Article
Engineering, Environmental
Qingqi Zheng, Dequan Zhang, Peng Fu, Aixia Wang, Yongmei Sun, Zhiyu Li, Qingwen Fan
Summary: Understanding the role of volatile evolving, char structural evolution, and pyrolysis reaction pathway is crucial for effective utilization of lignin through a pyrolysis-based biorefinery approach. Fast pyrolysis of lignin at different temperatures revealed the release characteristics of volatile compounds and their connection with char structure evolution. The results showed that the release of simple substituted aryl compounds was promoted by the cleavage of beta-O-4 and alpha-O-4. The study also found that high temperatures contributed to the formation of aromatic monomers, and the aromaticity can be evaluated based on the atom ratio of H/C and the degree of ring condensation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Yun Liu, Yuan Zhang, Yu-qing Zhang, Lian-sheng Chen, Hai-ying Li, Hui-min Liu
Summary: The study investigated the effects of pyrolysis heating rate on the char structure and CO2 gasification reactivity of energy crops, revealing that bio-char obtained at a rapid heating rate had more structural defects and carbon crystallite imperfections, leading to higher gasification reactivity. However, this also resulted in a decrease in crystallization size, graphitization, and aromatization degree.
Article
Engineering, Environmental
Kagiso Bikane, Jie Yu, Ravi Shankar, Xiangyi Long, Nigel Paterson, Marcos Millan
Summary: This study investigates the gasification kinetics of Morupule coal in atmospheric pressure CO2 and the structural evolution of residual chars. The research shows that gasification reaction rates are high, with little impact on the bulk chemical structure of chars but significant changes in surface chemistry. Residual chars from gasification experiments exhibit lower combustion reactivity compared to chars produced under inert pyrolysis conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Analytical
Jaroslav Mosko, Michael Pohorely, Siarhei Skoblia, Radek Fajgar, Pavel Straka, Karel Soukup, Zdenek Beno, Josef Fartak, Olga Bicakova, Michal Jeremias, Michal Syc, Erik Meers
Summary: Pyrolysis of sewage sludge at 400-800 degrees C showed that increasing temperature led to higher phosphate and metaphosphate content, and lower reduced P species content; higher temperature also increased sulfide content and decreased sulfate and sulfite content; the effect on nitrogen species was minimal. Raman spectroscopy and NMR revealed significant contribution of graphite and (poly) aromatic hydrocarbons to the organic structure of sludge-chars.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Engineering, Chemical
Mingyuan Wang, Wen Fu, Haibin Wang, Junzhe Cai, Jiayu Zhang, Zhicheng Tao, Li Li, Xuefeng Wang, Ye Hua, Xiaowei Bai
Summary: This study used multiple analysis techniques to investigate the structure and pyrolysis reactions of nine typical coals and chars from Xinjiang. The results showed that the reduction degree of CO structures in coal during coalification is related to the Vdaf content. Condensation of aromatic rings during coalification led to a decrease in CO structures, while the contents of cross-linking and substitution structures persistently decreased relative to the large aromatic ring structures. Coal type influenced char and tar yields, particularly the yields of alkanes and phenols in tar. During pyrolysis, the relative content of large aromatic ring structures in coal remained stable, while the relative content of small aromatic ring structures declined, suggesting that small aromatic rings might transform into tar, resulting in a high selectivity of phenolic products in tar.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Dezhi Chen, Xinyu Ning, Wen Tang, Jun Xu, Kai Xu, Limo He, Hengda Han, Sheng Su, Long Jiang, Yi Wang, Song Hu, Jun Xiang
Summary: This study utilized micro-Raman spectroscopy to investigate the chemical structures of pyrolytic chars prepared from 32 kinds of Chinese coals, finding that the aromatization degree is the key distinguishable factor for chars prepared from coals of different ranks. A comprehensive coal property index was proposed to predict the chemical structure of pyrolytic char effectively.
