Energy & Fuels最新文献

{"title":"Surface Affinity Modification of High-Silica MFI Zeolites for Preferential Ethane Capture over Ethylene","authors":"Feng Xiong,&nbsp;Quanli Ke*,&nbsp;Mei Lu,&nbsp;Sheng Wang,&nbsp;Bingzhi Yi,&nbsp;Xiaopo Niu,&nbsp;Pengyun Pan,&nbsp;Guonan Fang,&nbsp;Ruina Zhang,&nbsp;Guokai Cui,&nbsp;Bo Zhao* and Hanfeng Lu*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0402410.1021/acs.energyfuels.4c04024","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04024https://doi.org/10.1021/acs.energyfuels.4c04024","url":null,"abstract":"<p >The highly efficient separation of C₂H₆/C₂H₄ meets great challenges due to their similar physicochemical properties and molecular dimension. Herein, pure silica MFI zeolite was incorporated with different heteroatoms (Mn, Cu, Ni, and Zn) to achieve appropriate surface polarity. The results showed that the Mn sites in the zeolite frameworks could enhance the affinity toward both C₂H₆ and C₂H₄. Additionally, the P modification over Mn-containing MFI zeolites was conducted to restrict the electron transfer effect of Mn^δ+ species. Notably, with the P content increased, the C₂H₄-favored separation behavior was surprisingly reversed to the C₂H₆-favored separation behavior. The isosteric adsorption heat and desorption active energy further confirmed the superior surface affinity of C₂H₆ to C₂H₄ on the Mn- and P-functionalized MFI zeolite. Finally, the X-ray photoelectron spectroscopy spectra, Raman spectra, and grand canonical Monte Carlo simulations further proved that the bonding between P and Mn could decrease the structural defects and weaken the electron transfer of Mn^δ+ species within the functionalized zeolite, which exhibited significant impacts on the preferential capture of C₂H₆ versus C₂H₄ molecules. As such, an optimal trade-off between the dynamic C₂H₆/C₂H₄ separation selectivity and C₂H₆ uptake was realized by the cooperative strategy of Mn incorporation and P (triphenylphosphine) modification.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23654–23663 23654–23663"},"PeriodicalIF":5.2,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical Simulation of Natural Gas Hydrates Production on the Alaska North Slope under Depressurization Combined with Thermal Stimulation","authors":"Chao Wu,&nbsp;Xin Xin*,&nbsp;Tianfu Xu,&nbsp;Yaobin Li,&nbsp;Yilong Yuan and Huixing Zhu,&nbsp;","doi":"10.1021/acs.energyfuels.4c0476610.1021/acs.energyfuels.4c04766","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04766https://doi.org/10.1021/acs.energyfuels.4c04766","url":null,"abstract":"<p >The decomposition of natural gas hydrates (NGH) is a process controlled by both temperature and pressure conditions. The pressure drop leads to the dissociation of hydrates, which absorb heat during decomposition, also causing a decrease in the reservoir temperature. It is adverse to long-term natural gas production. Therefore, while reducing the pressure during hydrate exploitation, attention should be paid to replenishing the reservoir heat. Wellbore electric heating can directly supplement the heat around the production well, while avoiding the formation of secondary hydrates. In this article, the Alaska North Slope is chosen as the study field. The high porosity and permeability of the hydrate reservoir are conducive to simulating heat and mass transfer. Based on the geological data, a 3D layered heterogeneous geological model was constructed. The horizontal well was arranged in the upper part of the hydrate layer. The effects of initial depressurization, heating power, and heating well section arrangement on the natural gas production behavior were studied. At the same time, the evolution laws of the seepage parameters under different production schemes were analyzed. The results show that: (1) The wellbore heating can effectively promote NGH production. When the heating power was 10 kW, the <i>V</i>_<i>P</i> increased by 24.8%. (2) Depressurization plays a dominant role in the combined exploitation method. (3) Higher heating power causes a larger range of hydrate decomposition zone. When the heating power changed from 5 kW to 40 kW, the <i>V</i>_<i>P</i> increased by 40.3%. (4) The placement of the heating well section is related to NGH productivity. When the length of the heating well section changed from 50 m to 100 m, the <i>V</i>_<i>P</i> increased by 6.6%. When the location of the heating well section changed from 0 to 50 m to 100–150 m, the <i>V</i>_<i>P</i> increased by 6.9%. (5) The EER of production is influenced by the initial pressure drop, heating power, and layout of the heating well section.