Fuel Processing Technology最新文献

Methods and techniques for determining the gas content of coal seams in China: a mini-review 中国煤层含气量测定方法与技术综述

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-06-05 DOI: 10.1016/j.fuproc.2025.108257

Demin Chen , Baohua Qu , Jinyao Zhang , Qingming Long , Rui Sun

{"title":"Methods and techniques for determining the gas content of coal seams in China: a mini-review","authors":"Demin Chen , Baohua Qu , Jinyao Zhang , Qingming Long , Rui Sun","doi":"10.1016/j.fuproc.2025.108257","DOIUrl":"10.1016/j.fuproc.2025.108257","url":null,"abstract":"<div><div>Coal seam gas content is a critical parameter for characterizing coal reservoirs, offering essential insights for gas disaster prevention and coalbed methane resource exploitation. This mini-review systematically examines coal pore structures, methane occurrence mechanisms, adsorption-desorption dynamics, and factors affecting gas desorption in granular coal. Focusing on China's context, it evaluates current methods and technologies for gas content determination. The direct method, relying on in-situ sealed sampling and coal-crushing techniques, remains the predominant approach, with advancements in truth-preserving sampling enhancing accuracy. Indirect prediction models, integrating geological and desorption data, have emerged but face limitations due to China's heterogeneous coal seams, as most models are validated only in localized mining areas. Challenges persist in model portability and applicability across diverse geological settings. The review identifies key gaps, including insufficient theoretical underpinnings of gas transport mechanisms and technical constraints in high-precision in-situ measurements. Future directions emphasize advancing theoretical frameworks, refining indirect models through multi-regional validation, and developing portable, real-time in-situ technologies to improve reliability and scalability. Measurement techniques for coal seam gas content are evolving toward greater diversity, prioritizing enhanced theoretical frameworks and high-precision in-situ technologies as pivotal future advancements.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"275 ","pages":"Article 108257"},"PeriodicalIF":7.2,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stability of non-premixed turbulent methane flames: Numerical simulations of the critical diameter and flame stability limits 非预混甲烷湍流火焰的稳定性：临界直径和火焰稳定性极限的数值模拟

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-06-05 DOI: 10.1016/j.fuproc.2025.108249

Mina Kazemi, Sile Brennan, Vladimir Molkov

{"title":"Stability of non-premixed turbulent methane flames: Numerical simulations of the critical diameter and flame stability limits","authors":"Mina Kazemi, Sile Brennan, Vladimir Molkov","doi":"10.1016/j.fuproc.2025.108249","DOIUrl":"10.1016/j.fuproc.2025.108249","url":null,"abstract":"<div><div>A Computational Fluid Dynamics (CFD) model is developed and validated against experimental data to predict the critical diameter and stability limits of non-premixed turbulent methane flames. The critical diameter defines the orifice size beyond which a stable flame persists at all driving pressures and below this pressure stability is pressure-dependent. Flame stability follows a “peninsula” curve of pressure versus release diameter, with sustained flames above the upper and below the lower pressure limits, while the intermediate region represents a blow-out zone where combustion is not sustained. The critical diameter, at the curve's rightmost point, is crucial for predicting sustained flames. Methane releases have been simulated for conditions in the region of the critical diameter, and for diameters and pressures ranging from 15 to 45 mm and 0.01 to 20 MPa, respectively, corresponding to the upper and lower flame stability limits using the realizable k − ε model and EDC combustion model. The simulations accurately captured blow-out and sustained flames, yielding a critical diameter of 42 mm, consistent with experiments. A methane flame at 5.88 MPa gauge through a 50 mm orifice was also simulated, showing flame length and lift-off distance in agreement with experimental observations. These results confirm the model's reliability in predicting methane flame stability, providing valuable insights for safety and combustion applications. This study presents the first CFD-based reproduction of the full methane flame stability curve, validating model reliability across a wide pressure range and providing a predictive tool for future applications, including the assessment of flame stability in methane‑hydrogen mixtures.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"275 ","pages":"Article 108249"},"PeriodicalIF":7.2,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced artificial nitrogen fixation into ammonia via CNT-modified BiFeO3-TiO₂ heterojunction 碳纳米管修饰bifeo3 - tio2异质结增强人工固氮入氨

