Results 11 to 20 of about 215 (139)
Gas Production Strategy of Underground Coal Gasification Based on Multiple Gas Sources [PDF]
The Scientific World Journal, Volume 2014, Issue 1, 2014., 2014 To lower stability requirement of gas production in UCG (underground coal gasification), create better space and opportunities of development for UCG, an emerging sunrise industry, in its initial stage, and reduce the emission of blast furnace gas, converter gas, and coke oven gas, this paper, for the first time, puts forward a new mode of utilization ...
Duan Tianhong +4 more
wiley +2 more sources
Effects of water injection on reaction temperature and hydrogen production in horizontal co-axial underground coal gasification [PDF]
Scientific ReportsUnderground coal gasification (UCG) is process of directly recovering energy as combustible gases such as hydrogen and carbon monoxide by combusting unmined coal resources in situ. During UCG process, the temperature in the gasification zone can exceed 1,
Rika Iriguchi +8 more
doaj +2 more sources
Applied Sciences, 2023 As a green, safe, and efficient method of coal development, underground coal gasification (UCG) technology has gradually moved from the experimental stage to the industrial production stage.
Xiaopeng Liu, Liangji Xu, Kun Zhang
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Geofluids, Volume 2022, Issue 1, 2022., 2022 The shape of the gasifier cavity and the high temperatures induced by underground coal gasification (UCG) have a significant influence on the failure characteristics of the surrounding rock. In this study, the variations in the mechanical properties of the surrounding rock in gasifier cavities subjected to different temperatures (20–700°C) were ...
Yue Shi +6 more
wiley +1 more source
Geofluids, Volume 2022, Issue 1, 2022., 2022 Based on the thermodynamic and elastodynamic theories, the controlling equation of temperature‐stress coupling action on rocks containing random damage units is established by combining the Mogi‐Coulomb damage criterion. And the numerical calculation model of combustion cavity expansion under temperature‐stress coupling condition is established by ...
Zhaolin Li +4 more
wiley +1 more source
International Journal of Research in Vocational Studies (IJRVOCAS), 2021 Underground Coal Gasification is a method used to convert underground coal seams into a gaseous product commonly called synthetic gas through a flammable chemical process without going through a conventional mining process. The UCG concept was first developed in England which was then continued by the Soviet Union in field trials of UCG which was used ...
Aida Syarief, Abu Hasan, Joniken Lesmana
openaire +2 more sources
OVERVIEW OF UNDERGROUND COAL GASIFICATION (UCG) – FOR A PROMISING FUTURE OF INDIA [PDF]
International Journal of Engineering Applied Sciences and Technology, 2021 Underground coal gasification (UCG) is a process to use and convert deep and economically un-mineable coal into syngas for further use in electric power, liquid fuels and synthetic natural gas etc. Underground Coal gasification is a very promising option for the future use of coal present in INDIA.
openaire +1 more source
Energies, 2021 One of the most important issues during UCG process is wastewater production and treatment. Condensed gasification wastewater is contaminated by many hazardous compounds. The composition of the generated UCG-derived wastewater may vary depending on the type of gasified coal and conditions of the gasification process.
Magdalena Pankiewicz-Sperka +3 more
openaire +3 more sources
Advances in Materials Science and Engineering, Volume 2020, Issue 1, 2020., 2020 Rock destruction under high‐temperature conditions is a key issue for nuclear waste treatment projects, underground coal gasification, and improvement of the use of geothermal energy for heating. Therefore, in this study, various methods and techniques were integrated to study the changes in mechanical properties, mineral composition, and microscopic ...
Jian Li +3 more
wiley +1 more source
CFD Simulation of Temperature Variation in Carboniferous Rock Strata During UCG
Journal of Sustainable Mining, 2013 The numerical simulation was based on the computational fluid dynamics formalism in order to identify the change of temperature in rock strata during underground coal gasification (UCG).
Tomasz Janoszek +2 more
doaj +1 more source