Results 31 to 40 of about 215 (139)

Cold Flow Simulation in Underground Coal Gasification (UCG) Cavities

open access: yesJournal of Advanced Thermal Science Research, 2014
Underground coal gasification (UCG), in the recent years, have gathered a significant amount of interest from the researchers because of its advantages over conventional mining and utilization techniques. It is one of the most promising and innovative technology where coal is gasified in-situ by injection of a suitable oxidant for the production of ...
Satish Kumar Gupta   +3 more
openaire   +2 more sources

Evaluation of Structural Changes in the Coal Specimen Heating Process and UCG Model Experiments for Developing Efficient UCG Systems

open access: yesEnergies, 2013
In the underground coal gasification (UCG) process, cavity growth with crack extension inside the coal seam is an important phenomenon that directly influences gasification efficiency. An efficient and environmentally friendly UCG system also relies upon
Gota Deguchi   +4 more
doaj   +1 more source

Effect of Injection Flow Rate on Product Gas Quality in Underground Coal Gasification (UCG) Based on Laboratory Scale Experiment: Development of Co-Axial UCG System

open access: yesEnergies, 2017
Underground coal gasification (UCG) is a technique to recover coal energy without mining by converting coal into a valuable gas. Model UCG experiments on a laboratory scale were carried out under a low flow rate (6~12 L/min) and a high flow rate (15~30 L/
Akihiro Hamanaka   +5 more
doaj   +1 more source

The Underground Coal Gasification Process in Laboratory Conditions: An Experimental Study

open access: yesEnergies, 2023
The underground coal gasification (UCG) process represents a modern and effective coal mining technology that enables coal energy extraction through thermic decomposition.
Marek Laciak   +3 more
doaj   +1 more source

Evaluation of a Compact Coaxial Underground Coal Gasification System Inside an Artificial Coal Seam

open access: yesEnergies, 2018
The Underground Coal Gasification (UCG) system is a clean technology for obtaining energy from coal. The coaxial UCG system is supposed to be compact and flexible in order to adapt to complicated geological conditions caused by the existence of faults ...
Fa-qiang Su   +5 more
doaj   +1 more source

Computational Studies for Underground Coal Gasification (UCG) Process

open access: yesIOP Conference Series: Earth and Environmental Science, 2017
Underground coal gasification (UCG) is a well proven technology in order to access the coal lying either too deep underground, or is otherwise too costly to be extracted using the conventional mining methods. UCG product gas is commonly used as a chemical feedstock or as fuel for power generation.
openaire   +2 more sources

Applicability of Acoustic Emission Monitoring to Estimate Gasification Area in Underground Coal Gasification

open access: yesJournal of MMIJ
Underground Coal Gasification (UCG) is a promising process for recovering energy from potential underground coal resources as combustible gases such as hydrogen and carbon monoxide.
Akihiro HAMANAKA   +7 more
doaj   +1 more source

APPROACHES TO THE GAS CONTROL IN UCG

open access: yesActa Polytechnica, 2017
Underground Coal Gasification represents an alternative for conventional coal mining. This technology is also less expensive than traditional mining. It is expected that coal will be an important energy source in the coming decades.
Ján Kačur, Karol Kostúr
doaj   +1 more source

Model-Free Control of UCG Based on Continual Optimization of Operating Variables: An Experimental Study

open access: yesEnergies, 2021
The underground coal gasification (UCG) represents an effective coal mining technology, where coal is transformed into syngas underground. Extracted syngas is cleaned and processed for energy production.
Ján Kačur   +3 more
doaj   +1 more source

Coal Seam Roof and Floor Lithology Prediction for Underground Coal Gasification Based on Deep Residual Shrinkage Network

open access: yesEnergy Science &Engineering, Volume 13, Issue 3, Page 1361-1374, March 2025.
This study proposes the deep residual shrinkage network (DRSN), a model combining advanced strategies for rapid and accurate lithology prediction. It enables efficient lithology evaluation in early underground coal gasification. ABSTRACT Lithology identification is a crucial task in coal underground gasification projects, serving as a prerequisite for ...
Jialiang Guo, Ruizhao Yang, Fengtao Han
wiley   +1 more source

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