Article
Chemistry, Physical
Arman Namaee-Ghasemi, Hassan Shokrollah-zadeh Behbahani, Shahin Kord, Amin Sharifi
Summary: Low salinity/Smart water injection (LSWI) is a promising enhanced oil recovery method that alters the wettability of rocks and improves recovery rates. The injection of different water compositions affects relative permeability curves and capillary pressure parameters, showing a strong correlation with injected salinity. The non-linear relationship between wettability and salinity highlights the critical threshold at 5000 ppm for the significant impact of LSWI.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Multidisciplinary
Fiki Hidayat, T. Mhd Sofyan Astsauri
Summary: This study applied a Machine Learning Algorithm based on Random Forest Regression to assess the parameters in the LSWI process and identified the most important parameters as Injection SO42- Composition, Formation Water SO(4)(2-)Composition, and Volume Injection.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Ilyas Khurshid, Imran Afgan
Summary: This study investigates the impact of water composition changes during engineered water injection on electrical properties and oil recovery from carbonates. The findings demonstrate the significant influence of formation temperature, sulfate concentration, and seawater dilution on electrical conductivity and electrical double layer thickness. High-temperature water injection is recommended to enhance ion mobility and stabilize the water film. Moreover, controlling sulfate ion concentration is crucial to prevent the formation and precipitation of calcium sulfate. The variation in electrical conductivity and electrical double layer thickness caused by seawater injection and dilution results in increased oil recovery by approximately 16-21% in the case study.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Physical
Rishabh Tripathi, Bidesh Kumar Hembram, Krishna Raghav Chaturvedi, Tushar Sharma, Vishnu Chandrasekharan Nair
Summary: This study investigates the effect of low salinity brines on the wettability alteration of carbonate rocks. The results show that gypsum has the largest impact on rocks containing both calcite and dolomite, while calcium sulfate has the largest impact on rocks containing only calcite. The presence of calcite and dolomite leads to less wettability alteration compared to rocks containing only dolomite, but higher temperatures and the presence of calcite can further improve oil recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Geosciences, Multidisciplinary
Zahra Negahdari, Mohammad R. Malayeri, Mojtaba Ghaedi, Sabber Khandoozi, Masoud Riazi
Summary: This study explores the gradual wettability alteration method during low-salinity water flooding and compares it with the instantaneous method. The results indicate that the differences between gradual and instantaneous wettability alteration are more noticeable at the early stage of injection, highlighting the importance of considering gradual wettability alteration in the early stages of low-salinity water flooding.
NATURAL RESOURCES RESEARCH
(2021)
Article
Chemistry, Physical
Mehdi Safari, Ali Rahimi, Raoof Gholami, Andrian Permana, Wee Siaw Khur
Summary: Low salinity water flooding is a method used in the EOR process to change the surface wettability and reduce interfacial tension. This study investigates the effects of ions on the surface wettability of shale rocks and the interfacial tension of brine/oil. It is found that decreasing the concentration of monovalent ions changes the wettability of shale from neutral wet to weakly water wet, while decreasing the concentration of divalent ions induces an oil wet system. Time and salt ion concentration have significant impacts on shale wettability and interfacial tension.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
A. Almeida da Costa, J. Mateo, R. Patel, J. J. Trivedi, J. B. P. Soares, P. S. Rocha, G. Costa, M. Embirucu
Summary: Low salinity water injection (LSWI) has been investigated as an enhanced oil recovery method in sandstone reservoirs in Brazil. The study found that LSWI led to increased oil recovery, Ca++ desorption from the rock surface, and a substantial pH increase in the effluent. Zeta potential measurements showed that a thicker water film was formed on the rock and oil surface with brine dilution during LSWI. The study identified key parameters such as Na+ and Ca++ concentration, and water injection rate as important factors in the LSWI process.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Seyedbehzad Hosseinzadehsadati, Ali Akbar Eftekhari, Hamidreza M. Nick
Summary: Modified salinity water flooding can enhance oil mobility and recovery. Ignoring the impact of saturation history on relative permeability leads to inaccurate prediction of oil recovery. By proposing three models, we demonstrate the interplay of wettability alteration, hysteresis effect, and fluid flow in porous media. Our simulations indicate that considering hysteresis alongside wettability alteration can better quantify the retention of mobilized oil. Additionally, measuring secondary drainage and imbibition saturation curves is crucial for field scale simulation of modified salinity water flooding.
