Results 21 to 30 of about 215 (139)
Eng, 2023 Underground coal gasification (UCG) is the process of directly recovering energy as combustible gases such as hydrogen and carbon monoxide by combusting unmined coal resources in situ.
Rika Iriguchi +8 more
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An Overview of the Chinese UCG Program
Data Science Journal, 2007 Coal is the dominant source of energy in China, but about 50% of the coal resource is left underground unmined. Because of this, the "long-tunnel, large section, two-stage" Underground Coal Gasification (UCG) technology has been put forward, and the UCG ...
Yulan Li, Xinxing Liang, Jie Liang
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Effect of Lignite Properties on Its Suitability for the Implementation of Underground Coal Gasification (UCG) in Selected Deposits [PDF]
Energies, 2021 Two experimental simulations of underground coal gasification (UCG) processes, using large bulk samples of lignites, were conducted in a surface laboratory setup. Two different lignite samples were used for the oxygen-blown experiments, i.e., “Velenje” meta-lignite (Slovenia) and “Oltenia” ortho-lignite (Romania).
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International Journal of Research in Vocational Studies (IJRVOCAS), 2021 The advancement and utilization of technology require energy, namely electricity and fuel energy. The increasing cost of fossil energy, the scarcity of non-renewable energy sources and the increasing energy demand requires diversification of energy resources.
Julismi, Abu Hasan, Rusdianasari
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Control of Combustion/Gasification Area with Compact Underground Coal Gasification System
Journal of MMIJ, 2018 Underground coal gasification (UCG), a technique used to recover coal energy by the in-situ conversion of coal into gaseous products, enables recovery of coal energy from the potential coal resources abandoned under the ground for either technical or ...
Akihiro HAMANAKA +6 more
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Microbial degradation of organic pollutants in groundwater related to underground coal gasification
Energy Science &Engineering, Volume 7, Issue 5, Page 2098-2111, October 2019., 2019 The relationship between TOC in gas washing water with time degraded by WX and JC at pH = 7, 40°C, and 120 rpm. Two kinds of bacteria with high phenol degradation efficiency, named JC and WX, were isolated and screened from two types of activated sludges, and correspondingly identified as pseudomonas aeruginosa (NCBI number: Z76651) and achromobacter ...
Lunjian Chen +7 more
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Influence of coal properties on the CO2 adsorption capacity of coal gasification residues
Energy Science &Engineering, Volume 6, Issue 4, Page 321-335, August 2018., 2018 Influence of coal properties and gasification conditions on the adsorption capacities of CO2 on gasified coal chars is investigated. Four coals of diverse rank varying from lignite to bituminous were selected and subjected to CO2 gasification at atmospheric pressure for 10 min at 800, 900, and 1000°C under a low heating rate of 5°C/min. The CO2 storage
Pramod Sripada +4 more
wiley +1 more source
Acta Polytechnica, 2019 Underground coal gasification (UCG) is a technological process, which converts solid coal into a gas in the underground, using injected gasification agents.
Ján Kačur +3 more
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Measurements of Gasification Characteristics of Coal and Char in CO2‐Rich Gas Flow by TG‐DTA
Journal of Combustion, Volume 2013, Issue 1, 2013., 2013 Pyrolysis, combustion, and gasification properties of pulverized coal and char in CO2‐rich gas flow were investigated by using gravimetric‐differential thermal analysis (TG‐DTA) with changing O2%, heating temperature gradient, and flow rate of CO2‐rich gases provided.
Zhigang Li +5 more
wiley +1 more source
Ecotoxicology and Environmental Safety, 2015 The effect of coal rank on the composition and toxicity of water effluents resulting from two underground coal gasification experiments with distinct coal samples (lignite and hard coal) was investigated. A broad range of organic and inorganic parameters was determined in the sampled condensates.
Krzysztof Stańczyk, Krzysztof Kapusta
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