Article
Engineering, Chemical
Emilio Leal, Francisco Morales-Leal, Jorge Ancheyta, Fernando Alonso, Pablo Torres-Mancera
Summary: A detailed methodology for conducting experiments in batch reactors is proposed. Hydrodesulfurization of petroleum distillates is used as an example. The reaction parameters are calculated and a data reconciliation method is described. The experimental procedure is shown to be adequately performed with good agreement between reaction parameters.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Energy & Fuels
M. A. Coronel-Garcia, A. I. Reyes de la Torre, J. M. Dominguez-Esquivel, J. A. Melo-Banda, A. L. Martinez-Salazar
Summary: The kinetics of slurry phase heavy oil hydrocracking with nickel nanoparticles dispersed in PEG300 as the catalyst were studied. The reaction rate equation order was determined to be 2.5, and high residue conversion and selectivity towards naphtha were achieved. This study provides valuable insights for improving heavy oil hydrocracking processes.
Article
Energy & Fuels
Hung Hai Pham, Suk Hyun Lim, Kang Seok Go, Nam Sun Nho, Eun Hee Kwon, Kwang Ho Kim, Young-il Lim, Ho-Jung Ryu, Sung-youl Park
Summary: A modeling and simulation study was conducted on slurry phase hydrocracking of vacuum residue in a bench-scale slurry bubble column reactor. The results showed better performance in hydrocracking and hydrotreating compared to a continuous stir tank reactor, and suggested optimal operating conditions for improved stability.
Article
Energy & Fuels
Niklas Bergvall, Linda Sandstroem, You Wayne Cheah, Olov G. W. Hrman
Summary: Kraft lignin can be converted to liquid products suitable for downstream refining through slurry hydroprocessing experiments. The modified batch procedure used in this study provided better results compared to regular batch experiments by avoiding unwanted repolymerization and condensation reactions. Mo-sulfide catalyst, sulfided bauxite, and hematite catalysts showed high conversion rates, with Fe-based catalysts being a potentially cost-effective alternative for the slurry-based hydroconversion process.
Article
Engineering, Chemical
Praneet Mishra, Ashutosh Yadav
Summary: The upgradation of the bottom of the barrel has gained significant interest due to environmental rules, limited conventional oil reserves, and the production of light end products. This study proposes a modelling approach using different kinetic models to understand the dynamics of an industrial slurry phase reactor (SPR) for vacuum residue hydrocracking. The results show high conversion of vacuum residue and yield of light fractions in the industrial SPR.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Alexis Tirado, Guillermo Felix, Mikhail A. Varfolomeev, Chengdong Yuan, Jorge Ancheyta
Summary: An analysis was conducted on the reaction pathways in the hydrocracking of vacuum gas oil (VGO) using parallel and in-series reaction schemes. Kinetic parameters were estimated based on experimental data and diverse crucial factors using a Ni-Mo-F3.6/ASA-Al2O3 catalyst in a temperature range of 380-410 degrees C and 10 mPa. The results showed that the kinetic model based on parallel reaction pathways had a better fit compared to the literature. Sensitivity analysis, parity plot, and residual analysis were performed to ensure the suitability of the kinetic parameters. Each kinetic model presented a good fit with the experimental data, with average absolute error below 5%.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Energy & Fuels
Xiubin Hu, Jianbo Wang, Tinghai Wang, Chan Wang, Hongwei Zhang, Pei Yuan, Qingyan Cui
Summary: In this study, a high-efficiency mesoporous iron oxide catalyst was synthesized and the influence of alkali concentration on its crystal phase, morphology, and pore structure was investigated. The application of this catalyst in the slurry-phase hydrocracking of heavy oil led to an increase in the yields of gasoline and diesel distillates.
