METHODS FOR THE SEPARATION OF CO2 FROM SYNGAS IN THE UCG PROCESS

This paper deals about overview the methods of the CO2 separation and sequestration. There are described various possible methods that can be used in underground coal gasification process for best performance of underground gasifier. Separated CO2 from the syngas can be returned to the process along with injected air. Added CO2 supports chemical reaction where calorific CO in syngas is produced during gasification. Paper describe classical methods of CO2 sequestration e.g. membrane, chemical based separation, zeolites utilization and new progressive technologies (e.g. metal organic frameworks, CO2 hollow fiber membrane and polymer membranes). Paper provides description of these methods and shows to possible application in gas production industry. Authors perform some experimental gasification and provided results show the relevancy of utilization of CO2 considering its percentage volume in produced syngas.