Article
Energy & Fuels
Shouxi Jiang, Laihong Shen, Jingchun Yan, Xin Niu, Bin Hu
Summary: The study investigated Cu-Fe bimetallic oxygen carriers (OCs) supported by SiO2, Al2O3, or hematite in a fluidized-bed reactor. It was found that CuFe-He and CuFe-Al OCs performed better than CuFe-Si OC, with the latter leading to deactivation due to irreversible interaction. Hematite was identified as an excellent support candidate for manufacturing Cu-Fe OCs. Additionally, maintaining a high O/C ratio and increasing reaction temperature above 850 degrees C promoted coal conversion efficiency in chemical looping combustion.
Article
Engineering, Environmental
Amr Abdalla, Mansour Mohammedramadan Tijani, Mohanned Mohamedali, Nader Mahinpey
Summary: This study investigated the effects of introducing WO3 into NiO/ZrO2 oxygen carriers for methane CLC, and found that the dual metal oxide oxygen carriers exhibited enhanced oxygen capacity and lower carbon formation compared to their monometallic counterparts. The introduction of WO3 into the NiO/ZrO2 lattice structure led to the formation of an intermediate phase (NiWO4) which improved oxygen carriers' reducibility and metal dispersion. Impregnation synthesis method showed superior performance in terms of cyclic stability and coking resistance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Yanhui Long, Zhenhua Gu, Shen Lin, Kun Yang, Xing Zhu, Yonggang Wei, Hua Wang, Kongzhai Li
Summary: Chemical looping combustion is a new combustion technology that can generate electricity and capture carbon dioxide for the long term. Research indicates that monolithic oxygen carriers exhibit better adaptability at high flow rates, and combining different orders of oxygen carriers can significantly enhance CH4 conversion and CO2 selectivity.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Energy & Fuels
Fang Liu, Weiliao Kang, Chen Song, Zhixuan Jia, Wenbin Chen, Li Yang
Summary: This study conducted experiments to investigate the attrition behavior of an iron-based oxygen carrier under different conditions in chemical looping combustion, revealing the importance of chemical stress on attrition and proposing the attrition mechanism of the oxygen carrier. The results show a dynamic increase process of contribution of chemical stress to attrition and a dominance of chemical stress after a certain number of cycles, indicating the significance of understanding and managing chemical stress in optimizing the performance of chemical looping combustion systems.
Article
Engineering, Environmental
Xianming Cheng, Zhenhua Gu, Fashe Li, Xing Zhu, Yonggang Wei, Min Zheng, Dong Tian, Hua Wang, Kongzhai Li
Summary: Chemical-looping combustion (CLC) is a promising technology for CO2 capture with low energy consumption, but carbon deposition from methane poses a challenge. This study investigated carbon formation behaviors of four typical oxygen carriers (OCs) and proposed a strategy to eliminate carbon by arranging them in a fixed-bed reactor. The findings show that NiO/ZrO2 OC is prone to carbon formation, while CuO/SiO2 OC has high CH4 conversion and minimal carbon formation. Mixing these OCs in a suitable sequence can significantly enhance CLC efficiency and resistance to carbon deposition.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Xingyun Li, Zhishan Li, Chunqiang Lu, Danyang Li, Zhiqiang Li, Jian Gao, Jiali Wei, Kongzhai Li
Summary: This study proposes a modified NiO/LaFeO3 oxygen carrier to enhance the activity of lattice oxygen in methane partial oxidation. The results demonstrate that the loading of Ni has a significant impact on methane conversion rate and product selectivity, and 5 wt% Ni/ LaFeO3 oxygen carrier exhibits higher methane conversion rate and CO selectivity.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Li Yang, Wenbin Chen, Chen Song, Caifu Li, Jinlong Chen, Xi Zhang, Fang Liu
Summary: Chemical looping combustion (CLC) is a technique that utilizes oxygen carriers (OCs) to transfer oxygen and heat between fuel reactor and air reactor. The attrition of OCs is a major impediment to the large-scale application of CLC technology. In this study, the effects of different biomass ashes on the reactivity and attrition resistance of red mud OCs were investigated. The results showed that the rape straw ash promoted the reactivity of OCs, while the bagasse ash improved the attrition resistance. The corn straw ash was found to be an effective material for strengthening the skeleton structure of OCs, enhancing both reactivity and attrition resistance.