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23519–23534 23519–23534"},"PeriodicalIF":5.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methane Hydrate Formation in the Presence of Magnetic Fields: Laboratory Studies and Molecular-Dynamics Simulations","authors":"Mengdi Pan*,&nbsp;Bastien Radola,&nbsp;Omid Saremi,&nbsp;Christopher C. R. Allen and Niall J. English,&nbsp;","doi":"10.1021/acs.energyfuels.4c0459610.1021/acs.energyfuels.4c04596","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04596https://doi.org/10.1021/acs.energyfuels.4c04596","url":null,"abstract":"<p >One of the enigmas associated with natural gas hydrates relates to their formation and stabilization under certain conditions. Given the ubiquity of methane hydrates in marine sediments and permafrost milieus, their environmental significance is clear. In this paper, we provide a comprehensive investigation on the formation process of methane hydrates in the presence of magnetic fields of various strengths, given the already-established environmental performance of the Earth’s magnetic field. Laboratory measurements were carried out with the support from molecular-dynamics simulations to glean insights into molecular scale mechanisms. Our findings revealed an inhibiting effect of magnetic fields on hydrate formation kinetics, which could be attributed to the strengthening of intermolecular interactions and the slowing of diffusion of water and methane molecules. The impact of magnetic fields appeared to be mostly kinetic in nature with little impact on hydrate stability. This clarification may offer a fresh perspective on the dynamics of liquid–solid transformation during the hydrate formation process, signaling critical interests in both natural and industrial applications.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23497–23506 23497–23506"},"PeriodicalIF":5.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.energyfuels.4c04596","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Woodpecker-Inspired Assembly Methodology for a Proton Exchange Membrane Fuel Cell with Uniform Contact Pressure on the Bipolar Plate","authors":"Biyu Pan,&nbsp;Dong Guan*,&nbsp;Rui Wang,&nbsp;Zhen Chen and Ting Chen,&nbsp;","doi":"10.1021/acs.energyfuels.4c0434310.1021/acs.energyfuels.4c04343","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04343https://doi.org/10.1021/acs.energyfuels.4c04343","url":null,"abstract":"<p >The contact pressure between bipolar plates in proton exchange membrane fuel cells (PEMFCs) is nonlinearly distributed, because of the bolt assembly. This nonlinearity in the contact pressure distribution can be amplified under vibration, and the convex point on the rough surface of a membrane electrode assembly (MEA) is equivalent to a Hertz contact. Under the friction effect, a transient current is generated and the bipolar plate corrodes suddenly, resulting in hydrogen and oxygen leakage. This study proposes a woodpecker inspired assembly PEMFC based on a hyoid-shaped wave spring (WIA-PEMFC), to achieve uniform contact pressure on the bipolar plates under both static and dynamic conditions. Then, the effectiveness of WIA-PEMFC was verified via finite element simulations and experiments. Compared with that of conventional assembly methods, the nonuniformity of the contact pressure can be reduced by up to 60%. Additionally, the electrical performance of WIA-PEMFC was also tested, and the results revealed a significant improvement in the electrical performance. Moreover, WIA-PEMFCs boast high reliability, low cost, and zero emissions due to the lack of energy supply equipment, which can facilitate the engineering development of PEMFC stacks with high reliability and high efficiency.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23754–23767 23754–23767"},"PeriodicalIF":5.