Article
Energy & Fuels
Mehdi Zallaghi, Ali Reza Khaz'ali
Summary: The study investigates the efficiency of a mixture of cationic and nonionic surfactants combined with smart water for enhanced oil recovery in carbonate reservoirs. Through experiments and analysis, it demonstrates a strong synergy between low salinity water and surfactant for recovering oil from carbonate reservoirs, showing significant improvements in oil recovery.
Article
Engineering, Geological
Binh T. Bui
Summary: This study evaluates the effects of water injection on oil recovery in liquid-rich unconventional reservoirs using a new mass transport model and geomechanical model. The results show that osmosis significantly contributes to oil recovery from very low permeability shale matrix over a long time period, while shale swelling significantly reduces overall oil recovery. Water injection is not recommended for formations with swelling potential.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Engineering, Petroleum
Tianzhu Qin, Paul Fenter, Mohammed AlOtaibi, Subhash Ayirala, Ali AlYousef
Summary: Controlled-ionic-composition waterflooding can alter carbonate mineral wettability and improve oil recovery. Experimental results indicate that water with higher sulfate ion concentrations is more effective in displacing oil in carbonate rock samples.
Review
Energy & Fuels
Shijia Ma, Lesley A. James
Summary: Low salinity water injection (LSWI) and CO2 Water-Alternating-Gas (WAG) injection are cost-effective and environmentally friendly methods for oil recovery. The hybrid EOR method, CO2 low salinity (LS) WAG injection, shows potential in optimizing oil recovery and decreasing operational costs. However, the mechanism for increased recovery using this method is uncertain.
Article
Energy & Fuels
Nikoo Moradpour, Peyman Pourafshary, Davood Zivar
Summary: Enhanced oil recovery methods, such as low salinity water flooding and water alternating gas injection, when combined together, can effectively improve oil production by altering rock wettability and controlling fluid mobility. The synergistic effects of these methods result in increased ultimate oil recovery by enhancing displacement and mobilization of oil in the reservoir.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Fabio Bordeaux-Rego, Mehran Mehrabi, Alireza Sanaei, Kamy Sepehrnoori
Summary: The study aims to improve and validate a physically based model for predicting rock contact angles; a new surface complexation model is proposed considering the charge interactions among rock, oil, and brine; contact angles are estimated using disjoining pressure calculations and validated against experimental data in the literature.
Article
Energy & Fuels
Edward Andrews, Ann Muggeridge, Gaetano Garfi, Alistair Jones, Samuel Krevor
Summary: Changing the wetting state of rocks through low-salinity flooding can facilitate oil recovery, with 22% of oil being redistributed within the rock. However, this wetting alteration only leads to an additional recovery of three percentage points. Observations using X-ray scanning show how oil and brine redistribute in the pores of rocks in response to low-salinity flooding.
Article
Energy & Fuels
Ahmed S. Adila, Emad W. Al-Shalabi, Waleed Alameri
Summary: This paper investigates the effect of hybrid surfactant-LSWI/EWI on oil recovery from carbonate cores under harsh conditions through a numerical 2D simulation model. The results show that the hybrid surfactant-EWI can alter wettability and achieve higher oil recovery compared to other techniques. The study emphasizes the importance of surfactant adsorption and concentration for the hybrid surfactant-EWI technique.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Anas M. Hassan, Mohammed Ayoub, Mysara Eissa, Emad W. Al-Shalabi, Abdullah Al-Mansour, Abdulrahman Al-Quraishi
Summary: The contribution introduces a new hybrid enhanced oil recovery method called smart water-assisted foam (SWAF) process, which combines smart water and foam flooding techniques. This method has the potential to improve oil recovery from carbonate reservoirs by altering rock wettability and reducing interfacial tension.
