Relevant bibliographies by topics / Chemical looping technology

Academic literature on the topic 'Chemical looping technology'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Chemical looping technology"

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Fan, Liang-Shih, Liang Zeng, and Siwei Luo. "Chemical-looping technology platform." AIChE Journal 61, no. 1 (December 4, 2014): 2–22. http://dx.doi.org/10.1002/aic.14695.

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Luo, Siwei, Liang Zeng, and Liang-Shih Fan. "Chemical Looping Technology: Oxygen Carrier Characteristics." Annual Review of Chemical and Biomolecular Engineering 6, no. 1 (July 24, 2015): 53–75. http://dx.doi.org/10.1146/annurev-chembioeng-060713-040334.

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Bayham, Samuel C., Andrew Tong, Mandar Kathe, and Liang-Shih Fan. "Chemical looping technology for energy and chemical production." Wiley Interdisciplinary Reviews: Energy and Environment 5, no. 2 (April 21, 2015): 216–41. http://dx.doi.org/10.1002/wene.173.

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Poelman, Hilde, and Vladimir V. Galvita. "Intensification of Chemical Looping Processes by Catalyst Assistance and Combination." Catalysts 11, no. 2 (February 17, 2021): 266. http://dx.doi.org/10.3390/catal11020266.

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Chemical looping can be considered a technology platform, which refers to one common basic concept that can be used for various applications. Compared with a traditional catalytic process, the chemical looping concept allows fuels’ conversion and products’ separation without extra processes. In addition, the chemical looping technology has another major advantage: combinability, which enables the integration of different reactions into one process, leading to intensification. This review collects various important state-of-the-art examples, such as integration of chemical looping and catalytic processes. Hereby, we demonstrate that chemical looping can in principle be implemented for any catalytic reaction or at least assist in existing processes, provided that the targeted functional group is transferrable by means of suitable carriers.
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Gao, Xiao Ning, Hui Min Xue, Yuan Li, and Xue Feng Yin. "Comparison of Chemical-Looping with Oxygen Uncoupling and Chemical-Looping Combustion Technology Reaction Mechanism." Advanced Materials Research 955-959 (June 2014): 2261–66. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2261.

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In order to reduce the emission of CO2and control the global greenhouse effect, the paper introduces and compares two new technologies named chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) that are both high-efficient and clean. Through comparative analysis, CLC has been widely studied because of its direct separation of CO2, reduction loss of the heat, improvement of energy efficiency and avoiding of the generation of fuel type NOxin the combustion process. Besides the current research for metal oxygen carrier, there are some scholars find various non-metal oxygen carriers that have the better performance in CLC. But the study on reactors of CLC is still not mature, especially the solid fuel reactor, which is different from CLOU. In a certain sense, CLOU is an improved technology based CLC, besides the bove advantages, it also can react with coal directly. Many scholars use coal as fuel in the fluidized bed by the technology of CLOU, and the results of them are feasible. So from this perspective, CLOU technology has more broad prospects than CLC in the China.
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De Vos, Yoran, Marijke Jacobs, Pascal Van Der Voort, Isabel Van Driessche, Frans Snijkers, and An Verberckmoes. "Development of Stable Oxygen Carrier Materials for Chemical Looping Processes—A Review." Catalysts 10, no. 8 (August 12, 2020): 926. http://dx.doi.org/10.3390/catal10080926.

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This review aims to give more understanding of the selection and development of oxygen carrier materials for chemical looping. Chemical looping, a rising star in chemical technologies, is capable of low CO2 emissions with applications in the production of energy and chemicals. A key issue in the further development of chemical looping processes and its introduction to the industry is the selection and further development of an appropriate oxygen carrier (OC) material. This solid oxygen carrier material supplies the stoichiometric oxygen needed for the various chemical processes. Its reactivity, cost, toxicity, thermal stability, attrition resistance, and chemical stability are critical selection criteria for developing suitable oxygen carrier materials. To develop oxygen carriers with optimal properties and long-term stability, one must consider the employed reactor configuration and the aim of the chemical looping process, as well as the thermodynamic properties of the active phases, their interaction with the used support material, long-term stability, internal ionic migration, and the advantages and limits of the employed synthesis methods. This review, therefore, aims to give more understanding into all aforementioned aspects to facilitate further research and development of chemical looping technology.
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Bhoje, Rutuja, Ganesh R. Kale, Nitin Labhsetwar, and Sonali Borkhade. "Chemical Looping Combustion of Methane: A Technology Development View." Journal of Energy 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/949408.

