Results 121 to 130 of about 272 (156)
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Hydrogen production in underground coal gasification (UCG)
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2016ABSTRACTIn this article, the rationales of the hydrogen production in underground coal gasification are explained. The experimental conditions and process of the underground gasification in the Liuzhuang Mine, Tangshan, Hebei Province are introduced, and the experimental results are analyzed.
L. H. Yang, X. Zhang, K. Zhu
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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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Reactor Model for the Underground Coal Gasification (UCG) Channel
International Journal of Chemical Reactor Engineering, 2006Underground Coal Gasification (UCG) is the process of in-situ conversion of coal into combustible products (syngas) which can be used either as fuel or as a chemical feedstock. In this study, the gasification channel is viewed as a one-dimensional packed bed reactor.
Anil N. Khadse +3 more
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Kinetic modeling of Indian lignites pyrolysis in the context of underground coal gasification (UCG)
Fuel, 2021Abstract Pyrolysis is an important step in combustion and gasification of any solid fuel. In this work, we have studied the kinetics of the pyrolysis of three Indian lignite samples via thermogravimetric experiments and mathematical modeling. Applicability of various kinetic models viz. the single global reaction model, the consecutive reaction model
Ramesh Naidu Mandapati +1 more
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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 ...
Dorota Burchart-Korol +3 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.
Fa Qiang Su +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.
Fa Qiang Su +4 more
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Reservoir-Geomechanics of Underground Coal Gasification (UCG)
2016The Underground Coal Gasification (UCG) is still not in a worldwide operation despite inheriting an old idea which is nearly one and a half century old. Aside from effects by other fuel sources on development of the UCG and from a technical perspective, this delay is due to the complex nature of the process.
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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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A Study of Underground Coal Gasification (UCG) Wastewater and Sludge
2015Underground coal gasification (UCG) is a non-conventional method of extracting gas from coal. The primary advantage of UCG is that it recovers gas from uneconomical or unminable coal, potentially increasing the value of the world’s coal reserves by an estimated 70%; for this reason, UCG has been implemented at sites around the world.
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The Dynamic Temperature Field of Two-Stage Underground Coal Gasification (UCG)
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2006Two-stage UCG is an effective technique to produce water gas with high heating value; its gas producing process is mainly determined by temperature. On the basis of the model experiment, via the analysis of the temperature field distribution regularity in the gasified coal layers in the gasifier and the generalization and treatment of the boundary ...
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