Article
Chemistry, Multidisciplinary
Aigerim Barshabayeva, Nazerke Balpanova, Darzhan Aitbekova, Murzabek Baikenov, Yermek Aubakirov, Z. S. Khalikova, Almas Tusipkhan, Balzhan Tulebaeva, Taurbaeva Gulzhan
Summary: In this study, a method for preparing a nanocatalyst containing nickel-cobalt by impregnation in a hydrochloric acid medium was disclosed. Optimal conditions for each stage of nanocatalyst preparation were established using probabilistic-deterministic experiment planning. The multifactorial equation allowed the calculation of the optimal manufacturing parameters of the nanocatalyst, providing high activity and selectivity during the hydrogenation of benzothiophene.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Niklas Bergvall, Roger Molinder, Ann-Christine Johansson, Linda Sandstrom
Summary: Co-refining fast pyrolysis bio-oil with fossil oil in a slurry hydrocracker can achieve high product quality and hydrodeoxygenation efficiency under specific conditions, while also reducing coke formation and maximizing carbon conversion rates.
Article
Chemistry, Multidisciplinary
Li Jiguang, She Yucheng, Shen Haiping, Hou Huandi, Guo Xin
Summary: In this study, the solvent deasphalting process was used as a pretreatment for Qilu vacuum residue. The yield of deasphalted oil was high, with low metal and asphaltene content. The n-butane solvent in the solvent deasphalting process showed high selectivity for HC class. The slurry-phase hydrocracking process achieved high conversion ratios of deoiled asphalt.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Wei-Wei Feng, Ye-Gui Qian, Ting-Hai Wang, Qing-Yan Cui, Yuan-Yuan Yue, Pei Yuan, Xiao-Jun Bao
Summary: The effects of support properties on the performance of Mo-based slurry-phase hydrocracking catalysts were investigated. It was found that the Mo/ASA catalyst showed the highest VR conversion and the most desirable product distribution among the catalysts studied.
Article
Engineering, Chemical
Wei Li, Mingfeng Wang, Pengju Huo, Chuanfeng Huang, Ningbo Wang, Tianhua Yang, Tao Yang, Yonghong Zhu, Cheng Yang
Summary: Slurry phase hydrocracking experiments were conducted in a pilot plant to investigate the effect of reaction temperature and different feedstocks on the conversion of residue and asphaltene, hydrogen consumption, and sulfur and metal removal. The results showed that reaction temperature had a linear relationship with conversion, hydrogen consumption, and coke yield. Feedstocks with higher asphaltene content exhibited higher asphaltene conversion and coke yield. Sulfur removal rate was higher than nitrogen removal rate, while nickel and vanadium removal rates were both above 77% and 88%, respectively. The light liquid fraction could be further converted into high value-added chemicals or clean transportation fuel, while the heavy liquid fraction could be used as a raw material for high quality products such as needle coke and carbon-based materials.
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2023)
Article
Energy & Fuels
Yuanfeng Wang, Jingman Lu, Xiao Zhang, Xinyue Zhang, Bohan Zhang, Jianxun Wu, Dong Guan, Ying Zhang, Junyang Chen, Xinyi Feng, Yahe Zhang, Zhiyuan Zhou, Linzhou Zhang, Quan Shi
Summary: Comparative experiments of thermal cracking and slurry phase hydrocracking were conducted to systematically investigate the reaction mechanism of heavy oil. The molecular composition of sulfur and nitrogen compounds in the feedstock and their products was characterized. The participation of hydrogen in hydrocracking leads to a lower cracking rate and higher liquid yield compared to thermal cracking. Nitrogen- and sulfur-containing aromatics with high molecular condensation degree are refractory heteroatoms, while aromatics with ring number over 4 and exposed five-membered heteroaromatic rings have high saturation reactivity. The understanding of the complex reaction network and mechanism of heavy oil hydrocracking from both thermal reaction and hydrogenation perspectives is instructive for catalyst design and process optimization.