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Methane is a reliable and an abundantly available energy source occurring in nature as natural gas, biogas, landfill gas, and so forth. Clean energy generation using methane can be accomplished by using chemical looping combustion. This theoretical study for chemical looping combustion of methane was done to consider some key technology development points to help the process engineer choose the right oxygen carrier and process conditions. Combined maximum product (H2O + CO2) generation, weight of the oxygen carrier, net enthalpy of CLC process, byproduct formation, CO2emission from the air reactor, and net energy obtainable per unit weight (gram) of oxygen carrier in chemical looping combustion can be important parameters for CLC operation. Carbon formed in the fuel reactor was oxidised in the air reactor and that increased the net energy obtainable from the CLC process but resulted in CO2emission from the air reactor. Use of CaSO4as oxygen carrier generated maximum energy (−5.3657 kJ, 800°C) per gram of oxygen carrier used in the CLC process and was found to be the best oxygen carrier for methane CLC. Such a model study can be useful to identify the potential oxygen carriers for different fuel CLC systems.
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Carpenter, Chris. "Chemical-Looping Combustion: An Emerging Carbon-Capture Technology." Journal of Petroleum Technology 68, no. 07 (July 1, 2016): 85–86. http://dx.doi.org/10.2118/0716-0085-jpt.

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Miao, Zhenwu, Enchen Jiang, and Zhifeng Hu. "Review of agglomeration in biomass chemical looping technology." Fuel 309 (February 2022): 122199. http://dx.doi.org/10.1016/j.fuel.2021.122199.

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Luo, Ming, Yang Yi, Shuzhong Wang, Zhuliang Wang, Min Du, Jianfeng Pan, and Qian Wang. "Review of hydrogen production using chemical-looping technology." Renewable and Sustainable Energy Reviews 81 (January 2018): 3186–214. http://dx.doi.org/10.1016/j.rser.2017.07.007.

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Dissertations / Theses on the topic "Chemical looping technology"

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Chen, Luming. "Experimental and numerical investigation in CO2 sequestrations in chemical looping combustion." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/42844/.

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Chemical looping combustion (CLC) process is an emerging alternative to traditional CO2 mitigation technology in many industrial applications since it could produce high pure CO2 gas stream with relatively low cost. The flow occurring in the CLC is intrinsically a gas-solid two-phase flow coupled with heterogeneous reactions whilst the performance of CLC is significantly affected by the efficiency of the combustion taking place in the fuel reactor. This PhD research project investigates the application of chemical looping combustion technology for CO2 sequestrations, focusing on the hydrodynamics and chemical kinetics of the flows of the CLC in the fuel reactor. As bypass fluidised bubbles in dense phase regions of the fuel reactor remarkably affect the efficiency of combustion in the CLC, the phenomena of bubble motion are experimentally and numerically investigated first. Chapter 2 proposes a new analytical approach coupled with the adoption of auto-correlated wavelet transform to experimentally study the correlations between the detected pressure fluctuation signals obtained from a model fuel reactor in which the chemical reaction has been redundant and the occurrence of bubbles. The sub-signals of pressure fluctuations obtained can be used as the indicator to identify the occurrence of bubbles, which has been validated by the snapshots of the fluidisation patterns. Experimental results clearly show that the formed bubbles in the dense phase regions behave two distinct types, small bubbles with the characteristics of high fluctuation frequency and large bubbles with lower fluctuation frequency. The characteristic frequencies of these detected bubbles can be also identified through the analysis of the pressure fluctuation signals. In parallel to the experimental study, the applications of Computational fluid dynamics (CFD) numerical modelling to study the flow dynamic behaviour of CLC in the fuel reactor were attempted. Eulerian-Eulerian two fluid model and Eulerian-Lagrangian approach, represented by Computational fluid dynamics/Discrete element method (CFD-DEM) in the present study, were employed, respectively, to study the hydrodynamics in the fuel reactor of CLC. Chapter 3 presents the work which CFD-DEM modelling was employed to investigate the bubble hydrodynamics in the dense region of fluidised bed fuel reactor under the different inlet conditions. Correlations between the local dynamic parameters such as the pressure fluctuation, local solid volume fraction fluctuation and instantaneous velocities are introduced to detect the occurrence of the bubbles, where the bubble has been defined in terms of the volumetrically averaged local void fraction. The simulations demonstrated that these bubbles are highly correlated with the local large eddies embedded in the flow. It was also revealed that small bubbles with high by-passing frequency mainly occur in the bottom region of the fuel reactor while large bubbles with relatively lower frequency are found in the region close to the free board surface. This finding affirms that the size of bubble is highly correlated with the local dynamic field. A modified Darton’s model that uses local Reynolds number and dimensionless height ratio was thus proposed for prediction of the equivalent diameters of the formed bubbles at the given height position. In Chapters 4 and 5, Eulerian-Eulerian two-fluid CFD modelling is employed to study the hydrodynamics of the CLC coupled with the heterogeneous reaction in the fuel reactors with different configurations. Based on the simulation results, the correlation parameters that correlate the local volume fractions with the local dynamic parameters such as the pressure, velocity and temperature fluctuations were proposed, aiming at indicating the bubble occurrence in the fuel reactor where the heterogeneous reaction takes place simultaneously. The frequency of bubble occurrence at the given height position is also identified quantitatively through monitoring the time-dependant pressure fluctuations obtained from the CFD modelling. As the CLC involves heterogeneous reaction among the reactants in the fuel reactor where the oxides are reduced to the metal particles before refeeding back to the air reactor, most of the previously documented studies using CFD modelling for prediction of hydrodynamics in the fuel reactor adopted shrinking core model proposed by Szekely’s et al. (1973) but the effects of the irregularity geometry of the oxygen carriers and product-layer diffusion on the simulation have been overlooked. Thus, an improved shrinking core model that takes effects of both the irregularity geometry of the oxygen carriers and product-layer diffusion into account was proposed. Compared with the predictions using the original shrinking core model, e.g. García-Labiano et al. (2004) and Zafar et al. (2007a), the simulation results obtained by using the improved model can significantly improve the accuracy for prediction of the conversion rates. The simulations also indicate that the effect of product-layer diffusion becomes more notable with an increase in the completeness of conversion. An empirical relation is thereby proposed to describe the variations of the effect of product-layer diffusion on the oxygen carrier conversion. In summary, this dissertation contributes to the knowledge and understanding of the CLC in several aspects, in particular hydrodynamics and chemical kinetics of the flow in the fuel reactor. Firstly, a new analytical method coupled the auto-correlated wavelet transform was proposed to study the bubble formation in the dense bed region by analysing the pressure fluctuation signals. Secondly, the correlation parameters that correlate the local volume fractions with those dynamic parameters such as the pressure and velocity were introduced to predict the occurrence of bubbles at the given height position of the fuel reactor. Thirdly, the conventional shrinking core model has been improved by taking the effects of irregularity of solid particle and the product-layer diffusion into account.
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Ekpe, Ngozi Chinwe. "Novel co-precipitated oxygen carriers for chemical looping combustion of gaseous fuel." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/39557/.