Article
Thermodynamics
Li Yang, Caifu Li, Chen Song, Dan Zhu, Jiangyuan Zhao, Fang Liu, Xiaorui Liu
Summary: The migration path of the oxygen carrier plays a crucial role in the reaction rate of chemical looping combustion technology. In this study, the oxygen migration paths of different lattice structures were studied using density functional theory, and their kinetic parameters and activation energy changes were explored.
Article
Engineering, Environmental
Chunqiang Lu, Rongrong Deng, Ruidong Xu, Yannan Zhao, Xing Zhu, Yonggang Wei, Kongzhai Li
Summary: The CeO2/MnCo2O4 oxygen carrier significantly improves the redox stability for methane combustion in Chemical Looping Combustion (CLC). Among different compositions, the 10% CeO2/MnCo2O4 sample shows the highest stability during successive CLC testing, with a methane combustion capacity of 2.22 mmol/g and average methane conversion rate of over 90%.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
M. de las Obras Loscertales, A. Abad, F. Garcia-Labiano, L. F. de Diego, P. Gayan, J. Adanez
Summary: Four different physico-chemical characteristics of Ca-based sorbents were evaluated as suitable precursors for CaSO4-based oxygen carriers in CLC systems.
Article
Energy & Fuels
Barnali Bhui, Banabir Das, V Prabu
Summary: Electronic waste poses a serious threat to the environment, but the metals and polymers in PCB boards can be used as potential oxygen carriers in the chemical looping combustion process. Experimental studies demonstrate the feasibility of utilizing PCB based oxygen carriers in CLC for environmental sustainability.
Article
Energy & Fuels
Ivan Gogolev, Toni Pikkarainen, Juho Kauppinen, Carl Linderholm, Britt-Marie Steenari, Anders Lyngfelt
Summary: Chemical looping combustion (CLC) of biomass is a promising technology for power generation with integrated carbon capture, but the alkali content of biomass may lead to bed agglomeration and oxygen carrier absorption issues. Studies have shown that gas-phase alkali emissions in CLC operation can be up to 15 times higher than in OCAC operation, mainly due to steam accelerating the decomposition of alkali compounds in the biomass.
Article
Engineering, Environmental
Clemens F. Patzschke, Matthew E. Boot-Handford, Qilei Song, Paul S. Fennell
Summary: The study found that copper manganese spinel oxides are promising oxygen carriers for the CLOU and CLAS processes due to their high O-2 release capacity and fast release kinetics. Material properties of oxygen carriers can be improved by adjusting Cu:Mn ratios and synthesis conditions to optimize performance. After extended cycling tests, the oxygen carriers showed excellent stability and high resistance to attrition.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Yanan Wang, Hengfeng Bu, Haibo Zhao, Kunlei Liu
Summary: Solid fuel chemical looping gasification technology requires the development of low-cost, easily available oxygen carrier particles, with Cu/Fe-based OCs from waste ore particles and bauxite residues showing promise for coal gasification. Among these OCs, red mud and Cu20Fe80@C exhibit better gasification performance and potential for Fischer-Tropsch synthesis and H-2-rich chemical synthesis. The study also reveals the importance of lattice oxygen donation capacity and alkali metal content in determining coal and char gasification rates.
Article
Chemistry, Applied
Amr Abdalla, Mohanned Mohamedali, Nader Mahinpey
Summary: Continuing increase in atmospheric CO2 concentrations has had significant negative impacts on the environment, prompting research efforts to find alternative energy sources to replace fossil fuels. Chemical looping combustion (CLC) has emerged as a promising technology for CO2 capture, and the development of efficient oxygen carriers is crucial for its success. This work provides a comprehensive overview of the advancements in synthetic metal oxide-based oxygen carriers over the past seven years, along with key performance indicators used for evaluation. The review focuses on the development of oxygen carriers such as Ni, Cu, Fe, Mn, Co-based metal oxides, and outlines the challenges, research needs, and opportunities for future progress in this field.
