A new process of enhanced underground coal gasification (EUCG) has been demonstrated recently in successful semi-industrial tests at Zhong-Liang-Shan (ZLS) coal mine in China. The EUCG is featured using manbuilt pinnate channels and controlled moving injection points along coal-bed channel to produce syngas through underground coal gasification (UCG). To optimize the EUCG process, this field trial was performed with various operational manoeuvres, such as implementing controlled moving injection points, O 2 -enriched operation and variation of operational pressure. The results showed that these operational techniques of the EUCG can ensure the gas flow comparatively controllable and hence improve UCG performance significantly, providing both a higher efficiency of heat and a higher quality of the production syngas.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.