Article
Energy & Fuels
Xiangxin Han, Yiru Huang, Xiaoye Wang, Yanwen Wang, Xiumin Jiang
Summary: Fluidized bed retorting of oil shale is a promising technology for high shale oil yield. This study focused on the effect of retorting temperature on product yield and composition distribution. Results showed that increasing retorting temperature led to higher shale oil yield, decreased shale char, and promoted cracking reactions of shale oil.
Article
Energy & Fuels
Wenran Gao, Mingming Zhang, Hongwei Wu
Summary: This study investigates bed agglomeration during fast pyrolysis of bio-oil derived fuels in a fluidized-bed reactor and reveals the positive effects of methanol and biochar in reducing tar formation. The results show a positive linear correlation between agglomeration yield and tar formation, indicating the significant impact of tar formation on bed agglomeration of bio-oil derived fuels.
Article
Energy & Fuels
Diyar Tokmurzin, Ji Young Nam, Tae Ryeon Lee, Sung Jin Park, Hyungseok Nam, Sang Jun Yoon, Tae-Young Mun, Sung Min Yoon, Ji Hong Moon, Jae Goo Lee, Dong Hyun Lee, Ho Won Ra, Myung Won Seo
Summary: The utilization of mixed plastic solid recovered fuel (SRF) through high temperature flash pyrolysis using a fluidized bed reactor has shown promising results in terms of producing high calorific gas and useful chemical products.
Article
Green & Sustainable Science & Technology
Changfa Zhang, Mengyan Yu, Xiangtong Li, Xueguang Li, Yang Liu, Yajie Jin, Jianjun Dai, Long Wang, Chunbao Zhou, Yingwen Zhang, Yanxin Yuan, Junshen Qu, Hejie Yu, Jie Fu, Chenglong Liu, Yan Li, Asif Ali Siyal
Summary: This study utilized fluidized bed pyrolyser (FBP) to recover and regenerate spent bleaching clay (SBC), and found the potential for upgrading it into green fuels and chemicals. The decolorization ability of pyrolysis chars (PCs) increased with pyrolysis temperature, and the heavy metal content in PCs was lower than the national standards, highlighting the significance of this technology.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Mengyan Yu, Changfa Zhang, Xiangtong Li, Yang Liu, Xueguang Li, Junshen Qu, Jianjun Dai, Chunbao Zhou, Yanxin Yuan, Yajie Jin, Yingwen Zhang, Jie Fu, Hejie Yu, Long Wang, Chenglong Liu, Yan Li
Summary: This study investigated the effect of temperature on soapstock pyrolysis and analyzed the characteristics of the resulting chars and pyrolysis oils. The results showed that the yield of chars decreased with increasing temperature, while the yield of pyrolysis oils reached a maximum at 600 degrees C. The composition of the chars changed with temperature, with carbon, hydrogen, and nitrogen decreasing, and sulfur tending to be retained. The pyrolysis oils were found to contain ketones, alcohols, and hydrocarbons, and higher temperatures promoted the production of short-chain alkanes and the conversion of alkenes to benzene derivatives. The study also identified three stages of soapstock pyrolysis and highlighted the role of calcium ions in the reaction. This study provides important insights for the thermochemical treatment of soapstock, leading to improved quality of pyrolysis oils and pollution control.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Maurizio Troiano, Valeria Ianzito, Roberto Solimene, Elvis Tinashe Ganda, Piero Salatino
Summary: A model of non-catalytic fast fluidized bed pyrolysis of biomass has been developed to investigate the relevance of secondary heterogeneous reactions. The model provides useful guidelines for the design and control of fluidized bed pyrolyzers.
Article
Chemistry, Analytical
Hairat Abduhani, Yalkunjan Tursun, Abulikemu Abulizi, Dilinuer Talifu, Xueli Huang
Summary: This study investigated the characteristics and kinetics of gas component releasing during oil shale pyrolysis, identifying two decomposition regions of OS and analyzing the formation kinetics of individual gas components. The activation energy values for H-2, CH4, and CO2 were calculated to be in specific ranges, showing significant variations in high temperature zones. The control step in the pyrolysis process was found to transition from surface chemical reaction control to joint control of reaction and diffusion with increasing temperature.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Energy & Fuels
Antonio Soria-Verdugo, Eduardo Cano-Pleite, Alberto Passalacqua, Rodney O. Fox
Summary: The effect of biomass particle shape on the conversion of beech wood during pyrolysis in a bubbling fluidized bed was investigated. The experimental results demonstrated that the pyrolysis velocity of the particles was proportional to their characteristic heat transfer length. The pyrolysis time ranged from 43 to 85 s at 500°C and from 27 to 53 s at 600°C.