Article
Energy & Fuels
Hui Luo, Jian Sun, Wenan Deng, Chuan Li, Feng Du
Summary: In this study, oil-soluble Fe-Ni sulfide nanoparticles (FeNiSx) were prepared and used as a catalyst for slurry-phase hydrocracking of Liaohe vacuum residue (LHVR). The FeNiSx particles exhibited excellent hydrocracking activity, converting LHVR into light oil with lower coke and gas formation. The yield of light oil per unit of coke formation was significantly increased, and the conversion of resin and asphaltene was also high. The FeNiSx particles had good solubility and dispersibility, resulting in their excellent catalytic performance.
Article
Chemistry, Multidisciplinary
Abdulrahman Bin Jumah, Maryam Malekshahian, Aleksander A. Tedstone, Arthur A. Garforth
Summary: A kinetic model for LDPE hydrocracking was developed, estimating kinetic parameters and mass transfer coefficients from experimental data while considering mass transfer limitations and vapor-liquid equilibrium. The product stream was dominated by naphtha fractions, decreasing with longer reaction times.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Energy & Fuels
Roque Guzman, Silvano Rodriguez, Pablo Torres-Mancera, Jorge Ancheyta
Summary: Appropriate prediction of asphaltene stability is crucial for anticipating operational problems in petroleum production, processing, transportation, and storage. This study evaluated the stability of crude oils using various methods and found discrepancies in the results, highlighting the importance of using multiple methodologies for accurate prediction.
Article
Energy & Fuels
Emilio Leal, Pablo Torres-Mancera, Jorge Ancheyta
Summary: This article discusses a technology of placing different catalysts in multibed configurations to produce a synergistic effect and proposes it as a viable low-investment solution for ultralow sulfur diesel (ULSD) production. However, the synergistic effect between the catalysts is not fully understood yet, and designing the best stacking system is challenging. Therefore, further research on the influences of variables and the development of new mathematical models are necessary.
Article
Energy & Fuels
Jose A. D. Munoz, Jorge Ancheyta, Luis C. Castaneda
Summary: The study focused on the technological selection for upgrading heavy crude oils to produce light oil, where the price differential between feed and product proved to be a key factor. Four methodologies for calculating crude oil prices were compared, with the yield-based method showing the most accuracy. Economic analysis also indicated higher profits when processing heavier crude oil.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
J. Garcia Cardenas, J. Ancheyta
Summary: The deasphalting process was modeled and predicted using continuous thermodynamics and the perturbed hard chain theory equation of state. The results showed that the model can accurately predict the product yields, quality, and distribution in the deasphalting process.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Guillermo Felix, Juan J. Rios, Alexis Tirado, Mikhail A. Varfolomeev, Chengdong Yuan, Jorge Ancheyta
Summary: A methodology to estimate kinetic parameters using the Monte Carlo algorithm and sensitivity analysis is described. The approach is applied to the experimental data reported in the literature for slurry-phase hydrocracking of heavy oil with ionic liquids. It is demonstrated that the reported values of kinetic parameters can be optimized to reduce the average absolute error. Simulations with the Monte Carlo algorithm help find the best initial guess for further optimization of parameters.
Article
Energy & Fuels
P. Schacht-Hernandez, R. Quintana-Solorzano, O. Morelos-Santos, I Soto-Escalante, J. Ancheyta
Summary: The availability of conventional light or medium crude oils is decreasing worldwide, leading refineries to face the challenge of processing more heavy crude oils. This research explores the use of liquid catalysts to upgrade heavy crude oil in situ, resulting in improved properties.
Article
Energy & Fuels
Javier Jurado, Jorge Ancheyta
Summary: A quasi-dynamic one-dimensional pseudohomogeneous trickle-bed reactor model for hydrotreating of heavy vacuum residue was developed, which takes into account catalyst deactivation, impurities concentration in heavy oil, and coke and vanadium deposition. The model successfully predicted the typical S shape profiles during time-on-stream.