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Carbon Capture and Storage (CCS) is one option to meet the increasing energy demand as well as reduce net CO2 emissions to the atmosphere. Chemical Looping Combustion (CLC) is a promising CCS technology proposed to meet the challenge of mitigating the carbon dioxide (CO2) emissions. CLC process can be based on interconnected fluidized beds, consisting of air reactor, fuel reactor and oxygen carrier (OC) which undergoes redox reactions while it circulates between the reactors. The main products are CO2 and water, thus eliminating the need of an additional energy intensive CO2 separation. The feasibility of CLC depends on the oxygen carrier's (OC) ability to transfer O2 from air reactor to fuel reactor and have sufficient oxygen capacity, high reactivity and withstand a high number of redox cycles without significant loss in performance. OCs based on transition metal oxides of Cu, Co, Fe, Mn and Ni has been explored. Nevertheless, research is focused on improving the OCs performance with the aim to overcome their various practical limitations. Mechanical mixing and impregnation which fails to provide a high degree of dispersion and high metal loading respectively are commonly used for OC synthesis. Very few works have been reported for Mn-oxide and co-precipitated oxygen carriers. The few studies on co-precipitated OCs mainly use strong base as precipitants. One drawback to this is the repetitive washing of precipitate to remove excess alkali ions and controlled loading of active components cannot be easily obtained. In this study, weak base instead of strong base was used in the synthesis of OCs. This is the first time this controlled approach has been applied to prepare oxygen carrier in CLC for manganese and iron. This thesis is a novel research on development and detailed investigation of co-precipitated Mn-oxide and Fe-oxide OCs with ZrO2 and combined ZrO2–CeO2 support. The reaction kinetics, stability and oxygen transfer capacity (OTC) of the OCs were studied by TGA up to 1173 K in H2, CO and CH4. Characterization of physical and chemical structures of particles was obtained by SEM-EDX, XRD, BET and pycnometer. The result reveals that regardless of the composition of the co-precipitated oxygen carriers, there was no interaction of the metal oxides with the support material which could have altered the thermodynamics of the redox system. Furthermore, co-precipitated Mn/Zr and Fe/Zr OCs were more reactive than their counterpart prepared by impregnation and mechanical mixing. Also, changes in reactivity and OTC suggest that the synergistic effect varies with ratios of the single oxides in the bimetallic OCs. Co-precipitated Mn-rich oxygen carriers were more reactive than Fe-rich OCs. Interestingly, OCs with zirconia-ceria support exhibited activation tendency behaviour. Moreover, the use of combined zirconia-ceria for bimetallic Mn-Fe oxide reversed the characteristic progressive decrease in the performance of the OC with equimolar composition. For co-precipitated Mn-Fe Oxide oxygen carriers, zirconia content of 44 wt. % is sufficient to maintain the mechanical integrity of the particles during redox reactions compared to a zirconia content of 20 wt. %. This research has resulted in the development of highly reactive and stable oxygen carriers, which are promising for CLC. Mn/Zr OC reached full conversion in less than 48 secs and bimetallic Mn-Fe OCs reached 30% conversion in less than 43 secs in CH4 and maintained stability in a thirty multicycle test. The redox reaction kinetics of the most reactive oxygen carrier using CH4, H2, CO and air was investigated at isothermal conditions (973-1173 K) to determine the kinetic parameters. Models of the reduction and oxidation reactions were selected by using a model fitting method. The nucleation model was the most statistically significant and suitable model for describing the reduction and oxidation behaviour of the oxygen carrier. The values of activation energy obtained for the reduction reaction in CH4, H2 and CO were 142.8 KJ/mol, 32.95 KJ/mol and 26.37 KJ/mol respectively. Whereas, for the oxidation reaction, the activation energy obtained using air was 28.83 KJ/mol. In the application of co-precipitation technique for the synthesis of multicomponent materials, a heterogeneous product could be obtained from using improper preparation conditions. Results from this research have demonstrated that, the application of the well-designed co-precipitation procedure effectively produced composite materials (up to four co-precipitated mixed metal oxides) with controlled compositions and homogeneous dispersion. Furthermore, this study provides insight into the fundamental behaviours of co-precipitated manganese and iron based oxygen carriers to aid the design and optimization of future materials development.
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Zeng, Liang. "Multiscale Study of Chemical Looping Technology and Its Applications for Low Carbon Energy Conversions." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354722135.

