Article
Energy & Fuels
Daoyang Ma, Renhui Ruan, Yingdian Li, Lan Zhang, Xuebin Wang, Jingbin Zi, Yibin Wang, Hao Li, Hongbo Wen, Houzhang Tan
Summary: The combustion of SEH coal produces fine particles mainly consisting of NaCl, while TC coal combustion could result in Na2SO4 and CaSO4 fine particles. Coarse particles mainly consist of silicon, aluminum, calcium and magnesium, with calcium being the most abundant element.
Article
Energy & Fuels
Xiaoyu Zhang, Yuzhong Li, Lu Wang, Zhuping Zhang, Yong Dong
Summary: This study found that adding an appropriate amount of biomass to pulverized coal can effectively inhibit the production of coal-fired condensable particulate matter. Cornstalk showed the most significant inhibitory effect on CPM, with an addition ratio of around 30%. Additionally, adding cornstalk was also found to decrease the content of certain components in CPM and efficiently reduce the amount of aromatic compounds, the substances with the highest toxicity levels in CPM, at an approximate addition ratio of 30%.
Article
Environmental Sciences
Muhammad Imran, Shiraz Khan, Abdelmohsen A. Nassani, Mohamed Haffar, Haroon ur Rashid Khan, Khalid Zaman
Summary: Environmental health is crucial for the economy and sustainability. The study in Pakistan demonstrates the positive impact of cleaner development on healthcare costs, while also highlighting the negative effect of particulate matter on sustainable healthcare. Carbon emissions are found to be responsible for emissions-driven healthcare expenses, emphasizing the importance of stringent environmental regulations and reducing industrial toxins and coal reliance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Wei Cheng, Youjian Zhu, Jing'ai Shao, Wennan Zhang, Guihao Wu, Hao Jiang, Junhao Hu, Zhen Huang, Haiping Yang, Hanping Chen
Summary: A new phosphoric acid modification method was proposed to improve the reduction efficiency of PM0.2 by kaolin additive in agricultural biomass pellet combustion, significantly reducing PM0.2 emissions. The modification destroyed the internal structure of kaolin and increased its pore structure, leading to better alkali capture ability.
Article
Thermodynamics
Marek Pronobis, Robert Wejkowski, Sylwester Kalisz, Szymon Ciukaj
Summary: The aim of this work is to analyze the feasibility of converting a pulverized coal boiler to 100% biomass combustion using torrefied PKS. By replacing hard coal with torrefied biomass, CO2 emissions can be practically eliminated, and the problem of coal shortages in Europe can be reduced. However, there are challenges to address such as boiler fouling, grinding new fuel, changing NOx emissions, and exhaust gas dew point. Measurements and calculations were conducted to assess the risks of slagging and fouling and to evaluate the potential use of Dunino halloysite for protection against corrosion. The results show that the combustion of PKS leads to higher flue gas temperatures compared to coal combustion.
Article
Chemistry, Applied
Xinglei Qiu, Yueming Wang, Zhengang Zhou, Yuanqiang Duan, Lunbo Duan
Summary: Pressurized fluidized bed oxy-fuel combustion is considered a promising clean coal technology for CO2 capture. This study investigated the particulate matter formation under pressurized conditions and found that the concentration of PM1 in oxy-fuel combustion was higher than in air combustion, but the difference decreased with increasing pressure. Additionally, elevated pressure reduced the concentration of PM1 while increasing the concentration of PM1-10.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Thermodynamics
Zhenhua Yuan, Zhichao Chen, Bo Zhang, Xuelin Gao, Jiawei Li, Yanyu Qiao, Zhengqi Li
Summary: In this study, the slagging trends in the pre-combustion chamber (PCC) under different excess air coefficients were investigated using CFD simulation. It was found that the collision rate, deposition rate, and sticking rate of particles on the PCC walls increased exponentially with the increase of excess air coefficient, indicating a rapid growth in wall abrasion. However, when the excess air coefficient was 0.3, the deposition rate and sticking rate of particles on the PCC walls were much larger due to the presence of a sizable annular recirculation zone, leading to the worst slagging trend. Therefore, it is recommended to adjust the excess air coefficient between 0.5 and 0.9 to improve the safety of boiler operation.
Article
Green & Sustainable Science & Technology
Yong Wei, Guijian Liu, Biao Fu, Ruwei Wang, Yuan Liu, Xuan Xue, Mei Sun
Summary: This study evaluated the distribution and partitioning behavior of Pb in size-resolved fine PM collected from an industrial circulating fluidized bed power plant. The mechanism of Pb enrichment in supermicron particles was mainly controlled by surface adsorption reaction, while gas-film transfer or heterogenous condensation might represent the deposition mechanism for submicron particles. Additionally, the emission of fine SiO2-bearing particles should be limited due to their potential harm to the respiratory system.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Zhenyao Xu, Yujia Wu, Siqi Liu, Minghui Tang, Shengyong Lu
Summary: This study investigates the emissions of filterable particulate matter (FPM) and condensable particulate matter (CPM) from a coal-fired power plant. The results show that the concentration of CPM increases when coal is mixed with sludge. Most air pollutant control devices have a positive effect on the removal of FPM and CPM, except for the selective catalytic reduction (SCR) denitration device. The low-low temperature electrostatic precipitator has the highest removal efficiency for both FPM and CPM. The organic fraction in CPM is mainly composed of hydrocarbons and organosilicon.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Nicolas Alamos, Nicolas Huneeus, Mariel Opazo, Mauricio Osses, Sebastian Puja, Nicolas Pantoja, Hugo Denier van der Gon, Alejandra Schueftan, Rene Reyes, Ruben Calvo
Summary: This study presents a high-resolution national inventory of anthropogenic emissions for Chile. The emissions from different sectors during the period of 2015-2017 are estimated and spatially distributed. The residential sector is found to contribute the most emissions, while mining activities and thermoelectric power plants dominate the emissions in northern Chile. Transport and residential emissions are the major sources in central and southern Chile.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Energy & Fuels
Yishu Xu, Xiaowei Liu, Jingji Zhu, Kai Zhang, Huakun Wang, Jingying Xu, Minghou Xu
Summary: The study found that adding a small amount of nano Al2O3 and TiO2 can effectively reduce the mass yields of central PM and PM2.5, showing different PM reduction characteristics compared to traditional additives. The nano additives promoted the migration of small ash particles into coarse PM and minimized the migration of mineral vapors into central PM via heterogeneous condensation, enhancing the condensation/reaction of mineral vapors with larger specific surface area.
