Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Development And Characterisation Of A Copper Based Oxygen Carrier For Chemical Looping With Oxygen Uncoupling Clou
Download Development And Characterisation Of A Copper Based Oxygen Carrier For Chemical Looping With Oxygen Uncoupling Clou full books in PDF, epub, and Kindle. Read online Development And Characterisation Of A Copper Based Oxygen Carrier For Chemical Looping With Oxygen Uncoupling Clou ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Development and Characterisation of a Copper-based Oxygen Carrier for Chemical-looping with Oxygen Uncoupling (CLOU). by : Wenting Hu
Download or read book Development and Characterisation of a Copper-based Oxygen Carrier for Chemical-looping with Oxygen Uncoupling (CLOU). written by Wenting Hu and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Copper and Manganese-based Oxygen Carriers in Chemical-looping Combustion (CLC) and Chemical-looping with Oxygen Uncoupling (CLOU) by : Mehdi Arjmand
Download or read book Copper and Manganese-based Oxygen Carriers in Chemical-looping Combustion (CLC) and Chemical-looping with Oxygen Uncoupling (CLOU) written by Mehdi Arjmand and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Characterisation of Oxygen-carrier Materials for Chemical-looping Combustion by : Paul Cho
Download or read book Development and Characterisation of Oxygen-carrier Materials for Chemical-looping Combustion written by Paul Cho and published by . This book was released on 2005 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Chemistry of Copper-based Oxygen Carriers in Chemical Looping Combustion Systems by : Eli A. Goldstein
Download or read book Modeling Chemistry of Copper-based Oxygen Carriers in Chemical Looping Combustion Systems written by Eli A. Goldstein and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of a model that can be used to predict oxidation rates of copper to cuprous and cupric oxide (Cu2O and CuO, respectively) in the air reactor of a Chemical Looping Combustion (CLC) system is the primary focus of this thesis. The proposed oxidation model, which is based in Wagner Theory and defect chemistry, describes the fundamental processes occurring during copper oxidation. Consequently, it provides better predictive capabilities over a wide range of temperatures and pressures, as well as characteristic particle geometries (spheres, cylinders and plates) than the phenomenological models that are currently being used to predict oxidation rates of copper-based oxygen carriers used in CLC systems. In addition to developing this oxidation model, cuprous and cupric oxide reduction experiments with gaseous fuels like carbon monoxide, hydrogen and methane, and solid fuels like char, wyodak coal, and corn stover, were performed to characterize reaction rates in the fuel reactor of CLC systems. Oxidation rates obtained from the oxidation model, and measured rates from the reduction experiments were used to estimate the size and oxygen carrier loading for a 10 MWth CLC system.
Book Synopsis Handbook of Chemical Looping Technology by : Ronald W. Breault
Download or read book Handbook of Chemical Looping Technology written by Ronald W. Breault and published by John Wiley & Sons. This book was released on 2019-01-22 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive and up-to-date handbook on this highly topical field, covering everything from new process concepts to commercial applications. Describing novel developments as well as established methods, the authors start with the evaluation of different oxygen carriers and subsequently illuminate various technological concepts for the energy conversion process. They then go on to discuss the potential for commercial applications in gaseous, coal, and fuel combustion processes in industry. The result is an invaluable source for every scientist in the field, from inorganic chemists in academia to chemical engineers in industry.
Book Synopsis Chemical Looping Systems for Fossil Energy Conversions by : Liang-Shih Fan
Download or read book Chemical Looping Systems for Fossil Energy Conversions written by Liang-Shih Fan and published by John Wiley & Sons. This book was released on 2011-02-14 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the current carbonaceous fuel conversion technologies based on chemical looping concepts in the context of traditional or conventional technologies. The key features of the chemical looping processes, their ability to generate a sequestration-ready CO2 stream, are thoroughly discussed. Chapter 2 is devoted entirely to the performance of particles in chemical looping technology and covers the subjects of solid particle design, synthesis, properties, and reactive characteristics. The looping processes can be applied for combustion and/or gasification of carbon-based material such as coal, natural gas, petroleum coke, and biomass directly or indirectly for steam, syngas, hydrogen, chemicals, electricity, and liquid fuels production. Details of the energy conversion efficiency and the economics of these looping processes for combustion and gasification applications in contrast to those of the conventional processes are given in Chapters 3, 4, and 5.Finally, Chapter 6 presents additional chemical looping applications that are potentially beneficial, including those for H2 storage and onboard H2 production, CO2 capture in combustion flue gas, power generation using fuel cell, steam-methane reforming, tar sand digestion, and chemicals and liquid fuel production. A CD is appended to this book that contains the chemical looping simulation files and the simulation results based on the ASPEN Plus software for such reactors as gasifier, reducer, oxidizer and combustor, and for such processes as conventional gasification processes, Syngas Chemical Looping Process, Calcium Looping Process, and Carbonation-Calcination Reaction (CCR) Process. Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.
