Recovery of oxygen-rich gas from ozone bleaching processes

Details Recovery of oxygen-rich gas from ozone bleaching processes Recovery of oxygen-rich gas from ozone bleaching processes

D - Textiles, Paper

21

C

D21C 9/153 (2006.01) C01B 13/02 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2078276

A method and installation for bleaching a lignocellulosic pulp with ozone, while recovering an oxygen-rich gas; bleaching of the pulp with ozone is carried out under conditions in which ingress of air is prevented; oxygen-rich vent gas typically containing at least 90%, by weight, of oxygen is recovered and can be used in different oxygen consuming operations in a pulp mill.

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