Article
Engineering, Chemical
Guillermo Felix, Alexis Tirado, Mikhail A. Varfolomeev, Chengdong Yuan, Jorge Ancheyta
Summary: Characteristic curve equations were used to calculate the product distribution of Ashal'cha heavy crude oil during non-catalytic aquathermolysis at different reaction times and temperatures. The developed equations accurately estimated the experimental data, and it was found that the unstable primary and secondary products equation performed better in predicting the aromatics and saturate fractions.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Article
Energy & Fuels
Alexis Tirado, Guillermo Felix, Ameen A. Al-Muntaser, Mohamed Said Chemam, Chengdong Yuan, Mikhail A. Varfolomeev, Jorge Ancheyta
Summary: Despite significant efforts to understand the reaction mechanism of asphaltenes during aquathermolysis reaction, knowledge about their molecular structures and reaction pathways remains limited. This work extensively reviews and discusses experimental results from different samples of asphaltenes during aquathermolysis reaction to obtain information on their elemental composition, functional groups, and average structural parameters. The findings provide theoretical support for future research on the aquathermolysis of heavy crude oils with various catalysts and highlight the impact of operating conditions, catalyst type, and asphaltene structure on the changes in asphaltenes.
Article
Engineering, Chemical
Alexis Tirado, Guillermo Felix, Muneer A. Suwaid, Ameen A. Al-Muntaser, Dmitry A. Antonenko, Igor S. Afanasiev, Mikhail A. Varfolomeev, Chengdong Yuan, Jorge Ancheyta
Summary: Oil-soluble catalysts have been found to improve the flow properties of heavy crude oil during steam injection processes. In order to better understand the effects and reaction mechanisms of these catalysts, further studies using complex kinetic models are needed. This study investigated the catalytic effect of copper oleate on aquathermolysis of heavy crude oil, and developed a kinetic model to predict the yield of different fractions and gases. The results showed that copper oleate reduces polyaddition reactions of heavy fractions and favors the production of lighter compounds.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Energy & Fuels
Aaron Macias, Esau A. Hernandez, Vicente Samano, Jorge Ancheyta
Summary: The regular solution model with HBT molar volume correlation is used to predict asphaltene precipitation in crude oils and blends. The presence of other compounds greatly affects asphaltene precipitation under the same temperature and pressure conditions. The proposed model accurately predicts asphaltene precipitation using average properties and assumptions.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Juan J. Rios, Emilio Leal, Fernando Trejo, Jorge Ancheyta
Summary: Due to high emissions of polluting gases from fossil fuel combustion, organizations and governments have established standards for cleaner fuels. This study examines the kinetic models of hydrotreating reactions for producing ultralow sulfur diesel. It includes discussions on reaction systems, catalysts, operating conditions, and proposes a set of kinetic models for simulation.
Article
Engineering, Chemical
Fernando Alonso, Francisco Morales-Leal, Jorge Ancheyta, Pablo Torres-Mancera
Summary: This study deeply characterized two refinery streams and discussed their potential use and influencing factors in hydrotreatment.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Emilio Leal, Francisco Morales-Leal, Jorge Ancheyta, Fernando Alonso, Pablo Torres-Mancera
Summary: A detailed methodology for conducting experiments in batch reactors is proposed. Hydrodesulfurization of petroleum distillates is used as an example. The reaction parameters are calculated and a data reconciliation method is described. The experimental procedure is shown to be adequately performed with good agreement between reaction parameters.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Alexis Tirado, Guillermo Felix, Ameen A. Al-Muntaser, Chengdong Yuan, Mikhail A. Varfolomeev, Jorge Ancheyta
Summary: Steam-based technologies, particularly catalytic aquathermolysis, show great promise for increasing the recovery factor of heavy crude oil. This process requires proper experimentation to evaluate operational conditions, catalyst performance, and reaction kinetics. This study provides a comprehensive review of experimental results on diverse upgraded oil samples, discussing the effects of various reaction parameters and highlighting behaviors in gas production and viscosity reduction for future research and development. The reactivity of chemical compounds involved plays a significant role in crude oil upgrading, necessitating detailed analysis for experimental development and scale-up.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(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.
