Enrichment of Oxygen-Containing Low-Concentration Coalbed Methane with CMS-3KT as the Adsorbent.

ABSTRACT: A type of carbon molecular sieve (CMS-3KT) was used as the adsorbent for the CH₄ enrichment of a methane/oxygen/nitrogen (CH₄/O₂/N₂) mixture using micro-positive pressure vacuum pressure swing adsorption (∼120 kPa). The adsorption isotherms of individual CH₄, O₂, and N₂ on CMS-3KT were studied and fitted. The results indicated the important influence of the adsorbent surface heterogeneity on the adsorption equilibrium process. In addition, the interaction of adsorbent-adsorbate in this process was studied from the measured adsorption heat. The adsorption uptake curves were fitted linearly with a classical micropore model for evaluating the kinetics-based separation possibility of CH₄/O₂/N

SUBMITTER: Zhang J 

PROVIDER: S-EPMC7970559 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature