu, Zongyi Wang, Hui Mao, Jiaye Zhang, Houzhang Tan, Xuebin Wang
Summary: Coal gasification is an effective method for clean and efficient utilization of coal, and the by-product of coal gasification, coal gasification fine slag, has high carbon content, large specific surface area, developed pore structure, and high output. Combustion has become an effective large-scale disposal method for coal gasification fine slag, and the fine slag after combustion can be further used as construction raw materials. This study investigated the emission characteristics of gas-phase pollutants and particulate matter under different combustion conditions, and found that co-firing coal gasification fine slag with raw coal can reduce submicron particle emission and total emission of gas-phase pollutants. Elemental analysis showed that furnace temperature and O2 concentration significantly influenced the formation of submicron particles.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Thermodynamics
Meng Ma, Jiaofei Wang, Yonghui Bai, Peng Lv, Xudong Song, Weiguang Su, Juntao Wei, Guangsuo Yu
Summary: This study investigated the volatile-char interaction in coal and cow manure co-pyrolysis process and its effect on coal char reactivity. The results showed that the interaction inhibited coal char reactivity, but the inhibition varied depending on the vapor-residence time and co-pyrolysis mode.
Article
Chemistry, Physical
Ishrat Baki Borno, Warda Ashraf
Summary: This study aims to enhance the reactivity of clay blends by co-calcining kaolinite and montmorillonite clay blends with alkali and alkali earth metal hydroxides. The results show that low dosages of NaOH, KOH, and Mg(OH)2 promote amorphization and increase dissolution, while high dosages decrease reactivity. The seawater-cured samples reveal the presence of hydrocalumite, ettringite, gehlenite, hydrogarnet, and calcium aluminum silicate hydrate minerals.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Mengya Ma, Wenfeng Wang, Kun Zhang
Summary: This study explores the occurrence and distribution characteristics of fine-grained pyrites in coal and their impact on flotation efficiency. Experimental results show that fine-grained pyrites in coal have diverse occurrence forms and complex connections with the coal matrix. The distribution of pyrite content in coal can be altered through fragmentation. Flotation desulfurization experiments reveal that coal particles with size 15-37 μm have significantly higher pyrite content compared to particles with sizes 37-44 μm and 44-75 μm. The complex occurrence morphology and crystal structure of fine-grained pyrite make it difficult to be removed from the coal matrix during ore grinding in flotation.
Article
Energy & Fuels
Yang Lu, Ran Cao, Dongwei Huang, Zhenni Cui, Ying Wang, Yongfa Zhang
Summary: In this study, shale char rich in Si/Al was used as an additive for Zhundong coal, which effectively reduced the volatilization of sodium/calcium elements and improved the ash fusion temperature. The formation of aluminosilicate minerals from shale char reduced the corrosivity of Zhundong coal, and alleviated the clustering and sintering issues of the ash.
Article
Energy & Fuels
Yang Lu, Ran Cao, Dongwei Huang, Zhenni Cui, Ying Wang, Yongfa Zhang
Summary: Co-firing with high Si/Al additives, such as shale char, is an effective method to mitigate ash-related issues, increase the retention ratios of sodium/calcium, reduce fouling and slagging tendency, and enhance the AFTs of Zhundong coal. The addition of shale char transforms AAEM-containing minerals in Zhundong coal to aluminosilicate phase, effectively reducing their corrosivity, and alleviating slagging issues by decreasing the content of cluster ash particles.
