Companded total condensation loxboil air distillation
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United States of America Patent
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Apr 4, 1989
Grant Date -
N/A
app pub date -
Apr 18, 1986
filing date -
Apr 18, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention discloses method and apparatus for achieving higher O.sub.2 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. Compander driven compressor (5) boosts the pressure of a minor fraction of air which totally condenses to evaporate LOX in evaporator (6), and liquid air is split into 2 intermediate refluxes.
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