Results 111 to 120 of about 215 (139)
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Environment, Development and Sustainability, 2019
In the present study, the steam gasification of Indian coal and its demineralized coal were investigated in a specially designed fixed-bed reactor, to determine the intrinsic kinetics parameters with optimum operating temperature and partial pressures of steam in the perspective of underground coal gasification (UCG).
Ramesh Naidu Mandapati, Praveen Ghodke
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In the present study, the steam gasification of Indian coal and its demineralized coal were investigated in a specially designed fixed-bed reactor, to determine the intrinsic kinetics parameters with optimum operating temperature and partial pressures of steam in the perspective of underground coal gasification (UCG).
Ramesh Naidu Mandapati, Praveen Ghodke
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Eco-efficiency of underground coal gasification (UCG) for electricity production
Fuel, 2016Abstract Hard coal is one of the main fossil fuels used to produce electricity in the world. Its combustion in power plants is associated with emissions of gas and dust pollutants. The article presents results of eco-efficiency assessment, life cycle assessment (LCA) and life cycle costing (LCC) of underground coal gasification (UCG) with the ...
P. Krawczyk +3 more
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Underground coal gasification (UCG): An analysis of gas diffusion and sorption phenomena
Fuel, 2015Abstract This article describes the results of measurements of the gas transport phenomena in coal and strata samples. The samples were taken from the surroundings of an underground georeactor in the “Barbara” Experimental Mine before and after an in situ underground coal gasification experiment.
Krzysztof Stańczyk +1 more
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Advanced Materials Research, 2012
Underground coal gasification (UCG) as a clean energy technology and efficient way for the conversion of the coal resources into energy in-situ has attracted wide public attention in recent years. Laboratory-scale experiments on coal blocks can provide significant insight into UCG process.
Gota Deguchi +4 more
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Underground coal gasification (UCG) as a clean energy technology and efficient way for the conversion of the coal resources into energy in-situ has attracted wide public attention in recent years. Laboratory-scale experiments on coal blocks can provide significant insight into UCG process.
Gota Deguchi +4 more
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Evaluation of coal resources for underground gasification in Poland. Selection of possible UCG sites
Fuel, 2017Abstract Several opinions are presented that underground coal gasification (UCG) may be used at large scale in coal seams of low thickness, at a great depth and for unrecovered coal in abandoned mines. Geological features of coal deposits limits wide application of UCG.
Jarosław Chećko +3 more
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Energy & Fuels, 2016
During underground coal gasification (UCG) operations, evaluation of coal gasification cavity evolution and precise control of the underground reactor are important for efficient gasification. It is also essential to estimate the energy recovery of a UCG system and the whole gasification process to ensure an effective combustion and gasification rate ...
Fa-qiang Su +5 more
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During underground coal gasification (UCG) operations, evaluation of coal gasification cavity evolution and precise control of the underground reactor are important for efficient gasification. It is also essential to estimate the energy recovery of a UCG system and the whole gasification process to ensure an effective combustion and gasification rate ...
Fa-qiang Su +5 more
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Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2021
Underground Coal Gasification (UCG) is thought to be the most favourable clean coal technology option from geological-engineering-environmental viewpoint (less polluting and high efficiency) for extracting energy from coal without digging it out or burning it on the surface.
Arup Kumar Biswas +3 more
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Underground Coal Gasification (UCG) is thought to be the most favourable clean coal technology option from geological-engineering-environmental viewpoint (less polluting and high efficiency) for extracting energy from coal without digging it out or burning it on the surface.
Arup Kumar Biswas +3 more
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Fuel, 2018
Abstract Underground gas gasification (UCG) is a clean coal technology which involves in-situ gasification of deep-seated underground coal. The process can be divided in two phases based on state of coal seam and direction of cavity growth. In phase-I, cavity grows mainly in vertical direction while in phase-II it grows in horizontal direction.
Anuradda Ganesh +4 more
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Abstract Underground gas gasification (UCG) is a clean coal technology which involves in-situ gasification of deep-seated underground coal. The process can be divided in two phases based on state of coal seam and direction of cavity growth. In phase-I, cavity grows mainly in vertical direction while in phase-II it grows in horizontal direction.
Anuradda Ganesh +4 more
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Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2023
In this work, the process of Underground Coal Gasification (UCG) was studied experimentally and numerically. The typical cavity of UCG was a half-teardrop shape. The coal samples were collected from Mae Moh coal mine, Thailand. The coal type is mainly lignite.
Whacharapat Wattanasrirote, Whacharapat Wattanasrirote +4 more
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In this work, the process of Underground Coal Gasification (UCG) was studied experimentally and numerically. The typical cavity of UCG was a half-teardrop shape. The coal samples were collected from Mae Moh coal mine, Thailand. The coal type is mainly lignite.
Whacharapat Wattanasrirote, Whacharapat Wattanasrirote +4 more
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Field test of large-scale hydrogen manufacturing from underground coal gasification (UCG)
International Journal of Hydrogen Energy, 2008Abstract The paper explores the reliability of using an underground coal gasification (UCG) technique for hydrogen manufacturing. Methods for increasing the temperature in underground gasifier are analyzed with the aim of improving the hydrogen-manufacturing process. In this paper, the rationales behind hydrogen manufacturing in UCG is explained. The
Xing Zhang +4 more
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