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Luo, Siwei. "Conversion of Carbonaceous Fuel to Electricity, Hydrogen, and Chemicals via Chemical Looping Technology - Reaction Kinetics and Bench-Scale Demonstration." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397573499.

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Baser, Deven Swapneshu. "Envisioning Catalytic Processes in Chemical Looping Systems: Material and Process Development." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586359263610608.

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Wang, Alan Yao. "Clean Coal Chemical Looping Technology: the Influence of Metal Oxide on the Thermoplasticity of Bituminous Coal and the Steam Reactivation of Metal Oxide Sorbent for CO2 Capture." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1467162960.

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Ghorbaniyan, Masoud. "Experimental Program for the validation of the design of a 150KWth Chemical looping Combustion reactor system with main focus on the reactor flexibility and operability." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14673.

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Chemical Looping Combustion is one of the most promising way to limit the CO2 release to the atmosphere among the other technologies for Carbon Capture and Storage (CCS). It constitutes an indirect fuel combustion strategy, in which metal oxide is used as oxygen carrier, to transfer oxygen from the combustion air to the fuel, avoiding direct contact between air and fuel. It is basically an unmixed combustion process (fuel and air are never mixed) whose flue gases are mainly CO2 and steam. Thus, after condensation, the carbon dioxide can be easily separated from the exhaust.SINTEF Energy Research and the Norwegian University of Science and Technology (NTNU) have designed a 150kWth second generation chemical looping combustion reactor system. It consists of a double loop circulating fluidized bed (DLCFB) reactor system where both the air reactor and the fuel reactor are Circulating Fluidized Beds (CFB) meant to work in the fast fluidization regime and interconnected by divided loop-seals and a bottom extraction to achieve high solids circulation and be flexible in operation. The main purpose of this project is to be strongly industrial oriented in order to make the step from lab-scale to industrial application easier. A Cold Flow Model (CFM) has been built to verify the design of the CLC reactor system.CFM consists of two reactors, the fuel and the air reactor, with different diameters, each one having a loop seal . No chemical reaction happens inside the CFM, because its main goal is to have the understanding of the hydrodynamics of the system.An experimental campaign was performed in order to find the best conditions for the solid flux, reaching stability, and the proper flow regimes for the coupled reactors in the CFM. An investigation and mapping of the operating area of the coupled reactors was the target of the experiments.As the first step and for further research, the best set of operating conditions is selected by considering the stability and solid flux in order to meet the design targets. This experiment is used as the reference case and later all other operational modes in the cold flow model which resembles CLC are evaluated against the base data obtained.Different operational modes of Chemical Looping Combustion were designed by means of the CFM to validate the CLC reactor system design. A significant effort was done to reach part-load , maximum power , maximum fuel reactor concentration and reforming to define the best operational window. In each of the mentioned experiments pressure profiles and concentration of the solids are compared to the reference case of the CFM.As long as the loop seal plays a key role in the operation of the CFB, for assuring the solids movement in an endless loop, series of experiments were performed in the CFM in order to map the operational window of the loop seal. The sensitivity of the loop seal is evaluated by pressure difference in the bottom of the fuel reactor and air reactor during the operation of the CFM to obtain an operational window for the loop seal. For the last step, the effects of the total mass inventory circulating in the system for five different operational modes were investigated by increasing and decreasing the inventory. For each case the pressure profiles and concentration of the solids is compared with the reference case and the results are shown in this thesis work.
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Sarafraz, Mohammad Mohsen. "Liquid chemical looping gasification." Thesis, 2019. http://hdl.handle.net/2440/119954.