Article
Green & Sustainable Science & Technology
An Ha Truong, Minh Ha-Duong, Hoang Anh Tran
Summary: The study shows that co-firing biomass in coal power plants in Vietnam can bring positive business and social benefits, especially through reducing air pollution. Additionally, the job creation effect of collecting straw is greater than the job destruction effect of using less coal.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Zhijia Liu, Zixing Feng, Hongzhong Xiang, Jianfei Yang, Jian Zhang
Summary: The ash fusion characteristics of bamboo and coal co-firing process were found to have similar chemical compositions with coal ash, with bamboo increasing the ash fusion temperatures of blends. The recommended optimum blend ratio of bamboo and coal is 30%:70%. These results will provide scientific guidance for using bamboo residues for energy products.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Environmental Sciences
Ao Zhou, Wenjing Ma, Renhui Ruan, Shilin Yu, Houzhang Tan, Shuanghui Deng, Kun Liang, Kai Liu, Donglin Han, Xuebin Wang
Summary: This study investigated the formation characteristics of submicron particles in the co-firing process of coal and municipal sewage sludge (MSS). The results showed that the furnace temperature and sludge addition ratio had a significant impact on the formation of PM0.4. Increasing the furnace temperature promoted the formation of PM0.4 during sludge combustion, but the volume and mass concentration of PM0.4 produced from pulverized coal combustion were lower than that of sludge. In the co-firing process, increasing the sludge addition ratio reduced the concentration of PM0.4 by promoting the scavenge of certain elements, and increasing the furnace temperature inhibited the formation of PM0.4. However, the effect of furnace temperature on the elemental composition of PM0.4 was not significant.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Energy & Fuels
Xin Wang, Weidong Fan, Jun Chen, Guanyu Feng, Xiang Zhang
Summary: This paper investigates the application of ammonia/coal co-firing in a wall-temperature controlled staged combustion furnace for low carbon and low NOx emissions. The study examines the effects of burnout air addition positions and combustion environmental temperatures on emissions, as well as the release characteristics of co-firing products. Experimental results and chemical kinetic calculations provide insights into the release patterns and mechanisms, presenting a promising solution for reducing CO2 and NOx emissions from coal-fired power plants.
Article
Energy & Fuels
Xin Wang, Weidong Fan, Jun Chen, Guanyu Feng, Xiang Zhang
Summary: Ammonia is considered as an alternative energy source with high utilization potential due to its carbon-free and hydrogen-rich properties. Ammonia/coal co-firing can effectively reduce CO2 emissions and control NO emissions, with a recommended co-firing ratio of 20-30% ammonia. Ammonia co-firing promotes coal gasification reactions, increases CO concentration, inhibits H2S release, and enhances the decomposition process.
Article
Engineering, Environmental
Qinwen Liu, Wenqi Zhong, Aibing Yu, Chi-Hwa Wang
Summary: This study investigates the nitrogen and sulfur pollutants generated from co-firing coal and biomass under pressurized oxy-fuel combustion. The results show that increasing combustion pressure and biomass blending ratio can significantly reduce emissions of nitrogen oxides, sulfur dioxide, and carbon monoxide, and improve the sulfur self-retention efficiency. The study also reveals that sulfur self-retention occurs through direct sulfation under the typical operating temperature range. Additionally, the pressurized and co-firing conditions have a synergistic effect on reducing sulfur dioxide emissions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Seong-Ju Kim, Sung-Jin Park, Sung-Ho Jo, Hookyung Lee, Sang-Jun Yoon, Ji-Hong Moon, Ho-Won Ra, Sung-Min Yoon, Jae-Goo Lee, Tae-Young Mun
Summary: An experimental study was conducted on coal-NH3 co-firing in a pilot-scale circulating fluidized bed combustion test rig. The results showed that injecting NH3 in the dense bed zone reduced NO emissions, while injecting NH3 in the wind box position reduced both NO and CO emissions. However, this co-firing technology increased N2O emissions.
Article
Engineering, Chemical
Chuandong Ma, Zhisen Li, Wenqi Zhang, Meng He, Qingbiao Wang, Zhenhua Wang, Lin Li, Xiaofang You
Summary: In this study, hydrocarbon oil was used to modify coal gasification fine slag, enhancing its hydrophobicity and improving the flowability of the resulting coal-water slurry. The addition of hydrocarbon oil also reduced the ignition temperature of the slurry. These findings suggest that hydrocarbon oil modification is beneficial for enhancing the properties of coal gasification fine slag and its slurry.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Engineering, Chemical
Shuanghui Deng, Shilin Yu, Houzhang Tan, Xuebin Wang, Xuchao Lu
Summary: Hydrothermal treatment (HT) was used to study the effects of reaction time on the dewatering performance and product characteristics of oily scum, with increased reaction time leading to higher liquid yield and lower moisture content in hydrochars; hydrochars exhibited smooth and rough surfaces, and the combustion process was easier and separated into two phases.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Thermodynamics
Jiaye Zhang, Chongming Chen, Jie Lu, Zhaochen Shi, Ao Zhou, Houzhang Tan, Xuebin Wang
Summary: This study investigates the influence of pressure on coal pyrolysis behavior and finds that a revised single bubble model can effectively predict the swelling behavior and porosity evolution. The results show an optimal pressure range of 7-15 atm, and the model performs better at high pressure conditions.
