Reactor for bleaching high consistency pulp with ozone

Paper making and fiber liberation – Apparatus – Digester

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162243, 162246, 162 65, 422229, D21C 700, D21C 9153

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active

051819899

ABSTRACT:
An apparatus for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine. The bleaching reactor is a horizontal vessel having a central rotatable shaft which preferably contains paddles, cut and folded screw flights or a ribbon flight, to disperse and advance the pulp particles in a plug flow manner while contacting and mixing the pulp particles with a gaseous bleaching agent such as ozone for substantially uniform bleaching thereof.

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