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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 22 for “"Co-firing"”.
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Energy ans exergy analysis of biomass co-firing in pulverized coal power generation
Biomass co-firing with coal exhibits great potential for large scale utilization of biomass energy in the near future. In the present work, energy and exergy analyses are carried out for a co-firing based power generation system to investigate the impacts of biomass cofiring on system performance …
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Application of Joint Time-Frequency Methods and Artificial Neural Networks for Monitoring Co-Firing Burners
Conventional coal-red burners are designed to operate within specific limits that, in part, result from the need to efficiently burn the fuel, ensure stable combustion and result in the lowest emissions. However, recent requirements to reduce CO2 emissions from coal-red boiler plant as part of the …
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Optimisation of Co-Firing of High Moisture Biomass with Coal in a Bubbling Fluidised Bed Combustor
… out with a particular view of enhancing the of coal fired fluidised bed hot gas generator (HGG) at the Cantley factory of British Sugar. It covers combustion of coal and biomass and their blends also called co-firing in a fluidised bed combustor. Particularly it focuses on the effect of …
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The Effects of SO2 on the Formation of Cl2 During Co-Firing Muncipal Solid Waste With Coal
The Deacon Reaction was proposed as a mechanism for the formation of molecular chlorine during the combustion of municipal solid waste (MSW): 4HCl + O2 ↔ 2Cl2 + 2H2O As suggested by some researchers, co-firing high sulfur coal with MSW may reduce the emission of toxic chlorinated organics, …
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Plant power : the cost of using biomass for power generation and potential for decreased greenhouse gas emissions
… greenhouse gas (GHG) benefits from displacing coal with carbon neutral biomass. In this thesis, the fuel cycle GHG emissions of power generation from both dedicated biomass power plants and coal power plants with biomass co-firing are quantified using a model based on Argonne National …
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Solid Fuel Blend Pyrolysis-Combustion Behavior and Fluidized Bed Hydrodynamics
… to help sustain the future energy demand. The co-firing of coal and biomass mixtures is an alternative fuel route for the existing coal based reactors. The main challenges associated with co-firing involves proper understanding of the co-firing behavior of blended coal-biomass fuels, and proper …
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A Study of Combustion Profiles of Co-Fired Coal/Biomass/Limestone Samples in a Fluidized Bed Combustor
Concerns over declining landfill space and a renewed interest in waste-toenergy technologies have increased the possibilities of co-firing different types of fuels in atmospheric fluidized bed combustion systems. The laboratory sized atmospheric fluidized bed combustor (AFBC) at Western Kentucky …
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Handling characteristics of coal/biomass mixes: measurements and establishing benchmarks.
… generation industry in the area of handling of coal/biomass mixes for co-firing. This project looked into two types of coals (Russian and Dawmill) and two types of biomasses (cereal co products (CCP) and milled palm nuts (MPN)) that are being extensively co-fired (as a mix) in the UK coal power …
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Economic Modeling of Bioenergy Crop Production and Carbon Emission Reduction in Illinois
… is likely to create an incentive for biomass co-firing. Such a policy would reduce the significant amount of carbon emissions and help the State obtain a considerable share of renewable energy. The carbon incentives would significantly increase the farm profitability and could help power …
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Torrefied wood pellets as an alternative fuel to coal : climate benefits and social desirability of production and use
… production and use as an alternative fuel to coal. The raw material of torrefied pellets is forest chips and production and use are assumed to take place in Finland. Climate impacts are assessed with focus on the full fuel chain, or the torrefied pellet life cycle. A brief review of other …
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The productive reuse of coal, biomass and co-fired fly ash
… to further increase the worldwide practices of firing biomass and co-firing biomass with coal, which are both considered more sustainable energy sources than coal-only combustion. Reuse options for the by-products of these processes -biomass ash and co-fired fly ash -remain limited. Therefore, …
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Mechanical Property Evaluation of Torrefied Biomass Materials with Correlation to Grinding Efficiency
… largest renewable energy source in the world, could therefore in principle become a key energy source in the future. Co-combustion of these materials and coal can lead to a significant reduction in carbon dioxide net emissions in new and existing power plants while potentially reducing capture …
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Poisoning and Sulfation on Vanadia SCR Catalyst
<p>Deactivation of titania-supported vanadia commercial SCR catalysts exposed to flue gases from both coal and coal-biomass co-firing boilers were investigated. BET surface area and average pore diameter measurements on both fresh and exposed commercial catalyst samples indicated pore plugging …
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Life Cycle Environmental and Cost Evaluation of Bioenergy Systems
… as a means to attain various environmental, economic and social goals. However, bioenergy production and utilization may also result in undesirable environmental and social consequences. This thesis investigates, from a life cycle perspective, environmental and cost implications of near-term …
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Assessing Greenhouse Gas Emissions Mitigation Potential through the use of Forest Bioenergy
… fossil fuel use, reduce non-renewable energy consumption, and provide investment and employment in the forestry sector. These opportunities, however, must be considered within the broader contexts of forest systems. Of particular interest is how bioenergy opportunities impact carbon storage …
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Modelling spatial variation and environmental impacts of land use change in the exploitation of land-based renewable bioenergy crops
… the cultivation of Miscanthus or short rotation coppiced (SRC) SRC willow for co-firing with coal or generation of combined heat and power (CHP). Modelling using an adapted version of DayCent was performed for typical sites to assess variation in yield, nitrous oxide (N2O) emissions, …
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Semicelle SOFC: studio e produzione di elettroliti con processi a basso impatto ambientale
Le celle a combustibile ad ossido solido (SOFC) sono dei sistemi elettrochimici in grado di trasformare direttamente l’energia chimica di un combustibile (generalmente H2) e di un comburente (O2) in energia elettrica, senza l’intervento intermedio di un ciclo termico. Le SOFCs rappresentano un …
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High Frequency Magnetic Core Loss Study
The core used to build power inductors and transformers are soft magnetic materials. When there is alternating external field, the magnetic moments rotate and consume energy, which is the core loss. The core loss depends on the AC flux frequency, amplitude, waveform, DC bias and temperature. These …
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Upgrading biomass by hydrothermal and chemical conditioning
… as wet torrefaction, biomass is treated with hot compressed subcritical water (200-260oC) for 5 min-8 h. The solid product, HTC biochar, contains about 55-90% of the mass and 80-95% of the fuel value of the original feedstock. The HTC process takes any wet waste biomass and converts it to a …
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Self-sustained combustion of low grade solid fuels in a stagnation-point reverse-flow combustor
… use of the Stagnation-Point Reverse-Flow (SPRF) combustor geometry for burning low-grade solid fuels that are attractive for specific industrial applications because of their low cost and on-site availability. These fuels are in general, hard to burn, either because of high moisture and …
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