Research On Gas Recovery And Utilization Technology In Mine Return Current

Return air mine gas accounting for 80% of the total emissionis about a very impressive total, but because of its concentration is too low, the use of it is very difficult.For a long time, most of the mine gas is discharged directly back to the romantic atmosphere. Methane is a greenhouse effect and ozone depletion caused by major harmful gases, is also a high quality clean energy, massive direct vent gas atmosphere not only brought great destruction, but also caused a serious waste of energy.With the continuous development of China's coal industry, the continuous extension of the depth of the mine, mine gas emissions back to the air flow will also be greater, mine back to the air flow and use of gas need to be governed. By analyzing the CDM in China coal mine gas control method of application, proof of coal mine gas in particular, the use of gas in Return Air has broad application prospects. Mine by several flexible application mode back to oxidation air flow gas analysis of the economic benefits of comparison, the oxidation rate of return air flow of gas the most important factors for adjustable gas concentration. Merry in the back of the existing mine gas utilization technology on the basis of a detailed study, comparing noted that the inadequacies of the traditional techniques, based on High Temperature Air Combustion theory, the introduction of better promotion prospects for counter-current oxidation technology. That the oxidation of methane concentration and mine ventilation and safety requirements of the gas concentration limit on the conflict between the comparative analysis of the common methods of increasing the gas concentration in scope and lack of fixed rate by FICK and the corresponding thermodynamic theory can be identified description of the natural gas floating movement of the physical model.Theoretical analysis and experimental studies have shown that the use of molecular self-CH4 gas plume of gas separation floating ideas are reasonable, by physical methods to achieve the enrichment of mine back to the romantic CH4 recovery is possible, CH4 Return Air mine has a good separation and recovery technology engineering feasibility and application prospects.