Book Synopsis Copper in chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) by : Mehdi Arjmand
Download or read book Copper in chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) written by Mehdi Arjmand and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamental Aspects of Chemical-looping with Oxygen Uncoupling Using Copper Oxide-based Oxygen Carriers by : Christopher K. Clayton
Download or read book Fundamental Aspects of Chemical-looping with Oxygen Uncoupling Using Copper Oxide-based Oxygen Carriers written by Christopher K. Clayton and published by . This book was released on 2016 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Iron and Copper Oxide Based Oxygen Carriers for Chemical Looping Applications - Structural Insight and Performance Assessment by : Nur Sena Yüzbasi
Download or read book Development of Iron and Copper Oxide Based Oxygen Carriers for Chemical Looping Applications - Structural Insight and Performance Assessment written by Nur Sena Yüzbasi and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Novel Mixed Metallic Oxygen Carrier for Chemical Looping Combustion by : Mohammad Rezwanul Quddus
Download or read book A Novel Mixed Metallic Oxygen Carrier for Chemical Looping Combustion written by Mohammad Rezwanul Quddus and published by . This book was released on 2013 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: In last decades, significant concerns have been raised regarding the global warming effects. To date, about one - third of the total anthropogenic CO2 emission results from power generation using fossil based fuel and CO2 is regarded as the main contributor to global warming. Therefore, technologies for efficient capture of CO2 are becoming of great value. In this respect, Chemical-Looping Combustion (CLC) has received significant attention as a promising technology facilitating concurrent CO2 capture and power generation. This non - conventional technique employs a solid carrier, known as oxygen carrier, to supply oxygen and it facilitates the combustion process in absence of N2 diluted air. Therefore, the combustion products (CO2 and water) are easily separable without any extra downstream processing cost involved in other available alternatives. However, the non- vailability of suitable oxygen carriers still hinders the commercialization of CLC. This study, thus, deals with the development of a new mixed metallic oxygen carrier, Ni-Co/La-?-Al2O3. Several characterization techniques are used to evaluate the reactivity and stability of the prepared oxygen carriers under the industrial-scale conditions of a CLC processes. Apart from the beneficia l effects of La and Co, the reducibility and the structural properties of the prepared oxygen carriers are found to be influenced significantly by the different preparation methods used. N2 adsorption isotherms show that?-Al2O3 retains its structural int egrity under some specific preparation conditions. Reducibility as determined by consecutive temperature programmed techniques resembles the chemical properties of? - and?-Al2O3 for the other preparation techniques. However, no bulk phase change is detected for all the oxygen carriers studied using XRD. The SEM/EDX and H2 chemisorption analyses show the absence of metal agglomeration and suggest that the prepared oxygen carriers are highly stable under CLC operating conditions. The prepared oxygen carriers are also tested for reactivity, stability and fluidizability in the CREC Riser Simulator using multiple reduction/oxidation cycles with CLC fuel. Results obtained show expected reducibility, oxygen carrying capacity and stability. The solid-state kinetics of the reduction processes are developed using nucleation and nuclei growth model (NNGM) and unreacted shrinking core model (USCM). The NNGM model shows better adequacy over USCM in describing the mechanism of reduction process.