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-06-05 DOI: 10.1016/j.fuproc.2025.108256

Elnaz Fekri , Mir Saeed Seyed Dorraji , Morteza Vahedpour

{"title":"Enhanced artificial nitrogen fixation into ammonia via CNT-modified BiFeO3-TiO₂ heterojunction","authors":"Elnaz Fekri , Mir Saeed Seyed Dorraji , Morteza Vahedpour","doi":"10.1016/j.fuproc.2025.108256","DOIUrl":"10.1016/j.fuproc.2025.108256","url":null,"abstract":"<div><div>Photocatalytic ammonia synthesis from nitrogen and water is a promising avenue for energy development due to its potential for sustainable production. In this study, the BiFeO<sub>3</sub>-TiO<sub>2</sub>-CNT nanocomposite, produced via a facile sol-gel and hydrothermal method (with and without CNTs), effectively converts N<sub>2</sub> into ammonia, a modern, sustainable and H-based fuel. The optimized composite, BFO-10 %TiO₂-CNT, exhibited a remarkable ammonia production rate of 150.8 μmol/g·h under ambient conditions, exceeding the performance of other ratios. CNT inclusion enhanced the photocatalytic performance. The superiority of BiFeO<sub>3</sub>-TiO<sub>2</sub>-CNT nanocomposite solar energy materials was explained in terms of CNT's ability to increase the photocatalyst surface area and effective interaction with N<sub>2</sub> molecules and the positive effect on photon absorption. The BiFeO<sub>3</sub>–10 %TiO<sub>2</sub>-CNT nanocomposite showed significantly better photocatalytic performance than other combinations. This optimized composite produced more NH<sub>3</sub> than BiFeO<sub>3</sub> or TiO<sub>2</sub> alone. A proposed charge transfer mechanism explains the enhanced N<sub>2</sub> fixation into ammonia solar fuel.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"275 ","pages":"Article 108256"},"PeriodicalIF":7.2,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of covalent bond cleavage and free radical behavior during the heating process in direct coal liquefaction of Naomaohu and Shangwan coals 直毛湖煤和上湾煤直接液化加热过程中共价键裂解和自由基行为的对比分析

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-06-04 DOI: 10.1016/j.fuproc.2025.108255

Huina Xu , Xiaodong Zhou , Ning Zhen , Xuelong Yin , Ting Liu , Yakun Tang , Jingmei Liu , Lang Liu , Fengyun Ma

{"title":"Comparative analysis of covalent bond cleavage and free radical behavior during the heating process in direct coal liquefaction of Naomaohu and Shangwan coals","authors":"Huina Xu , Xiaodong Zhou , Ning Zhen , Xuelong Yin , Ting Liu , Yakun Tang , Jingmei Liu , Lang Liu , Fengyun Ma","doi":"10.1016/j.fuproc.2025.108255","DOIUrl":"10.1016/j.fuproc.2025.108255","url":null,"abstract":"<div><div>The cleavage of covalent bonds and the generation of radicals play a crucial role in product distribution during direct coal liquefaction (DCL). This paper systematically investigates the mechanisms of covalent bond cleavage and the behavior of free radical generation for Naomaohu (NMHC) and Shangwan (SWC) coals during the DCL process. The concentrations of eight typical covalent bonds in raw coal and in the solid products Asphaltene (ASP) and Residue (Re) were quantified using <sup>13</sup>C NMR, while information on free radicals was obtained through GC–MS and GC analyses. The results indicate that NMHC contains a higher concentration of easily cleavable covalent bonds, such as C<sub>al</sub>-O and C<sub>al</sub>-C<sub>al</sub>, endowing it with superior reactivity compared to SWC. During the heating process, the breaking rate of C<sub>al</sub>-C<sub>al</sub> bonds in the ASP<sub>NMHC</sub> and Re<sub>NMHC</sub> being 3.0 times higher than those in SWC. Additionally, the proportion of aromatic radicals in Oil<sub>NMHC</sub> is 19.1 % lower than that in Oil<sub>SWC</sub>. This study systematically investigates the differences in reactive behavior between NMHC and SWC, emphasizing the core chemical reactions involved in DCL. It provides a theoretical foundation for developing an efficient direct liquefaction process for NMHC, oil-rich coal.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"275 ","pages":"Article 108255"},"PeriodicalIF":7.2,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental evaluation of the influence of blends of aviation fuel with RME on the performance of an engine with a common-rail power system 航空燃油与RME混合对共轨动力系统发动机性能影响的实验研究

