Research progress in separation of low concentration coalbed methane by hydrate method

Abstract

The recovery of methane from low concentration coalbed methane can improve the utilization rate of coalbed methane, reduce the environmental pollution caused by gas emissions, and achieve the role of energy saving and emission reduction. In this paper, the recent research progress in hydrate separation of low concentration coalbed methane is analyzed, and the effects of thermodynamic promoters, kinetic promoters and mechanical strengthening are summarized respectively. Through the analysis, it is found that the effect of promoters needs to be further studied, and the appropriate promoters should be selected to find an effective way to promote the rapid synthesis of hydrate and help to promote the technical research on the separation and purification of low concentration coalbed methane by hydrate method.