Results 81 to 90 of about 1,378 (225)

Th gme 10: A numerical model to capture the geotechnical response to coal combustion at an underground coal gasification site [PDF]

open access: yes, 2015
A detailed numerical modelling study was carried out to represent geotechnical aspects of the Wieczorek underground coal gasification (UCG) site in Poland. A coupled thermos-mechanical numerical model was created to represent a single coal burning panel.
Ekneligoda, TC   +4 more
core  

Thermo-Mechanical Simulations of Rock Behavior in Underground Coal Gasification Show Negligible Impact of Temperature-Dependent Parameters on Permeability Changes

open access: yesEnergies, 2015
A coupled thermo-mechanical model has been developed to assess permeability changes in the vicinity of an underground coal gasification (UCG) reactor resulting from excavation and thermo-mechanical effects.
Christopher Otto, Thomas Kempka
doaj   +1 more source

SCIENTIFIC SUBSTANTIATION OF ENERGY-EFFICIENT AND LOW- WASTE TECHNOLOGY OF CARBOHYDRATE RESOURCES DEVELOPMENT [PDF]

open access: yes, 2018
Scientific substantiation and development of energy-efficient low- waste technology for hydrocarbon raw materials extraction by changing its aggregate state by physico-chemical interference, taking into account the ...
LOZYNSKYI, Vasyl   +15 more
core  

Synthesis Gas Composition Prediction for Underground Coal Gasification Using a Thermochemical Equilibrium Modeling Approach

open access: yesEnergies, 2020
Underground coal gasification (UCG) is an in situ conversion technique that enables the production of high-calorific synthesis gas from resources that are economically not minable by conventional methods. A broad range of end-use options is available for
Christopher Otto, Thomas Kempka
doaj   +1 more source

Five unconventional fuels: geology and environment [PDF]

open access: yes, 2014
Unconventional fuels may present a viable partial replacement for conventional fossil fuel reservoirs (such as sandstone and limestone) in rocks onshore and offshore.
Stephenson, Michael H.
core  

Fundamental Experiments for Developing Underground Coal Gasification (UCG) System

open access: yesFundamental Experiments for Developing Underground Coal Gasification (UCG) System
application/pdf For Underground Coal Gasification (UCG), it is necessary to evaluate the combustion area in the coal seam precisely. We are planning to use acoustic emission/microseismicity (AE/MS) monitoring for estimation of the underground combustion area. Analyzing the AE/MS waveforms from underground rocks, fracture extension around the combustion
openaire   +1 more source

Research into heat and mass indicators of coal gasification process [PDF]

open access: yes, 2019
Розглянута можливість заміщення природніх видів палива альтернативним енергоносієм – генераторним газом. Оцінено його теплотехнічні характеристики в порівнянні з природним газом.
Ганушевич, К. А.   +4 more
core   +2 more sources

Rock massif observation from underground coal gasification point of view [PDF]

open access: yesMetalurgija, 2009
The Underground coal gasification (UCG) of the coal seams is determined by suitable geological structure of the area. The assumption of the qualitative changes of the rock massif can be also enabled by application of geophysical methods (electric ...
T. Sasvári, J. Durove, B. Pandula
doaj  

Analysis of Risk Factors for Underground Coal Gasification

open access: yesManagement Systems in Production Engineering, 2019
The purpose of this article is to determine the environmental impacts of underground gasification on the population and to analyze the risk of underground coal gasification (UCG) activities using selected risk assessment methods.
Škvareková Erika   +3 more
doaj   +1 more source

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