CRYOGENIC AIR SEPARATION SYSTEM WITH DUAL TEMPERATURE FEED TURBOEXPANSION

摘要

CRYOGENIC AIR SEPARATION SYSTEM WITH DUAL TEMPERATURE FEED TURBOEXPANSION A cryogenic air separation system comprising at least two columns wherein two portions of the feed air are turboexpanded at two different temperature levels to generate refrigeration, a third portion is condensed against vaporizing product from the air separation plant, and all three portions are fed into the same column to undergo separation.