煤炭地下气化是我国废弃煤炭资源开发利用的重要方式,煤炭地下气化制氢是生产洁净能源的重要思路。两阶段地下气化工艺生产的水煤气,H2体积分数可达70%以上,脱除CO2后,可燃气体体积分数高达95%,是目前最廉价的氢气来源。煤气中的CO2分离后可储存于地下燃空区,或用于化工合成、煤层气及石油增产。最后针对目前煤炭地下气化领域中存在的问题提出了相应的解决措施。

Underground coal gasification (UCG) is an important way for the uilization of abandoned coal resources and also a new way for generating hydrogen.Th e water-gas from the two-stage underground gasification is the most economic source of hydrogen currently, in which the content of hydrogen reaches over 70% .After t he removal of CO2, the combustible gases account about 95%.CO2 in the gas can be separated and stored in underground combustion apace area, or used in chemical industry synthesization, coal bed gas and oil production increase. Finally, according to the problems existed in UCG field, the author put forward relative suggestions.