| 摘要 |
An heat exchange-cum-rectification apparatus comprises (a) a heat exchanger 12 having a first set of passages 14 for separating by dephlegmation a first flow of compressed vaporous air into nitrogen-rich fluid and oxygen-enriched liquid air, and, in heat exchange relationship with said first set of passages 14, a second set of passages 16 for separating by stripping reboiling an oxygen product from the oxygen-enriched liquid air, and (b) a valve 26 for reducing the pressure of the oxygen-enriched liquid air intermediate the said first and second sets of passages 14 and 16. <IMAGE> |
