Method and system for reacting ozone with pulp

Details Method and system for reacting ozone with pulp Method and system for reacting ozone with pulp

D - Textiles, Paper

21

C

92/60.1, 8/78.1

D21C 9/10 (2006.01)

Patent

CA 1181204

A METHOD AND SYSTEM FOR REACTING OZONE WITH PULP Abstract of the Disclosure Pulp is added to a pressurized vessel and, after being treated with ozone included in an ozone/oxygen gas mixture, is removed from the vessel at a treated pulp outlet located below the pulp inlet. The vessel also has a gas inlet and a gas outlet located between the pulp inlet and the treated pulp outlet with the gas outlet vertically below the gas inlet. Thus, a cocurrent flow of pulp and gas is provided in the vessel. A gas recirc- ulating system interconnects the gas inlet and the gas outlet and comprises an oxygen purification system connected to the gas outlet and an ozone generator connected to the oxygen purification system. The ozone/oxygen gas mixture from the ozone generator is fed under pressure to the vessel gas inlet.

403527

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