Book Synopsis Development of Iron-based Oxygen Carriers in Recyclability, Physical Strength and Toxicity-tolerance for Coal-direct Chemical Looping Combustion Systems by : Cheng Lung Chung
Download or read book Development of Iron-based Oxygen Carriers in Recyclability, Physical Strength and Toxicity-tolerance for Coal-direct Chemical Looping Combustion Systems written by Cheng Lung Chung and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents investigations of chemical looping technology as a transformative process for combustion of fossil fuels for power generation with CO2 capture. Specifically, the dissertation seeks to synthesize and characterize a low-cost iron-based oxygen carrier that can be employed in a commercial chemical looping combustion system with realistic material lifetime and adequate resistance to toxicity from pollutants from fossil fuels such as coal. Two secondary metal oxides (Al2O3 and TiO2) as support materials for Fe2O3 and their respective reaction-induced morphological changes are presented. A novel iron-based oxygen carrier was consequently identified to be sustainable over 3000 redox cycles in high temperatures (1000 °C) at the lab scale without chemical and physical degradation. Oxygen carrier of the same design also exhibited high resistance toward attrition from circulation and fluidization in two pilot-scale demonstration units under representative conditions. Tolerance of the active ingredients of the iron-based oxygen carriers against common toxic elements in the fossil fuel feedstock, such as alkaline and sulfur compounds from conversion of coal, through multiple fixed bed experiments under conditions representative of the counter-current moving bed reducer and thermogravimetric experiments up to 9000 ppm of H2S. The likelihood of agglomeration and interaction of alkaline metals (Na, K) with the iron-based oxygen carriers were found to be extremely low under normal operating conditions. Instead, proper distribution of coal was more crucial to avoid agglomeration caused by melting of SiO2. Sulfur deposition on iron-based oxygen carriers, although observed, was reversible through regeneration with air and did not result in degradation in the recyclability of the oxygen carriers. A potential pathway for sulfur emission via the combustor spent air was also identified. The sulfur emission and distribution of the Coal-Direct Chemical Looping (CDCL) 25 kWth sub-pilot unit which utilized the iron-based oxygen carriers was determined with a custom heat-traced gas sampling system. More than 69% of the total amount of atomic sulfur from high sulfur coal was converted to SO2 and H2S in the reducer flue gas stream while less than 5% was released as SO2 in the combustor spent air. The missing atomic sulfur in the balance was attributed to sulfur retained in coal ash as inorganic sulfur compounds. A flue gas clean-up system targeting both H2S and SO2 is therefore recommended to meet the quality of CO2-rich stream for transportation and sequestration in a commercial CDCL system. The projected sulfur emission in the combustor spent air was under the US EPA sulfur emission regulation safe to be released to the atmosphere without a costly acid removal system. The findings demonstrate the robustness of the CDCL system, together with the iron-based oxygen carriers, to handle high sulfur coal without severe performance and economic penalties.
Book Synopsis Catalytic Modification of Oxygen Carriers for Chemical Looping Applications by : Mengqing Guo
Download or read book Catalytic Modification of Oxygen Carriers for Chemical Looping Applications written by Mengqing Guo and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The kinetics of iron-based oxygen carriers were studied as well to show the increment performance of the chemical looping process with doped iron-based oxygen carriers. With the development of chemical looping scaling up, there are more opportunities and challenges in this process and oxygen carriers. Outcomes from this research on the development of oxygen carriers throw lights on the commercialization of the chemical looping technology in the near future.
Book Synopsis Copper-Oxygen Chemistry by : Kenneth D. Karlin
Download or read book Copper-Oxygen Chemistry written by Kenneth D. Karlin and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the vastly expanding subject of oxidative processes mediated by copper ions within biological systems Copper-mediated biological oxidations offer a broad range of fundamentally important and potentially practical chemical processes that cross many chemical and pharmaceutical disciplines. This newest volume in the Wiley Series on Reactive Intermediates in Chemistry and Biology is divided into three logical areas within the topic of copper/oxygen chemistry— biological systems, theory, and bioinorganic models and applications—to explore the biosphere for its highly evolved and thus efficient oxidative transformations in the discovery of new types of interactions between molecular oxygen and copper ion. Featuring a diverse collection of subject matter unified in one complete and comprehensive resource, Copper-Oxygen Chemistry probes the fundamental aspects of copper coordination chemistry, synthetic organic chemistry, and biological chemistry to reveal both the biological and chemical aspects driving the current exciting research efforts behind copper-oxygen chemistry. In addition, Copper-Oxygen Chemistry: Addresses the significantly increasing literature on oxygen-atom insertion and carbon-carbon bond-forming reactions as well as enantioselective oxidation chemistries Progresses from biological systems to spectroscopy and theory, and onward to bioinorganic models and applications Covers a wide array of reaction types such as insertion and dehydrogenation reactions that utilize the cheap, abundant, and energy-containing O2 molecule With thorough coverage by prominent authors and researchers shaping innovations in this growing field, this valuable reference is essential reading for bioinorganic chemists, as well as organic, synthetic, and pharmaceutical chemists in academia and industry.