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Combustion of fossil fuel for energy production is not a sustainable method since it releases CO2, particulate materials and greenhouse gases such as NOx into the atmosphere, which causes environmental pollution and global warming. Additionally, fossil fuel resources are limited, thus reliance on fossil fuels is not sustainable. To address this, special attention has recently been paid to renewable energy resources as alternatives for fossil fuels. However, it requires the development of new processes, or to integrate systems to produce energy through clean technologies aimed at the reduction of carbon dioxide emissions. One promising method is to convert fossil fuels, or biomass, to synthetic fuel referred to as “syngas”. Gasification is an established method for producing syngas from a carbonaceous fuel. The conventional gasification pathways employ air to supply the required oxygen for the reactions, however, due to the presence of the nitrogen in the gaseous products, the quality of the syngas (molar ratio of H2: CO) is relatively low. Thus, a new process for the production of syngas has been developed, referred to as a “chemical looping gasification” process, which uses solid metal oxide as the oxygen carrier. This process prevents direct contact between the feedstock and the air, addressing the challenge of the presence of nitrogen in the product. However, there are some disadvantages associated with the use of solid metal oxides, such as sintering, breakage of the particle, agglomeration and the deposition of the carbon on the oxygen carrier particles. Therefore, one potential solution to address the aforementioned challenges is to use a liquid metal oxide as an oxygen carrier instead of solid particles in a new process referred to as Liquid Chemical Looping Gasification (LCLG). To assess the LCLG system, a thermodynamic model was developed to simulate the reactions occurring in a chemical looping gasification system with a liquid metal, such as copper oxide, as the oxygen carrier. To identify other suitable oxygen carriers, a thermodynamic model and a selection procedure were also developed to assess the chemical performance of the system with various metal oxides. Copper, lead, antimony and bismuth oxides were potential options. Amongst them, lead oxide was assessed for integration of the system with a supercritical steam turbine cycle for the co-production of work and syngas. Bismuth oxide was thermodynamically and experimentally assessed for the gasification of biomass, coal and natural gas. To validate the developed models and to demonstrate the liquid chemical looping process, a series of experiments were conducted using a thermo-gravimetric analyser. Experiments were performed to assess the reduction and oxidation reactions of bismuth oxide with a graphitic carbon and air by measuring the mass change of the samples in the nitrogen and the air environments. The activation energy and reaction constant for the reduction and oxidation reactions were measured experimentally. The results obtained with the thermodynamic models for the bismuth oxide were in good agreement with those obtained with the experiments.
Thesis (Ph.D.) -- University of Adelaide, School of Mechanical Engineering, 2019
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Fu, Jun-Lin, and 傅俊霖. "Using Iron Ores as Oxygen Carriers for the Denitration Process Based on Chemical Looping Technology." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/p88pa5.

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碩士
國立臺灣科技大學
機械工程系
107
In recent years, the rapid development of thermal power generation is bound to cause potential problems. In order to supply a large amount of electricity, air pollution is followed, and nitrogen pollution is included in the air pollution. This research is to explore the technologies of carbon capture and storage. The Chemical Looping Combustion is used to carry out the denitration reaction, which can solve the problem of the air pollution without much cost. The natural iron ore, which is easily available in nature, is evaluated as an oxygen carrier material for denitration reaction. The feasibility of use in Chemical Looping Combustion. This experiment is to study the feasibility of using the iron ores oxygen carriers and the air mixed with NO to simulate the flue gas after combustion of the boiler and evaluate the denitration. The phase state of the initial iron ore oxygen carrier material is Fe2O3, and the iron ore oxygen carrier is reduced by 3 minutes and 10 minutes. The results of XRD analysis are Fe3O4 and FeO phase, followed by the fluidized bed reactor. The denitration effect of the iron ores oxygen carriers were tested by using different concentrations of NO. Finally, it’s found that the experiment is carried out with the reduced phase oxygen carrier of FeO, which can completely react with 100 ppm and 200 ppm of NO gas, There were not NO and NO2 emissions at the exhaust gas end in 10 minutes. Therefore, the denitration reaction with iron ore carrier has considerable potential.
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Cerqueira, Pedro Pereira. "Hydrogen production through chemical looping reforming of olive mill wastewater: Thermodynamic analysis and comparison with conventional process." Master's thesis, 2020. https://hdl.handle.net/10216/132810.

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Books on the topic "Chemical looping technology"

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Breault, Ronald W., ed. Handbook of Chemical Looping Technology. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.

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Breault, Ronald W. Handbook of Chemical Looping Technology. Wiley-VCH Verlag GmbH, 2018.

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Breault, Ronald W. Handbook of Chemical Looping Technology. Wiley & Sons, Incorporated, John, 2018.

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Breault, Ronald W. Handbook of Chemical Looping Technology. Wiley & Sons, Incorporated, John, 2018.

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Breault, Ronald W. Handbook of Chemical Looping Technology. Wiley & Sons, Limited, John, 2018.

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Breault, Ronald W. Handbook of Chemical Looping Technology. Wiley & Sons, Incorporated, John, 2018.

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Fennell, Paul, and Ben Anthony. Calcium and Chemical Looping Technology for Power Generation and Carbon Dioxide (CO2) Capture. Elsevier Science & Technology, 2015.

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Chemical Looping Technology for Power Generation and Carbon Dioxide Capture: Solid Oxygen- and CO2-Carriers. Elsevier Science & Technology, 2015.

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Book chapters on the topic "Chemical looping technology"

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Anthony, E. J., and R. T. Symonds. "Chemical Looping Technology." In Handbook of Climate Change Mitigation and Adaptation, 1689–723. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-72579-2_42.

