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Showing 1 to 20 of 51 for “"Coal Gasification"”.
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Optimization of Great Plains Coal Gasification Using Aspen/SP
<p>The Dakota Gasification Company in Beulah, North Dakota operates the only commercial coal-to-synthetic natural gas (SNG) plant in the United States, and continued research on the plant's operations is of prime importance. An ASPEN/SP model of a Lurgi coal gasifier that will predict the impact of …
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Steady-state simulation of the HYGAS coal gasification process.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Chemical Engineering.
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The suitability of coal gasification in India's energy sector
Integrated Gasification Combined Cycle (IGCC), an advanced coal-based power generation technology, may be an important technology to help India meet its future power needs. It has the potential to provide higher generating efficiency, can be adapted to efficiently burn India's high-ash coal, and …
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Computational Simulation of Coal Gasification in Fluidized Bed Reactors
The gasification of carbonaceous fuel materials offers significant potential for the production of both energy and chemical products. Advancement of gasification technologies may be expedited through the use of computational fluid dynamics, as virtual reactor design offers a low cost method for …
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Simulation of Coal Gasification Process Inside a Two-Stage Gasifier
Gasification is a very efficient method of producing clean synthetic gas (syngas) which can be used as fuel for electric generation or chemical building block for petrochemical industries. This study performs detailed simulations of coal gasification process inside a generic two-stage …
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Coal gasification for fuel synthesis: Multiphysics modeling and new concepts
<p>Fuel synthesis through gasification of carbonaceous materials (e.g. coal and biomass) has the potential to provide a solution to the increasing demand for energy and liquid transportation fuels. To theoretically understand the complex physical and chemical processes in a gasifier and to identify …
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Improving heat capture for power generation in coal gasification plants
… configurations. A case study using an integrated gasification combined cycle (IGCC) plant with carbon capture and sequestration (CCS) is analyzed to assess changes in steam cycle design on the plant efficiency and cost. In addition to improving the steam system within an IGCC plant to improve …
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Modeling of solid oxide fuel cell performance with coal gasification
… gas emissions has driven research into clean coal power production alternatives. Novel coal power plant designs that lower CO2 emissions are imperative in the coming decades to mitigate global temperature rise. High-efficiency stationary power systems that integrate coal gasification with …
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Fabry-Perot Sapphire Temperature Sensor for Use in Coal Gasification
… by continuously measuring the temperature in a coal gasifier for 7 months, but its true potential has not yet been realized. The goal of this work and the work of many others is to extend the working life and reliability of high-temperature optical sapphire temperature sensors in harsh …
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Simulation and Modeling of Underground Coal Gasification Using Porous Medium Approach
… declining fossil fuel resources continue to make coal deposits a primary source of energy. However, the process of converting coal into valuable syngas through surface gasification requires conventional mining, extraction, transportation, storage, surface processing, ash and environmental …
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A COMPUTATIONAL STUDY OF DEVOLATILIZATION AND KINETICS IN ENTRAINED FLOW COAL GASIFICATION
… design cycle of modern entrained flow gasifiers. Gasification modeling considers an interacting multi-phase media in a turbulent environment. Several gasification sub-models have been developed and validated over the last thirty five years related to turbulence, gaseous combustion, …
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Test rig design to simulate ashlock valve erosion in coal gasification systems
The erosion of ashlock hopper valves in coal gasification systems, and the maintainance downtime resulting from this erosion, is a cause of considerable concern to the coal conversion industry. After an assessment of the factors considered relevant to solid particle erosion as presented in …
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Site Characterization, Sustainability Evaluation and Life Cycle Emissions Assessment of Underground Coal Gasification
Underground Coal Gasification (UCG), although not a new concept, is now attracting considerable global attention as a viable process to provide a "clean" and economic fuel from coal. Climate change legislation and the declining position of coal reserves (i.e., deeper and thinner seams) in many …
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Economics of coal gasification-combined cycle and coal-fired plants for electric power generation
Includes bibliographical references (pages 92-98).
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Mesostructured metal oxide-based nanocomposites as sorbents for H2S removal from syngas coal gasification
… to a range of 40, 60 years. On the contrary, coal is a widely available fossil fuel, and it is expected to last for about 230 years. The imminent oil production limitations and the longer availability of coal, the wish to improve the security of the energy supply, and the possibility to reduce …
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Methodology for technology evaluation under uncertainty and its application in advanced coal gasification processes
Integrated gasification combined cycle (IGCC) technology has attracted interest as a cleaner alternative to conventional coal-fired power generation processes. While a number of pilot projects have been launched to experimentally test IGCC technologies, mathematical simulation remains a central …
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Study on underground coal gasification combined cycle coupled with on-site carbon capture and storage
… formation. A technology coupling the underground coal gasification with carbon capture and storage (UCG-CCS) is proposed in this study to recover these lignite resources in North Dakota. The UCG-CCS system provides a cost-effective and environment-friendly approach to convert the lignite to …
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Modeling of Activated Carbon and Coal Gasification Char Adsorbents in Single-Solute and Bisolute Systems
… as a mixture. Four activated carbons and a coal gasification char were the adsorbents studied. Several single-solute and bisolute column experiments were conducted to provide data for model verification; the model predicted not only adsorption, but also desorption that resulted from a step …
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The Effects of a Coal Gasification Industry on a Small Regional Economy: A Multiperiod Interindustry Analysis
Made available in DSpace on 2014-12-14T06:06:09Z (GMT). No. of bitstreams: 1 7913400.pdf: 6794905 bytes, checksum: 31f6edee5b007860565ea964cb3a9457 (MD5) Previous issue date: 1978
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High Temperature Corrosion of Single Crystal Sapphire and Zirconia in Coal Gasification and Commercial Glass Environments
… in extremely corrosive environments, such as in coal gasifiers, a new sensor technology has been developed. This optical, ultra high temperature measurement system utilizes single crystal sapphire as a sensing element. A series of experiments was performed to determine the corrosion resistance of …
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