Impact of Process Parameters on Oxygen-bearing Low Concentration Coal Mine Methane Enrichment by Proportion Pressure Swing Adsorption
Conventional PSA methods with a single adsorbent can result in an explosive CH4 concentration of 5 to 15%,making low concentration coal mine methane (LCCMM) or risky in terms of safety at a concentration of 30%.Proportion Pressure Swing Adsorption (PPSA) is a new and safer enrichment method suggested for LCCMM enrichment that uses a mixture of active carbon (AC) and carbon molecular sieves (CMS) as adsorbents.The effect of adsorption Pressure,adsorption time and bed length on the PPSA process were investigated to verify the feasibility of this method.The experiment results show that the methane concentration in desorption gas and the oxygen concentration in exhaust gas increased and decreased,respectively,with an increase in adsorption pressure or bed length.And the methane concentration in desorption gas is increased with the adsorption time expanding,but the recovery of methane is reduced.So the methane concentration in desorption gas can be increased to more than 30% and the oxygen concentration in exhaust gas be decrease to less than 12% by increasing the adsorption pressure or lengthening the bed.
coal mine methane Proportion Pressure Swing Adsorption low concentration oxygen-bearing enrichment
Yongling Li Yingshu Liu Xiong Yang Yu meng Chuanzhao Zhang
School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, 100083,China
国际会议
太原
英文
961-965
2012-06-23（万方平台首次上网日期，不代表论文的发表时间）