Article
Environmental Sciences
Huakun Wang, Yishu Xu, Kai Zhang, Baohua Zhang, Shanshan Min, Yimin Liu, Jingji Zhu, Jingjing Ma
Summary: The addition of nano SiO2 as a coal combustion additive can effectively reduce the formation of ultrafine particulate matter, showing higher capture efficiency than existing micron-sized natural clay minerals. However, its performance varies depending on the coal type due to differences in ash content and composition.
Article
Environmental Sciences
Yujia Wu, Zhenyao Xu, Siqi Liu, Minghui Tang, Shengyong Lu
Summary: This study sampled CPM and FPM emitted from two coal-fired industrial boilers with APCDs, studying their components, organic fractions, and emission concentrations. The study found that saturated hydrocarbons are the main component of organic fractions in CPM, while the proportion of esters in oxygen-containing derivatives is relatively high.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Yuan He, Xinpei Li, Tingting Li, C. Srinivasakannan, Shiwei Li, Shaohua Yin, Libo Zhang
Summary: The discharge of chlorine-containing wastewater is a serious and widespread environmental problem that demands urgent attention. The complex composition of chlorine-containing wastewater makes the removal process difficult, thus prompting the need for green and sustainable treatment methods. This review analyzes various mechanisms, optimum parameters, advantages, and disadvantages to comprehend the state-of-the-art technologies for Cl- removal. Both traditional and enhanced methods can achieve a removal rate of over 90% for Cl-. Additionally, the review presents the developmental trends and potential improvements for these approaches.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Chemistry, Applied
Wu Yang, Deepak Pudasainee, Rajender Gupta, Wei Li, Ben Wang, Lushi Sun
Summary: This paper systematically reviews the PM sampling and measurement methods, formation mechanisms, distribution, inorganic composition and the factors influencing PM emission during combustion of coal/biomass/MSW. Coarse particle emissions from coal combustion are generally higher than those from biomass, while ultrafine and fine particle emissions from biomass combustion are higher than those from coal. Particle emissions are related to various influencing factors such as solid fuel particle size, inherent ash content, mineral properties, binding form of inorganic elements, combustion parameters, and ash chemical composition.
FUEL PROCESSING TECHNOLOGY
(2021)
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
Engineering, Environmental
Jie Xu, Xiaowei Liu, Zijian Zhou, Lidan Deng, Lei Liu, Minghou Xu
Summary: Experimental and theoretical studies reveal that doping of Cr into MgAl layered double hydroxide can effectively reduce band gap, introduce intermediate band, generate more surface defects, and lower the energy of CO release, comprehensively enhancing activity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Lidan Deng, Xiaowei Liu, Zaikun Wu, Jie Xu, Zijian Zhou, Minghou Xu
Summary: In this study, the conventional sequential impregnation synthetic method for preparing Pt-Sn/SiO2 catalysts for propane dehydrogenation was improved. Different synthesis procedures were examined and the results showed that the direct reduction method produced Pt3Sn alloy nanoparticle and displayed the best catalytic performances. These findings demonstrated the importance of suitable catalyst preparation procedures to enhance the catalytic activities of Pt-Sn/SiO2 catalysts.
Article
Thermodynamics
Le Lei, Xiaowei Liu, Huakun Wang, Yue Zou, Yishu Xu, Minghou Xu
Summary: In this study, a solar-aided coal-fired power generation (SACPG) system is proposed to combine solar energy with traditional coal-fired power stations in order to solve the issues of massive coal consumption and pollution discharge. The research shows that using solar energy to heat the feedwater recycle system can achieve the highest total thermal efficiency and boiler thermal efficiency, thus saving coal and water resources.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Engineering, Environmental
Yue Zou, Xiaowei Liu, Kui Wu, Yunfei Zhai, Yuyang Li
Summary: This study investigates the impact of sulphur and chlorine on the formation of condensable particulate matter (CPM) during coal combustion. The addition of SO2 increases the CPM content, while the presence of chlorine decreases the sulphur content in CPM. These findings are significant for understanding the generation mechanism of CPM.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Thermodynamics
Aoyang Zhang, Xiaowei Liu, Yishu Xu, Tianpeng Zhang, Minghou Xu
Summary: An improved model of fine particulate matter formation, which combines the mechanisms of mineral coalescence and char fragmentation under different pulverized coal combustion environments, has been developed. The model includes a three-dimensional sub-model of char particles and a sub-model of mineral melting coalescence. The model has shown good fitting effects with experimental data and provides a better understanding of the particulate matter formation process.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(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
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)
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.