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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Chemical Looping"”.
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Chemical Looping Electricity Storage
… a simple cycle which makes use of a thermo-chemical store, with a view to achieving high storage capacity by using the chemical looping concept. To do so, a simplified model of a packed bed reactor is developed enabling faster analysis of different layouts and materials. The objective is to …
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Chemical Looping for Selective Oxidations
This Dissertation describes the development of chemical looping for selective oxidations. Chemical looping is a reactor technology that achieves simultaneous reaction and separation. For a large subset of reactions (viz. abstraction or insertion of oxygen), this technology is based upon the use of …
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CFD Simulation of Chemical Looping Combustion System
… by 2040, rising to approximately 59% by 2050. Chemical looping combustion (CLC) is one of the most promising cost-effective technologies that can be retrofitted onto existing power plants for CCS. The main drawback attributed to CLC is a very low confidence level as a consequence of the lack of …
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Chemical Looping Combustion: A Multi-Scale Analysis
Chemical looping combustion (CLC) is a technique for separating pure carbon dioxide from the combustion of fuels. The oxygen to burn the fuel comes from the lattice oxygen contained in solid particles of an inorganic oxide (the ‘oxygen carrier’), instead of from oxygen in the air. Thus only CO2 and …
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Selective Oxidation Reactions: A Chemical Looping Approach
The production of chemicals is a key contributor to industrial energy demand and greenhouse gas emissions. Chemical looping (CL) offers a novel route to improve energy efficiency and environmental performance, hence investigated in this Dissertation for two selective oxidation reactions: (i) the …
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Application of Chemical Looping for Solar Thermal Energy Storage
… to be developed for this to be achieved. Thermochemical energy storage with multivalent metal oxides provides high operating temperatures (600˚C to 1100˚C) and high storage capacity, depending on the storage media, through reduction and oxidation (RedOx) reactions. The RedOx reactions of …
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Interactions between catalysts and oxygen carriers in chemical looping processes
… supported on a reactive metal oxide, applied for chemical looping processes, using Ag/SrFeO3−δ as a model system. In chemical looping processes, lattice oxygen is provided from a metal oxide (termed the oxygen carrier) to generate purified oxygen, or, to react with a reducing gas (e.g. a …
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Experimental characterization and chemical kinetics study of chemical looping combustion
Chemical looping combustion (CLC) is one of the most promising technologies to achieve carbon capture in fossil fuel power generation plants. A novel rotary-bed reactor concept was proposed by Zhao et. al. [1] in 2013. It is a compact gas fueled CLC reactor that could achieve high fuel conversion …
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Rotary bed reactor for chemical-looping combustion with carbon capture
Chemical-looping combustion (CLC) is a novel and promising technology for power generation with inherent CO2 capture. Currently almost all the research has been focused on developing CLC based inter-connected fluidized bed reactors. A new rotating reactor concept for gas fueled CLC is proposed. In …
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Collaborative Simulation of Reacting Flow and Controller in Chemical Looping Systems
As chemical reactors and industrial processes become more complex and diverse, process controllers are increasingly required to optimise system performance and ensure stable operation. This is particularly true in energy-intensive industries, where multiphase reactive systems are highly dynamic and …
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Chemical Looping Applied to Synthetic Fuels Production via Solar Thermochemical Routes
L'abstract è presente nell'allegato / the abstract is in the attachment
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Wavelet adaptive and predictive control with applications to chemical looping system
Chemical looping process is a novel technology to separate oxygen from nitrogen using solid oxygen carrier to facilitate carbon dioxide capture in the design of next generation clean coal power plants. Application of the available control techniques to this process to guarantee its tight and robust …
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The Investigation of Aspects of Chemical Looping Combustion in Fluidised Beds
Chemical looping combustion (CLC) is a promising fossil fuel combustion technology, which is able to separate CO2 from the flue gases without a large consumption of energy. In this thesis, the study was extended to look at the use of chemical looping materials within traditional fluidised bed …
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OXYGEN STORAGE PROPERTIES OF TERNARY METAL OXIDE SYSTEMS FOR CHEMICAL LOOPING REACTIONS
… synchrotron X-ray diraction. Under simulated chemical looping conditions, we monitored their structures and reactivity towards H2 and O2 utilizing in-situ X-ray diraction, neutron diraction, and thermogravimetric analysis measurements. The nature of the trivalent A cation aects the oxidation …
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Fundamental Studies of Chemical Looping Combustion with Oxygen Uncoupling (CLOU) of Biomass Char
Chemical Looping Combustion (CLC) is a technique which utilises lattice oxygen contained in solid particles of an inorganic oxide (the ‘oxygen carrier’) to combust fuels, enabling the collection of products of combustion (CO₂ and H₂O) undiluted with nitrogen. It offers, therefore, an attractive …
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Computational Fluid Dynamics Modeling and Simulations of Fluidized Bed Reactors for Chemical Looping Combustion
<p>Chemical looping combustion (CLC) is a next generation combustion technology that shows great promise as a solution for the need of high-efficiency low-cost carbon capture from fossil fueled power plants. To realize this technology on an industrial scale, the development of high-fidelity …
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CPFD Modeling of a Novel Internally Circulating Bubbling Fluidized Bed for Chemical Looping Combustion
Pressurized chemical looping combustion (PCLC) is a promising next generation carbon capture technology which operates on the fundamentals of oxyfuel combustion to concentrate carbon dioxide in the flue gas stream. Oxygen is supplied through cyclic oxidation and reduction of a solid metal oxide …
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Application of low PO2 iron-based oxides for decarbonising steel industry via chemical looping
… metal oxide for (i) integrated calcium and chemical looping combustion (CaL-CLC), and (ii) hydrogen and syngas production using methane. C<sub>2</sub>F) comprises of CaO and Fe<sub>2</sub>O<sub>3</sub> which are already utilised in the steel industry. This is important consideration for …
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Progress in an oxygen-carrier reaction kinetics experiment for rotary-bed chemical looping combustion
… platform measuring reaction kinetics in a chemical looping combustion (CLC) process is documented and justified. To enable an experiment designed to characterize the reaction kinetics of the reduction/oxidation cycle in a rotary channeled oxygen carrier, a platform was designed to deliver …
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