Results 251 to 260 of about 56,023 (314)

Stress-Dependent Characteristics of Coal Permeability in Gasification Zone of Underground Coal Gasification

All Days, 2023
Underground coal gasification (UCG) is an environment friendly way to produce coal resource and its efficiency depends on gas flow through porous medium.
Yufeng Zhao, Zhen Dong, Yanpeng Chen, Hao Chen, J. Xue, Shanshan Chen, Mengyuan Zhang, Yan Peng   +7 more
semanticscholar   +1 more source

Underground Coal Gasification and Combustion

2018
Underground Coal Gasification (UCG) is carried out in unmined coal seams, using wells drilled from the surface and converting coal into synthesis gas. The gas can be used for power generation and synthesis of automotive fuels, fertilizers and other products.
Blinderman, Michael S., Klimenko, Alexander Y.   +1 more
openaire   +2 more sources

Environmental concerns of underground coal gasification

Renewable and Sustainable Energy Reviews, 2014
Abstract Underground Coal Gasification is the conversion of solid Coal to gas in-situ by heating the coal and injecting oxidants air/oxygen to cause the gasification by partial combustion instead of complete combustion of coal. UCG is the promising technology having a lot of health, safety and environmental advantages over the conventional mining ...
Muhammad Imran, Dileep Kumar, Naresh Kumar, Abdul Qayyum, Ahmed Saeed, Muhammad Shamim Bhatti   +5 more
openaire   +1 more source

Underground Coal Gasification Research

Journal of Energy Resources Technology, 1983
Recent successful field tests of underground coal gasification, UCG, have demonstrated the potential for UCG commercialization. This paper presents results of mathematical modeling and laboratory research studies which have been conducted to improve our understanding of the complex processes involved.
openaire   +1 more source

Economics of Underground Coal Gasification

1981
As with other coal utilisation processes, economics will be decisive in determining the degree of exploitation of a technically feasible operation. In the case of Underground Coal Gasification (UCG) there are several important economic questions: (1) How does UCG compare with other methods of exploiting coal resources?
L. Grainger, J. Gibson
openaire   +1 more source

Underground coal gasification: a neglected option

International Journal of Environmental Studies, 2007
The energy sector is crucial to development. Coal is the prime energy resource in the foreseeable future. There is urgent need to develop alternative energy sources, which are cleaner and able to meet the demand and supply gap of energy for development in an environmentally sustainable manner. Underground coal gasification is a neglected option.
Mrinal K. Ghose, Biswajit Paul
openaire   +1 more source

Review of Underground Coal Gasification Technologies

2016 3rd International Conference on Green Technology and Sustainable Development (GTSD), 2016
In the wake of increasing challenges of high prices of oil and gas and uncertainties about political stability in many oil and gas producing countries, coal becomes more and more important in the coming years for its vast reserves and wide distribution all over the world.
Nguyen Le Hong Son, Nguyen Hoang Anh, Hoang Ngoc Dong   +2 more
openaire   +1 more source

Underground coal gasification: issues in commercialisation

Proceedings of the Institution of Civil Engineers - Energy, 2014
Back in 2007, it was expected that commercial gas production from underground coal gasification (UCG) technology would be in progress within the following 5 years. This has not occurred, particularly in Australia, where at the time three commercial projects were being aggressively pursued.
openaire   +1 more source

Commercial development of underground coal gasification

Proceedings of the Institution of Civil Engineers - Energy, 2007
Underground coal gasification (UCG) is a process by which coal seams at depths uneconomic for open pit mining can be converted, using drillhole access, to a gas suitable for use as a fuel for power generation or as a chemical feedstock. Its application draws on a wide range of engineering and related disciplines including chemistry, geology ...
openaire   +1 more source

In-Situ Processes: Underground Coal Gasification

1981
The idea of recovering the energy values of coal by in-situ processes, without the intervention of human effort below ground and without bringing waste to the surface, is one which has exceptional appeal to the public. For this reason alone, a careful analysis of the possibilities is desirable, regularly renewed in the light of developing technology ...
L. Grainger, J. Gibson
openaire   +1 more source