| 摘要 |
<p>Method and apparatus for achieving higher O2 delivery pressure coupled with high product recovery in cryogenic air distillation plants, without additional power consumption. Products include high purity oxygen plus coproduct argon, or medium purity oxygen plus optional coproduct nitrogen. Refrigeration expander (10) drives warm-end compressor (5) to boost the pressure of a minor fraction of the supply air, which totally condenses to evaporate liquid oxygen in LOXBOIL evaporator (6). The resulting liquid air is split into two intermediate reflux streams by valves (7) and (8) for columns (2) and (1) respectively.</p> |
