ABSTRACT
Hydrogen energy is a vita clean energy in the 21st century. Aiming at the resource characteristics of China's “rich coal, lack of oil and gas,” based on a thorough investigation of the deep coal seam underground gasification technology and the two-stage gasification process at home and abroad, it is believed that it is theoretically and technically feasible to produce high-hydrogen gas by using the in-situ two-stage gasification technology of deep coal seams. Moreover, according to the field experiment data, the hydrogen content in the gas produced by the two-stage method can reach more than 40%. In addition, deep coal seam underground gasification technology can also be combined with carbon capture and storage (CCS) and other technologies to achieve zero CO2 emissions and promote the clean and efficient use of traditional energy.