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Anthony, E. J., and R. T. Symonds. "Chemical Looping Technology." In Handbook of Climate Change Mitigation and Adaptation, 1–35. New York, NY: Springer New York, 2021. http://dx.doi.org/10.1007/978-1-4614-6431-0_42-3.

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Chou, Yiang-Chen, Wan-Hsia Liu, and Heng-Wen Hsu. "Calcium Looping Carbon Capture Process." In Handbook of Chemical Looping Technology, 397–433. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch13.

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Spallina, Vincenzo, Fausto Gallucci, and Martin van Sint Annaland. "Chemical Looping Processes Using Packed Bed Reactors." In Handbook of Chemical Looping Technology, 61–92. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch3.

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Whitty, Kevin J., JoAnn S. Lighty, and Tobias Mattisson. "Chemical Looping with Oxygen Uncoupling (CLOU) Processes." In Handbook of Chemical Looping Technology, 93–122. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch4.

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Chen, Liangyong, Zhen Fan, Rui Xiao, and Kunlei Liu. "Pressurized Chemical Looping Combustion for Solid Fuel." In Handbook of Chemical Looping Technology, 123–58. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch5.

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Tong, Andrew, Mandar V. Kathe, Dawei Wang, and Liang-Shih Fan. "The Moving Bed Fuel Reactor Process." In Handbook of Chemical Looping Technology, 1–40. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch1.

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Banerjee, Subhodeep, and Ramesh K. Agarwal. "Computational Fluid Dynamics Modeling and Simulations of Fluidized Beds for Chemical Looping Combustion." In Handbook of Chemical Looping Technology, 303–32. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch10.

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Stevens Jr., Robert W., Dale L. Keairns, Richard A. Newby, and Mark C. Woods. "Calcium- and Iron-Based Chemical Looping Combustion Processes." In Handbook of Chemical Looping Technology, 333–76. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch11.

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Lighty, JoAnn S., Zachary T. Reinking, and Matthew A. Hamilton. "Simulations for Scale-Up of Chemical Looping with Oxygen Uncoupling (CLOU) Systems." In Handbook of Chemical Looping Technology, 377–96. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527809332.ch12.

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Conference papers on the topic "Chemical looping technology"

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Snijkers, Frans, Dazheng Jing, Marijke Jacobs, Lidia Protasova, Tobias Mattisson, and Anders Lyngfelt. "Chemical Looping Combustion: an Emerging Carbon Capture Technology." In Abu Dhabi International Petroleum Exhibition and Conference. Society of Petroleum Engineers, 2015. http://dx.doi.org/10.2118/177561-ms.

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Heyes, Andrew L., Loukas Botsis, Niall R. McGlashan, and Peter R. N. Childs. "A Thermodynamic Analysis of Chemical Looping Combustion." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45480.

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Recently, interest has grown in chemical looping combustion (CLC) because it is seen as a technique that may allow cost-effective carbon capture and storage (CCS). In CLC the overall reaction by which chemical energy is released is between a hydrocarbon and air as in conventional combustors. However, the reaction is completed in two separate oxidation and reduction steps occurring in different reaction vessels. In the oxidizer (or air reactor) an oxygen carrier, usually a metal, is exothermically oxidized in air resulting in an oxide and a hot air stream (oxygen depleted). The exhaust gasses may be expanded through a turbine to produce work, while the oxide passes to the reduction vessel (or fuel reactor). Here, it reacts with the fuel, is reduced and the metal regenerated. The metal then returns to the oxidizer to complete the loop. The exhaust gasses from the reducer contain only carbon dioxide and water so that, after expansion and work extraction, the water may be condensed leaving a stream of pure CO2 ready for storage. Hydrocarbon fuels will continue to be used for decades, so, in the face of ambitious emission reduction targets, CCS is an important technology and methods, such as CLC, that offer automatic CO2 separation (so-called inherent carbon capture) are particularly attractive. Despite this obvious advantage CLC was not originally conceived for the purposes of CCS, but rather as a means to produce pure carbon dioxide free from contamination by inert gases such as nitrogen. In the context of power generation it was then proposed as a means to improve the exergetic efficiency of energy conversion processes using hydrocarbons. Combustion is usually a highly irreversible process and necessitates the rejection of large quantities of heat from power cycles leading to the low thermal efficiency of gas turbines and the like. The two-stage reaction approach of CLC can reduce the irreversibility and the extent of heat rejection and hence provide improved cycle efficiency. Ideally, both goals would be simultaneously achieved thereby offsetting both the cost of carbon capture and of compression, transportation and storage. In the paper we present a thermodynamic analysis of CLC to illustrate its potential for improving efficiency. We will then develop a methodology for selecting oxygen carriers based on their thermodynamic properties and review several candidate materials. In particular, we will compare, from a thermodynamic perspective, solid phase oxygen carriers as used in fluidised bed based reaction systems and the liquid/vapour phase carriers previously suggested by the authors. Finally, comments on practical implementations of CLC in power plant will be presented.
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McGlashan, Niall R., Andrew L. Heyes, and Andrew J. Marquis. "Carbon Capture and Reduced Irreversibility Combustion Using Chemical Looping." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28116.