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-06-03 DOI: 10.1016/j.fuproc.2025.108254

Dziubak Tadeusz , Karczewski Mirosław , Grzegorz Chmaj

{"title":"Experimental evaluation of the influence of blends of aviation fuel with RME on the performance of an engine with a common-rail power system","authors":"Dziubak Tadeusz , Karczewski Mirosław , Grzegorz Chmaj","doi":"10.1016/j.fuproc.2025.108254","DOIUrl":"10.1016/j.fuproc.2025.108254","url":null,"abstract":"<div><div>This paper presents original experimental research aimed at determining the effect of blends of aviation fuel with plant-based fuels on the useful parameters and exhaust gas composition of a compression-ignition engine with a common-rail (CR) tray power system. Original results were obtained for the parameters of an engine fueled with six fuels differing in chemical composition: the base fuel (F-54 diesel), F-34 aviation fuel, and four blends formed from F-34 fuel and RME (Rape Methyl Ester - rapeseed oil fatty acid methyl esters) with different weight percentages in the blend. Studies of blends of jet fuel with biocomponents in a wide range of shares in military fuel applications are not found in the available literature. The performance of the tested engine changed significantly. A decrease in useful power of about 3 % was obtained when the engine was powered by aviation fuel, compared to an engine powered by diesel fuel. For mixtures of aviation fuel F-34 with RME, the decrease is 5–10 %, depending on the content of RME in the mixture. Specific fuel consumption is higher for blends with methyl esters, and the increase is proportional to the RME content in the blend, ranging from 6 to 12 % depending on the proportion of RME, resulting in increased fuel demand. Supplying the engine with mixtures of F-34 fuel with RME resulted in an increase in average CO<sub>2</sub>, CO and HC emissions in the range of 12–18 %. The addition of RME to F-34 fuel resulted in an almost 3-fold reduction in smoke opacity compared to powering an F-54 engine, a phenomenon that is very beneficial from an environmental perspective. It is possible to use mixtures of F-34 jet fuel with RME to power modern internal combustion engines with common-rail power systems, which expand the fuel range during armed conflicts.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"275 ","pages":"Article 108254"},"PeriodicalIF":7.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co-pyrolysis of polymers: Recent advances, challenges and perspectives 聚合物共热解：最新进展、挑战和展望

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-05-31 DOI: 10.1016/j.fuproc.2025.108239

Ningxin Zhao , Sze Shin Low , Chung Lim Law , Tao Wu , Cheng Heng Pang

{"title":"Co-pyrolysis of polymers: Recent advances, challenges and perspectives","authors":"Ningxin Zhao , Sze Shin Low , Chung Lim Law , Tao Wu , Cheng Heng Pang","doi":"10.1016/j.fuproc.2025.108239","DOIUrl":"10.1016/j.fuproc.2025.108239","url":null,"abstract":"<div><div>In recent decades, the use of polymers, including plastics and tires, has dramatically increased. Large quantities of plastic and tire waste are generated and enter the environment, causing long-lasting ecological problems for mankind because they are extremely difficult to degrade naturally. It is imperative to find a solution to handle and recycle waste plastics and tires. <em>Co</em>-pyrolysis of polymers with biomass, coal and other materials is a promising method for recovering polymers and producing fuels and other value-added materials. This review focuses on various types of polymer co-pyrolysis, such as plastic-biomass, plastic-coal, tire-biomass, tire-coal, and plastic-tire co-pyrolysis. The study pays attention to the kinetics calculation and synergistic effects of co-pyrolysis. Furthermore, the influence of factors such as temperature, reactants, and catalysts on the co-pyrolysis process is discussed. The study also delves into the solid, liquid, and gaseous products of co-pyrolysis and explores potential applications. Additionally, the application of machine learning in co-pyrolysis research is highlighted. The goal is to provide viable pathways for the efficient recycling of polymers, enhance waste management, and achieve synergistic effects in energy and value-added product recovery.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"274 ","pages":"Article 108239"},"PeriodicalIF":7.2,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The co-combustion and pollutant emission characteristics of lignite and lake sediment 褐煤与湖泊沉积物共燃及污染物排放特征

