Results 261 to 270 of about 57,328 (310)

Underground gasification of coal and lignite

Coke and Chemistry, 2016
The underground gasification of coal and lignite is of interest when traditional coal extraction is impossible or unprofitable and also with increasing demand for thermal and/or electric power. In the Soviet Union, at six industrial Podzemgaz stations, beginning in the 1930s, more than 15 million t of coal was processed to obtain more than 50 billion ...
A. M. Poturilov, Yu. E. Proshunin
openaire   +2 more sources

Underground coal gasification problems

Solid Fuel Chemistry, 2009
In the 4th UCG International conference which was held in February 2009 more than 20 reports on various UCG problems were presented. Australia, Canada, the United States, the Republic of South Africa, India, China and others are among the countries that actively participate in testing of the capabilities of UCG, evaluating of the resource base, and ...
E. V. Kreinin, A. Yu. Zorya
openaire   +2 more sources

Status of Underground Coal Gasification

Mineral Processing and Extractive Metallurgy Review, 1985
Underground coal gasification appears to be one of the most attractive routes for synfuels from coal because the process can produce methanol and substitute natural gas at prices competitive with existing energy sources. The technical feasibility of underground coal gasification has been well established by small scale field tests. Cost estimates based
D. R. Stephens, R. W. Hill, I.Y. Borg
openaire   +2 more sources

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   +3 more sources

An Integrated Model for Underground Coal Gasification

SPE Annual Technical Conference and Exhibition, 1994
Abstract Underground coal gasification receives renewed interest in both Western and Eastern Europe because of the vast amounts of otherwise unminable coal deposits that occur on the European continent. A field test is currently being carried out in Spain. Other countries in Europe show interest in this method of utilizing
E.N.J. Biezen, Johannes Molenaar, Johannes Bruining   +2 more
openaire   +2 more sources

The Underground Gasification of Sub-Bituminous Coals

Proceedings of SPE Rocky Mountain Regional Meeting, 1974
This paper was prepared for the Rocky Mountain Regional Meeting of the Society of Petroleum Engineers of AIME, to be held in Billings, Mont., May 15–16, 1974. Permission to copy is restricted to an abstract of not more than 300 words. Illustrations may not be copied.
John F. Evers, James W. Jennings
openaire   +2 more sources

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?
J. Gibson, L. Grainger
openaire   +2 more sources

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 Kanti Ghose, Biswajit Paul
openaire   +2 more sources

Data-Driven Modeling and Design of Multivariable Dynamic Sliding Mode Control for the Underground Coal Gasification Project Thar

IEEE Transactions on Control Systems Technology, 2022
The energy output per unit time is an important performance metric to determine the potential of an underground coal gasification (UCG) site for electricity production.
Syed Bilal Javed, V. Utkin, A. Uppal, R. Samar, A. I. Bhatti   +4 more
semanticscholar   +1 more source

An Appraisal of Underground Coal Gasification

Proceedings of Fall Meeting of the Society of Petroleum Engineers of AIME, 1973
This paper was prepared for the 48th Annual Fall Meeting of the Society of Petroleum Engineers of AIME, to be held in Las Vegas, Nev., Sept. 30-Oct. 3, 1973. Permission to copy is restricted to an abstract of not more than 300 words. Illustrations may not be copied.
openaire   +2 more sources