Article
Energy & Fuels
Xiaoyun Li, Anders Lyngfelt, David Pallares, Carl Linderholm, Tobias Mattisson
Summary: This study investigates the effect of volatile distributor on the lateral distribution of volatiles in a fluidized bed under different operational conditions. The results show that a volatile distributor with uneven hole arrangements can provide a more uniform horizontal distribution of volatiles, suitable for different fluidization regimes.
Article
Engineering, Environmental
Daofeng Mei, Amir H. Soleimanisalim, Anders Lyngfelt, Henrik Leion, Carl Linderholm, Tobias Mattisson
Summary: Manganese ore EB exhibits higher reactivity with syngas but lower reaction rate with CH4 compared to other manganese ores. Improving the contact between volatiles and bed material is crucial for enhancing combustion performance in the CLC process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Nasrin Nemati, Yukari Tsuji, Tobias Mattisson, Magnus Ryden
Summary: This study investigated the conversion of gaseous fuels during chemical looping combustion (CLC) in a packed fluidized reactor. The use of packings was found to improve the fuel conversion by enhancing gas-solid mass transfer, mainly due to the reduced bubble size. The results were consistent for different fuels, packings, and bed heights.
Article
Energy & Fuels
Daofeng Mei, Anders Lyngfelt, Henrik Leion, Carl Linderholm, Tobias Mattisson
Summary: Alkali is a problematic component in biomass combustion and chemical looping combustion using biomass fuels. This study investigated the interaction between alkali and an oxygen carrier by adding alkali salts to impregnated charcoal particles. The experiments showed that using alkali-impregnated charcoal led to partial agglomeration and defluidization, with the use of K-charcoal resulting in faster agglomeration/defluidization compared to Na-charcoal. Partial agglomeration could be due to surface melting of the braunite particles, while the formation of a low-melting-point Na-Si-Ca system could be responsible for agglomeration in Na-charcoal experiments. The concentration of alkali in the braunite bed increased with the use of alkali charcoals, but the reactivity of the used braunite was hardly affected.
Article
Energy & Fuels
Ivana Stanicic, Rainer Backman, Yu Cao, Magnus Ryden, Jesper Aronsson, Tobias Mattisson
Summary: Oxygen Carrier Aided Combustion (OCAC) is a novel approach for burning waste in a fluidized bed. This study analyzed solid samples from an industrial OCAC application using municipal solid waste and ilmenite as the oxygen carrier. The presence of oxygen carriers was found to influence the ash chemistry and the distribution of elements throughout the particle cross-section. The results provide valuable insights into the solid-state chemistry and fate of important elements.
Article
Energy & Fuels
Tharun Roshan Kumar, Tobias Mattisson, Magnus Ryden
Summary: This study presents a techno-economic analysis of biofuel production using Fischer-Tropsch synthesis (FTS) as the primary gasification process. The results show that off-gas recirculation significantly reduces the production costs of FT crude, and the hot-gas cleanup process configuration has higher energy efficiency and lower production costs compared to the cold-gas cleanup process configuration.
Article
Energy & Fuels
Ivana Stanicic, Joakim Brorsson, Anders Hellman, Tobias Mattisson, Rainer Backman
Summary: Chemical looping combustion (CLC) enables efficient combustion of hydrocarbon fuels while producing a gas stream with high CO2 concentrations. This paper investigates the fate of ash elements in a system using iron-based oxygen carriers and provides a comprehensive comparison with previous experimental data. The study finds that the choice of oxygen carriers significantly influences the behavior of ash elements.
Article
Engineering, Chemical
Xiaoyun Li, Anders Lyngfelt, Carl Linderholm, Bo Leckner, Tobias Mattisson
Summary: By introducing internal baffles, the volatiles distributor (VD) has been improved to achieve a more uniform distribution of gas and reduce volatiles slip, thereby improving gas-solid contact. The results show that the internal baffles significantly enhance the uniformity of the horizontal distribution, particularly in the single and multiple bubble regimes.