Article
Energy & Fuels
Emad W. Al-Shalabi, Waleed Alameri, Anas M. Hassan
Summary: The low salinity polymer (LSP) based enhanced oil recovery (EOR) technique is garnering increased attention due to its potential to improve both displacement and sweep efficiencies. This study developed a coupled numerical model that integrates a reservoir simulation toolbox with a geochemical software to investigate the polymer-brine-rock interactions associated with LSP flooding. The model successfully captures the effects of polymer adsorption, salinity, and shear rate on polymer viscosity, and enables real-time tracking of the aqueous phase salinity and its impact on polymer rheological properties.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Review
Polymer Science
Anas M. Hassan, Emad W. Al-Shalabi, Mohammed A. Ayoub
Summary: This study investigates the feasibility of improving polymer displacement technology in high temperature, high salinity oil carbonate resources using optimized polymers and hybrid methods. The selected novel polymers exhibit stability and tolerance, whereas adding alkali-surfactant can enhance mobility control and reduce interfacial tension, thus increasing displacement efficiency.
Review
Energy & Fuels
Khaled Al-Azani, Sidqi Abu-Khamsin, Ridha Al-Abdrabalnabi, Muhammad Shahzad Kamal, Shirish Patil, Xianmin Zhou, Syed Muhammad Shakil Hussain, Emad Al Shalabi
Summary: This review outlines the behavior and mechanisms involved in surfactant-enhanced oil recovery, and introduces different evaluation methods and monitoring techniques.
Article
Energy & Fuels
Jamiu Oyekan Adegbite, Emad Walid Al-Shalabi
Summary: Engineered water injection (EWI) is a promising enhanced oil recovery technique, and its field-scale application in heterogeneous carbonate formations needs further investigation. Numerical research shows that EWI improves volumetric and displacement sweep efficiencies in carbonates, with secondary EWI outperforming other techniques. Increasing well injection pressure and sulfate concentration in the engineered water can reduce the observed delay in tertiary EWI.
Article
Energy & Fuels
Ding Xiong, Shehzad Ahmed, Waleed Alameri, Emad W. Al-Shalabi
Summary: Foam injection is a promising technology for controlling gas mobility in enhanced oil recovery (EOR) processes. This study investigates the use of different surfactants and their combinations to establish foam performance and its ability to displace residual oil in challenging carbonate formations. The betaine surfactant (B1235) showed superior foamability and stability, and was found to be the most effective in maintaining foam properties in the presence of crude oil. The optimum concentrations for B1235 were determined to be 0.25 wt% without crude oil and 0.5 wt% with crude oil. The betaine-based surfactant-stabilized foam demonstrated effective control of gas mobility and achieved significant incremental oil recovery of 25%.
Article
Energy & Fuels
Shams Kalam, Sidqi A. Abu-Khamsin, Shirish Patil, Syed Muhammad Shakil Hussain, Mohamed Mahmoud, Muhammad Shahzad Kamal, Emad W. Al Shalabi
Summary: Surfactant adsorption is a significant challenge for cEOR techniques and it depends on the presence of silicate and clay minerals in carbonate outcrops. The higher the impurities, the higher the surfactant adsorption. The addition of a novel adsorption inhibitor, methylene blue, dramatically reduced the surfactant adsorption on carbonate outcrops. Curve fitting analysis showed that the Redlich-Peterson model described the adsorption isotherm well, while the pseudo-second-order model described the adsorption kinetics accurately.
Article
Energy & Fuels
Eric Sonny Mathew, Moussa Tembely, Waleed Alameri, Emad W. Al-Shalabi, Abdul Ravoof Shaik
Summary: This study developed machine learning models to estimate relative permeability (Kr) curves in steady-state drainage coreflooding experiments. By training these models with a large database of Kr and capillary pressure curves, accurate predictions of Kr curves were achieved. The developed models have the advantages of fast prediction speed and low cost, which are important for flow research in oil and gas production.