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic Upgrading of Lignocellulosic Biomass-Derived Compounds Using Hierarchical ZSM-5 Zeolites","authors":"Sancler C. Vasconcelos,&nbsp;Vinicius Rossa,&nbsp;Daniel G. S. Quattrociocchi,&nbsp;Vinicius G. C. Madriaga,&nbsp;Maria Clara O. Ribeiro,&nbsp;Saulo B. Pinheiro,&nbsp;Rodrigo D. dos Santos,&nbsp;Braulio S. Archanjo,&nbsp;Ernesto A. Urquieta-González,&nbsp;André V. H. Soares,&nbsp;Fabio B. Passos,&nbsp;Rajender S. Varma* and Thiago M. Lima*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0400010.1021/acs.energyfuels.4c04000","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04000https://doi.org/10.1021/acs.energyfuels.4c04000","url":null,"abstract":"<p >Although fossil fuels are the primary energy source presently, their usage brings concerns related to the emissions of pollutants that pose risks to both human and environmental health. In this context, lignocellulosic biomass as a renewable feedstock stands out as a viable carbon-neutral energy source since it can be converted into fuel additives and several valuable products. This paper evaluated hierarchical ZSM-5 zeolites (Si/Al ratios of 23, 38, and 48) for the conversion of furfural into isopropyl levulinate. The hierarchical material was obtained through an alkaline treatment and characterized with X-ray diffraction, X-ray fluorescence, N₂ physisorption, TPD-NH₃, and Fourier transform infrared spectroscopy . Catalytic assessments and a factorial experimental design (2³) were performed, and, as a result, a FUR conversion above 90% was observed, with an apparent obtained yield of 85% for the treated Z23DS zeolite. The results indicated that the catalyst acidity, the reaction temperature, and the amount of catalyst played significant roles in conversion and selectivity values. Furthermore, the hierarchical Z23DS zeolite promoted the aldol condensation of 5-hydroxymethylfurfural with acetone into sustainable aviation fuel precursors.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23823–23835 23823–23835"},"PeriodicalIF":5.2,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.energyfuels.4c04000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review of the Mechanisms and Control Technologies of Coal and Gas Outbursts: Recent Advances and Future Perspectives","authors":"Hui-yong Niu,&nbsp;Hao-liang Zhu*,&nbsp;Gong-da Wang*,&nbsp;Hong-yu Pan,&nbsp;Si-wei Sun,&nbsp;Xiao-dong Yu,&nbsp;Xi Yang and Jia-xing He,&nbsp;","doi":"10.1021/acs.energyfuels.4c0402810.1021/acs.energyfuels.4c04028","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04028https://doi.org/10.1021/acs.energyfuels.4c04028","url":null,"abstract":"<p >Coal and gas outbursts (called outbursts for short) pose severe risks to the safety of underground personnel, and preventing these incidents remains a global challenge. To enhance long-distance prediction accuracy, improve permeability measures for effective outburst control, and achieve precise prevention strategies, this study reviews the development of outburst mechanisms. It focuses particularly on monitoring, early warning, and key technologies based on geophysical methods. The analysis provides a summary of regional and localized prevention methods, detailing their principles, applicable scopes, strengths, weaknesses, and current research status. Findings indicate low accuracy in monitoring data and frequent false alarms, underscoring the urgent need to establish more comprehensive theory and technology systems for outburst prevention. In response, this study suggests a future direction: developing coupled disaster models suited for deep, complex, and heterogeneous strata, replacing empirical indicators with theoretical indicators, and refining these indicators based on specific coal seam characteristics. Additionally, we recommend enhancing the precision detection of small structures, identifying high-stress areas, and standardizing extraction evaluation protocols. By integrating digital twin technology with numerical simulations for real-time monitoring of complex physical fields, we aim to enable advanced early warning systems for outbursts.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23230–23245 23230–23245"},"PeriodicalIF":5.2,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Charge Storage Performance and Electrocatalytic Oxygen Evolution Reaction Activity of Self-Grown Iron–Cobalt-Doped Nickel Oxide Nanoplates: An Example of the Synergistic Effect","authors":"Ahmed H. Al-Naggar,&nbsp;Vijaykumar V. Jadhav*,&nbsp;Shoyebmohamad F. Shaikh*,&nbsp;Raisuddin Ali and Rajaram S. Mane*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0483210.1021/acs.energyfuels.4c04832","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04832https://doi.org/10.1021/acs.energyfuels.4c04832","url":null,"abstract":"<p >The synergistic electrochemical properties of a rational design transition metal oxide can improve its efficiency. However, the optimal synergistic effect of transition metal oxide nanostructures toward energy storage and conversion is still unsatisfactory. Herein, a simple, efficient wet chemical synthesis method is promoted for the incorporation