COMBUSTION SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Zhongfa Hu, Xuebin Wang, Yuegui Zhou, Hao Wu, Peter Glarborg, Houzhang Tan
Summary: The oxy-combustion of biomass enables negative CO2 emissions by combining subsequent CO2 capture technology. The potassium sulfation process significantly affects deposition and corrosion in heat transfer surfaces during biomass combustion. In the present work, a detailed aerosol dynamics model coupling with the detailed gas-reaction chemistry of K-S-Cl is proposed to investigate the effect of alkali chemistry on the evolution of postflame aerosol during oxy-combustion of biomass.
Article
Energy & Fuels
Shijie Zheng, Yan Qian, Xuebin Wang, Milan Vujanovic, Yingjia Zhang, Zia Ur Rahman, Penghui Yang, Fei Duan, Houzhang Tan, Amir De Toni, Yang Li, Hrvoje Mikulcic
Summary: This study investigated the pyrolysis and oxidation processes of DMF and the use of NH3-SNCR method to control NOx emissions. The results showed that NH3-SNCR had a significant deNOx effect in the industrial incineration of DMF at temperatures between 825-875 degrees Celsius, but it was not effective in limiting N2O emissions at the same time.
Article
Environmental Sciences
Ao Zhou, Wenjing Ma, Renhui Ruan, Shilin Yu, Houzhang Tan, Shuanghui Deng, Kun Liang, Kai Liu, Donglin Han, Xuebin Wang
Summary: This study investigated the formation characteristics of submicron particles in the co-firing process of coal and municipal sewage sludge (MSS). The results showed that the furnace temperature and sludge addition ratio had a significant impact on the formation of PM0.4. Increasing the furnace temperature promoted the formation of PM0.4 during sludge combustion, but the volume and mass concentration of PM0.4 produced from pulverized coal combustion were lower than that of sludge. In the co-firing process, increasing the sludge addition ratio reduced the concentration of PM0.4 by promoting the scavenge of certain elements, and increasing the furnace temperature inhibited the formation of PM0.4. However, the effect of furnace temperature on the elemental composition of PM0.4 was not significant.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Zia Ur Rahman, Xuebin Wang, Jiaye Zhang, Zhiwei Yang, Gaofeng Dai, Piyush Verma, Hrvoje Mikulcic, Milan Vujanovic, Houzhang Tan, Richard L. Axelbaum
Summary: Pressurized oxy-combustion is a solution for reducing CO2 emissions from coal-fired power plants, but the generation and reduction of NOx need to be addressed. This review examines the formation and abatement of NOx in pressurized oxy-coal combustion and provides recommendations for future research.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Renhui Ruan, Qiwei An, Houzhang Tan, Shiyao Jia, Xuebin Wang, Jianghua Peng, Peng Li
Summary: The study found that the reduction efficiency of PM0.4 by calcined kaolin during Zhundong lignite combustion is related to the Si-Al compound content, with chemical adsorption contributing the most to PM0.4 reduction. Additionally, the PM0.4 reduction efficiency is proportional to the furnace temperature in the range from 900 degrees C to 1300 degrees C.
Article
Energy & Fuels
Daoyang Ma, Shiyao Jia, Zhongfa Hu, Xuebin Wang, Liangyu Li, Houzhang Tan, Zia Ur Rahman
Summary: This study aims to investigate the effect of water washing pretreatment on the leachate characteristics of inorganic elements and organic matter from SEH coal, as well as compare the combustion properties and ash migration between raw coal and washed coal. The results show that water washing can effectively remove approximately 80% of sodium and chlorine elements, as well as some organic matter.
