Article
Energy & Fuels
Haiping Yang, Hao Song, Chuang Zhao, Junhao Hu, Siqin Li, Hanping Chen
Summary: This study investigated the high temperature catalytic gasification of petroleum coke pyrolysis char. Different catalysts were found to have varying effects on the gasification process, with NaAlO2 showing the highest catalytic performance. The addition of NaAlO2 significantly improved the gasification reactivity of petroleum coke pyrolysis char.
Article
Biochemistry & Molecular Biology
Man Zhang, Hongyu Ban, Zhiqing Wang, Xinning Xiang, Xiaolei Wang, Qian Zhang
Summary: The impact of K(2)CO(3) catalyst on the gasification of petroleum coke was studied. The results showed that increasing the amount of K(2)CO(3) greatly reduced the gasification temperatures of the coke. However, beyond a certain concentration of K+, the catalytic reaction became saturated. Further increase in the catalyst did not inhibit the gasification rate. The vaporization of the catalyst was observed during high-temperature gasification. XRD, Raman spectroscopy, and N-2 adsorption analyses revealed that the presence of the catalyst altered the carbon crystallite structure of the residual coke.
Review
Energy & Fuels
Miao Wang, Yiling Wan, Qinghua Guo, Yonghui Bai, Guangsuo Yu, Yurong Liu, Hong Zhang, Shu Zhang, Juntao Wei
Summary: Petroleum coke and biomass/coal co-gasification is a promising approach for efficiently integrating the individual advantages of different gasification feedstocks with syngas production. Research on syngas production, reactivity characteristics, and synergy behavior of co-gasification is critical. H-2-rich syngas and higher co-gasification reactivity can be acquired under specific conditions, such as high H/C ratio, coal/biomass proportion, gasification temperature, and gasification agent concentration. Synergy behavior in co-gasification shows relationships with free radical migration and AAEMs transfer.
Article
Energy & Fuels
Yang Geng, Jinfeng Bai, Xiangyun Zhong, Yang Liu, Zhihua Zhang, Xingxing Chen
Summary: This study investigates the promoting effects of phenol aqueous solutions on coke gasification. The results show that phenol aqueous solutions can enhance the reaction rate and increase the total syngas amount and carbon conversion of coke gasification. The phenol in the solutions also has an effect on the coke structure during gasification reactions.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Environmental
Peng Lv, Yonghui Bai, Jiaofei Wang, Xudong Song, Weiguang Su, Guangsuo Yu
Summary: In this study, the applicability of chicken manure leachate (CML) in the catalytic gasification of coal gasification fine slag residue carbon (RC) was investigated. It was found that CML can significantly improve the gasification reactivity of RC by promoting the formation of more active sites on the RC surface, thus accelerating the gasification reaction rate. This research is of great significance for the classification and resource utilization of coal gasification fine slag.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Wei Li, Deepak Pudasainee, Rajender Gupta, Wu Yang, Ben Wang, Lushi Sun
Summary: The research found that controlling the gasification temperature of petroleum coke above 1200 degrees Celsius is beneficial for improving gasification reactivity. Petroleum coke with high ash content promotes the decomposition of functional groups to generate active radicals, thereby increasing active sites.
Article
Thermodynamics
Jun Zhao, Hassan Nasir Mangi, Zhenyue Zhang, Ru'an Chi, Haochen Zhang, Mengyu Xian, Hong Liu, Haibin Zuo, Guangwei Wang, Zhigao Xu, Ming Wu
Summary: This study aimed to utilize low-rank coal and biomass residue in the coking process, and investigated the performance and structural characteristics of the prepared cokes. The results showed that modified coal could improve the quality and caking performance of coke, as well as enhance the gasification performance.
Article
Energy & Fuels
Xianyu Liu, Jiandong Ma, Qi Hong, Shiwei Ma, Huijun Ge, Tao Song
Summary: The study found that potassium can be used as a catalyst to accelerate coke conversion in the chemical looping gasification process, with good catalytic effects. Different potassium introduction modes have different effects on syngas yields and distribution, carbon conversion and potassium evolution. Using potassium to modify coke can achieve higher average carbon conversion rates.
Article
Thermodynamics
Xin Yu, Dunxi Yu, Fangqi Liu, Jingkun Han, Jianqun Wu, Minghou Xu
Summary: The study found that high-sulfur petroleum coke has little impact on co-gasification, while rice straw shows a significant catalytic effect only after being completely gasified into ash. Under high-concentration steam conditions, the main components of synthesis gas are H-2 and CO2, and rice straw ash exhibits a violent melting state.
Article
Thermodynamics
Agnieszka Korus, Adam Klimanek, Slawomir Sladek, Andrzej Szlek, Airy Tilland, Stephane Bertholin, Nils Erland L. Haugen
Summary: The process of petcoke conversion in chemical looping combustion technology requires detailed knowledge about the reactions with O-2, CO2, and H2O. Experimental results showed that the reaction with CO2 was slow, and kinetic parameters of petcoke gasification were determined by applying different models to the data obtained from a custom test rig.
