Institut za rudarstvo i metalurgiju Bor

Figure 3. Curves of changes in concentration of particular gas components at channel length for
one average stone coal [4]
CONCLUSION
Technology of coal converting coal into
gaseous fuels by the underground coal gasification
(UCG) is a technological achievement
that opens the way to the rational
power supply, and also for Serbia, to the
substitution of a part of imported power
fuels and reduction the energy dependence.
Significant reserves of coal and oil shale,
for which the use of standard underground
mining technology is not cost-effective,
refer to a necessity of researches and use
the underground gasification technology.
Only in the Aleksinac area the residual
coal reserves amount to 27 million tons
and there are also the available reserves of
oil shale to the amount of approximately 2
billion tons.
This work addresses the numerical approach
to the calculation the concentration
of gases in underground coal gasification
to the aim of more effective process control
and adjustment.
REFERENCES
[1] Petrović D., Study of Underground
Gasification and Possibilities of Use
in Off-balance Coal Reserves at the
Area of the Middle Bosnian Coal
Basin, Dissertation, MGF Tuzla, 1988
(in Serbian)
[2] Petrović D., Underground Coal
Gasification – the World Experiences,
Energija No.4, (1996), Belgrade (in
Serbian)
[3] Petrović D., Gas from Underground
Coal Gasification and Possibilities of
its Use, Symposium ENYU′99,
Zlatibor, 1999 (in Serbian)
[4] Petrović D., Menjić D., Numerical
Approach to the Process Solution of
Underground Coal Gasification,
International Symposium FEM,
Tuzla, 1990 (in Serbian)
[5] Ivković M., Đukanović D.,
Milenković J., Possibilities of Use the
Oilshales from the Aleksinac Area,
Energija, (2008), Belgrade (in
Serbian)
[6] Stjepanovic M., Popovic R.,
Scientific Basis for Optimization the
Underground Exploitations,
Textbook, Belgrade, 1991 (in
Serbian)
[7] Ljubojev M., Popović R., Basis of
Geomechanics, Textbook, Bor, 2006
(in Serbian)
[8] Polaski J., Gas and Heat Transport in
the Underground Coal Gasification,
Symposium Saarbricken, 1986
No 1, 2010. 134
MINING ENGINEERING