Article
Environmental Sciences
Wei Yu, Hanlin Zhang, Xuebin Wang, Zia Ur Rahman, Zhaochen Shi, Yonghui Bai, Guishan Wang, Yongqiang Chen, Jianjun Wang, Lijun Liu
Summary: This paper studies the enrichment behavior of residual carbon in coal gasification fine slag by a spiral separator. The experimental results show that the spiral separator efficiently removes ash and enriches carbonaceous components in the slag, producing a concentrate product with higher combustion reactivity and iodine adsorption ability. This research has great significance in the development of utilizing coal gasification fine slag and recovering residual carbon.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Thermodynamics
Jinhu Liang, Ruining He, Shijie Zheng, Fei Li, Yang Li, Jonatas Vicente, Amir Antonio Martins de Oliveira, Amir De Toni Jr, Xin Bai, Xuebin Wang, Qian Yan
Summary: A new chemical kinetic mechanism of DMF has been proposed and experimentally evaluated for ignition delay times, high temperature pyrolysis, and laminar flame speeds. The results provide insights into the combustion characteristics of DMF and potential refinements for the proposed mechanism.
COMBUSTION AND FLAME
(2022)
Article
Energy & Fuels
Wei Yu, Xuebin Wang, Lijun Liu, Houzhang Tan, Zia Ur Rahman
Summary: This study uses low field nuclear magnetic resonance (LF-NMR) analysis to investigate the water occurrence states in a filter cake with 70.7% moisture content derived from fine gasification slag. The analysis reveals that free water constitutes a major proportion, while combined and capillary water accounts for a smaller percentage. The drying rate of the slag is significantly affected by the temperature, with the highest drying rate achieved at 100 degrees C.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Renhui Ruan, Xiaoxiao Wang, Jianyu Li, Baochong Cui, Zhaomin Lyu, Xuebin Wang, Houzhang Tan
Summary: The study explores the effect of preheating temperature and combustion temperature on fine mode particle formation in preheating combustion. It is found that preheating combustion with optimized temperatures can effectively reduce the production of PM0.4 and NOx. The mass yield of PM0.4 remains relatively unchanged with preheating temperature, but increases with combustion temperature when it is higher than the preheating temperature. Higher preheating temperature and lower combustion temperature are recommended for reducing PM0.4 and NOx formation.
Article
Energy & Fuels
Gaofeng Dai, Su Zhang, Yixiang Zhang, Yuhan Liao, Jiaye Zhang, Houzhang Tan, Hrvoje Mikulc, Xuebin Wang
Summary: This study investigated the formation and control of N2O in pressurized oxy-combustion by studying the effects of CO2 atmosphere, pressure, temperature, residence time, and O2 concentration on N2O decomposition in a pressurized plug flow reactor. The results showed that CO2 atmosphere significantly promoted N2O decomposition, and increasing temperature and pressure also enhanced the decomposition efficiency. The experimental results were compared to kinetic modeling results, and it was found that GLA2018 mechanism underestimated the decomposition while GRI3.0 mechanism accurately predicted it at certain conditions. Overall, the decomposition of N2O is significantly enhanced in pressurized oxy-combustion.
Article
Energy & Fuels
Ao Zhou, Shilin Yu, Shuanghui Deng, Hrvoje Mikulcic, Houzhang Tan, Xuebin Wang
Summary: This paper studied the enrichment characteristics of different heavy metals in municipal sludge and its pyrolysis biochar, as well as their leaching characteristics in the environment. The experimental results showed that pyrolysis can promote the enrichment of heavy metals in sludge in pyrolysis biochar. Different metals have different responses to pyrolysis temperature. Pyrolysis can inhibit the leaching of heavy metals in sludge, and the leaching rates of certain metals first increase and then decrease with increasing pyrolysis temperature.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Energy & Fuels
Zia Ur Rahman, Xuebin Wang, Hrvoje Mikulcic, Shangkun Zhou, Jiaye Zhang, Milan Vujanovic, Houzhang Tan
Summary: The study focused on NOx formation from ammonia oxidation in pressurized oxy-combustion (POC) and its control mechanisms. The results indicated that elevated pressure can help inhibit NOx formation, while the efficiency of NO reduction through reburning process increases with pressure. Furthermore, the conversion of NO to N-2 is enhanced by raising the pressure level.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
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.