| 摘要 |
<p>Disclosed is a separation system capable of producing high-purity and high-recovery-rate methane. The gas separation system includes a pressurization unit for raw gas pressurization, a first refining unit that refines the raw gas which is pressurized by the pressurization unit so as to produce first refined gas and first waste gas, a second refining unit that refines the first refined gas so as to produce second refined gas and second waste gas, a third refining unit that refines the first waste gas so as to produce third refined gas and third waste gas, a buffer tank that is arranged at a front tip of the pressurization unit so that the raw gas and the produced second waste gas and third refined gas are input, a first recovery line that guides the second waste gas to the buffer tank, a second recovery line that guides the third refined gas to the buffer tank, a flow rate control vale that controls the flow rates of the first waste gas and the second waste gas, and a control unit that controls the flow rate control valve.</p> |