SPE RESERVOIR EVALUATION & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Xiao Deng, Muhammad Shahzad Kamal, Shirish Patil, Syed Muhammad Shakil Hussain, Mohamed Mahmoud, Dhafer Al-Shehri, Emad W. Al-Shalabi
Summary: Interfacial tension (IFT) reduction and wettability alteration (WA) are important mechanisms for enhanced oil recovery (EOR). They work together to release trapped oil in oil-wet formations. However, studies have shown conflicting observations about their coupled effect, necessitating further research. This study used oil-aged Indiana limestone samples to represent oil-wet carbonate rocks and conducted tests to assess wettability and IFT. Results showed that higher IFT values and stronger WA performance led to faster and higher oil recoveries. The importance of IFT reduction was enhanced in higher permeability conditions, while the importance of WA was enhanced in lower permeability conditions.
Article
Multidisciplinary Sciences
Shams Kalam, Sidqi A. Abu-Khamsin, Afeez Olayinka Gbadamosi, Shirish Patil, Muhammad Shahzad Kamal, Syed Muhammad Shakil Hussain, Dhafer Al-Shehri, Emad W. Al-Shalabi, Kishore K. Mohanty
Summary: This study investigated the synergistic application of low salinity water and a cationic gemini surfactant in carbonate rock. The results showed that low salinity water can significantly reduce the adsorption of the surfactant, thus improving the effectiveness and economic feasibility of chemical enhanced oil recovery (cEOR) techniques.
SCIENTIFIC REPORTS
(2023)
Review
Energy & Fuels
Muhammad Mushtaq, Emad W. Al-Shalabi, Waleed Alameri
Summary: This review article focuses on the mechanisms of surfactant adsorption onto different rock types and minerals encountered in reservoirs, as well as the methods for controlling the adsorption. The factors affecting adsorption, such as surfactant structure, temperature, brine composition, and surface properties, are discussed in detail. In addition, recent trends in mitigating surfactant adsorption, including the use of sacrificial agents, alkalis, low-salinity brine, nanoparticles, and ionic liquids, are covered. Overall, this review aims to provide a comprehensive understanding of surfactant adsorption behavior and mitigation techniques to improve the efficiency of chemical enhanced oil recovery processes.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Shams Kalam, Sidqi A. Abu-Khamsin, Shirish Patil, Syed Muhammad Shakil Hussain, Mohamed Mahmoud, Muhammad Shahzad Kamal, Emad W. Al Shalabi
Summary: Surfactants are advantageous chemicals for enhanced oil recovery due to their ability to lower interfacial tension and modify wettability. However, their loss by adsorption on rock surfaces is a major drawback.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Shehzad Ahmed, Alvinda Sri Hanamertani, Waleed Alameri, Emad W. Al-Shalabi, Muhammad Rehan Hashmet
Summary: This study evaluates the performance of polymer flooding in carbonate reservoirs with high salinity. In-situ saturation monitoring and CT scanner technology were used to analyze the flow diversion and retention of the injected polymer solution. The results showed significant flow diversion from fractures to matrix, and an increase in inaccessible pore volume in fractured rock compared to unfractured rock.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Shams Kalam, Sidqi A. Abu-Khamsin, Shirish Patil, Syed Muhammad Shakil Hussain, Mohamed Mahmoud, Muhammad Shahzad Kamal, Emad W. Al Shalabi
Summary: Surfactant adsorption is a key factor affecting the efficiency of chemically enhanced oil recovery techniques. The presence of silicate and clay minerals increases the adsorption of surfactants on carbonate samples. High salinity and temperature decrease the adsorption. A new adsorption inhibitor, methylene blue, reduces the surfactant adsorption on carbonate samples significantly. The Redlich-Peterson and pseudo-second-order models provide the best fit for the adsorption isotherm and kinetics, respectively.
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.
