Article
Engineering, Environmental
Lu Dong, Hai Wang, Yaji Huang, Jianrui Zha, Haoqiang Cheng, Lingqin Liu, Zhicheng Zhu, Hao Chen, Shouyi Ding, Sheng Wang
Summary: A magnetically recoverable sorbent incorporating γ-Fe2O3 into attapulgite and loaded with CuCl2 was developed for efficient removal of Hg-0 from coal combustion flue gas. The sorbent showed promising results in Hg-0 removal at high temperature, with the mechanism involving O-2 regeneration and Cu/Fe re-oxidation. The sorbent was less affected by NO and SO2, and the presence of HCl and O-2 aided in regeneration for multiple cycles.
CHEMICAL ENGINEERING JOURNAL
(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
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
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
Energy & Fuels
Jianping Yang, Qin Li, Wenbing Zhu, Wenqi Qu, Min Li, Zhengyong Xu, Zequn Yang, Hui Liu, Hailong Li
Summary: This study utilized the abundant mineral chalcopyrite as an efficient trap for Hg-0 sequestration, showing excellent removal performance in a wide temperature range and minimal interference from typical flue gas components. The adsorption capacity and rate of CuFeS2 were significantly higher than commercial activated carbons, attributed to the oxidizing and immobilizing abilities of disulfide ligands, and the sorbent could be regenerated through thermal decomposition, saving operation costs. CuFeS2 is identified as a potential, cost-effective trap for efficient remediation of Hg-0 from coal combustion flue gas.
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)
Article
Chemistry, Physical
Mengli Zhou, Yang Xu, Guangqian Luo, Qingzhu Zhang, Lin Du, Zehua Li
Summary: This study prepared Ce-Fe binary oxide modified bentonite for mercury removal from flue gas. The modified bentonite showed better removal performance and the removal mechanism was revealed. Furthermore, the deactivated modified bentonite can be effectively regenerated after thermal treatment.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Xin Huang, Zijun Ran, Zhi He, Jingyu Ran
Summary: Mercury, mainly derived from coal-fired power plants, has a significant impact on the environment. In this study, we propose a potential method for efficient removal of Hg0 through oxidation reactions using Ce-doped LaCoO3 supported on CeO2 catalyst. The catalyst characterization results confirm the successful substitution of Co with Ce in the LaCoO3 crystal lattice. The Hg0 removal experiments demonstrate that the La0.875Ce0.125CoO3/CeO2 catalyst exhibits the highest removal efficiency, and the presence of O2 greatly enhances its effectiveness. The addition of H2O and SO2 reduces the Hg0 removal efficiency due to competitive adsorption, but the presence of O2 allows SO2 to react with Hg0 and recover the efficiency.
Article
Engineering, Environmental
Feng Xin, Rihong Xiao, Yongchun Zhao, Junying Zhang
Summary: This research proposes a method to reduce elemental mercury emission from coal-fired power plants by modifying magnetospheres with H2S as a sorbent. The modified magnetospheres show high affinity towards Hg-0 and can achieve over 80% adsorption efficiency. The technology has low cost, high recyclability, and minimal impact on environmental mercury pollution.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Yuying Wei, Xiaopeng Zhang, Cheng Gao, Xinxin Wang, Ning Zhang, Junjiang Bao, Gaohong He
Summary: The organic-inorganic hybrid nanowires prepared by hydrothermal method can be used to prepare mesoporous Co3O4 nanotube sorbents, which have a well-defined tubular structure, abundant active sites, and high redox property, effectively removing Hg0 from flue gas.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Mengli Zhou, Yang Xu, Guangqian Luo, Qingzhu Zhang, Lin Du, Xiaowei Cui, Zehua Li
Summary: Phosphorus-doped biochars (PBCs) derived from one-step pyrolysis of H3PO4-laden biomass showed improved mercury removal efficiency and surface area. The chemisorption mechanism involving electron transfer was responsible for the enhanced Hg-0 oxidation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yan Shao, Jinhang Fan, Jiayi Li, Jiangxiu Yang, Yuan Wang, Hongcheng Ruan, Zihao Liu, Honghu Li, Yifei Long, Jiangjun Hu
Summary: Adding dysprosium to modify the Mn-Fe mixed oxide sorbent can enhance its Hg-0 removal performance and SO2 tolerance, making it a promising material for flue gas treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Shuzhou Wei, Tianle Zhang, Junying Zhang, Zhuo Xiong, Yongchun Zhao
Summary: This study analyzes the economic benefits of using renewable magnetospheres for mercury removal from coal-fired flue gas. The results show that the recovery of magnetospheres and mercury can bring higher economic returns. This technology can reduce operating costs and has significant economic investment potential, which is important for further commercialization.
Article
Green & Sustainable Science & Technology
Vanish Kumar, Sherif A. Younis, Jan E. Szulejko, Ki-Hyun Kim
Summary: This study evaluates the photocatalytic removal potential of BiOI photocatalysts in their pristine and composite forms against gaseous Hg-0. The results show promising performance in certain performance metrics, but there are still challenges and limitations to be addressed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
Zijian Zhou, Lei Liu, Xiaowei Liu, Yue Zhou, Changqing Wang, Jingying Xu, Guozhang Chang, Minghou Xu
Summary: MnOx-based oxides are efficient catalysts for elemental mercury oxidation in flue gas, and combining with CeO2 or CeO2-ZrO2 enhances their catalytic activity. The new MnOx-CeO2-ZrO2 solid solution catalyst showed better Hg-0 oxidation performance compared to the MnOx/CeO2-ZrO2 supported catalyst. Mn4+ and surface active oxygen were identified as the active species in Hg-0 oxidation reactions, and SO2 significantly inhibited the activity of MnOx/CeO2-ZrO2 but had less impact on MnOx-CeO2-ZrO2 solid solution.
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%.
Review
Chemistry, Applied
Dawei Guo, Dongdong Feng, Yu Zhang, Yalong Zhang, Yijun Zhao, Zijian Zhou, Jian Sun, Cui Quan, Guozhang Chang, Shaozeng Sun
Summary: This review summarizes the research results of carbon material-TiO2 cross-linked structure for the photocatalytic degradation of VOCs and reduction of CO2. It analyzes the impact of environmental factors on photocatalytic efficiency, the characteristics of different modification methods, and the synergistic mechanism of carbon material-TiO2.
FUEL PROCESSING TECHNOLOGY
(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.