Global ETD Search
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 25 for “"syngas production"”.
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Syngas production using a catalytic engine
… as a chemical reformer to convert natural gas to syngas by means of fuel-rich, incomplete combustion. This thesis project parallels a project that uses homogeneous reforming in-cylinder without a catalyst, with air or oxygen-enriched air (partial oxidation). This experiment explores the use and …
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Catalytic Reforming of Biogas for Syngas Production
… convert both the CH₄ and CO₂ into H₂ and CO, or syngas, a valuable product that can be used to produce liquid fuels, provide H₂ for fuel cells, or improve the combustion of biogas. A Rh/Al₂O₃ catalyst is successful in dry reforming biogas to syngas without deactivation from carbon formation at …
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New catalysts for syngas production from carbon dioxide and methane
The performance of cobalt tungsten carbide material was investigated for CH4/CO2 reforming. The catalyst was found to convert to a very stable, very active, form when heated in CH4/CO 2 at 850°C and 5 atm. Even after 90 hours on stream, CH4 and CO2 rates of 1.3 and 1.25 mmol/min/g respectively …
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High temperature ceramic membrane for CO₂ reuse and syngas production
… conducting membrane (MIEC) in CO2 reuse and syngas production by taking the advantage of low quality energy resource. The membrane under investigation is a La0,9Cao01FeO3 -6 (LCF) perovskite membrane. Membranes with perovskite structure have shown high oxygen permeability and 100% oxygen …
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Syngas production from heavy liquid fuel reforming in inert porous media
… power generators, a hydrocarbon reformer to syngas seems to be the way for the market uptake. In this thesis, a potential technology is developed and investigated, in order to convert commercial liquid fuel (diesel, kerosene and biodiesel) to syngas. The fundamental concept is to oxidise the …
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Design, implementation and control of microwave plasma gasification system for syngas production
… provides a solution for sustainable energy production. It applies the newest technologies of microwave plasma on a traditional method known as gasification. The simulation of this system has been achieved through a high frequency structure simulator to decide the best design of the …
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The engine reformer : syngas production in engines using spark-ignition and metallic foam catalysts
… (CO), and could be used as synthesis gas ("syngas") for the synthesis of liquid fuels such as methanol. Conventional syngas production techniques are only economical on a large scale and cannot be transported to hard-to-reach gas sources, where gas-to-liquids (GTL) would have the biggest …
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Membrane-supported hydrogen/syngas production using reactive H₂O/CO₂ splitting for energy storage
… temperatures. This thesis explores fuel production using oxygen permeable membranes. La₀.₉Ca₀.₁FeO₃-[subscript [delta]] (LCF-91) perovskite is used to develop a framework for reactor design based on a careful assessment of fuel production rates on the membrane design and operating …
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Water splitting for hydrogen and syngas production over a novel bi-layer perovskite membrane
… over the two materials, respectively. Co-production of hydrogen and syngas from water splitting is investigated using the single layer LSCC membrane and bi-layer membrane. The analysis shows that the bi-layer membrane has 0.149 [mu]mol/cm2-s oxygen fluxes in water splitting environment. …
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Developing and evaluating a partition-cavity solar thermochemical reactor for syngas production via computational fluid dynamics
<p>"Solar thermochemical processes are attractive since they have the advantages of storing solar energy as chemical fuels. In this dissertation, a partition-cavity solar thermochemical reactor was developed, and the heat and mass transfer of the solar thermochemical processes were numerically …
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Kinetics and Reaction Engineering Aspects of Syngas Production by the Heterogeneously Catalysed Reverse Water Gas Shift Reaction
… of a process for CO2 utilisation and/or syngas production, the catalytic hydrogenation of CO2 using commercial Ni/Al12O19 and Al2O3 catalysts was studied. The experiments were performed in a down-flow fixed bed quartz reactor at atmospheric pressure. The reverse water gas shift (RWGS) …
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Experimental study and modeling analysis of ion transport membranes for methane partial oxidation and oxyfuel combustion
… for power generation and partial oxidation for syngas production. Both require significant quantities of oxygen, whose production can impose considerable energy and economic penalties. Alternative technologies, such as intermediate-temperature ceramic membranes, operating under reactive …
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Mu-synthesis controller design for temperature control of a solar steam gasifier with uncertainty modeling and robust analysis
… specific temperature to keep the total amount of syngas produced at a precise value. Since solar irradiation fluctuations would cause temperature fluctuations, temperature regulation via controlling the amount of lignite and oxygen fed into the reactor core was implemented. Two different …
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Design, fabrication, operation and Aspen simulation of oil shale pyrolysis and biomass gasification process using a moving bed downdraft reactor
… be studied before any significant commercial production is attempted. In Paper II, the proposed Aspen models for oil shale pyrolysis is to identify the key process parameters for the reactor and optimize the rate of production of syncrude from oil shale. The work in Paper III focuses on 1. …
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Avaliação da torrefação e densificação de resíduos agrícolas no Brasil
… producers in the World. This large-scale production leads to a vast amount of residues left in the field, which ultimately carry a considerable potential to produce energy vectors. Nonetheless, the energy usage of this resource face technical and logistical challenges. The torrefaction of …
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Fast microwave-assisted thermochemical conversion of biomass for biofuel production
… in biomass pyrolysis and gasification for the production of bio-oil and syngas, respectively. In addition, in order to utilize the syngas produced, a single-step process was investigated for converting syngas to dimethyl ether (DME) on various bifunctional catalysts. In Chapter 2, the microwave …
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Coal gasification for fuel synthesis: Multiphysics modeling and new concepts
… to identify the most influential parameters for syngas production, we first developed a multi-physics and multi-scale model to simulate the gasification processes in a well-stirred reactor. This model is the first of its kind and considers detailed gas-phase chemistry, particle-phase reactions, …
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RESTAURANT FOOD WASTE MANAGEMENT USING MICROWAVE PLASMA GASIFICATION TECHNOLOGY
… The resulting plasma jet was used to produce syngas from the waste samples inside a thermally insulated, steel-walled reactor. Temperature profiles were recorded to find the best gas flow rates. 10g samples of the three waste categories were tested in triplicate and the results are presented. …
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Comprehensive Modeling and Numerical Investigation of Entrained-Flow Coal Gasifiers
… reduced gasification performance, downgraded syngas heating value, and increased unburned volatiles. The investigation of heat transfer on fuel injectors shows that blunt tip fuel injector is less likely to fail compared to conical tip fuel injector because the maximum high temperature on the …
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Comparative systems analysis of thermochemical and biochemical recycling of organic waste towards industrial feedstocks
… the resource base for chemical and energy production from fossil feedstocks to renewable raw materials is seen by many as one of the key strategies towards sustainable development. The utilization of biomass for the production of fuels and materials has been proposed as an alternative to …
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