Article
Chemistry, Analytical
Fabio Leal Mendes, Andrea Rezende de Pinho, Marlon Brando Bezerra de Almeida, Elina Bastos Carama
Summary: The use of a circulating fluidised bed (CFB) reactor in biomass pyrolysis process promotes higher heat transfer and energy self-sufficiency. This paper studied two approaches to enhance the deoxygenation reactions of biomass components, namely cofeeding with hydrogen-rich compounds and using a ZSM-5 catalyst. Cofeeding methane or propane resulted in bio-oils with lower oxygen content compared to conventional pyrolysis. Propane achieved better performance in terms of hydrocarbon concentrations in bio-oils and increased BTX production.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Multidisciplinary
Quoc Khanh Tran, Manh Linh Le, Hoang Vu Ly, Hee Chul Woo, Jinsoo Kim, Seung-Soo Kim
Summary: The kinetic parameters of biomass pyrolysis from Pitch Pine were studied, showing that the optimal temperature for bio-oil yield was 500 degrees Celsius with a maximum of 65.5%. The bio-oil had a high heating value ranging from 22MJ/kg to 24MJ/kg, and contained useful chemicals such as levoglucosan, furfural, and guaiacol. The pyrolyzed oil from Pitch Pine trees showed promise as a biofuel candidate due to the production of a significant amount of C-5-C-11 (gasoline fraction).
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Miao Yang, Seyed Morteza Mousavi, Hesammedin Fatehi, Xue-Song Bai
Summary: This paper investigates biomass gasification in lab-scale fluidized bed gasifiers using the MP-PIC model coupled with the DKM and a new pyrolysis model. The results show that the DKM improves the robustness of the model and the new pyrolysis model enhances the sensitivity of gasification product yields to operating temperature. The simulation results agree well with experimental data and reveal the effects of steam/biomass ratio and operating temperature on gas product formation. The steam/biomass ratio has a minor effect on pyrolysis and heterogeneous reactions, while the gasifier temperature has a crucial impact on these processes and carbon conversion.
Article
Energy & Fuels
Yunlei Cui, Yaning Zhang, Longfei Cui, Qingang Xiong, Ehab Mostafa
Summary: Conversion of plastic wastes into value added fuels is a good way for sustainable development. In this study, microwave-assisted fluidized bed reactor pyrolysis of polypropylene plastic for pyrolysis gas production was experimentally investigated. The effects of pyrolysis temperature, fluidizing velocity, and microwave power on the pyrolysis gas products were analyzed. An optimal pyrolysis gas yield of 76.1 wt% was obtained when the pyrolysis temperature was 900°C, fluidizing velocity was 2.36 x 10-3 m/s and microwave power was 800 W, and the pyrolysis gas was rich in C3H6, CH4, and C3H8 with a higher heating value of 51.8 MJ/m3. The produced gas has great potentials in applications, such as fuel cells.
Article
Energy & Fuels
Robin Faust, Panida Aonsamang, Jelena Maric, Alyona Tormachen, Martin Seemann, Pavleta Knutsson
Summary: Thermal conversion of automotive shredder residue (ASR) using indirect fluidized bed gasification was conducted, with a focus on the interactions between the bed material and the ASR ash. Iron deposition onto olivine particles was observed, potentially increasing their oxygen-carrying ability. A significant portion of the particles in the bed originated from the ASR ash, containing Fe, Si, Zn, Ti, Cu, with some particles exhibiting a hollow morphology suggesting a melt state during formation.
Article
Biochemistry & Molecular Biology
Gary Reineccius, Shardul Patil, Vaidhyanathan Anantharamkrishnan
Summary: This research compares granulation to spray drying/agglomeration for producing flavoring particles. The study finds that granulation produces better properties, such as improved oxidation resistance, higher density, without the need for a two-step process.
Article
Thermodynamics
Yusuf H. Bello, Mahmoud A. Ahmed, Shinichi Ookawara, Ahmed E. Elwardany
Summary: An improved biomass conversion in a lab-scale fluidized bed reactor (FBR) is achieved by optimizing the air distributor orifice size and number. Different methods of introducing air yield different results in gas holdup, with increasing the orifice number showing positive effects on gas holdup.
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.