| 摘要 |
<p>In an air fractionation system, an O2 stream (44, 46, 47, 48) containing krypton (Kr) and xenon (Xe) from a nitrogen-oxygen separation column (5, 6) is fed to an enrichment column (36) which yields a Kr-Xe rich, liquid product stream (51). Following passage through mixing (26) and addition (27) columns, stream (28) provides gaseous (30) and liquid (27) O2 products containing minimal Kr and Xe. An Independent claim is included for a low temperature fractionation arrangement.</p> |
