Method for rapid ozone bleaching of wood pulp

Details Method for rapid ozone bleaching of wood pulp Method for rapid ozone bleaching of wood pulp

D - Textiles, Paper

21

C

D21C 9/153 (2006.01)

Patent

CA 2132165

ABSTRACT OF THE DISCLOSURE A method for rapid bleaching of high consistency wood pulp using ozone gas provides for generating ozone in a carrier gas at a concentration of five percent to fifteen percent by weight, introducing the ozone in its carrier gas together with the wood pulp into a bleaching reactor at a pressure of more than one atmosphere, retaining the pulp and ozone gas in the bleaching reactor for a required bleaching time, and discharging the bleached pulp to a receiving vessel for further processing.

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