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Power generation traditionally depends on combustion to ‘release’ the energy contained in fuels. Combustion is, however, an irreversible process and typically accounts for a quarter to a third of the lost work generation in power producing systems. The source of this irreversibility is the large departure from chemical equilibrium that occurs during the combustion of hydrocarbons. Chemical looping combustion (CLC) is a technology initially proposed as a means to reduce the lost work generation in combustion equipment. However, renewed interest has been shown in the technology since it also facilitates carbon capture. CLC works by replacing conventional “oxy-fuel” combustion with a two-step process. In the first, a suitable oxygen carrier (typically a metal) is oxidised using air. This results in an oxygen depleted air stream and a stream of metal oxide. The latter is then reduced in the second reaction step using a hydrocarbon fuel. The products of this second step are a stream of reduced metal, which is returned to the oxidation reaction, and a stream of CO2 and H2O that can be separated easily. The thermodynamic benefits of CLC stem from the fact that the oxygen carrier is recirculated and can thus be chosen with a reasonable degree of freedom. This enables the chemistry to be optimised to reduce the lost work generation in the two reactors – the reactions can then be operated much closer to chemical equilibrium. It is widely accepted in the literature that a key issue in CLC is identifying the most effective oxygen carrier. However, most previous work appears to consider systems in which a solid phase metallic oxygen carrier is recirculated between two fluidised bed reactors. In the current paper, we explore the possibility of using liquid or gas phase reactions in the two reaction steps since it is hypothesised that these might be compatible with a wider range of fuels including coal. The paper, however, starts by reviewing the existing literature on CLC and the basic thermodynamics of a conceptual CLC power plant. The thermodynamic analysis is extended to include a general method for calculating the lost work generation in a given chemical reactor. Finally, this method is applied to the oxidation reaction of a proposed CLC reaction scheme.
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Jin, Hongguang, and Masaru Ishida. "Investigation of a Novel Gas Turbine Cycle With Coal Gas Fueled Chemical-Looping Combustion." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1351.

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Abstract A new type of integrated gasification combined cycle (IGCC) with chemical-looping combustion and saturation for air is proposed and investigated. Chemical-looping combustion may be carried out in two successive reactions between two reactors, a reduction reactor (coal gas with metal oxides) and an oxidation reactor (the reduced metal with oxygen in air). The study on the new system has revealed that the thermal efficiency of this new-generation power plant will be increased by approximately 10–15 percentage points compared to the conventional IGCC with CO2 recovery. Furthermore, to develop the chemical-looping combustor, we have experimentally examined the kinetic behavior between solid looping materials and coal gas in a high-pressure fixed bed reactor. We have identified that the coal gas chemical-looping combustor has much better reactivity, compared to the natural gas one. This finding is completely different from the direct combustion in which combustion with natural gas is much easier than that with other fuels. Hence, this new type of coal gas combustion will make breakthrough in clean coal technology by simultaneously resolving energy and environment problems.
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Kataria, Priyam, Jobrun Nandong, and Wan Sieng Yeo. "Reactor design and control aspects for Chemical Looping Hydrogen Production: A review." In 2022 International Conference on Green Energy, Computing and Sustainable Technology (GECOST). IEEE, 2022. http://dx.doi.org/10.1109/gecost55694.2022.10010396.

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Zhang, Zheming, and Ramesh Agarwal. "Transient Simulations of Spouted Fluidized Bed for Coal-Direct Chemical Looping Combustion." In ASME 2014 Power Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/power2014-32290.

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Chemical-looping combustion holds significant promise as one of the next generation combustion technology for high-efficiency low-cost carbon capture from fossil fuel power plants. For thorough understanding of the chemical-looping combustion process and its successful implementation in CLC based industrial scale power plants, the development of high-fidelity modeling and simulation tools becomes essential for analysis and evaluation of efficient and cost effective designs. In this paper, multiphase flow simulations of coal-direct chemical-looping combustion process are performed using ANSYS Fluent CFD code. The details of solid-gas two-phase hydrodynamics in the CLC process are investigated by employing the Lagrangian particle-tracking approach called the discrete element method (DEM) for the movement and interaction of solid coal particles moving inside the gaseous medium created due to the combustion of coal particles with an oxidizer. The CFD/DEM simulations show excellent agreement with the experimental results obtained in a laboratory scale fuel reactor in cold flow conditions. More importantly, simulations provide important insights for making changes in fuel reactor configuration design that have resulted in significantly enhanced performance.
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Dara, Satyadileep, Ibrahim Khan, Eisa Al Jenaibi, Sandeep Dhebar, Ganank Srivastava, and Mostafa Shehata. "Techno-Economic Assessment of Blue Hydrogen Technologies." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/210819-ms.