Article
Crystallography
Yanshan Yin, Zihua Wu, Jianhang Tao, Caiwen Qi, Wei Zhang, Shan Cheng
Summary: This paper investigates the evolution of the chemical structure of coal char during pyrolysis. The results show that the degree of order and the content of graphite-like microcrystalline carbon in coal char vary with pyrolysis temperatures. The relative content of C=O and COOH in coal char decreases with increasing temperature, indicating an increase in the degree of order at higher temperatures.
Article
Thermodynamics
Haodong Zhu, Baojun Yi, Hongyun Hu, Qizhou Fan, Hao Wang, Hong Yao
Summary: During the solar pyrolysis of biomass, the heat transfer is restricted, leading to the exploration of co-pyrolysis reaction behaviors of biomass and char, and secondary pyrolysis reactions of biomass. The effects of char and potassium on fast pyrolysis products distribution are discussed, showing that high temperature favors volatile release and higher heating rate promotes decomposition of bio-oils into gaseous products. Char enhances secondary pyrolysis reactions while potassium increases reactivity of biomass pyrolysis.
Article
Energy & Fuels
Jiangyong He, Chong Zou, Junxue Zhao, Jiale Xi, Yuan She, Mengmeng Ren, Yufen Xu
Summary: This study investigates the variability in in situ Raman spectroscopy for determining the chemical structure of chars. The study explores the rationality of Raman's original peak spectrum fitting method, the influence of objective lens magnification, particle size, and number of measurements on peak shape and characteristic parameters.
Article
Thermodynamics
Yee Wen Chua, Hongwei Wu, Yun Yu
Summary: This study investigates the interactions between cellulose and lignin during fast pyrolysis at temperatures of 100-350 degrees C. The results suggest that co-pyrolysis of cellulose and lignin enhances volatile release at lower temperatures but increases char formation at higher temperatures. The differences in char yields between experimental and calculated values provide evidence of cellulose-lignin interactions during co-pyrolysis.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2021)
Article
Engineering, Environmental
Song Qianshi, Wang Xiaohan, Li Haowen, Yang Zixin, Ye Yue, Huo Jiepeng
Summary: The study found that the self-developed char reactivity model accurately predicted the reaction rate of char samples under different gasification temperatures, providing a valuable reference for predicting char gasification reaction rate.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Xujun Chen, Hongwei Wu
Summary: This study investigates the effect of phosphorus on the char structure and reactivity of biomass during fast pyrolysis. Experimental results show that the presence of phosphorus significantly increases char yield and C/H content, while decreasing O content. The form and content of phosphorus play an important role in the evolution of char structure and reactivity.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2021)
Article
Chemistry, Applied
Shasha Liu, Yuhui Wang, Juan Wang, Jianbin Zhou, Xun Hu, Hongqi Sun, Muhammad Asif Akhtar, Hong Zhang, Yong Huang, Shu Zhang
Summary: The effects of char-supported Ni catalysts on the decomposition of lignin model compounds were studied at different preparation temperatures, showing that higher temperature char supports can enhance the activity of the metal catalyst, leading to efficient conversion of the substrate and increased product formation. The synergistic effect of char support and Ni on BPE decomposition was demonstrated, highlighting the potential of char-supported metals as effective catalysts for biomass conversion.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Energy & Fuels
Carmen Branca, Colomba Di Blasi
Summary: The oxidation of potassium-loaded beech wood chars produced from packed-bed pyrolysis at moderate temperatures was studied. As the potassium content increases, the process dynamics shift from a single to two conversion zones. Addition of additives with high basicity enhances carbon conversion, but excessive potassium content leads to saturation and inhibition effects. Additionally, a small amount of char is always oxidized at high temperatures. Potassium enhances char oxidation rates through alkaline catalysis and modifications in the char structure.