Article
Engineering, Environmental
Xurui Zhang, Zezhou Chen, Long Cheng, Linlin Xu, Xiaotao Bi, Qingya Liu
Summary: A novel strategy for waste petroleum coke valorization was proposed by activating and preparing petroleum coke derived catalyst, which exhibited superior catalytic performance in tar destruction. Results showed that the petroleum coke derived catalyst demonstrated good resistance to coke deposition under H2 and steam atmospheres.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Thermodynamics
Tianhong Zhou, Lichao Ge, Qian Li, Long Yang, Longhui Mai, Jing Huang, Yang Wang, Chang Xu
Summary: Isothermal pyrolysis experiments were conducted to optimize the utilization of petroleum coke. Combustion characteristics and gasification properties of petroleum coke and its semi-coke were investigated. Results showed that gas production increased with higher pyrolysis temperatures. The graphitization degree of semi-coke showed a decreasing and then increasing trend, reaching its lowest at 650 degrees C. Combustion performance improved with increased oxygen concentration, while gasification rate was higher for semi-coke than petroleum coke.
Review
Energy & Fuels
Ben Wang, Wei Li, Chuan Ma, Wu Yang, Deepak Pudasainee, Rajender Gupta, Lushi Sun
Summary: This paper summarizes the synergistic effects of co-gasification of petroleum coke (PC) with various carbon-based feedstocks on gasification reactivity, syngas production, and mineral transformation. The key parameters and approaches affecting the synergy are discussed, and the two main synergy mechanisms are explored. Suggestions for improving syngas quality and dealing with emerging feedstocks are provided.
JOURNAL OF THE ENERGY INSTITUTE
(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
Hong Nam Nguyen, Duy Anh Khuong, Phuong Lan Tran-Nguyen, Toshiki Tsubota
Summary: This study investigates the evolution of char characteristics during bagasse gasification, highlighting the suitability of bagasse for gasification due to its low ash content, high heating value, and fast char conversion rate. The gasified chars exhibit high porosity and have the potential to be used as an alternative to expensive commercial activated carbons. The findings of this study are significant for addressing challenges in the industrialization of biomass gasification.
BIOMASS & BIOENERGY
(2022)
Article
Green & Sustainable Science & Technology
Juntao Wei, Yan Gong, Qinghua Guo, Xueli Chen, Lu Ding, Guangsuo Yu
Article
Energy & Fuels
Juntao Wei, Qinghua Guo, Lu Ding, Yan Gong, Junqin Yu, Guangsuo Yu
Article
Agricultural Engineering
Qing He, Lu Ding, Yan Gong, Weifeng Li, Juntao Wei, Guangsuo Yu
BIORESOURCE TECHNOLOGY
(2019)
Article
Energy & Fuels
Alexander Mosqueda, Juntao Wei, Katleya Medrano, Hazel Gonzales, Lu Ding, Guangsuo Yu, Kunio Yoshikaw
Article
Chemistry, Analytical
Qing He, Qinghua Guo, Lu Ding, Juntao Wei, Guangsuo Yu
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2019)
Article
Engineering, Chemical
Qinghua Guo, Yuchen Huang, Yan Gong, Juntao Wei, Guangsuo Yu
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2020)
Article
Agricultural Engineering
Qing He, Qinghua Guo, Lu Ding, Juntao Wei, Guangsuo Yu
BIORESOURCE TECHNOLOGY
(2019)
Article
Thermodynamics
Qing He, Junqin Yu, Xudong Song, Lu Ding, Juntao Wei, Guangsuo Yu
Article
Energy & Fuels
Juntao Wei, Xudong Song, Qinghua Guo, Lu Ding, Kunio Yoshikawa, Guangsuo Yu
Article
Energy & Fuels
Jiajian Wang, Xia Liu, Qinghua Guo, Juntao Wei, Xueli Chen, Guangsuo Yu
Article
Engineering, Chemical
Juntao Wei, Lu Ding, Yan Gong, Qinghua Guo, Yifei Wang, Guangsuo Yu
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2020)
Article
Chemistry, Applied
Yin Xu, Baosheng Jin, Hejia Jiang, Lixiang Li, Juntao Wei
FUEL PROCESSING TECHNOLOGY
(2020)
Article
Environmental Sciences
Juntao Wei, Jiawei Sun, Deliang Xu, Lei Shi, Miao Wang, Bin Li, Xudong Song, Shu Zhang, Hong Zhang
Summary: This study utilized hydrothermal pretreatment to synthesize carbon material from bio-oil, and achieved improved conductivity and capacitance by doping and activation using urea and KOH. The prepared nitrogen-doped activated hydrothermal carbon (NAHC(1)) showed good electrochemical performance with a capacitance of 225.4 F/g at 1 A/g, which was 3.8 times higher than that of the hydrothermal char (HC).
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Article
Energy & Fuels
Junqin Yu, Yan Gong, Juntao Wei, Lu Ding, Xudong Song, Guangsuo Yu
JOURNAL OF THE ENERGY INSTITUTE
(2020)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.
