YANG Ying, QU Donglei, LI Ping, et al. Research and development on enrichment of low concentration coal mine methane by adsorption technology[J]. CIESC Journal, 2018, (11): 4518-4529.
YANG Ying, QU Donglei, LI Ping, et al. Research and development on enrichment of low concentration coal mine methane by adsorption technology[J]. CIESC Journal, 2018, (11): 4518-4529.DOI: 10.11949/j.issn.0438-1157.20180602.
less gas and lean oil. The coalbed methane reserves are about 30 trillion cubic meters. Due to the lack of advanced and practical separation technology for the low concentration coal mine methane (CMM)
only about 50% total drained CMM is utilized at present. The recovery and utilization of low concentration CMM provide a number of significant energy
economic and environmental benefits. Situation of extraction and utilization of CMM resource in China is briefly introduced. Research on adsorption materials and adsorption processes for the enrichment of low concentration CMM in recent years have been surveyed and future research on these two areas has been discussed. The adsorption capacity and selectivity of the adsorbents is low when they are used to separate low concentration coal mine methane. And the performance of the typical pressure swing adsorption (PSA) process is limited. Finally
the development of adsorbents with high CH4 adsorbed amount and high CH4/N2 selectivity and novel PSA process are proposed for the future enrichment of low concentration coal mine methane.