Article
Green & Sustainable Science & Technology
Pietro Bartocci, Alberto Abad, Tobias Mattisson, Arturo Cabello, Margarita de las Obras Loscertales, Teresa Mendiara Negredo, Mauro Zampilli, Andrea Taiana, Angela Serra, Inmaculada Arauzo, Cristobal Cortes, Liang Wang, Oyvind Skreiberg, Haiping Yang, Qing Yang, Wang Lu, Yingquan Chen, Francesco Fantozzi
Summary: Carbon Capture and Storage (CCS) is essential for achieving Sustainable Development Goals 7 and 5. Chemical Looping Combustion (CLC) is a cost-effective method for capturing CO2. This review aims to summarize key highlights in the field and propose an optimization procedure for designing pressurized chemical looping reactors coupled with turbo expanders for power production with carbon negative emissions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Fredrik Hildor, Amir H. Soleimanisalim, Martin Seemann, Tobias Mattisson, Henrik Leion
Summary: This study investigates the effect of using steel converter slag as an oxygen-carrying bed material on tar species generated in a dual fluidized bed biomass gasifier. The findings suggest that steel converter slag possesses catalytic properties, resulting in a decreased ratio of heavy tar components compared to ilmenite and sand. Temperature and fuel load have a significant effect on tar generation compared to the circulation and steam ratio.
Article
Energy & Fuels
Inaki Adanez-Rubio, Tobias Mattisson, Marijke Jacobs, Juan Adanez
Summary: Chemical Looping with Oxygen Uncoupling (CLOU) is a technology that separates the oxygen for fuel combustion using an oxygen carrier in a fuel reactor. This study investigates the behavior of Mn/Mg/Si system as oxygen carriers for CLOU. The most reactive oxygen carriers without Si in the structure were found to be M24Mg76 and M48Mg51. These carriers showed good reactivity and mechanical stability in a batch fluidized bed reactor.
Article
Energy & Fuels
Victor Purnomo, Ivana Stanicic, Daofeng Mei, Amir H. Soleimanisalim, Tobias Mattisson, Magnus Ryden, Henrik Leion
Summary: Iron sand, a by-product of the industry, has a reasonable iron content and low cost. It has been found that iron sand can be used as an oxygen carrier in chemical looping gasification (CLG), with an oxygen transfer capacity lower than ilmenite. Utilizing iron sand leads to higher conversion rates of pine forest residue char to CO and H2 compared to ilmenite. The study also presents novel findings on the crystalline phase transformation of iron sand at different oxidation levels.
Article
Chemistry, Applied
Muhammad Nauman Saeed, Mohammad Shahrivar, Gajanan Dattarao Surywanshi, Tharun Roshan Kumar, Tobias Mattisson, Amir H. Soleimanisalim
Summary: The second-generation bio aviation fuel production via Chemical Looping Gasification (CLG) combined with downstream Fischer-Tropsch (FT) synthesis is a possible way to decarbonize aviation sector. This study models the full chain process of biomass to liquid fuel (BtL) with LD-slag and Ilmenite as oxygen carriers using Aspen Plus software, validates the results with experiments, and conducts a techno-economic analysis of the process.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Energy & Fuels
Fredrik Hildor, Tobias Mattisson, Carl Linderholm, Henrik Leion
Summary: This study investigates the effect of adding small amounts of more reactive elements into steel converter slag, which improves its reactivity towards CO and CH4, and increases the conversion rate of benzene.
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Daofeng Mei, Anders Lyngfelt, Henrik Leion, Tobias Mattisson
Summary: Chemical looping combustion (CLC) is a technology that can generate heat and power while capturing CO2. Using biomass in CLC (bio-CLC) allows for negative CO2 emissions. This study investigates the interaction between alkalis in biomass and the process, focusing on charcoal impregnated with alkali chlorides. The results show that impregnation with alkalis improves the gasification rate, with carbonates resulting in earlier and more permanent defluidization compared to chlorides. Partial agglomeration and retention of alkalis in the oxygen carrier are observed, with similar reactivity noticed with CH4 and H2.