Article
Energy & Fuels
Huan Zhou, Guoqiang Wei, Qun Yi, Zheming Zhang, Yingjie Zhao, Yuke Zhang, Zhen Huang, Anqing Zheng, Kun Zhao, Zengli Zhao
Summary: Chemical looping gasification (CLG) of Yunnan lignite with Fe-Mn mixed oxygen carriers (OCs) was conducted to produce high-purity synthesis gas and reduce pollutant emissions. The Fe-Mn composite OCs exhibited oxygen decoupling characteristics and synergistic effects between active components, making them suitable for the gasification process.
Article
Energy & Fuels
Zhiyu Li, Xiaoshan Dong, Beibei Yan, Jian Li, Jian Wang, Liguo Jiao, Guanyi Chen, Sarwaich Ahmed, Yan Cao
Summary: This study investigates the crucial properties of oxygen carriers (OC) in chemical looping gasification and finds that LaCu0.5Fe0.5O3 exhibits the best gasification performance. The stability of OC is also evaluated through cyclic experiments.
Review
Chemistry, Multidisciplinary
Nhut Minh Nguyen, Falah Alobaid, Paul Dieringer, Bernd Epple
Summary: Biomass gasification is a promising renewable energy source that can replace fossil fuels, but faces challenges such as tar formation and low efficiency. Chemical looping gasification is considered a suitable pathway for producing valuable products from biomass. The review paper provides insights into the recent developments of biomass-based chemical looping gasification process.
APPLIED SCIENCES-BASEL
(2021)
Article
Thermodynamics
Min Li, Laizhi Sun, Lei Chen, Hongqing Feng, Baofeng Zhao, Shuangxia Yang, Xinping Xie, Xiaodong Zhang
Summary: The combination of Fe2O3 and CaO as oxygen carriers showed the best activity for chemical looping gasification of biomass. The maximum syngas yield was achieved at a sawdust:Fe2O3:CaO mass ratio of 2:2:1 and a reaction temperature of 850 degrees C. Fe2O3 provided oxygen for gasification, while CaO absorbed CO2 and catalyzed reactions, showing good cycling characteristics.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Environmental
Shuang Liang, Yanfen Liao, Weijie Li, Changxin Li, Xiaoqian Ma
Summary: This study investigates the application of core-shell structure oxygen carriers in biomass tar gasification and demonstrates their high-efficiency and clean characteristics. Under suitable conditions, the oxygen carriers significantly increase gas yield and carbon conversion efficiency. Moreover, they maintain stable performance even after cyclic experiments, indicating their potential as promising materials for chemical looping gasification.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Cao Kuang, Shuzhong Wang, Song Lv, Jianjun Cai, Ming Luo, Jun Zhao
Summary: Cu-based oxygen carriers modified by iron ore and chrysotile showed enhanced performance in in-situ gasification and chemical-looping with oxygen uncoupling processes, improving energy conversion efficiency, stability, and high-temperature tolerance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Ivan Sampron, Arturo Cabello, Francisco Garcia-Labiano, Maria T. Izquierdo, Luis F. de Diego
Summary: Biomass chemical looping gasification (BCLG) is a promising technique for producing renewable syngas with negative carbon emissions. In this study, a Cu-based oxygen carrier, Cu14Al_ICB, was tested for 45 hours using pine sawdust as fuel. Factors such as the oxygen-to-fuel ratio and gasification temperature were found to affect the syngas composition and gasification parameters. The Cu14Al_ICB oxygen carrier demonstrated excellent performance in terms of syngas yield, char gasification, tar removal, and mechanical properties throughout the experiment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Nhut M. Nguyen, Falah Alobaid, Bernd Epple
Summary: Iron-based oxygen carriers are a promising option for chemical looping gasification to produce syngas. Increasing operating parameters can enhance process performance, and there are differences in performance between iron ore and ilmenite under different conditions.
Article
Thermodynamics
Genyang Tang, Jing Gu, Zhen Huang, Haoran Yuan, Yong Chen
Summary: Biomass-derived chemical looping gasification (BCLG) utilizes Ca-Fe oxygen carriers as catalysts to promote efficient lignocellulose conversion and hydrogen-enriched syngas production. Experimental results demonstrate the reaction mechanisms and synergistic effects of Ca-Fe oxygen carriers at different temperatures, providing insights for explaining their performance.
Article
Thermodynamics
Ivan Sampron, Luis F. de Diego, Francisco Garcia-Labiano, Maria T. Izquierdo
Summary: The study found that controlling the oxygen supply to the air reactor by the air flow resulted in higher syngas yield compared to controlling the oxygen supply to the fuel reactor by the oxygen carrier circulation flow. Analysis of different operating parameters was also conducted, emphasizing the advantages of using OCM-1.
Article
Energy & Fuels
Laixing Luo, Xing Zheng, Jianye Wang, Wu Qin, Xianbin Xiao, Zongming Zheng
Summary: In this study, biomass chemical looping gasification with Fe2O3 as the oxygen carrier was used for the production of hydrogen, with ethanol as the probe reaction to reveal the decomposition mechanism. The results showed that the degree of reduction of the Fe2O3(001) surface had a significant effect on the catalytic decomposition of ethanol into synthesis gas, indicating the importance of understanding the CLG reaction mechanism on perfect and reduced OC surfaces.
Article
Energy & Fuels
Siqi Liu, Fang He, Kun Zhao, Haibo Zhao, Zhen Huang, Guoqiang Wei, Wen Yang
Summary: Coal chemical looping gasification (CCLG) is a promising technology with high resource utilization rate and environmental protection properties, requiring suitable oxygen carriers and optimized operating conditions for coal conversion and H2&CO production. This study tested a Cu-Fe bi-ore oxygen carrier and found that the optimal gasification conditions were at 950 degrees C with a oxygen carrier-to-coal mass ratio of 3:1 and steam rate of 0.08 ml/min, achieving a syngas yield of 58 mmol/g, 75.2% syngas selectivity, and 85.3% carbon conversion.
Article
Agricultural Engineering
Guang Li, Shuqi Ma, Fan Liu, Xing Zhou, Kai Wang, Yulong Zhang
Summary: The research focuses on the life cycle water footprint of producing syngas through chemical looping gasification of corn straw and wheat straw, showing that crop growth stage and different allocation methods significantly impact total water consumption. Sensitivity analysis suggests that water consumption of crop yield and growth can have opposite effects on water consumption efficiency.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Applied
Oscar Condori, Francisco Garcia-Labiano, Luis F. de Diego, Maria T. Izquierdo, Alberto Abad, Juan Adanez
Summary: Biomass Chemical Looping Gasification using LD slag as an oxygen carrier can produce high quality syngas from various types of biomass under autothermal conditions, without agglomeration issues.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Agricultural Engineering
Jianjun Hu, Tianpeng Zhang, Quanguo Zhang, Xiaoyu Yan, Shuheng Zhao, Jiatao Dang, Wei Wang
Summary: The study used CaO/Fe2O3 as a composite oxygen carrier for biomass chemical looping gasification (CLG), showing that adding CaO can significantly improve the quality of syngas and reduce greenhouse gas emissions. Various factors such as the ratio of Fe2O3 to CaO, steam to biomass, and oxygen carrier to biomass were found to affect the syngas composition, with temperature also playing a significant role in CLG gas yield. The possible reaction mechanism suggested that variations in Ca may be the main factor in gas composition fluctuation.
BIORESOURCE TECHNOLOGY
(2021)
