| 摘要 |
<p>A process for low temperature air fractionation and an apparatus for the low temperature air fractionation by the same are provided to offer convenient low temperature air fractionation can be operated easily. A process for low temperature air fractionation comprises the following steps of: injecting injection air(8) to a single tower(12) from a main heat exchanger(9); flowing out nitrogen product streams(15,16,17) from the single tower; evaporating first residual fractions after flowing out the first residual fractions(14,19); expanding a first part(20) of the evaporated first residual fractions with a work-producing type; and emitting remained gaseous impure oxygen products(60).</p> |