Article
Energy & Fuels
Jianan Qi, Cuigang Fan, Songgeng Li
Summary: The impacts of temperature and oxygen concentration on char structure evolution during pyrolysis were revealed using Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and BET characterization techniques. Char prepared under oxygen atmosphere showed higher reactivity compared to that under inert (N2) atmosphere, with the presence of oxygen reducing char graphitization at high temperatures. The presence of oxygen in pyrolysis improved pore volume and specific surface area, with a critical oxygen concentration observed at high pyrolysis temperatures.
Article
Engineering, Chemical
Wenda Zhang, Yuankai Wang, Mengshi Chen, Yijun Zhao, Shaozeng Sun, Dongdong Feng
Summary: The study found that under pressurized conditions, the reduction characteristics of NO are affected by pyrolysis pressure, temperature, and residence time, with increasing these conditions inhibiting the characteristics of Char-NO, and the reduction rate of NO gradually increasing with higher environmental pressure.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Chenxi Bai, Wenda Zhang, Lihua Deng, Yijun Zhao, Shaozeng Sun, Dongdong Feng, Jiangquan Wu
Summary: This study investigated the effects of pressure, steam concentration, and residence time on the migration and transformation of char-N. The results showed that pressure was a significant factor in influencing NO emissions, and H2O promoted the migration of char-N to NO and the formation of N-X functional groups.
Article
Chemistry, Applied
Dawei Guo, Dongdong Feng, Yalong Zhang, Zijun Zhang, Jiabo Wu, Yijun Zhao, Shaozeng Sun
Summary: This study combines biochar adsorption with TiO2 photocatalytic technology to achieve integrated treatment of VOCs. The results show that the physical and chemical properties of the biochar-nano TiO2 cross-linked structure have been significantly improved, resulting in better removal efficiency for toluene. This study has important guiding significance for the removal of VOCs.
FUEL PROCESSING TECHNOLOGY
(2022)
Review
Chemistry, Applied
Dawei Guo, Dongdong Feng, Yu Zhang, Yalong Zhang, Yijun Zhao, Zijian Zhou, Jian Sun, Cui Quan, Guozhang Chang, Shaozeng Sun
Summary: This review summarizes the research results of carbon material-TiO2 cross-linked structure for the photocatalytic degradation of VOCs and reduction of CO2. It analyzes the impact of environmental factors on photocatalytic efficiency, the characteristics of different modification methods, and the synergistic mechanism of carbon material-TiO2.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Kun Chen, Wenda Zhang, Chenxi Bai, Lihua Deng, Yijun Zhao, Linyao Zhang, Dongdong Feng, Shaozeng Sun, Yukun Qin
Summary: The study found through numerical simulations that increasing H2O concentration reduces the average temperature of char particles, and O2 consumption in the boundary layer accounts for 50% of the total O2 consumption. Higher temperatures and H2O concentrations enhance competition for O2 by homogeneous reactions.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Linyao Zhang, Yinan Shu, Chang Xing, Xiye Chen, Shaozeng Sun, Yudong Huang, Donald G. Truhlar
Summary: The present study systematically investigates the dependence of G(0)W(0) calculations on the choice of orbitals, finding that the percentage of Hartree-Fock exchange in density functionals strongly influences the predicted molecular ionization energy and crystal band gaps. The study also suggests that global-hybrid functionals provide more accurate band gaps for semiconductors at a reasonable cost compared to widely employed methods.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2022)
Review
Chemistry, Applied
Lihua Deng, Yijun Zhao, Shaozeng Sun, Dongdong Feng, Wenda Zhang
Summary: This paper systematically reviews the research status and key issues of O-2/H2O combustion technology, introduces its application in pulverized coal combustion, and proposes future research directions.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Yu Zhang, Qi Shang, Dongdong Feng, Hongliang Sun, Fuhua Wang, Zhichao Hu, Zhenyu Cheng, Zijian Zhou, Yijun Zhao, Shaozeng Sun
