Optimum thermodynamic conditions (temperature T = 1223-1273K, pressure 0.1-0.2 MPa) of underground coal gasification process under which the marginal volumetric composition of synthesis gas is: CO - 50% H2 - 50% were obtained
For determining the reservoir temperature and pressure in the area of synthesis of an underground coal gasification based on composition of gases that come to the surface through wells there were created equations based on the equilibrium chemical thermodynamics of multicomponent systems . Comparison of theoretically calculated composition of gas temperature and pressure with experimental data obtained on UHT-2 installation, indicates the following: the temperature error is 3-5% and 6-9% for pressure, which is quite satisfactory for the geothechnology processes.
The parameters of the process for obtaining synthesis-gas in UHT-2 installation reactor with external heating and pretreatment of water vapor were calculated. A series of experimental studies using the UHT-2 installation was conducted to obtain synthesis gas under different thermodynamic conditions . The optimal thermodynamic parameters of a synthesis gas by underground coal gasification for the Lviv-Volyn Basin ware determined.
The methodology for location of underground gasification areas based on complex geological criteria and the methodology for estimating gas reserves it was elaborated that can be obtained during underground gazification
Geotechnology of underground gasification of coal seams of the Lviv-Volyn basin for hydrogen was developed . Applied result of the work is in the possibility of direct implementation of underground coal gasification technologies for hydrogen in defined areas of coal seams within the field of Tyahlivska - 1 mine.
Keywords: UNDERGROUND COAL GASIFICATION; HYDROGEN; COAL QUALITY; THICKNESS OF A BED; LOW-AMPLITUDE TECTONIC DISLOCATIONS; LITHOLOGICAL COMPOSITION OF ROCK ROOF AND BOTTON;
MELTING POINT OF MINERAL COMPONENTS