of iron and cobalt ions into the nickel oxide matrix as (Fe–Co-doped NiO), with excellent high energy storage and electrocatalytic OER performance. Importantly, the correlation between varying amounts of Fe–Co-doped NiO electrodes and catalysts with different surface morphologies, crystallographic phases, and electrochemical activities was investigated. Benefiting from strong synergistic action, rich oxygen vacancies, oxidation behavior, transferred ion diffusion, and morphology, the 5 wt % Fe and Co-doped NiO electrode (5 wt % Fe–Co–NiO) exhibit a better specific capacitance of 5419.3 F g^–1 at a current density of 2 A g^–1, which is better than that of the pristine NiO (530.4 F g^–1). Similarly, a 5 wt % Fe–Co–NiO//5 wt % Fe–Co–NiO symmetric device provides a superb volumetric energy power density (47.9 Wh kg^–1/545.8 WK g^–1). It also demonstrates durable redox cycle life with 92.86% retention after 10,000 redox cycles scanned at a current density of 10 A g^–1. At the same time, a panel consisting of 42 red light-emitting diodes (LEDs) with a voltage of approximately 1.5 V has been successfully illuminated for five min, exhibiting a high level of illumination intensity. This was accomplished by connecting two symmetric supercapacitor devices in series. This demonstrates the significance of the as-grown 5 wt % Fe–Co-doped NiO electrode for commercial applications. Furthermore, compared to the pristine NiO (680 mV and 146 mV s^–1) catalyst, the 5 wt % Fe–Co–NiO electrocatalyst shows impressive intrinsic activity for the oxygen evolution reaction with an ultralow overpotential of 210 mV at 50 mA cm^–2 and a small Tafel slope of 85.6 mV dec^–1, approving the importance of bimetallic ion doping in water splitting activity. Additionally, the 5 wt % Fe–Co-doped NiO nanostructured catalyst presents the highest turn-on-frequency (1.64 s^–1) and electrochemically active surface area (84.75 mF cm^–2) values, thus indicating the specific efficacy of each active site. Also, a 5 wt % Fe–Co-doped NiO catalyst has maintained steady performance for more than 115 h. This work offers a deep understanding of the impact of optimal bimetallic doping through the synergistic effect on energy storage and water splitting performance of the NiO electrode/catalyst for commercial practices.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23699–23712 23699–23712"},"PeriodicalIF":5.2,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-Pressure CO2 Solubility in Crude Oil and CO2 Miscibility Effects on Oil Recovery Performance in Low-Permeability Reservoirs","authors":"Guo-Tao Fu,&nbsp;Zi-Gang Zheng,&nbsp;Yong-Qiang Zhang,&nbsp;Yu-Ting Dai,&nbsp;Dan-Chen Li,&nbsp;Jie Zhan,&nbsp;Chun-Ning Gao* and Li-Wu Fan*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0504010.1021/acs.energyfuels.4c05040","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c05040https://doi.org/10.1021/acs.energyfuels.4c05040","url":null,"abstract":"<p >The solubility of CO₂ in crude oil is a crucial parameter that remarkably influences the flood performance of CO₂ for low-permeability reservoirs. However, there is a considerable lack of data on CO₂ solubility in crude oil under high-pressure conditions above 30 MPa in the existing literature, leaving a significant data gap. To address this deficiency, we measured the CO₂ solubility in crude oil under sparsely explored high-pressure conditions (10–50 MPa) and across a broad temperature range (55–100 °C). Our findings revealed a nonlinear saturation trend in pressure dependence, deviating from the near-linear trends reported in prior studies. Using these data, we developed a novel empirical correlation for the CO₂ solubility in crude oil prediction with a deviation of less than 10%, offering improved reliability for high-pressure applications. Additionally, nuclear magnetic resonance (NMR)-based CO₂ flooding experiments provided new insights into the degree of oil utilization and dynamic production performance across different miscibility states. CO₂ near-miscible flooding was recommended as a more viable option in practical applications compared to fully miscible flooding owing to its advantages of good oil recovery enhancement, low propensity for asphaltene precipitation, and relatively low injection cost. This study uniquely bridges the data gap in the existing literature regarding high-pressure CO₂ solubility in crude oil and provides scientific guidance for the exploitation of CO₂ flooding in low-permeability reservoirs.