Summary: The co-gasification of biomass and coal is a promising method to produce H-2-rich synthesis gas, which is of great significance for carbon-neutrality development in China.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Applied
Yukai Li, Dongdong Feng, Chenxi Bai, Shaozeng Sun, Yu Zhang, Yijun Zhao, Yunzhi Li, Feng Zhang, Guozhang Chang, Yukun Qin
Summary: This study simulated the local location of the horizontal cyclone furnace using a small high-temperature test bench and investigated the influence of various fluxing agents on the melting of MSWI fly ash. The results showed that controlling the content and ratio of different fluxing agents is important to obtain low melting-point minerals and high glass phase concentration.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Hongliang Sun, Dongdong Feng, Yu Zhang, Shaozeng Sun, Yijun Zhao, Feng Zhang
Summary: This paper investigates the coke accumulation characteristics in catalytic tar reforming using different K and Ca-loaded biochar catalysts. The results indicate that K-loaded biochar exhibits a higher tar conversion capacity, while H-form biochar has a lower tar removal efficiency. The loading of K/Ca affects the growth structure of the coke, with K-loaded biochar retaining a higher micropore area and experiencing a smaller increase in average pore size. Furthermore, the loading of K promotes the dehydrogenation of tar components, while only K catalyzes the deoxygenation of tar components. These findings are important for improving the efficiency and selectivity of tar reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agricultural Engineering
Hongliang Sun, Dongdong Feng, Shaozeng Sun, Yijun Zhao, Linyao Zhang, Guozhang Chang, Qingjie Guo, Jiangquan Wu, Yukun Qin
Summary: This paper investigates the effect of alkali and alkaline earth metallic species on the thermal conversion of corn straw. The results show that K/Ca loading promotes the conversion of certain chemical groups in corn straw, especially K element has a strong influence. It helps reduce CH4 and CO emissions and promote CO2 release during pyrolysis.
BIOMASS & BIOENERGY
(2022)
Article
Energy & Fuels
Linhan Dong, Dongdong Feng, Yu Zhang, Heming Dong, Zhiqi Zhao, Jianmin Gao, Feng Zhang, Yijun Zhao, Shaozeng Sun, Yudong Huang
Summary: The new ammonia carbon capture technology efficiently captures CO2, with added ethanol reducing ammonia escape and enhancing CO2 absorption rate. Factors like temperature, supersaturation, and solvating precipitant content influence the induction of crystallization. The induction period and crystal growth mechanism can be affected by solubilizer content, temperature, and the presence of a magnetic field.
Article
Biochemistry & Molecular Biology
Shuai Guo, Lidong Liu, Deng Zhao, Chenchen Zhao, Xingcan Li, Guangyu Li
Summary: This study optimized the co-torrefaction of fungus bran and polypropylene waste plastic to obtain clean solid biofuel with high calorific value and low ash content. The optimal operating conditions regarding temperature, time, and PP blending ratio were determined. The prepared mixed biochars showed improved properties as ideal biofuels with decreased ash content.
Article
Chemistry, Physical
Shuai Guo, Weinan Xiao, Deng Zhao, Zhaoyuan Liu, Lidong Liu, Dandan Xu, Xingcan Li, Guangyu Li
Summary: The ability of water to act as a catalyst in hydrothermal carbonization (HTC) was examined using density functional theory (DFT) calculations. It was found that water molecules exert catalytic effects by assisting hydrogen transfer in isomerization and dehydration steps, significantly reducing the overall reaction energy barrier.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Energy & Fuels
Zixin Jiao, Xiye Chen, Yan Zhao, Li Liu, Chang Xing, Linyao Zhang, Penghua Qiu
Summary: This study evaluates the effect of active alkali and alkaline earth metals on the co-gasification process. The results show that active alkali and alkaline earth metals promote the increase of char content during pyrolysis, but catalyze the reaction of char, resulting in a reduction of char content during gasification.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
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.