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Showing 1 to 18 of 18 for “"slagging"”.
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Behavior of refractory linings for slagging gasifiers
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1984.
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The formation of fouling and slagging deposits in pulverized coal combustion
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1988.
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A Preliminary Investigation of Physical-Chemical Treatment of Slagging Gasifier Aqueous Effluent
<p>The feasibility of treating slagging gasifier wastewater by physical-chemical means was studied. Pretreatment and treatment flow schemes were developed by using batch and continuous tests. Results were based mainly on wastewater residual total organic carbon (TOC). A treatment facility was …
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Bromine Chloride Treatment of Aqueous Gasifier Effluent
<p>The feasibility of treating slagging gasifier wastewater with bromine chloride was studied. The aqueous effluent was collected from the spray washer of the Grand Forks Energy Technology Center's slagging fixed-bed gasifier during run RA-94.</p><p>It was found that slagging gasifier wastewater is …
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A study into the fundamental understanding of iron-transformations and the effect of iron as fluxing agent on Highveld fine coal sources during gasification
… for gasification are its mineral content and slagging behaviour. Research has indicated that slag formation can be inhibited or even prevented by the addition of a fluxing agent. It is thus of great importance to understand the mineral interaction during gasification, in order to select a …
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Upgrading biomass by hydrothermal and chemical conditioning
… polymers from naturally present lignin. Slagging and fouling are two major problems that result from biomass combustion or co-firing with coal, especially for the biomass with high inorganic content. HTC provides biochar with the slagging and fouling indices which will predict slagging …
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Measurements and Modeling of Coal Ash Deposition in an Entrained-Flow Reactor
… window of operating conditions. Fouling and slagging of heat transfer surfaces continues to be a challenge for maintaining boiler availability and expanding the use of available fuels and operating conditions. The work incorporates existing information in the literature on ash deposition into …
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Dynamic reduced order modeling of entrained flow gasifiers
… particle physical and kinetic properties, and slagging. The ROM was used to simulate the steady-state and dynamic performance of a full-scale EFG system. In steady-state mode, the ROM was used to establish base case and fluxant requirements. The base case performance agreed with design …
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The determination of the optimum CO₂ for operating number 6 boiler
… carbon in the refuse; third, it effects slagging and possible deterioration of the refractory walls in the combustion space, and last, it effects the temperature of the refuse as it is discharged from the grate. From a survey of the data obtained from the test runs a decrease in the …
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Between respectability and disgrace: schismogenesis and the regeneration of inequality, stigma and social exclusion in Limerick
… examines the cultural and social function of ‘slagging’ as a vernacular and highly particularised form of ironic, ritualised and, often, ‘cruel’ medium of communication (often exclusion). This is combined with an etymology of the vocabulary of Limerick slang and its mythological base. By …
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Microchemical phase characterization of petroleum coke gasification slags
… sulfur otherwise lost by volatilization. Slagging additives can change the chemical categorization of resulting slags through phase modifications and the formation of new phases; this in tum can strongly alter the physical behavior of the slags. Compositionally diverse spinel oxides are …
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A zonal model for radiation heat transfer in coal-fired boiler furnaces
… These include an illustration of the effect of slagging on the furnace walls, of a faulty burner and of changes in the radiative properties of the participating medium. The results of the case studies show that the trends of the heat flux and temperature distributions obtained with the new model …
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Studies in Pressurized Oxy-Combustion: Process Development and Control of Radiative Heat Transfer
… boiler, 3) significantly reduces ash fouling and slagging, and 4) is flexible in that it is able to operate under various thermal loads. The proposed burner design would also lead to reduced soot, as compared to a normal burner. These aspects of the burner/boiler design are investigated in the …
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Computational fluid dynamics simulations of oxy-coal combustion for carbon capture at atmospheric and elevated pressures
… has been developed, which can be applied in slagging coal combustion/gasification with any geometry. The method couples Volume of Fluid (VOF) model and Discrete Phase Model (DPM), and fully resolves the slag's behaviors such as the slag layer buildup, multiphase flow, as well as heat …
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Thermal and Kinetic Analyses of the Pyrolysis of a Northern Great Plains Lignite
… North Dakota Energy Research Center's fixed-bed slagging gasifier.</p><p>No d e f i n i t i v e heat o f p y r o ly is valu e was determined under any con d ition . However, with experim ental refinem ents, c h a r a c t e r is tic heats o f p y r o ly s is o f d i f f e r e n t coals may be d e …
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Modelización cinética y optimización de parámetros de combustión en calderas de biomasa.
… en puntos calientes y fríos de la instalación (slagging y fouling). Este apartado se complementa con el artículo García Fernández R, Pizarro García C, Gutiérrez Lavín A, Bueno de las Heras JL. 2012. Study of main combustion characteristics for biomass fuels used in boilers. Fuel Processing …
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Studies in Advanced Oxy-combustion Technologies
… to minimize particle deposition to avoid slagging, fouling, and corrosion, and simulations of ash deposition indicate negligible deposition on the furnace wall. Radiation behavior is also studied to demonstrate radiative trapping effects. It is demonstrated, through both analytical and …