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23433–23446 23433–23446"},"PeriodicalIF":5.2,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances, Applications, and Perspectives of Machine Learning Approaches in Predicting Gas Hydrate Phase Equilibrium","authors":"Haonan Li,&nbsp;Huiru Sun,&nbsp;Jing Chen,&nbsp;Bingbing Chen,&nbsp;Dongliang Zhong* and Mingjun Yang*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0492410.1021/acs.energyfuels.4c04924","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04924https://doi.org/10.1021/acs.energyfuels.4c04924","url":null,"abstract":"<p >Given the urgent environmental issues posed by rising carbon emissions and a global temperature increase, the modern world must develop effective solutions. The deployment of technology associated with hydrates represents a viable strategy for the mitigation of environmental degradation. This is achieved by employing methane hydrates as an alternative, more environmentally friendly energy resource and utilizing carbon dioxide hydrates for carbon sequestration and storage. In the study of hydrates, accurately determining hydrate phase equilibrium conditions is crucial for understanding and controlling the gas hydrate formation and stability. With the rise of machine learning, artificial intelligence algorithms have become increasingly relevant to hydrate research, particularly in the development of predictive models for hydrate phase equilibrium. These algorithms offer both high feasibility and a necessity in addressing complex hydrate-related problems. This paper focuses on the application of machine learning, specifically the Gradient Boosted Regression Tree (GBRT) algorithm, to predict hydrate phase equilibrium conditions. The rationale for selecting GBRT, along with the model construction process, training, and validation methods, is discussed in detail. This integration of hydrate research and machine learning techniques promises to advance our predictive capabilities and optimize the extraction and utilization of hydrates as a sustainable energy resource.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23320–23335 23320–23335"},"PeriodicalIF":5.2,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early Detection and Prevention of Two-Phase Flow-Induced Vibrations in CO2 Transport Pipelines Using a Flow Control System Coupled with a Neural Network Model","authors":"Geonwoo Jeong,&nbsp;Sunghyun Park,&nbsp;Insun Park,&nbsp;Woojin Go and Yutaek Seo*,&nbsp;","doi":"10.1021/acs.energyfuels.4c0444010.1021/acs.energyfuels.4c04440","DOIUrl":"https://doi.org/10.1021/acs.energyfuels.4c04440https://doi.org/10.1021/acs.energyfuels.4c04440","url":null,"abstract":"<p >This study addresses the challenge of two-phase flow-induced vibrations (FIVs) in CO₂ transport pipelines, which are crucial for safe operation of the pipelines and processing facilities for carbon capture and storage (CCS) projects. The formation of two-phase flow due to phase changes may induce vibrations of pipelines, especially in riser sections of offshore platforms. Conventional design strategies to mitigate FIVs may not be applicable to the CO₂ transport pipelines in the case of reuse of the existing infrastructures. This study investigates the performance of a flow control system coupled with a machine learning algorithm for early detection and prevention of FIVs. Experiments were conducted using a flow loop using air and water to simulate two-phase flow and to obtain both vibration and pressure fluctuation data, and then those data were used to develop and train an artificial neural network (ANN) model. This ANN model effectively identifies two-phase unstable flows (USFs) and initiates an internal model control logic to adjust the valve opening of the flow control system. Upon adjusting the valve opening, stable two-phase flow was obtained. The obtained results demonstrated that early detection and timely control should reduce the maximum pressure and the duration of USFs. The control system was also applied to the simulation model for the offshore CO₂ transport pipeline for the CCS project in the East Sea of Korea and proved its effectiveness to minimize the impact of two-phase USF. These results suggest that implementing this ML-based control system enhances the safety and reliability of CO₂ transport pipelines, making CCS projects more economically viable by utilizing existing infrastructure.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 24","pages":"23585–23599 23585–23599"},"PeriodicalIF":5.2,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}