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-05-31 DOI: 10.1016/j.fuproc.2025.108240

Xinyu Zheng , Manxia Shang , Bowen Zhang , Yunmei Li , Suilin Wang , Zhong Huang

{"title":"The co-combustion and pollutant emission characteristics of lignite and lake sediment","authors":"Xinyu Zheng , Manxia Shang , Bowen Zhang , Yunmei Li , Suilin Wang , Zhong Huang","doi":"10.1016/j.fuproc.2025.108240","DOIUrl":"10.1016/j.fuproc.2025.108240","url":null,"abstract":"<div><div>Lake sediment is a high moisture solid waste that carries a large amount of water pollutants, significantly impacting the environment and urban landscape. The efficient management of lake sediment has emerged as a critical challenge requiring immediate attention. This paper focuses on the characteristics of co-combustion and its pollutant emissions. The combustion characteristics of mixed combustion of lake sediment and coal in different proportions were obtained by the thermogravimetric method. Experiments elucidated the influence of diverse factors on the variability of NO and SO₂ concentrations. The remaining bottom residue of the reaction and the reasons for the changes in emission concentration are analysed from a microscopic perspective. Results indicate that the appropriate proportion (<20 %) of mixed lake sediment promotes coal combustion. NO and SO<sub>2</sub> decrease with increased bed temperature, lake sediment mixing ratio (5 %–15 %), and particle size. As the bed temperature increases, the particle surface melts, reducing the pore structure and reaction sites, thereby reducing the generation of pollutants. When the mixing ratio exceeds 15 %, NO increases while SO<sub>2</sub> decreases. Calcium based substances have little catalytic effect on NO, but are still effective for SO<sub>2</sub>. Larger particles will promote the decomposition of NO on their surface.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"274 ","pages":"Article 108240"},"PeriodicalIF":7.2,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144184666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and turbine engine testing of coconut oil-based biojet fuel 椰子油基生物喷气燃料的开发与涡轮发动机试验

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-05-30 DOI: 10.1016/j.fuproc.2025.108252

Anna Yakovlieva , Rudolf Andoga , Ladislav Főző , Stepan Zubenko , Serhii Konovalov

{"title":"Development and turbine engine testing of coconut oil-based biojet fuel","authors":"Anna Yakovlieva , Rudolf Andoga , Ladislav Főző , Stepan Zubenko , Serhii Konovalov","doi":"10.1016/j.fuproc.2025.108252","DOIUrl":"10.1016/j.fuproc.2025.108252","url":null,"abstract":"<div><div>The increasing demand for sustainable aviation fuels, along with the need to decarbonize the aviation sector, has led to ongoing extensive research into renewable jet fuels. Despite notable progress, there remains a need to expand the range of feedstocks, optimize technological pathways, and scale up new fuel production. The authors propose developing novel biojet fuel in response to these challenges. The work presents complex research on the synthesis of renewable fuel components, the study of basic physical-chemical properties of new biojet fuel, and the assessment of gas turbine engine operation parameters to validate the hypothesis that this fuel can be used for jet engine propulsion with the required efficiency. Coconut oil ethyl esters (COEE) used as a renewable component were synthesized via esterification of coconut oil with ethanol and refined via vacuum distillation. The choice of the feedstock and production method allowed the production of a product with a high level of purity (97.4 %) of COEE, a light molecular weight composition (C6-C18) close to conventional jet fuel, and a low content of unsaturated fatty acids (below 5 %). The study of basic physical-chemical properties of biojet fuels containing traditional jet fuel and 10 %, 20 %, and 30 % of COEE demonstrated the rise of density by 1.01–2.53 %, viscosity by 9.79–32.26 %, freezing point by 10.34–33.51 %, and reduction of combustion heat by 1.69–5.07 %. Performance tests of a small gas turbine engine with conventional and biojet fuels demonstrated an overall stable engine start-up and operation. While no negative impact on operating parameters was found, the rise of the engine's specific fuel consumption was observed at all operation regimes: by 2.58 % 4.81 %, and 7.42 % for biojet fuel with 10 %, 20 %, and 30 % of COEE, respectively.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"274 ","pages":"Article 108252"},"PeriodicalIF":7.2,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of gas sorption and pore structure alterations of sludge bio-seeding coals: an experimental study 污泥生物种子煤吸附特性及孔隙结构变化的实验研究