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Abstract This study focuses on the techno-economic comparison of blue hydrogen technologies. Four technologies shown below are considered for the preliminary evaluation. Steam methane reforming with carbon capture Auto thermal reforming with carbon capture Syngas chemical looping technology Chemical looping reforming technology Industrial literature showed that syngas chemical looping technology and chemical looping reforming technology show high thermal efficiency and low capital and operating costs. However, challenges exist in the scale up, system integration and commercialization. Further R&D efforts may make this technology superior in near future. Steam methane reforming is the most established commercial technology for H2 production. However, when CO2 capture is included in scope, thermal efficiency decreases drastically and may become economically unviable if the H2 selling price is less than 2 $/kg. Auto thermal reforming shows attractive techno-economic indicators in terms of capital cost, thermal efficiency, and payback potential. Commercial references for this technology are limited comparatively but technology licensors do exist. Hence, this technology is identified as the recommended option for blue hydrogen production. Indeed, ATR process is even more attractive for ADNOC due to the availability of oxygen as a waste stream in one of its facilities. To this end, it is intended to investigate the prospects of adopting auto thermal process for blue hydrogen production in ADNOC by leveraging the available oxygen supply. A further detailed study is conducted to evaluate this proposal through simulation analysis, equipment design and costing analysis and thereby verify the technical feasibility, capital cost, operating cost, thermal efficiency, emissions profile and required selling price of H2.
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Zhang, Xiaosong, and Hongguang Jin. "A Novel Chemical-Looping Hydrogen Generation System With Multi-Input Fossil Fuels." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94655.

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This paper proposes a multi-input chemical looping hydrogen generation system (MCLH), which generates hydrogen, through the use of natural gas and coal. In this system, a new type of oven, burning coal instead of natural gas as heating resource for hydrogen production reaction, is adopted. Coal can be converted to hydrogen indirectly without gasification. Benefits from the chemical looping process, the CO2 can be captured without energy penalty. With the same inputs of fuel, the new system can product about 16% more hydrogen than that of individual systems. As a result, the energy consumption of the hydrogen production is about 165J/mol-H2. Based on the exergy analyses, it is disclosed that the integration of synthetic utilization of natural gas and coal plays a significant role in reducing the exergy destruction of the MCLH system. The promising results obtained may lead to a clean coal technology that will utilize natural gas and coal more efficiently and economically.
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Jukkola, Glen, Greg Liljedahl, Nsakala Ya Nsakala, Jean-Xavier Morin, and Herb Andrus. "An ALSTOM Vision of Future CFB Technology Based Power Plant Concepts." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78104.

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ALSTOM is actively working to develop circulating fluidized bed (CFB) based technologies to continue to reduce costs and mitigate CO2. Advanced ALSTOM concepts include “the oxygen-fired CFB,” which uses pure oxygen plus recirculated flue gas (mainly CO2) as a combustion medium, resulting in a flue gas stream with a high CO2 concentration. Consequently, CO2 can be separated from the flue gas stream relatively easily. As such, this technology is geared toward CO2 mitigation. Another advancement, “the circulating moving bed (CMBTM)” system, uses a novel heat exchanger design that heats the energy cycle working fluid to the high temperature levels required for advanced power generation systems. The CMBTM combustion system is also an enabling technology for hydrogen production and CO2 capture from combustion systems utilizing innovative chemical looping gasification and syngas decarbonization. Chemical looping is another development path towards CO2 mitigation. In ALSTOM’s processes, oxygen (from air) is transported by a solid oxygen carrier for combustion or gasification of the fuel. CO2 is captured in a separate chemical loop in the gasification process. The process can be used to produce nearly pure CO2 and steam for a Rankine cycle; or synthesis gas or hydrogen with CO2 capture for IGCC’s, fuel cells, or industrial use. This paper will discuss ALSTOM’s latest work and the technical and economic implications of these advanced CFB-based systems. These advanced power generation units can be built from proven fluid bed design features and systems and the same processes supporting current-state technology enable rational development of future-state power generation and CO2 capture.
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Ding, Haoran, Yongqing Xu, Linyi Xiang, Qiyao Wang, Cheng Shen, Cong Luo, and Liqi Zhang. "Synthesis of CeO2 Supported BaCoO3 Perovskites for Chemical-Looping Methane Reforming to Syngas and Hydrogen." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3246.

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In order to reduce the hotspots in partial oxidation of methane, CeO2 supported BaCoO3 perogvskite-type oxides were synthesized using a sol-gel method and applied in chemical-looping steam methane reforming (CL-SMR). The synthesized BaCoO3-CeO2 was characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). XRD and XPS results suggested that the obtained BaCoO3 was pure crystalline perovskite, its crystalline structure and lattice oxygen could regenerate after calcining. The reactivity of perovskite-type oxides in CL-SMR was evaluated using a fixed-bed reactor. Gas production rates and H2/CO ratios showed that the optimal reaction temperature was about 860 °C and the properly reaction time in fuel reactor was about 180s when Weight Hourly Space Velocity (WHSV) was 23.57 h−1. The syngas production in fuel reactor were 265.11 ml/g, hydrogen production in reforming reactor were 82.53 ml/g. (CSPE)
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Reports on the topic "Chemical looping technology"

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Andrus, Herbert E. Alstom’s Chemical Looping Combustion Technology for CO2 Capture for New and Retrofit Coal-Fired Power Plants. Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1440120.

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