| 摘要 |
<p>The separation process involves withdrawing an oxygen-containing recycle fraction (18a) from the single column (12) in liquid form; cooling the oxygen-containing recycle liquid fraction in a counter-current subcooler (100); evaporating the cooled oxygen-containing recycle fraction (18b) in a top condenser-evaporator (13); re-compressing the evaporated oxygen-containing recycle fraction (29) in a re-compressor (30); and introducing the re-compressed recycle fraction (31,32) into the lower region of the single column. An independent claim is also included for an apparatus for cryogenic air separation in a distillation column system.</p> |
