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
Energy & Fuels
Ratnakumar V. Kappagantula, Gordon D. Ingram, Hari B. Vuthaluru
Summary: Chemical Looping Combustion technologies have the ability to capture carbon dioxide and are modeled using a specialized Fluidized Bed Reactor block in Aspen Plus. Sensitivity studies showed that solid volume fraction decreases with bed height and superficial velocity, while the height to diameter ratio of the fluidized bed is an important variable in reactor design.
Article
Energy & Fuels
Jingchun Yan, Tianxu Shen, Peng Wang, Xianglei Yin, Xiao Zhu, Shouxi Jiang, Laihong Shen
Summary: An innovative fluidized bed thermogravimetric analyzer was designed to study the performance of oxygen carriers in chemical looping combustion processes, revealing that high-grade manganese ore with less silicon content is more suitable for industrial CLC pilots.
Article
Chemistry, Applied
Nasrin Nemati, Magnus Ryden
Summary: The study investigated chemical-looping combustion in a packed-fluidized bed reactor and found that fuel conversion is greatly influenced by oxygen carrier bed height and the type of packing used. Using different types of packing can significantly improve fuel conversion efficiency, with different packings yielding different effects.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Applied
Qi Hong, Peng Wang, Ziying Chen, Zhen Huang, Laihong Shen, Tao Song
Summary: Red mud shows low reactivity with methane and better reactivity with biomass char. It exhibits stable reactivity during oxygen carrier cycles, but tends to agglomerate during methane fluidized bed experiments.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Energy & Fuels
Petteri Peltola, Falah Alobaid, Tero Tynjaelae, Jouni Ritvanen
Summary: This article provides a brief review of the modeling of chemical looping combustion (CLC), a next-generation CO2 capture technology, in bubbling and circulating fluidized bed reactors. The article presents a summary of published mathematical reactor models, with a focus on a macroscopic modeling approach that combines transport equations with semiempirical correlations to describe key fluidized bed phenomena. The article highlights important aspects to be considered in the modeling of CLC in a dual fluidized bed reactor system and identifies research needs. So far, semiempirical reactor models have been validated based on experimental results, but there is limited research on dynamic process simulation of CLC.
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
Green & Sustainable Science & Technology
Birgitta Narindri Rara Winayu, Chun-Ta Li, Hsin Chu
Summary: Calcined ilmenite was used as an oxygen carrier in chemical looping combustion (CLC) and achieved high conversion rates. Increasing syngas concentration, operating temperature, and superficial velocity improved the reaction rate and oxygen carrier utilization, but the application of CO and CH4 caused carbon deposition and surface blocking. High redox cycles had a negative effect on the performance of the oxygen carrier.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Multidisciplinary
Birgitta Narindri Rara Winayu, Bing -Hong Li, Hsin Chu
Summary: This study investigates the application of 40% Fe2O3/TiO2 as an oxygen carrier in chemical looping combustion (CLC) technology and examines the factors influencing its reaction rate. The experimental results demonstrate that higher reaction rates and utilization values can be achieved by increasing superficial velocity, operating temperature, and the concentration of CO or H-2 under different operating conditions.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Cetera Chen, Seng-Rung Wu, Ching-Ti Kao
Summary: This study aimed to develop a fluidized-bed chemical looping system using BOF slag as an oxygen carrier and methane as a fuel to produce heat for the steelmaking process. The experimental results indicated that the methane conversion rate increased with an increase in the methane concentrations and the reaction temperature.
Article
Chemistry, Physical
Rei-Yu Chein, Wei-Feng Tseng, Keng-Tung Wu
Summary: Chemical-looping combustion (CLC) is a promising technique for capturing carbon dioxide efficiently and economically. This study uses numerical simulation to compare the performance of conventional bubbling fluidized bed (BFB) fuel reactor and internal circulation bubbling fluidized bed reactor (ICBFB). The results show that the use of ICBFB can enhance the reduction reaction by increasing particle circulation and improving mixing and contact time between fuel and oxygen carrier.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jie Yang, Erlend Bjorgum, Hui Chang, Ka-Ke Zhu, Zhi-Jun Sui, Xing-Gui Zhou, Anders Holmen, Yi-An Zhu, De Chen
Summary: Research has shown that the dynamic nature of active sites on La-Fe-based perovskites in chemical looping methane oxidation is influenced by the Fe coordination environment (and hence the oxygen vacancy concentration), which is the key parameter governing the catalyst selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Energy & Fuels
Anders Lyngfelt, David Pallares, Carl Linderholm, Fredrik Lind, Henrik Thunman, Bo Leckner
Summary: Chemical looping combustion (CLC) has the potential to avoid the high costs and energy penalties of existing CO2 capture technologies. It transfers oxygen to the fuel using an oxygen carrier, separating air and fuel. This results in separate streams of CO2 and H2O, with relatively pure CO obtained after condensation of H2O. The circulation of oxygen and heat to the fuel reactor is crucial in CLC, which is typically a dual fluidized bed process. While many oxygen carriers have been successfully used in pilot operation, little consideration has been given to achieving sufficient circulation in an industrial-scale system.
Article
Thermodynamics
Junjie Lin, Liyan Sun, Kun Luo, Dali Kong, Jianren Fan
Summary: In this study, three-dimensional simulations were used to investigate the flow behavior and reaction characteristics of a chemical looping combustion system. The numerical models developed in this work can be utilized for system design and scale-up, and the operating temperature and solid inventory have significant effects on system performance.
Article
Energy & Fuels
Tobias Proell, Anders Lyngfelt
Summary: The combination of chemical-looping combustion (CLC) and steam methane reforming (SMR) is a promising method for CO(2) capture and hydrogen production. By optimizing the dimensions of the SMR tube, it is possible to improve the performance and reduce the necessary tube length. Simulation results show that using smaller tube diameters can significantly decrease the required tube length for equivalent gas conversion.
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
Tharun Roshan Kumar, Tobias Mattisson, Magnus Ryden, Viktor Stenberg
Summary: This article presents the process modeling of the chemical looping gasification (CLG) process for syngas production and its integration with the Fischer-Tropsch synthesis (FTS) process. The CLG-FT process plant achieves high energy content, low CO2 emissions, and the potential to capture biogenic CO2.
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.