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-05-29 DOI: 10.1016/j.fuproc.2025.108251

Elham Rahimi, Xinxin He, Shimin Liu

{"title":"Characterization of gas sorption and pore structure alterations of sludge bio-seeding coals: an experimental study","authors":"Elham Rahimi, Xinxin He, Shimin Liu","doi":"10.1016/j.fuproc.2025.108251","DOIUrl":"10.1016/j.fuproc.2025.108251","url":null,"abstract":"<div><div>This study examines the impact of sludge-based bio-treatment on gas sorption and pore structure modification in subbituminous and lignite coals, aiming to enhance methane-rich biogas production from coal waste. We previously reported the promising results for biogas production from batch reactors using coal as the primary feedstock and sludge as the bio-seeds. In this study, methane and CO<sub>2</sub> gas sorption experiments, along with pore structure characterization, were performed to quantify the changes in gas sorption capacity induced by bio-reaction and modifications to the pore structure. The results reveal significant capacity increases post-bio-treatment, with CH₄ adsorption improving by 40 % for subbituminous coal and 42 % for lignite, and CO₂ adsorption increasing by 53 % and 24 %, respectively. The pore structure characterization confirmed enhanced pore volume and surface area, suggesting active microbial-induced modifications, primarily on macropore surfaces. These changes contribute to improved gas sorption and present promising implications for bio-enhanced coalbed methane recovery and CO₂ sequestration. This study affirmatively confirmed that bio-reaction induced microbial activities actively modified the pore structure. Future investigations will be needed to quantify the localized aqueous-gas equilibrium for optimizing sludge bio-seeding coal conversion.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"274 ","pages":"Article 108251"},"PeriodicalIF":7.2,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of fly ash components on the performance of recycled copper-based oxygen carriers for chemical looping combustion 粉煤灰组分对化学环燃烧用再生铜基氧载体性能的影响

IF 7.2 2区工程技术

Fuel Processing Technology Pub Date : 2025-05-28 DOI: 10.1016/j.fuproc.2025.108236

Logan R. Hughey, Kevin J. Whitty

{"title":"Influence of fly ash components on the performance of recycled copper-based oxygen carriers for chemical looping combustion","authors":"Logan R. Hughey, Kevin J. Whitty","doi":"10.1016/j.fuproc.2025.108236","DOIUrl":"10.1016/j.fuproc.2025.108236","url":null,"abstract":"<div><div>Copper-based, silica-supported oxygen carriers were prepared with low concentrations of metal oxide impurities representing solid-fuel ash components that would co-leach when using nitric acid to recover copper oxide from spent fluidized bed materials in a solid-fuel-fired chemical looping system. Oxygen carriers were prepared to contain approximately 30 wt% CuO on a high surface area silica support with metal oxide impurity-to-CuO ratios of 1:100. Both single- and multi-impurity materials were considered with impurities being introduced as aqueous nitrates during synthesis. Many of the prepared oxygen carriers exhibited lower oxygen transport capacity than expected due to support-CuO interactions. Multi-impurity oxygen carriers displayed the best performance, even better than material containing only CuO, and the presence of alkali salts was determined to be important for enhancing oxygen transport capacity and reaction rates. All oxygen carrier materials were highly reactive, with oxidation and reduction achieving near completion within two minutes at 950 °C. This study concludes that the presence of impurities is not detrimental to oxygen carrier performance and a simple, low-cost oxygen carrier recycle process could be viable. With such a recycle process, it would be possible to reduce the make-up cost associated with the loss of oxygen carriers due to attrition, thus improving economics of chemical looping combustion.</div></div>","PeriodicalId":326,"journal":{"name":"Fuel Processing Technology","volume":"274 ","pages":"Article 108236"},"PeriodicalIF":7.2,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0