Book Synopsis Advances in Synthesis Gas: Methods, Technologies and Applications by : Mohammad Reza Rahimpour
Download or read book Advances in Synthesis Gas: Methods, Technologies and Applications written by Mohammad Reza Rahimpour and published by Elsevier. This book was released on 2022-10-18 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Synthesis Gas: Methods, Technologies and Applications: Syngas Production and Preparation is a collection of various chapters concerning many aspects of syngas production technologies, including common methods like gasification, steam/dry/autothermal reforming, membrane technology, etc., along with novel methods like plasma technology, micro-reactors, electrolysis processes as well as photocatalytic systems. In addition, different sources for producing syngas, including oil, crude oil, heavy oil, microalgae, black liquor, tar and bitumen, as well as municipal, agricultural, food, plastic, wood and cardboard wastes are described in detail. Introduces syngas characteristics and its properties Describes various methods and technologies for producing syngas Discusses syngas production from different roots and feedstocks
Book Synopsis Chemical-looping Combustion by : Egwono Kelvin Okpoko
Download or read book Chemical-looping Combustion written by Egwono Kelvin Okpoko and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fe2O3-based Oxygen Carriers for Gaseous and Solid-fueled Chemical Looping Processes by : Ankita Majumder
Download or read book Fe2O3-based Oxygen Carriers for Gaseous and Solid-fueled Chemical Looping Processes written by Ankita Majumder and published by . This book was released on 2016 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical looping is an efficient, economic and sustainable means for electricity and/or chemicals production with inherent CO2 sequestration ability. Oxygen carriers play a crucial role in the successful operation of a chemical looping system as their physical and chemical properties dictate the fuel conversion efficiency of the system. They are expected to undergo multiple redox cycles while maintaining their reactivity and mechanical strength in order to improve the overall process economics for commercial viability. This research investigates the behavior of oxygen carriers under different reactive conditions and evaluates their feasibility for biomass chemical looping systems. The reduction kinetics of OSU’s iron titanium complex metal oxide (ITCMO) oxygen carrier particles are investigated at elevated pressures with H2 and CH4 for application in OSU’s Shale gas-to-Syngas process. Under CH4, there is almost a 5-fold increase in the reduction rate with an increase in pressure from 1 to 10 atm. Solid characterization revealed increased porosity and surface area at elevated pressures. Faster reaction kinetics at higher pressures can translate into increased processing capacity, reduced reactor sizing, and decreased capital costs. The steam to H4 conversion efficiency of Fe2O3 based oxygen carriers using Al2O3, MgAl2O4 and TiO2 as support materials is investigated in a fixed bed for chemical looping H2 generation. All supported-Fe2O3 based oxygen carriers exhibited >70% steam conversion, close to thermodynamic predictions. Due to its ability to not form complexes with the active material, MgAl2O4 -supported Fe2O3 was selected for further investigation. Thermogravimetric studies with steam oxidation exhibited excellent recyclability and no significant drop in reactivity. MgAl2O4 -supported Fe2O3 also exhibited enhanced steam oxidation kinetics at elevated pressures. Tar derived from biomass pyrolysis is a major concern for biomass thermochemical conversion processes. For biomass fueled chemical looping processes, it is important to evaluate effects of tars on the oxygen carriers. Fixed bed experiments demonstrated that OSU’s ITCMO oxygen carriers have reasonable reactivity for cracking most biomass-derived tar components. To further enhance the tar cracking ability of Fe2O3 -based oxygen carriers, they are combined with traditional tar cracking catalysts. Based on thermogravimetric reactivity and fixed bed tar cracking experiments, NiO is selected as an additive for Fe2O3 -based oxygen carriers for biomass chemical looping systems. The outcomes from this research will help in the development of economic and efficient oxygen carriers for the commercialization of the various chemical looping applications.
Book Synopsis A Systematic Investigation of the Performance of Copper-, Cobalt-, Iron-, Manganese- and Nickel-based Oxygen Carriers for Chemical Looping Combustion Technology Through Simulation Models by :
Download or read book A Systematic Investigation of the Performance of Copper-, Cobalt-, Iron-, Manganese- and Nickel-based Oxygen Carriers for Chemical Looping Combustion Technology Through Simulation Models written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
