Cryogenic separation process for oxygen containing mixtures, structured packing for use in same, and air distillation column comprising such packing.

摘要

The cryogenic separation process comprises the stage of performing a heat and material exchange in at least one transfer zone where the oxygen concentration is higher than 98 % and/or the pressure is higher than 1.5 x 10<5> Pa absolute, with a packet of packings (2) in which the sheets (3) are made of aluminium strip of controlled thickness of between 0.3 and 1 mm, the packet of sheets having a specific surface lower than 400 m<2>/m<3>. ……