| Abstract Coal mine methane (CMM) is becoming a significant substitution for regular natural gas resource in China. The exploitation and utilization for CMM will play an important role in enriching energy supply, improving energy structure and reducing greenhouse gas emission, especially under the circumstance of developing low��carbon economy. For the current situation of underground drainage, CMM blends with oxygen will result in extremely difficulty for its sequent processing and utilization. Consequently, the critical parameter for CMM safe operation under pressure condition was determined by means of amending the explosive limit of CMM. Furthermore, the mathematical model of oxygen��blend CMM membrane separation using hollow��fiber membrane was built simultaneously. The influence of membrane module parameter and operational condition on membrane separation effect were imvestigated by orthogonal analysis so as to guide the selection of membrane module and the design and optimization of membrane process. |
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2010, Vol. 27 
